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1
AKHTAR, NAVEED, SARA HAYEE, FAHEEM NAWAZ, AMIR NADEEM, ABDUL QAYYUM KHAN SULEHRIA, and FARAH ASHFAQ. "IMPACTS OF PHYSICOCHEMICAL PARAMETERS ON ZOOPLANKTON BIODIVERSITY RECORDED FROM SAFARI ZOO LAKE LAHORE, PUNJAB, PAKISTAN." Pakistan Journal of Emerging Science and Technologies (PJEST) 3, no. 2 (2023): 1–12. http://dx.doi.org/10.58619/pjest.v3i2.75.
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Zooplanktons are an integral part of any water reservoir, whether freshwater or marine. They are linked in food chains and the food web of a water ecosystem. Some zooplanktons are food for other zooplankton types. The diversity and density of these creatures are affected by eutrophication and changes in Physico-chemical parameters. Some species of zooplanktons are found in eutrophic water bodies. They are important bio-indicators, and their presence reflects the eutrophic condition of any water body. These organisms have a worldwide distribution, playing a pivotal role in shaping the whole community structure of any water reservoir and unfolding the close connections of various trophic levels. The present study explores the density and diversity of various types of zooplankton found in Safari Zoo Lake, Lahore. The study on an artificial lake with lesser water replacement pictured different zooplankton groups, including copepod, tintinnids, cladoceran and rotifers with many larger animals, which affected the overall zooplankton population. Since Physico-chemical parameters also affect the density and diversity of zooplankton, water samples were collected to measure various parameters every month. A very low density and diversity of zooplanktons were recorded during this study, where rotifers were the most abundant. The lake condition showed eutrophication getting support from bio-indicator species like Brachionus calyciflorus.
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Jadhav, Dr. Rahul Ramesh. "Zooplankton Diversity of Dongergaon Water Tank Dongergaon Dist Latur (M.S)." Journal of Research & Development 16, no. 8 (June 30, 2024): 17–18. https://doi.org/10.5281/zenodo.12704872.
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Abstract: The present paper deals with the zooplankton diversity of Dongergaon water tank Dongergaon. The qualitative and quantative analysis of zooplankton was carried out from Feb 2022 to Jan 2023. Different species of zooplankton were identified. The zooplanktons are the indicators of ecological status of any aquatic body. Zooplankton is one of the important stage in aquatic food chain where they are directly fed by small fishes
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Dr., M. R. Gurav. "Study of Zooplankton Occurrence during monsoon season from Kurnur dam, Akkalkot." International Journal of Advance and Applied Research 4, no. 8 (March 11, 2023): 12–14. https://doi.org/10.5281/zenodo.7800662.
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Present study on zooplankton occurrence is carried out at Kurnur dam during monsoon season 2021. The results showed occurrence of three groups of zooplanktons viz rotifers, copepods and cladocerans during investigation of four months (June to September). Changes in Physicochemical parameters exerting its impact on zooplankton distribution. Our results are discussed in light of seasonal fluctuations and their effect on occurrence of zooplankton community.
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Sangale, Deepali, Sana Sayyad, Sandip Chordiya, Vitthal Nale, and Kartik Kekan. "Biodiversity of Zooplanktons Found in Three Freshwater Bodies in Baramati City, Pune District, Maharashtra." International Journal of Research Studies on Environment, Earth, and Allied Sciences (IJRSEAS) 2, no. 2 (March 30, 2025): 120–26. https://doi.org/10.5281/zenodo.15332362.
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Abstract:The present study examined the diversity of zooplanktons found in three different freshwater bodies Nira Left Bank Canal (S1), Karha River (S2), and Krantisurya Mahatma Phule water storage tank (S3), which are present in Baramati city, Maharashtra (India). As cosmopolitan organisms, zooplankton serve as crucial ecological indicators in water quality assessment and facilitate sewage disposal. Our research revealed a diverse array of zooplankton, comprising five groups: Rotifera, Cladocera, Copepoda, Ostracoda, and Protozoa. The observed zooplanktons comprised 13 Rotifera, 03 Cladocera, 06 Copepods, 02 Ostracods, and 05 Protozoans. Among five groups of Zooplanktons, the Rotifera group was found to be the most dominant group. From three selected sampling sites, it was found that sampling site 3(S3), Krantisurya Mahatma Phule water storage tank, has a high zooplankton diversity., it can be concluded that the Rotifers were dominant zooplankton in the S3 sampling site, with Cladocera as compared to the other two sites, while sites S1 and S3 have equal diversity of Copepods. Ostracods were distributed uniformly in all three sites, S1, S2, and S3. In site S3, protozoan diversity is more than other two sites (S1&S2). It can also be observed that the Rotifer was the dominant zooplankton group from all five groups, viz Rotifera, Cladocera, Copepoda, Ostracoda, and protozoa (Rotifera> Copepoda> Protozoa> Cladocera> Ostracoda).
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Mishra, Yogesh. "Study of zooplankton community structure for aquaculture planning in Lony dam reservoir." GSC Biological and Pharmaceutical Sciences 11, no. 1 (April 30, 2020): 161–65. https://doi.org/10.5281/zenodo.4277076.
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Zooplanktons form an important intermediary step in the grazing food chain in aquatic ecosystem. The qualitative analysis of zooplankton has shown that the rotifers, protozoans, cladocerans and copepods were the major components of its total bulk in lony dam. The maximum magnitude of zooplanktons abundance was found in summer months and minimum was noted in early monsoon months. The study includes 28 species of zooplanktons which shows its moderate bio-diversity. The remarkable seasonal changes of total zooplanktons at present water body were registered. The littoral stations had high zoo planktonic density than limnetic sites. The quantitative variability of zooplankton has high-lighted their mesotrophic nature. The mean maximum and minimum values of zooplanktons were recorded.
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Wasudha, J. Meshram. "Eutrophication bioindicators of pollution in Chirebandi pond, Fulchur, Gondia, Maharashtra, India." Int. Res. Journal of Science & Engineering, 2023 A13 (December 31, 2023): 47–50. https://doi.org/10.5281/zenodo.10516181.
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To study the eutrophication bioindicators of pollution, the water samples of Chirebandi Pond were collected and analysis was done monthly from June 2006 to May 2007. This study was based on only the zooplanktonic population and their role as eutrophication indicators in Chirebandi pond. Total zooplanktons were recorded as 3837 ind/lit. The zooplankton which was recorded. They are Rotifera, Copepoda, Cladocera, and Ostracoda in the pond. The investigation shown that this water body is very much polluted which results to the eutrophic condition because of the anthropogenic activities by the people.
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Pathak, S. K., and Sandhya Kshetrey. "Seasonal trends in physico-chemical parameters and zooplankton in a freshwater reservoir of Dejla Dewada, Khargone, M.P." Environment Conservation Journal 15, no. 1&2 (June 18, 2014): 225–28. http://dx.doi.org/10.36953/ecj.2014.151232.
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Seasonal variation in physico-chemical and zooplankton communities of Dejla Dewada Reservoir (D.D.R.), West Nimar district (Khargone) was studied during October 2009 to September 2010. Protozoa, Rotifera, Copepoda, Cladocera and Ostrcoda were found dominated zooplanktonic groups. The total zooplankton density ranged between 879 unit/L to 2980 unit/L.The composition of zooplankton was found as Protozoa >Rotifera>Copepoda>Cladocera>Ostracoda.
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Mishra, Suman. "Diversity and abundance of zooplankton in chilika lagoon, Odisha." PROCEEDINGS OF THE ZOOLOGICAL SOCIETY OF INDIA 23, no. 02 (December 2024): 285. https://doi.org/10.59467/pzsi.2024.23.285.
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Zooplankton, the microscopic and free-swimming animal component of an aquatic ecosystem plays an important role on its energy flow process. From the fishery point of view, zooplankton forms the vital links in the pelagic food chain. Many micro zooplanktons also constitute the major food items of the larvae of crustaceans, molluscs and fishes. Thus, abundance of zooplankton practically acts as an ideal index to assess the fertility of given water mass. The present study deals with the quantitative and quantitative diversity of zooplankton in Chilika lagoon. Four zooplankton group viz.,Copepoda, Protozoa, Cladocera and Rotifera were recorded. Theabundance of zooplankton during the sampling period varied between 1775-4840 u/l. Pre-monsoon registered highest abundance (4675-4217 u/l) with average value (2223 u/l) followed by post-monsoon (u/l) with average value 2047 u/l and monsoon (1775-3522nos/m-3) with an average value 1324nos m-3. Copepods had emerged as the most dominant group (57%) throughout the study period. The shared group followed by protozoa (19%), cladocera (14%) and rotifera (10%).. KEYWORDS :Chilika, Zooplankton, Diversity, Abundance.
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Kumar, Purushottam, and Dr D. K. Keshri. "Studies on changes in blood glucose in Prometon (weedicide) induced fresh water fish, Mystus bleekeri (day)." PROCEEDINGS OF THE ZOOLOGICAL SOCIETY OF INDIA 23, no. 02 (December 2024): 281. https://doi.org/10.59467/pzsi.2024.23.281.
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Zooplankton, the microscopic and free-swimming animal component of an aquatic ecosystem plays an important role on its energy flow process. From the fishery point of view, zooplankton forms the vital links in the pelagic food chain. Many micro zooplanktons also constitute the major food items of the larvae of crustaceans, molluscs and fishes. Thus, abundance of zooplankton practically acts as an ideal index to assess the fertility of given water mass. The present study deals with the quantitative and quantitative diversity of zooplankton in Chilika lagoon. Four zooplankton group viz.,Copepoda, Protozoa, Cladocera and Rotifera were recorded. Theabundance of zooplankton during the sampling period varied between 1775-4840 u/l. Pre-monsoon registered highest abundance (4675-4217 u/l) with average value (2223 u/l) followed by post-monsoon (u/l) with average value 2047 u/l and monsoon (1775-3522nos/m-3) with an average value 1324nos m-3. Copepods had emerged as the most dominant group (57%) throughout the study period. The shared group followed by protozoa (19%), cladocera (14%) and rotifera (10%).. KEYWORDS :Chilika, Zooplankton, Diversity, Abundance.
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Vairagade S. P. "A Review on Zooplankton Diversity with Reference to Physico-Chemical Parameters of Lentic Ecosystems in Maharashtra." International Journal of Scientific Research in Science and Technology 11, no. 2 (April 2, 2024): 37–48. http://dx.doi.org/10.32628/ijsrst524111103.
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Zooplanktons are diverse organisms, are found more or less in all water bodies. The plankton research is a highly helpful technique for determining the biotic potential of water bodies and adds to the overall calculation of their biotic nature and general economic potential. Zooplanktons are microscopic, free-floating organisms that are essential to the functioning of aquatic ecosystems. As the most crucial link in the energy transfer between phytoplankton and higher aquatic animals, zooplanktons are significant biotic components and play a significant role in the aquatic environment. The functioning of an aquatic ecosystem's food chains, food webs, energy flow, and nutrient cycling are all influenced by zooplankton. Zooplankton populations are excellent indicators of the stability of the food chain. Numerous environmental parameters, including pH, temperature, salinity, oxygen, and others, have an impact on zooplankton. The food chain and the flow of energy between the primary and tertiary trophic levels are both significantly influenced by zooplankton. They serve as indicators of the physical, chemical, and biological processes occurring in aquatic systems due to their high densities. Because they are highly sensitive to environmental change, changes in the abundance of certain species or in the makeup of certain communities can be used to gauge the health of the environment. An assessment of the literature on zooplanktons in Indian lentic water has been done in the current work, which has long been deemed necessary in this subject.
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Khan, Saleha, Sunzida Sultana, Sadia Momota Hena, Md Sayem Ahmed, Most Sanjida Sultana, Most Suraiya Nisha Akhi, Yahia Mahmud, and Md Moazzem Hossain. "Seasonal dynamics of zooplankton in a eutrophic fish pond of Bangladesh in relation to environmental factors." Journal of Aquaculture & Marine Biology 12, no. 2 (2023): 129–36. http://dx.doi.org/10.15406/jamb.2023.12.00365.
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Zooplankton is crucial for transmitting energy from primary producers to higher trophic levels. A study was done in a Bangladesh eutrophic fish pond to know zooplankton's seasonal dynamics in relation to environmental factors. There were 11 different zooplankton genera, which belong to three major classes: Copepoda, Rotifera, and Cladocera. Peak abundance of zooplankton was found in the spring and winter, respectively. Cluster analysis clearly indicated zooplankton abundance during the spring and winter. Rotifera was the main dominant group in the total zooplankton population. Copepoda and Cladocera had a lower abundance than those of Rotifera. During the study period, environmental factors were observed monthly. The total zooplankton abundance showed a positive correlation only with pH and a negative correlation with transparency, dissolved oxygen, phosphates, nitrates, and temperature during Pearson’s correlation coefficient analysis. The canonical correspondence analysis also indicated that pH, transparency, and temperature significantly affect the abundance of zooplankton groups. Therefore, further research on the influence of environmental factors on different species of zooplankton is strongly suggested for achieving sustainable fish production from eutrophic fish ponds.
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Yaqoob, N., A. Mashiatullah, F. Chughtai, N. Sehr, T. Javed, and A. Ghaffar. "PHYTOPLANKTONS AND ZOOPLANKTONS DIVERSITY IN KARACHI COASTAL SEAWATER UNDER HIGH AND LOW TIDE DURING WINTER MONSOON." Nucleus 50, no. 2 (May 23, 2013): 141–48. https://doi.org/10.71330/thenucleus.2013.764.
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This paper represents the population density of phytoplanktons and zooplanktons recorded during the marine environmental studies at Karachi coast in the month of February 2011. Samples were collected by towing net, preserved and quantification and identification was carried out under light microscope. Twenty-three phytoplanktons species and nine zooplankton groups were recorded in the seawater from the sampling area of 10 square kilometers. Coscinodiscus and Copepods were dominant in the population of phytoplankton and zooplankton, respectively. Phytoplankton population density increased while zooplankton abundance decreased offshore from the coastline in the open sea.
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S. Dutta and B. Saha. "Review on Physico-chemical factors-based Zooplankton diversity of fresh water ecosystems in West Bengal, India." Ecology, Environment and Conservation 30, no. 04 (2024): 1732–47. https://doi.org/10.53550/eec.2024.v30i04.045.
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Zooplanktons are microscopic organisms that play a crucial role in the aquatic food web and greatly increase the productivity of freshwater environments. The fundamental food supply for fish and other aquatic animals in any aquatic habitat is plankton. They have transitioned to converting detritus matter into consumable animal food and are operating at the second trophic level in the energy cycle. In this work, we attempted to evaluate the evenness, diversity, and richness of zooplankton species and to forecast the fresh water aquatic ecosystem of entire West Bengal condition based on physico-chemical factors. Due to their acute sensitivity to environmental changes and quick response to water quality changes, zooplanktons are excellent indicators of changes in water quality. Between phytoplankton and fish, zooplanktons act as a mediator. Therefore, zooplankton research, both qualitative and quantitative, is very important. In this review, we offer quantitative data on the seasonal fluctuations of zooplankton and a few physico-chemical variables from different fresh water ecosystems located in several regions of West Bengal. Present review study focused on the physico-chemical parameters like water temperature, pH, dissolved oxygen and also eutrophication level of fresh water ecosystem of West Bengal. A total of 58 species of zooplanktons have been identified, including 16 species of Rotifer, 4 species of Copepod, 16 species of Cladocera, 16 species of Protozoa, and 6 species of Ostracoda. Zooplankton population showed positive significant co-relation with physico-chemical parameters like water temperature and dissolve oxygen level, whereas negatively correlated with pH and eutrophication level. Seasonal variations in zooplanktons were also observed. The physico-chemical parameters of fresh water ecosystem of West Bengal were suitable for the growth of aquatic biota and represent a resource for scientific management of aquaculture practices and composite fish culture by taking some precautions and also maintain the healthy biodiversity in aquatic ecosystems in West Bengal.
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Deepak, T. Tangade. "Zooplankton Diversity Of Ghanegao Dam Jambsamarth In Relation To Fishes." International Journal of Advance and Applied Research 4, no. 12 (March 31, 2023): 53–55. https://doi.org/10.5281/zenodo.7821308.
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The present paper deals with the zooplankton diversity in Ghanegao dam Jambsamarth. Tq. Ghansawangi dist jalna (M.S). Zooplanktons are the heterotrophic units and useful for the fishes as food. Population of plankton increases than automatically the income of the fisherman increases. Plankton are used for indicator of environmental and aquatic human health because of their high sensitivity of environmental changes and short life span. Zooplakton are the indicators of future fisheries. During the year Jan.2021 to Dec.2021, the 12genera of zooplankton are observed in water sampale. Zooplankton population in the Ghanegao Dam show higher range during winter season and the lower range during summer season .this group wise zooplankton observation during study period were copepod two genera ,cladocera five genera ,Rotifera four genera and one genera from ostrocoda
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Bulut, Hilal, and Serap Saler. "Murat Nehri’nin (Elazığ-Palu İlçe Merkezi Sınırları İçindeki Bölümün’de) Zooplanktonu ve Değişimi." Turkish Journal of Agriculture - Food Science and Technology 2, no. 1 (January 10, 2014): 13. http://dx.doi.org/10.24925/turjaf.v2i1.13-17.32.
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Zooplankton of Murat River was examined from monthly taken samples between June 2011 and May 2012. As a result of research were identified total 33 species, 25 of them belong to Rotifera, 6 belong to Cladocera, 2 belong to Copepoda. Zooplanktonik species were comprised as 75.76% Rotifera 18.18% Cladocera and 6.06% Copepoda species. There was marked decrease in at the zooplankton species diversity in winter months. There was sharp increase at the zooplankton species diversity in spring and in summer months. Especially in spring month’s zooplankton were recorded in highest species and numbers individual. The most species were determined in April (nine species). At least species were determined January (four species). pH, dissolved oxygen, water temperature were measured of the study area. The study has got an importance as to be the first research on zooplankton in this area.
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Espincho, Francisca, Rúben Pereira, Sabrina M. Rodrigues, Diogo M. Silva, C. Marisa R. Almeida, and Sandra Ramos. "Assessing Microplastic Contamination in Zooplanktonic Organisms from Two River Estuaries." Water 16, no. 7 (March 29, 2024): 992. http://dx.doi.org/10.3390/w16070992.
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The present work aims to evaluate the MP contamination of zooplankton and its impact on MP trophic transfers at the lower levels of the food web in a field study. During 1 year, seasonal surveys were conducted to collect zooplankton and water samples from different sites in two estuaries, the Douro and Lima estuaries (NW, Portugal). The zooplankton was quantified and identified into major zooplanktonic groups. Dedicated protocols that had been previously optimized were used to assess the MP presence in the water samples and in two of the most abundant zooplankton groups (copepods and chaetognaths). The results showed the presence of MPs in all water samples, with similar MP concentrations in both estuaries (Lima: 2.4 ± 2.0 MPs m−3; Douro: 2.3 ± 1.9 MPs m−3). In general, no temporal or spatial variations were observed. Fibres, blue and of a small size (<1 mm), were the most common characteristics of the MPs found in the water and zooplankton, indicating that water can be a source of MPs for zooplankton. Chaetognatha exhibited higher MP contamination in the Lima (2.9 ± 3.1 MPs ind−1) and Douro (2.0 ± 2.8 MPs ind−1) estuaries than Copepoda, which tended to have lower levels of MP contamination (Lima: 0.95 ± 1.12 MPs ind−1; Douro: 1.1 ± 1.2 MPs ind−1). Such differences in the MP concentrations between these two categories of zooplanktonic organisms indicate a possible MP trophic transfer at the lower levels of the food web. The results highlight the novel possibility of an MP trophic transfer in zooplankton and the need to fully assess the impacts of MPs in real scenarios.
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Silveyra-Bustamante, Angel Antonio, Jaime Gómez-Gutiérrez, Eduardo González-Rodríguez, Carlos Sánchez, Agustín Schiariti, and María A. Mendoza-Becerril. "Seasonal variability of gelatinous zooplankton during an anomalously warm year at Cabo Pulmo National Park, Mexico." Latin American Journal of Aquatic Research 48, no. 5 (November 1, 2020): 779–93. http://dx.doi.org/10.3856/vol48-issue5-fulltext-2441.
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The seasonal variability of gelatinous zooplankton (siphonophores, medusae, and thaliaceans) abundance was investigated at Cabo Pulmo National Park (CPNP) from weekly zooplankton samples collected throughout 2014. The Gulf of California had prolonged warming during 2009-2019, with 2014 as the anomalously warm year preceding El Niño 2015-2016 compared to the 2003-2020 SST time series. Gelatinous zooplankton accounted <1% of the entire zooplankton community abundance at CPNP during 2014, suggesting a low influence of predation pressure upon their zooplanktonic and micronekton preys. Siphonophores (57%), thaliaceans (42%), and medusae (1%) were present throughout the year. The abundance of gelatinous zooplankton had a significant negative association with sea surface temperature and a positive association with sea surface chlorophyll-a concentration and velocity and direction of the wind, increasing their abundance during October after the hurricane season. The gelatinous zooplankton species assemblage at the coastal CPNP was similar but less abundant than the gelatinous zooplankton species assemblage observed in the oceanic region of the southern Gulf of California during summer 2014. Tropical species Diphyes dispar, Abylopsis tetragona, Chelophyes contorta, and Thalia spp. numerically dominated the gelatinous zooplankton community associated with a regional heatwave period recorded during 2014. A high proportion of tropical zooplankton indicates that mesotrophic conditions sustain the current high biomass and diversity of nektonic and benthonic planktophagous fauna inhabiting CPNP. However, prolonged warming events might decrease zooplankton biomass in the southern region of the Gulf of California in the future.
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Avijit, Mukherjee. "Seasonal variations of zooplankton diversity in fresh water reservoir of West Bengal, India." Indian Journal of Science and Technology 13, no. 20 (June 18, 2020): 1991–97. https://doi.org/10.17485/IJST/v13i20.556.
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Abstract Background/Objective: Present study was carried out to identify zooplankton density at Baburpukur pond along with physicochemical properties. In India. Planktonic richness reflects the biodiversity stock. The present study assumes greater importance for biodiversity conservation/ pollution indicator and aquaculture of fish and prawns. Methods/Statistical analysis: Statistical analysis in this experiment was performed by Student's t-test. In this test, 0.05 probability, degree of freedom, critical t-value, and calculated t-values were recorded. Here zooplankton number along with physico-chemical parameters was recorded. From these t-values, significant seasonal variations were found in the respective water body. The zooplankton density and physiochemical parameters were recorded during the period of Jun 2018 to February 2020. Diversity of zooplankton has been counted using Sedgwick-Rafter counting chamber. Findings: Four different species of zooplankton were studied such as Daphnia, Cyclops, Cypris and Brachionus. Zooplankton community structure generally changes with temperature, pH of water, free CO2 level, dissolved O2. This study also reveals that zooplanktons have their own peak periods of density which is influenced by the above environmental conditions. Application: At present, this water reservoir is suitable for fish culturing. So several management practices are necessary to conserve this zooplankton density for proper healthy situation of water body. This study is also helpful in understanding the zooplankton diversity of Baburpukur Pond with proper maintaining of aquaculture. Keywords: Zooplankton; biodiversity conservation; pollution indicator; aquaculture
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C., Kishor, O. R. Nataraju, Venkatappa ., and A. T. Ramachandra Naik. "Zooplankton Abundance and Growth of Carps in Farm-Ponds of Different Agro-Climatic Zones of Karnataka." Environment and Ecology 41, no. 3D (September 2023): 2129–34. http://dx.doi.org/10.60151/envec/lejp5402.
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Availability of planktons / natural fish food plays an important role in getting better growth of fish from farm ponds. Study was carried out to evaluate the zooplankton community and growth performance of Carp fishes in farm ponds of coastal and malnad agro-climatic regions of Karnataka. All the ponds were manured with cowdung and poultry manure @ 2000 kg/ha. for the production of planktons. Catla, Rohu and common carp fingerlings were stocked in all the ponds @ 10,000 nos. /ha in 1:1:1 ratio and fishes were fed with groundnut oil cake and rice bran (in 1:1 ratio) @ 5% of the body weight every day. The water samples from all the ponds were collected and filtered for zooplanktons using nylon bolting cloth (60 µm). The growth of fishes in terms of weight was recorded. The analyzed zooplankton planktons were classified into 5 class’s viz., Rotifera, Protozoa, Copepoda, Cladocera and Ostracod. Among zooplanktons observed, copepod contributed maximum to zooplankton community followed by rotifers, cladocerans and ostracod. In coastal ponds the average maximum number of zooplankton 10,368 Cells/m3 and minimum number of 176 Cells/m3 were observed. In Malnad ponds the average maximum number of zooplankton 21,797 Cells/m3 and minimum number of 1579 Cells/m3 were observed. The average maximum growth of Catla, Rohu and Common carp was observed in coastal ponds were 884.42, 640.1 and 692.27 gms respectively and in Malnad farm ponds 1080.71, 954.19 and 1023.18 gms respectively. Use of cowdung and poultry manure in combination was found useful for getting better growth in farm ponds of both the regions.
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Keast, Allen. "Planktivory in a Littoral-Dwelling Lake Fish Association: Prey Selection and Seasonality." Canadian Journal of Fisheries and Aquatic Sciences 42, no. 6 (June 1, 1985): 1114–26. http://dx.doi.org/10.1139/f85-138.
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A littoral zone assemblage of six planktivorous fishes (Pimephales notatus, Notropis heterodon, Fundulus diaphanus, Lepomis macrochirus, Ambloplites rupestris, Perca flavescens), and five zooplankter species, was analysed relative to three hypotheses concerning prey consumption: (1) Size-dependent predation will operate, as elsewhere. (2) Small-bodied planktivores, unable to handle larger prey, will take the most abundant zooplankter and not show species specialization. (3) The strongly cyclical nature of zooplankton populations will not permit fish species to specialize exclusively on zooplankton; there will be a negative correlation between zooplankton numbers and use of alternative prey, and at this time the planktivores will minimize competition by choosing different alternative prey. The first hypothesis was supported, the second and third partially so. The small specialist planktivores, P. notatus and N. heterodon, did not take the commonest small zooplankter, Bosmina longirostris: rather, they specialized largely on Chydorus sphaericus, feeding on it even when rare. Lepomis macrochirus, a generalise took largely B. longirostris, No species was exclusively planktivorous. The species only partly differed in alternative prey types eaten. Chironomid larvae were a regular item of diet of most species.
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Andradi-Brown, Dominic A., Catherine E. I. Head, Dan A. Exton, Christina L. Hunt, Alicia Hendrix, Erika Gress, and Alex D. Rogers. "Identifying zooplankton community changes between shallow and upper-mesophotic reefs on the Mesoamerican Barrier Reef, Caribbean." PeerJ 5 (January 5, 2017): e2853. http://dx.doi.org/10.7717/peerj.2853.
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Mesophotic coral ecosystems (MCEs, reefs 30–150 m) are understudied, yet the limited research conducted has been biased towards large sessile taxa, such as scleractinian corals and sponges, or mobile taxa such as fishes. Here we investigate zooplankton communities on shallow reefs and MCEs around Utila on the southern Mesoamerican Barrier Reef using planktonic light traps. Zooplankton samples were sorted into broad taxonomic groups. Our results indicate similar taxonomic zooplankton richness and overall biomass between shallow reefs and MCEs. However, the abundance of larger bodied (>2 mm) zooplanktonic groups, including decapod crab zoea, mysid shrimps and peracarid crustaceans, was higher on MCEs than shallow reefs. Our findings highlight the importance of considering zooplankton when identifying broader reef community shifts across the shallow reef to MCE depth gradient.
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Soni, Hiren B., and Sheju Thomas. "Occurrence of zooplanktons at Sacred Palustrine Habitat, Central Gujarat, India, with conservation and management strategies." International Journal of Environment 3, no. 1 (February 28, 2014): 111–21. http://dx.doi.org/10.3126/ije.v3i1.9948.
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The aim of the present study was to represent the zooplankton composition of Sacred Palustrine Habitat (SPH), Anand District, Central Gujarat, India. Collections of zooplanktons were carried out at three permanent sampling stations at fortnight intervals over one year period covering three consecutive seasons from June 2012 to May 2013. The zooplankton population was represented by a total of 29 genera and 31 species bestowed by 12 species of Ciliophora, followed by Rhizopoda (6), Zooflagellata (5), Rotifera (4), Cladocera (2), Copepoda and Ostracoda (1) each. Of the total 31 species of zooplanktons, nine species were abundant, 11 were common, and 12 were rare. The present paper discusses the population profile of zooplanktons in waters of SPH with suggested conservation and management strategies. DOI: http://dx.doi.org/10.3126/ije.v3i1.9948 International Journal of Environment Vol.3(1) 2014: 111-121
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Sadia, Nurany, Md Kawser Ahmed, Md Moniruzzaman Khondkar, Seema Rani, Md Jobaer Alam, Ahmad Al Karim, and Makidul Islam Khan. "Horizontal and Vertical Distribution and Abundance of Zooplankton around the Swatch-of-No-Ground of Northern Bay of Bengal." Dhaka University Journal of Earth and Environmental Sciences 10, no. 2 (January 19, 2022): 1–8. http://dx.doi.org/10.3329/dujees.v10i2.57510.
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This study assessed horizontal and vertical distribution and abundance of zooplankton community in water samples collected from 26 stations at a depth of 0 to 250 m of the northern Bay of Bengal. A total of 55 zooplankton species were identified where Copepod was 72.41% and Ciliophora was 8.62%. Among the Copepod, 48%, 40% and 12% of species were Calanoid, Cyclopoid and Harpacticoid Copepod, respectively. This study also found 2 species of Decapod, 2 species of Rotifer, 2 species of Cladocera, 1 species of Chaetognatha and 1 species of Stomatopoda. Spatial distribution of zooplankton species was varied from station to station and cruise to cruise. Maximum 23,868 individuals of zooplanktons were recorded in cruise 2, whereas the lowest number (758 individuals) was found in cruise 4. Zooplankton abundance was ranged between 18 to 22,500 cells/L in all cruises, whereas the highest abundance was found in cruise 2 and the lowest was recorded in cruise 4. The highest abundance (37,310 individuals) was documented at surface water and the lowermost number of zooplankton (10 individuals) was recorded at 100 m depth. This study showed negative correlation between zooplankton abundance and water depth. The results of the current study might help to understand zooplankton abundance and distribution in the northern Bay of Bengal and will use as a baseline study for further research. The Dhaka University Journal of Earth and Environmental Sciences, Vol. 10(2), 2021, P 1-8
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Sen Gupta, Subhasree. "Biomonitoring the status of aquatic bodies using zooplankton as surrogate species amidst urban landscape." Holistic approach to environment 12, no. 4 (September 19, 2022): 144–54. http://dx.doi.org/10.33765/thate.12.4.2.
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The concept of surrogates in biodiversity assessments has been widely accepted in the recent years. Surrogates are taxonomic groups that indicate the overall biodiversity at a particular site. Zooplankton is an important component of the aquatic ecosystem, playing a major role in energy transfer between the phytoplankton or producers and the consumers at higher trophic levels. In this study zooplanktons were considered as surrogates for biomonitoring status of two aquatic bodies amidst urban landscape at the southern fringes of Kolkata, West Bengal, India through different seasons. Zooplankton diversity and abundance was found to vary with seasons in both the ponds in correlation with limnological parameters. Pond 1 was found to be larger in size, having partial macrophyte cover in comparison with Pond 2 which is smaller and devoid of any macrophyte cover over the study period. The Pond 1 elucidated higher diversity of zooplankton having higher water pH and phosphate concentration and less nitrite concentration. Pond 2 elaborated less zooplankton diversity with lower pH, less phosphate and higher nitrite concentration. Diversity and abundance of zooplankton surrogates provided valuable information about the status of water bodies amidst urban landscape and can be utilised as a tool for biomonitoring.
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Anyanwu, E. D., O. G. Adetunji, and S. N. Umeham. "Water quality and zooplankton community of the Eme River, Umuahia, Southeast Nigeria." Limnology and Freshwater Biology, no. 5 (2021): 1186–94. http://dx.doi.org/10.31951/2658-3518-2021-a-5-1186.
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Abstract. Aquatic ecosystems and biota are often adversely affected by anthropogenic activities. Consequently, zooplanktons have been used to monitor anthropogenic impacts because of their sensitivity to their environment. Water quality and zooplankton community of the Eme River, Umuahia, was assessed between December 2017 and November 2018. The study was carried out in six stations in relation to human activities. Human activities in the watershed were dominated by sand mining. A quantitative filtration method was used for the zooplankton sample collection while standard sample collection and analytical methods were used for the water samples. The zooplankton species recorded were 27 while the most abundant zooplankton group was Rotifera. A known pollution indicator, Daphnia pulex, had the highest number of individuals. The effects of human activities in the watershed were reflected in the results of some of the physicochemical parameters of the river. The zooplankton assemblage and community structure also reflected the effects of human activities in the river. Combined effects of human activities and season contributed to the relatively low zooplankton abundance recorded particularly in some downstream stations. The impacts of sand mining on water quality and zooplankton were more remarkable in the downstream stations (4 6) where the activity was intense while a large number of children swimming and related activities during the dry season had some impacts in station 1. The dominance of indicator and tolerant species indicated that the river was undergoing eutrophication. Sand mining among other observed anthropogenic activities was a major contributor to the nutrient enrichment in the river. The major water quality parameters influencing the zooplankton community structure was revealed by canonical correspondence analysis.
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Kitamura, M., Y. Kumamoto, H. Kawakami, E. C. Cruz, and K. Fujikura. "Horizontal distribution of Fukushima-derived radiocesium in zooplankton in the northwestern Pacific Ocean." Biogeosciences Discussions 10, no. 4 (April 2, 2013): 6143–70. http://dx.doi.org/10.5194/bgd-10-6143-2013.
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Abstract. The magnitude of the 9.0 Tohoku earthquake and the ensuing tsunami on 11 March 2011, inflicted heavy damage on the Fukushima Dai-ichi nuclear power plant (FNPP1). Fission products were emitted, falling over a broad range in the northern hemisphere, and water contaminated with radionuclides leaked into the ocean. In this study, we described the horizontal distribution of the Fukushima-derived radiocesium in zooplankton and in seawater in the western North Pacific Ocean (500–2100 km from the FNPP1) 10 months after the accident. 134Cs and 137Cs were detected in zooplankton and seawater from all the stations. Because of its short half-lives, 134Cs detected in our samples could only be derived from the FNPP1 accident. The highest 137Cs activity in zooplankton was same order of magnitude as that one month after the accident, and average activity was one or two orders of magnitude higher than 137Cs activities observed before the accident around Japan. Horizontally, the radiocesium activity concentrations in zooplankton were high at around 25° N while those in surface seawater were high at around the transition area between the Kuroshio and the Oyashio Currents (36–40° N). We observed subsurface radiocesium maxima in density range of the North Pacific Subtropical Mode Water and occurrence of many diel vertical migratory zooplanktons. These suggested that the high activity concentrations in the subtropical zooplankton at around 25° N were connected to the subsurface radiocesium and active vertical migration of zooplankton. However, the high activity concentrations of radiocesium in subsurface seawater did not necessarily follow the higher radiocesium activity in zooplankton. Biological characteristics of zooplankton community possibly influenced how large was contamination of radiocesium in the community but it is still unknown what kind of biological factors were important.
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Nguyen, Quoc Viet, and Triet Tran. "EXOTIC ZOOPLANKTONS IN SHIP BALLAST WATER ARRIVED AT SAIGON PORTS 2008-2009." Science and Technology Development Journal 14, no. 4 (December 30, 2011): 50–60. http://dx.doi.org/10.32508/stdj.v14i4.2036.
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Zooplanktons in ship ballast water is an important factor in marine bioinvasion. From September 2008 to January 2009, two hundreds ballast water samples were collected from oversea ships arrived at Sai Gon port. Results of taxonomical analysis identified 43 zooplankton taxa, 5 groups of shrimp larvae, crabs, polychaeta and 1 unidentified species. Among the zooplankton species identified, there were 9 species that were not seen in Viet Nam from previous studies. They are Pseudodiaptomus clevei, Bestiolina sp., Pseudodiaptomus sp., Harpacticus sp., Amphiascus sp., Jalysus sp., Hemicyclops sp., Kelleria sp., Stephos sp. and one unidentified species.
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Sontakke, Gajanan, and Satish Mokashe. "Diversity of zooplankton in Dekhu reservoir from Aurangabad, Maharashtra." Journal of Applied and Natural Science 6, no. 1 (June 1, 2014): 131–33. http://dx.doi.org/10.31018/jans.v6i1.388.
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Zooplanktons by their heterotrophic activity play a key role in the cycling of organic materials in aquatic ecosystems and are used as bioindicators of environmental quality. The present study was carried out from February 2009 to January 2010 which deals with diversity and abundance of zooplankton in Dekhu reservoir from Aurangabad district. A total 25 species of zooplankton were recorded in which rotifers were more abundant with 11 species followed by copepods and cladocerans 6 species each and 2 species of Ostracods. Results indicated that Dekhu reservoir is more productive.
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Vân, Lê Thị Hồng, and Trần Ngọc Diễm My. "The Zooplankton composition and surface water quality in some watershed around the aquaculture areas at the Ben Tre province." Science and Technology Development Journal - Natural Sciences 4, no. 1 (April 4, 2020): First. http://dx.doi.org/10.32508/stdjns.v4i1.768.
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The research was conducted in 3 districts: Binh Dai, Ba Tri and Thanh Phu in Ben Tre province in September 2017 (wet season) and April 2018 (dry season). The study recorded 63 taxa of zooplankton belong to 40 genera, 7 classes, and six groups: Protozoans, Rotifers, Cladocerans, Copepods, Ostracods and larvae (of shrimp and crab). Rotifers dominated the local zooplankton quantitatively, with 55,56% of the total organisms. Total zooplankton densities oscillated from 120 – 23 304 ind.m-3 during the wet and dry season. The total zooplankton in the wet season is higher in the dry season. The result of the research showed that zooplanktons were affected by season and salinity. The water quality indices (pH, temperature, salinity, TDS, DO, NO3-, NH4+, PO43-) were under limitation to use for aquaculture activities, aquatic organism conservation, and daily living. The Shannon – Wiener index (H’) fluctuated from 0,51 to 2,02, the Simpson index fluctuated from 0,15 to 0,8, the Pielou index fluctuated from 0,23 to 0,94. The bioindex showed that the water bodies are polluted (from α, β – mesosaprobic level to polysaprobic level). Our results indicated that there was a difference between water environmental parameters and zooplankton communities among seasons and stations. Therefore, it is necessary to combine these two indicators for better accurate results in water quality assessment.
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Hirai, Junya. "Optimal input DNA thresholds for genome skimming in marine crustacean zooplankton." PeerJ 13 (February 26, 2025): e19054. https://doi.org/10.7717/peerj.19054.
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Crustacean zooplanktons are key secondary and tertiary producers in marine ecosystems, yet their genomic resources remain poorly understood. To advance biodiversity research on crustacean zooplankton, this study evaluated the effectiveness of genome skimming, a method that assembles genetic regions, including mitogenome, from shotgun genome sequencing data. Because the small amount of DNA available is a limitation in zooplankton genetics, different input DNA amounts (1 pg–10 ng) were prepared for library construction for genome skimming using two large species: Euphausia pacifica (Euphausiacea) and Calanus glacialis (Copepoda). Additionally, de novo assembly was used to obtain long contigs from short reads because reference-guided assembly can not be applied to all crustacean zooplankton. Evaluation of the raw sequence reads showed increased proportions of high-quality and distinct reads (low duplication levels) for large DNA inputs. By contrast, low sequence quality and high sequence duplication were observed for ≤ 10 pg DNA samples, owing to increased DNA amplification cycles. Complete mitogenomes, including all 37 genes, were successfully retrieved for ≥ 10 pg (E. pacifica) and ≥ 100 pg (C. glacialis) of DNA. Despite the large estimated genome sizes of these zooplankton species, only ≥ 1 and ≥ 3 M reads were sufficient for mitogenome assembly for E. pacifica and C. glacialis, respectively. Nuclear ribosomal repeats and histone 3 were identified in the assembled contigs. As obtaining sufficient DNA amounts (≥ 100 pg) is feasible even from small crustacean zooplankton, genome skimming is a powerful approach for robust phylogenetics and population genetics in marine zooplankton.
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Pham, Hong Thi, Khuong Van Dinh, Duc Tien Do, Ha Thi Thu Le, Thu Thi Ninh, and Hoang Thi Thu-Huong. "MACRO-ZOOPLANKTON ABUNDANCE IN RELATION TO METAL ACCUMULATION AND WATER QUALITY IN TRUC BACH LAKE." Vietnam Journal of Science and Technology 58, no. 3A (May 25, 2020): 105. http://dx.doi.org/10.15625/2525-2518/58/3a/14280.
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Urban lake pollution is one of the serious issues due to suffering of waste discharged from householders. However, there is a gap of knowledge about the diversity of zooplankton species and how metals accumulate in zooplankton in urban ecosystems. We addressed this by determining the rule of blooming macro-zooplankton in Truc Bach lake and levels of two essential metals: copper (Cu), and zinc (Zn) and of three non-essential metals: arsenic (As), and lead (Pb) in water samples were determined. The results showed that Cladocerans and copepods are macro-zooplankton dominant species in Truc Bach Lake. Water temperature significantly affects the variety of copepod blooming. Arsenic concentration in water collected from the lake exceeded the safety level of current Vietnamese regulation. As concentration in macro-zooplankton positively correlated with metal concentrations in the water (p < 0.05) while the concentration of Cu, Zn, and Pb in water has no significant correlation with the metal in zooplankton’s body. The relative abundance of adult copepods in Truc Bach lake had a negative correlation with As concentration in water (p = 0.01). The higher As concentration in water, the lower relative abundance of copepods was found in the sample.
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Chaigneau, Alexis, François Talomonwo Ouinsou, Hervé Hotèkpo Akodogbo, Gauthier Dobigny, Thalasse Tchémangnihodé Avocegan, Fridolin Ubald Dossou-Sognon, Victor Olaègbè Okpeitcha, Metogbe Belfrid Djihouessi, and Frédéric Azémar. "Physicochemical Drivers of Zooplankton Seasonal Variability in a West African Lagoon (Nokoué Lagoon, Benin)." Journal of Marine Science and Engineering 11, no. 3 (March 6, 2023): 556. http://dx.doi.org/10.3390/jmse11030556.
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This study aimed to investigate the seasonal variation of zooplankton diversity and abundance in the Nokoué Lagoon in southern Benin. Through extensive sampling, a total of 109 zooplanktonic taxa were identified and quantified. The average zooplankton abundance was found to be 60 individuals per liter, with copepods and rotifers being the most dominant groups, comprising 68.1% and 29.1% of the total abundance, respectively. The key factor identified as driving the structure of the zooplanktonic assemblages was salinity, which showed significant seasonal variation. The results revealed that during the high water period, when the lagoon was filled with fresh water, rotifers were dominant, zooplanktonic diversity was highest, and abundances were quite high. Conversely, during the low water period, when the lagoon was characterized by brackish water, diversity was minimal, and abundance decreased slightly. The study also found that some areas of the lagoon showed high abundances independent of salinity levels, suggesting that other factors such as riverine inputs or the presence of acadjas (home-made brush parks used as fish traps) may also have notable effects on the zooplankton community. Overall, the findings of this study provide valuable insights into the functioning of one of the most biologically productive lagoons in West Africa.
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Lalhmingliani, Esther, and Freddy Lalrinpuia. "A preliminary assessment on the plankton diversity of Serlui ‘B’ dam in Mizoram, northeast India." Science Vision 17, no. 4 (December 31, 2017): 238–48. http://dx.doi.org/10.33493/scivis.17.04.08.
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Planktonic sampling was carried out at Serlui ‘B’ dam, Mizoram, northeast India from July 2016 to April 2017. The present study reported the occurrence of 6 groups of phytoplankton belonging to 27 genera and 16 orders and 4 groups of zooplanktons belonging to 12 genera 7 orders. The phytoplankton group consisted of Cyanophyceae, Bacillariophyceae, Ulvophyceae, Zygnematophyceae, Chlorophyceae and Xanthophyceae. Cyanophyceae were the predominant component of phytoplankton in Serlui ‘B’ dam during all seasons in terms of numerical abundance and account for 64% of the total phytoplankton. The zooplankton groups consisted of Maxillopoda, Tubulinea, Eurotatoria and Branchiopoda. Of these, the class Maxillopoda was the predominant component of zooplankton in Serlui ‘B’ dam during all season in terms of numerical abundance and account for 73% of the total zooplankton encountered from the study site. This study provides preliminary report of planktons of Serlui ‘B’ dam.
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Tejali, S. Ayare. "COMPARATIVE ACCOUNT OF PLANKTONIC DIVERSITY OF GAURIPADA LAKE, KALYAN, MAHARASHTRA, INDIA." International Journal of Zoology and Applied Biosciences 5, no. 3 (June 20, 2020): 163–69. https://doi.org/10.5281/zenodo.3902169.
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In freshwater system, zooplanktonic organisms form an important group as most of them feed upon and incorporate the primary producers into their bodies and make them available to higher organisms in food chain. Thus the zooplankton occupies a central position between the autotrophs and heterotrophs and forms an important link in food-webs. In the present study the qualitative analysis of zooplankton community was carried out for the period of two years. About 13 genera were recorded which includes rotifers, cladocerans and copepods. The qualitative study of zooplankton showed seasonal trend of occurrence in the lake, where rotifers were observed during all the seasons, cladocerans were is maximum during monsoon season and copepods were pre-dominantly observed during monsoon season.
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Ekpo, Paul B., Reuben C. Agu, Chinyere Osondu-Anyanwu, Augusta A. Nwachukwu, Nkoyo A. Nkang, and Inyang P. Ekpo. "An Assessment of the Effect of Pollution on Zooplanktons in Calabar Great Kwa River, Nigeria." Journal of Advances in Biology & Biotechnology 26, no. 3 (May 10, 2023): 11–16. http://dx.doi.org/10.9734/jabb/2023/v26i3623.
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Aim: Zooplanktons in the Calabar Great Kwa River were studied to assess the effect of pollution from human activities around the river on their respective abundance.
Place and Duration of Study: Samples were collected at the Esuk Atu and Esuk Atimbo stations of the Calabar Great Kwa River. Identification of Zooplanktons was carried out at the Laboratory of the Department of Genetics and Biotechnology, University of Calabar, Calabar, Nigeria.
Methodology: Collected samples were preserved, transferred to the laboratory, identified using a dissecting microscope and classified according to their different taxonomical groups.
Results: The Results showed that zooplankton abundance and distribution recorded in the stations were low due to pollution and interference from high human activities around the river such as domestic solid wastes, sewage waste waters, industrial effluents, pesticides, sand mining activities, hydrocarbons and other toxic substances. In Esuk Atu, the total abundance of zooplanktons in the periods of sampling were 12, 6, 3 and 11, while the numbers of taxa represented in the periods of sampling were 4, 3, 1 and 4. In Esuk Atimbo, the total abundance of zooplanktons in the periods of sampling were 7, 5, 9 and 10 while the numbers of taxa represented in the periods of sampling were 3, 3, 3 and 2. The zooplankton taxa identified in station 1(Esuk Atu) are Cladoceran (38%), Ostracoda (22%), Copepoda (19%), Rotifera (12%), Lepidoptera (6%) and Protozoa (3%). The zooplankton taxa identified in station 2 (Esuk Atimbo) are Copepoda (26%), Cladoceran (23%), Nemata (23%), Lepidoptera (16%), Rotifera (6%), Polycheata (3%) and Paguridae (3%).
Conclusion: These findings necessitate the need for the regulation and control of pollution from human activities around the Calabar Great Kwa River so as to ensure that the river is free from harmful contaminants thereby preserving the zooplanktons and other relevant organisms.
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Dauda, D. M., M. C. Emere, Y. Umar, and A. M. Umar. "Effects of Refining and Petrochemical Effluents on Water Quality and Zooplankton Community in River Rido Kaduna, Nigeria." Bulletin of Environmental Science and Sustainable Management (e-ISSN 2716-5353) 6, no. 1 (July 31, 2022): 19–24. http://dx.doi.org/10.54987/bessm.v6i1.705.
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Kaduna Refining and Petrochemical Corporations (KRPC) discharges were studied for a year along the river Rido to determine their impact on water quality and the distribution and abundance of Zooplankton. Physical and chemical parameters were measured following American Public Health Association (APHA) standards for evaluating wastewater. An atomic absorption spectrometer (AAS) was utilized for heavy metal analysis. For this experiment, we used a Plankton net with a 25 m mesh size and a specimen bottle with a 10 cm diameter ring opening to collect zooplankton. Zooplanktons were identified using a standard key and a monograph. Water quality parameters fluctuated, but all were within acceptable ranges except for temperature, conductivity, Total Dissolved Solid, and lead. Zooplanktons were represented in order of abundance by 8 species of protozoa constituting 72.44%, followed by 12 species of Rotifera (10.58%), followed by 13 species of Cladocera 9.55% and then 6 species of Copepoda (7.44%). The planktons showed seasonal variation with high density recorded during the wet season in all the stations. There was a low density of zooplankton in station B, while high density was observed in stations A and D. Also, the low transparency and dissolved oxygen (DO) as well as high mean values of temperature (30.88 oC), chloride (31.88 mg/L), lead (0.099 mg/L), TDS (224.17 mg/L) and conductivity (334.28 µS/cm) observed were above FEPA limits at station B were an indication of pollution and deterioration of water quality. This research revealed that the effluent discharge from KRPC has adverse effects on the zooplankton community and the water quality of river Rido.
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Chernyshev, Alexander N. "Comparative characteristics of zooplankton in Sisyarvi and hovoye lakes in 2020–2021 (Valaam Archipelago, Ladoga Lake)Lesc." Transactions of the Kоla Science Centre. Series: Natural Sciences and Humanities 3, no. 1/2024 (May 29, 2024): 27–33. http://dx.doi.org/10.37614/2949-1185.2024.3.1.004.
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Taxonomic composition, some structural and functional zooplankton characteristics of Lake Sisyarvi and Lake Leschovoye were analysed for the period of 2020–2021. In spite of close location of the lakes and their connection through the channels system differences in dominant species were discovered. In contrast to Lake Sisyarvi great variability in the zooplankton abundance and biomass in Lake Leschovoye was recorded as well as low values of the zooplankter individual mass. Comparative evaluation of the lakes trophic status was given.
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Harsha, D. Neelgund, and G. Kadadevaru Girish. "A Study on Seasonal Variation in Zooplankton Abundance in Kadasgatti Minor Irrigation Tank of Bailhongal Taluk, Belagavi District, Karnataka State, INDIA." Indian Journal of Science and Technology 14, no. 27 (July 31, 2021): 2238–49. https://doi.org/10.17485/IJST/v14i27.323.
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Abstract Objectives: A study on seasonal variation in zooplankton community was undertaken to evaluate the present status of water quality at Kadasgatti minor irrigation tank (MIT) located in the northern transitional zone of Belagavi district. Methods and Statistical Analysis: Water samples were collected from January 2017 to December 2017. Physico-chemical parameters and qualitative and quantitative analysis of zooplankton were carried out. Pearson correlation was calculated using SPSS, IBM Version 21 software to find out interrelationships between water quality and zooplankton groups. Findings: A total of 52 species of zooplanktons were recorded during the study period with a total zooplankton abundance of 14327 individuals with a relative abundance of 35.42%. Rotifera was the dominant group with 27 species, followed by Cladocera, Copepoda and Ostracoda. The highest zooplankton abundance was observed in summer while minimum in post-monsoon season. Copepoda was highest abundant group during the entire study period with its maximum abundance during winter and gradually declined and reached to its minimum in post-monsoon. The presence of eutrophic indicator species like Brachionus calyciflorus, Brachionus angularis, Filina longiseta suggests eutrophication of the tank. Novelty: The study provides baseline data on the present status of the water body indicating that, anthropogenic activities, agricultural runoff are the main cause of eutrophication. Sustainable and holistic conservational strategies have to be adopted to protect the water body. Keywords: Cladocera; Copepoda; Eutrophication; Rotifera; Seasonal variation; Zooplankton abundance
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Freyre, LR, DC Colautti, ME Maroñas, ED Sendra, and M. Remes-Lenicov. "Seasonal changes in the somatic indices of the freshwater silverside, Odontesthes bonariensis (Teleostei, Atheriniformes) from a Neotropical shallow lake (Argentina)." Brazilian Journal of Biology 69, no. 2 (May 2009): 389–95. http://dx.doi.org/10.1590/s1519-69842009000200023.
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The study object was an Odontesthes bonariensis (Valenciennes, 1835) population of a characteristically shallow lake from the pampasic region. Over one year, zooplankton and fish samples were collected monthly. As a function of time and gender, several indices were investigated (relative weight, mesentery fat index, gonadosomatic index, hepatosomatic index and somatic index) and were related to zooplanktonic community dynamics, the main energy food source for this species. The results indicate that the seasonal information contained in the weight compartments is most important in mesentery fat, gonads and liver. The zooplankton availability modulates reserves (fat) behaviour and physiologic activity (liver), determining spawn intensity. Thus, in spring spawns, with higher zooplankton availability, mature individuals of the population, males and females, transfer energy from the food to the gonads. In autumn spawns, they use the fat reserves for gonad ripening.
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Muñoz-Pedreros, Andrés, Patricio De los Ríos, and Marilyn González-Urrutia. "Zooplankton of a mountain river and highland bogs in a wetlands complex in Atacama, an Altiplano desert, in northern Chile." Crustaceana 92, no. 4 (April 1, 2019): 429–44. http://dx.doi.org/10.1163/15685403-00003882.
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Abstract The Atacama is the world’s driest desert. It contains various types of wetlands. In general, the diversity and structure of the zooplankton in these wetlands have been very little studied. The object of the present study was to analyse the specific composition and structure of the zooplankton in a transect which included highland bogs and an endorheic mountain river in the Altiplano of northern Chile. In 2017, samples of zooplankton were collected for qualitative and quantitative analysis in two types of wetlands. Eight taxa of zooplanktonic crustaceans were recorded. The results of null models revealed the absence of regulator patterns for all sites in species co-occurrence. Cluster analysis generated two groups with low similarity between them. The results observed in the correlation matrix showed significant direct associations between some species and the level of dissolved oxygen, conductivity and salinity.
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Witariningsih, Putu Maya, Yulianto Suteja, and I. Nyoman Giri Putra. "Komposisi Jenis Dan Fluktuasi Kelimpahan Plankton Secara Temporal Di Perairan Selat Lombok." Journal of Marine and Aquatic Sciences 6, no. 1 (September 25, 2020): 140. http://dx.doi.org/10.24843/jmas.2020.v06.i01.p17.
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Indonesian Throughflow (ITF) is a circulation of water mass in Indonesian, water are carrying from the Pacific Ocean to the Indian Ocean. When the water mass from the Pacific Ocean to Indonesian waters will mix with the water mass of Indian Ocean. One of the outflow is the Lombok Strait. The mixing of process bring nutrient-rich in bottom layer to rise to the upper layer and it will affect the fertility. One indicator of water fertility by measuring the abundance and distribution of plankton. The aims of this study to determine the temporal of composition species and fluctuations of plankton abundance temporally in the waters of the Lombok Strait. The study was conducted in the Lombok Strait in November 2017. Data was collected at one point and sample was only take on the surface of the waters. The genus composition of the most widely found phytoplankton Bacillariophyceae class (19 genera) and from the widely obtained zooplankton Hexanauplia class (7 genera). The highest abundance of phytoplankton occurs during high tide during afternoon. This phenomenon is caused by photosynthesis of phytoplankton in the water surface. In contrast to the abundance of the highest zooplankton occurs during high tide in the early morning. This is caused by zooplankton's daily vertical migration and negative phototaxis. Comparison of phytoplankton abundance with zooplankton abundance is inversely proportional, zooplankton abundance depends on abundance of phytoplankton, because phytoplankton grow faster by cell substraction, compared to phototaxis of in zooplankton. It is also a predation of phytoplankton by zooplankton.
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Isyaku, I. H., and S. Ibrahim. "Spatio-temporal distribution of zooplankton and physico-chemical conditions of Wasai Reservior, Kano State, Nigeria." Bayero Journal of Pure and Applied Sciences 12, no. 1 (April 15, 2020): 186–92. http://dx.doi.org/10.4314/bajopas.v12i1.30s.
Full textAbstract:
A study of spatio-temporal distribution of zooplanktonic community in relation to physico-chemical water condition of Wasai Reservoir was carried out between March and October, 2018. Three sampling sites selected for the purpose of this study were based on different human activities taking place in the areas like fishing, sand collection, washing etc. Nine physico-chemical and biological parameters were determined on fortnight basis 8:00 to 10:00am using standard methods. The result revealed that temperature, pH, Electrical conductivity, Total dissolved solids, Dissolved oxygen, Biochemical oxygen demand, transparency, nitrate and phosphate ranged from 24.4 to 29.1°C, 6.4 to 8.4, 353.3 to 846.6µS/cm, 264.3 to 602.8mg/L, 6.7 to 10.9mg/L, 2.8 to6.8mg/L, 5.6 to 12.3cm, 0.12 to 0.55mg/L and 0.08 to 0.22mg/L respectively. A total of thirteen (13) species of zooplankton were identified from the reservoir out of which three (3) belong to the class copepoda with a highest mean value of 37.67 recorded in May and lowest, 8.88 in October. Five species belong to the class Rotifera with a highest mean of 2.93 recorded in March and lowest in June (0.80). Similarly five species belong to the class Cladocera, with highest mean of 3.40 in April and lowest (0.27) in June and October respectively. The result showed seasonal variation in zooplankton species, as thier distribution increased in the dry season than in wet season, primarily due to the increase in photic depth of the water. Pearson correlation coefficient was used to determine the relationship between zooplankton and physico-chemical parameters. The correlation coefficient of physico-chemical parameters and zooplankton of the reservoir revealed strong positive correlation between zooplankton, EC, TDS, pH, Temperature and transparency at (P<0.05)while negative correlation exist between zooplankton, BOD5, DO, Nitrate and Phosphate at (P<0.05).
Keywords: Distribution, Diversity, Reservoir, Wasai, Zooplankton.
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Imanit, E. N., A. P. Novosyolov, A. G. Zavisha, and A. L. Levitskiy. "ANNUAL CHANGES IN SPECIFIC COMPOSITION AND QUANTITATIVE INDICATORS OF ZOOPLANKON IN LAKE GOLODNAYA GUBA LOWER REACHES OF PECHORA RIVER." EurasianUnionScientists 1, no. 11(56) (2018): 17–21. http://dx.doi.org/10.31618/esu.2413-9335.2018.1.56.17-21.
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The article presents the species composition and the quantitative indicators of zooplanktons of the lakeover a 30-year research period. It was found that the zooplankton's community is represented by taxa typical for North-ern reservoirs, including 65 species belonging to 37 genera, 19 families, 5 groups and 3 classes: Rotifera –17, Cladocera –27 and Copepoda –21. According to the dominant number of species, the summer zooplankton com-munity of the lake is characterized as a cladoceran's community. A characteristic feature the structure of the zoo-plankton’s community is the presence of several dominant species, from 10 to 71,6 % of the total population. The given information can be useful in solving issues related to the biological diversity lake's ecosystems in the region, as well as the development of rational use ways fisheries inland's waters of the Nenets Autonomous Okrug.
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Almeida, VLS, ÊW Dantas, M. Melo-Júnior, MC Bittencourt-Oliveira, and AN Moura. "Zooplanktonic community of six reservoirs in northeast Brazil." Brazilian Journal of Biology 69, no. 1 (February 2009): 57–65. http://dx.doi.org/10.1590/s1519-69842009000100007.
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The aim of the present study was to investigate the zooplankton community at six reservoirs in the state of Pernambuco (Brazil). Zooplankton assemblages were identified using current literature and quantitatively analysed under a microscope and stereomicroscope. Concurrently to the sampling of zooplanktonic and phytoplanktonic communities, in situ measurements of abiotic variables, such as water temperature, dissolved oxygen and pH, were determined using field probes and transparency was determined with a Secchi disk. Total phosphorus concentrations were used for the determination of the Trophic State Index. The reservoirs were classified between eutrophic and hypertrophic, oxygenated, with pH varying from slightly acid to alkaline, high temperatures and low water transparency. A total of 27 zooplankton taxa were identified. Phytoplankton was represented by Cyanophyta, Chlorophyta, Baccilariophyta and phytoflagellates. The highest richness of species was observed for Rotifera (17), followed by Crustacea (8), Protozoa (1) and Insecta (1). Rotifers shared quantitative importance with Crustacea, which were mainly represented by juvenile forms. Jazigo Reservoir presented the highest diversity and equitability. Lowest diversity and equitability were recorded at the Poço da Cruz and Mundaú reservoirs, respectively. Dissimilarity was detected between the environments studied regarding zooplankton composition and structure.
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Dwinovantyo, Angga, Henry M. Manik, Tri Prartono, Susilohadi Susilohadi, and Tohru Mukai. "Variation of Zooplankton Mean Volume Backscattering Strength from Moored and Mobile ADCP Instruments for Diel Vertical Migration Observation." Applied Sciences 9, no. 9 (May 6, 2019): 1851. http://dx.doi.org/10.3390/app9091851.
Full textAbstract:
Zooplankton can be detected by using acoustic Doppler current profiler (ADCP) instruments through acquiring the mean volume backscattering strength (MVBS) data. However, the precision of the backscattered signal measured by single ADCP measurement has a limitation in the MVBS variation of zooplankton. The objectives of this study were to analyze the MVBS and vertical velocity from ADCPs at the same time and location for zooplankton’s daily vertical migration (DVM) observation. Measurements were conducted in Lembeh Strait, North Sulawesi, Indonesia. Instruments used included a moored ADCP 750 kHz and a mobile ADCP 307.2 kHz. High MVBS value was found at 11.5–16 m depths and was identified as the sound scattering layer (SSL). The DVM patterns in the SSL displayed significant differences over time and had good relationships with the diurnal cycle. Theoretical target strength (TS) from the scattering models based on a distorted-wave Born approximation (DWBA) was estimated for Oithona sp. and Paracalanus sp.; the two dominant species found in the observed area. However, ΔMVBS and ΔTS proved that the dominant zooplankton species were not the main scatterers. The strong signal in SSL was instead caused by the schools of various zooplankton species.
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KEHAYIAS, G., A. RAMFOS, S. IOANNOU, P. BISOUKI, E. KYRTZOGLOU, A. GIANNI, and I. ZACHARIAS. "Zooplankton diversity and distribution in a deep and anoxic Mediterranean coastal lake." Mediterranean Marine Science 14, no. 1 (March 22, 2013): 179. http://dx.doi.org/10.12681/mms.332.
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The variation of the smaller size fraction of zooplankton was investigated during a two-year period in a brackish deep and anoxic coastal lake of western Greece (Aitoliko), along with the specific environmental characteristics of this ecosystem. The zooplanktonic community comprised a relatively small number of taxa and it was dominated by brackish-water calanoid copepods (Paracartia latisetosa, Calanipeda aquaedulcis) and in certain periods by rotifers and tintinnids. The zooplankton abundance showed an increase in the warmer period starting from late spring and reached maximum values in July. In the well oxygenated surface layer, temperature was the most important parameter influencing the seasonal cycles of all groups. In contrast, the oxygen depletion a few meters under the surface affected the vertical distribution of most of the zooplankton groups, which were found restricted in the surface layer especially from spring until autumn. Only the meroplanktonic larvae of polychaetes presented increased proportions in the deeper layers. Salinity has not significantly influenced the zooplanktonic assemblages. The results point out the degraded status of the Aitoliko basin where the hypoxic/anoxic layers resulted to a high portion of dead organic material identified as copepod carcasses, and underlines the necessity of monitoring of this ecosystem.
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Dhaswadikar Usha Sitaram. "Zooplankton composition and abundance from Nideban Reservoir, Udgir Dist. Latur." World Journal of Advanced Research and Reviews 12, no. 3 (December 30, 2021): 151–54. http://dx.doi.org/10.30574/wjarr.2021.12.3.0640.
Full textAbstract:
Zooplanktons are the microscope free swimming organisms of aquatic system. There are represented by a wide array of taxonomic groups of which the members belonging to protozoa, Rotifera, Cladocera and Copepoda are most common and often dominate the entire communities. They have many remarkable features which hamper their predation by higher organisms. The members of Zooplankton community are important for their role in trophic dynamics, energy transfer in the aquatic ecosystem. They provide food for fishes in the water bodies and play a major role in the fish production. The zooplankton community was studied by monthly samples taken from Oct. 2018 to Feb. 2019. The reservoir water is used for agriculture and fishery activities.
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Dhaswadikar, Usha Sitaram. "Zooplankton composition and abundance from Nideban Reservoir, Udgir Dist. Latur." World Journal of Advanced Research and Reviews 12, no. 3 (December 30, 2021): 151–54. https://doi.org/10.5281/zenodo.5804827.
Full textAbstract:
Zooplanktons are the microscope free swimming organisms of aquatic system. There are represented by a wide array of taxonomic groups of which the members belonging to protozoa, Rotifera, Cladocera and Copepoda are most common and often dominate the entire communities. They have many remarkable features which hamper their predation by higher organisms. The members of Zooplankton community are important for their role in trophic dynamics, energy transfer in the aquatic ecosystem. They provide food for fishes in the water bodies and play a major role in the fish production. The zooplankton community was studied by monthly samples taken from Oct. 2018 to Feb. 2019. The reservoir water is used for agriculture and fishery activities.
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Balakrishna, D. "LIMNOLOGICAL STUDIES OF HASANPARTHY LAKE, WARANGAL DISTRICT, TELANGANA, INDIA." International Journal of Zoology and Applied Biosciences 2, no. 6 (November 24, 2017): 266–69. https://doi.org/10.5281/zenodo.1312151.
Full textAbstract:
The present study includes the estimation of twelve various physico-chemical parameters and seasonal abundance of zooplankton of Hasanparthy lake during the year 2016-2017, Warangal, Telangana. The estimated physico-chemical parameters were Temperature, pH, Transparency, Total dissolved solids, Dissolved oxygen, Carbon dioxide, Total alkalinity, Chloride, Phosphate, Total hardness and Biological oxygen demand. This lake water is used for domestic and irrigation purpose in this area. All the estimated parameters are within the permissible limits of BIS, WHO standards. The four major groups of zooplankton were observed throughout the study period. The identified groups are Rotifera, Copepoda, Cladocera and Ostracoda respectively. Among the four groups Rotifera group of zooplanktons were most dominated species.
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Kar, Sulata, Papia Das, Uma Das, Maibam Bimola, Devashish Kar, and Gautam Aditya. "Correspondence of zooplankton assemblage and water quality in wetlands of Cachar, Assam, India: Implications for environmental management." Limnological Review 18, no. 1 (March 1, 2018): 9–19. http://dx.doi.org/10.2478/limre-2018-0002.
Full textAbstract:
AbstractThe zooplankton assemblage of selected wetlands of Assam, India was assessed to deduce the structural variation in the context of water quality parameters. A two year study between 2012 and 2014 comprising of 530 samples from the five wetlands revealed the presence of 46 taxa, 26 Rotifera, 15 Cladocera, 4 Copepoda and 1 Ostracoda, in varying density. The rotifers dominated in terms of abundance (48 ind. cm−3) followed by the cladocerans (28 ind. cm−3) and the copepods (19 ind. cm−3) and showed significant (p <0.05) correlations with turbidity, alkalinity, hardness and phosphate contents of the water samples. The diversity and the richness of the zooplankton showed an increasing trend with the water temperature. Among the different taxa, Brachionus sp. was most abundant followed by Mesocyclops sp. while Beauchampiella sp. was represented in the least numbers. Application of the cluster analysis allowed the segregation of the different zooplankton based on the similarities of abundance in the samples. The water quality parameters like temperature, alkalinity, turbidity, magnesium and calcium were observed to be significant contributors in shaping the zooplankton community composition of the wetlands, revealed through the correlations and canonical correspondence analysis. As an extension, the information can be used in monitoring the quality of the freshwater habitats of the concerned and similar geographical regions, using the zooplankton as the major constituents. The variations in the abundance of cladoceran, copepod and rotifer zooplanktons can be used to understand the mechanisms that sustain the food webs of the aquatic community of the freshwater bodies.