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1
Tun, Myo Min. "Experiment on growth response and Feed Conversion Ratio (FCR) of fishes by feeding BR Sludge from distillery spent wash at distillery factory in Yangon, Myanmar." Journal of Aquaculture & Marine Biology 8, no. 6 (2019): 207–10. http://dx.doi.org/10.15406/jamb.2019.08.00263.
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The two freshwater fishes, the catfish Pangasius pangasius (Hamilton, 1822) and the catla fish Catla catla (Hamilton, 1822)were experimented in small culture ponds for growth response and feed conversion ratio during the study period from October 2018 to January 2019. The Pangasius pangasius fish growth rates of test and control ponds were almost equal. The control growth rates of Catla catla fish were higher than the test pond. Among these fishes, the fish Catla catla was the soft bottom habitat and they preferred mud bottom sediments. Among them, the growth rates of fish Catla catla was less than other species. The FCR values of the test ponds are 12.7 of Pangasius pangasius fish and 21.5 of Catla catla fish. The FCR values of the control ponds are 14.9 of Pangasius pangasius fish and 23.8 of Catla catla fish. In the present study, the results of FCR values are very useful for BR Sludge from Distillery Spent Wash. The feeding ratio (FCR) of test ponds is less than control ponds that is very good useful for these culture fishes.
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Sangma, Phanindra, Md Abdul Wahab, Shahroz Mahean Haque, and Sanjib Kumar Mondal. "Integrated cage-cum-pond culture system with walking catfish (Clarias batrachus) in cages and tilapia (Oreochromis niloticus) in open ponds." Research in Agriculture Livestock and Fisheries 4, no. 3 (December 29, 2017): 221–27. http://dx.doi.org/10.3329/ralf.v4i3.35101.
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An experiment was conducted for a period of 97 days at the Fisheries Field Laboratory Complex, Bangladesh Agricultural University, Mymensingh to determine the potential of the cage-cum-pond culture of walking catfish, as well as to assess the economic and environmental benefits of this system. The experiment had two treatments in triplicate. One treatment comprised walking catfish in cage and tilapia in open pond, and the other treatment comprised both walking catfish and tilapia stocked together in open ponds. Ponds of both treatments were stocked with walking catfish and tilapia at a stocking density of 10,000 and 20,000 ha-1, respectively. Fishes in both treatments were fed with commercial pelleted feed (26% crude protein) twice daily at the rate of 10% body weight of walking catfish. All ponds were fertilized with urea and TSP at a rate of 50 kgha-1 bi-weekly. Survival of catfish was very low in both treatments ranging from 8.33 to 21.33%. Specific growth rate of catfish was significantly higher (P<0.021) in treatment-2 than in treatment-1 with a value of 2.42 and 1.69 g fish-1d-1, respectively. The net yield for catfish of treatment-1 and 2 were 49.67 and 43.45 kgha-1, respectively and there was no significant difference between the treatments. The survival rate of tilapia was 65.17 and 71.17% with daily weight gain of 2.31 and 2.22g fish-1 in treatment-1 and 2, respectively. Net yield were 817.00 and 790.63 kg ha-1, respectively and there were no significant difference in net yield of tilapia between treatments. Net profit obtained from integrated-cage-cum pond culture (Tk. 24,518 ha-197d-1) was higher than that of open pond (Tk 22,685 ha-197d-1).Res. Agric. Livest. Fish.4(3): 221-227, December 2017
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Ashari, Irvan Hasan, Tri Apriadi, and Winny Retna Melani. "Survival Rate and Growth of Economical Fishes in Tailing Ponds of Bauxite Post-mining in Senggarang, Tanjungpinang City." Omni-Akuatika 15, no. 2 (December 26, 2019): 84. http://dx.doi.org/10.20884/1.oa.2019.15.2.728.
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The tailing pond of bauxite post-mining in Senggarang, Tanjungpinang City, have been potency of natural feed sources from phytoplankton and zooplankton. Moreover, the water quality of the tailing pond of bauxite post-mining has begun to support fish life. The objective of this study was to determine the survival rate and growth of economical fish in tailings ponds of bauxite post-mining in Senggarang, Tanjungpinang. The research was conducted by field experiment using a completely randomized design. There were different fish varieties as treatment: tilapia (Oreochromis niloticus), gouramy (Osphronemus gouramy), and tambaqui (Colossoma macropomum). Every treatment was carried out 5 replications, with 6 fish in every cage replication. Monitoring the water quality and the fish survival on the 0th, 10th, 20th and 30th days. The survival of economical fishes in tailing ponds of bauxite post-mining from the highest to lowest were tambaqui (97%), tilapia (83%), and gouramy (40%), respectively. The growth of fishes length from the highest to the lowest were gouramy (0,223 cm), tambaqui (0,037 cm), and tilapia (0,018 cm). Meanwhile, all variety of fish tested had a decreased in weigh: gouramy -0,2310 grams, tilapia -0,4281 grams, and tambaqui -1,3498 grams. The management of tailing ponds of bauxite post-mining in Senggarang for fisheries activities can be carried out by tambaqui (C. macropomum) culture cage with several conditions such as measurement of carrying capacity and capacity, management of water quality, feed, and technical aspects of culture.Keywords: bauxite, economical fish, growth, survival rate, tailing ponds
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Sutarni, Putri Aji, Elisa Herawati, and Agung Budiharjo. "Prevalence of endoparasites and histopathological evaluation of intestine in Nile tilapia, Oreochromis niloticus (Linnaeus, 1758) from aquaculture pond in Janti, Polanharjo District, Klaten Regency." Jurnal Iktiologi Indonesia 21, no. 1 (February 1, 2021): 1–10. http://dx.doi.org/10.32491/jii.v21i1.547.
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Parasitic disease in aquaculture brings a great challenge to fish production. Appropriate control measure and treatment can be carried out if farmers are equipped with sufficient information on the existence of infection and its consequences on fish health. This study aimed to examine the prevalence of endoparasites in the intestine of Nile tilapia (Oreochrois niloticus) and any histological changes associated with the infection. Forty fishes were collected using purposive sampling technique at two location of aquaculture ponds in Janti village from September to December 2019. Each sampling size consisted of 10% of the total fish population in the pond. Identification of parasites was performed based on their morphology according to the standard method. Three genera of nematodes were found from fishes cultured at aquaculture ponds from local farmers, but not from that of PBIAT (Hatchery and Freshwater Fish Aquaculture). The endoparasites were identified as Cichlidogyrus sp., Acanthocephalus sp., and Ceratomyxa sp. with prevalence of 25% and intensity of 1.2%. Histological sections of the intestine of fish infected with these parasites showed alteration in the mucosa layers, such as edema and extension of the mucosa. Information on the presence of endoparasites and its effect on nile tilapia culture is important for fish farmers because it can be used as reference to control fish parasites effectively.
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Sultana, S., MS Rahman, KA Jackshay, and K. Hasan. "Effect of different amounts of feeds on growth and production of fishes in pond polyculture." International Journal of Agricultural Research, Innovation and Technology 10, no. 2 (January 21, 2021): 128–36. http://dx.doi.org/10.3329/ijarit.v10i2.51586.
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An experiment was carried out to evaluate the effects of different amounts of supplementary feeds on growth and production of fishes in polyculture where four different species such as rui (Labeo rohita), mrigal (Cirrhinus mrigala), common carp (Cyprinus carpio) and tilapia (Oreochromis niloticus) were cultured in 6 ponds under three treatments, each with two replications. Eighty fish per decimal were stocked along with the stocking ratio of 1:1:1:1 in all the treatments. Supplementary feeds of rice bran and wheat bran (1:1), at the amount of 5% of body weight were applied in 2 ponds (treatment I) as well as at the amount of 3% of body weight were used in 2 ponds (treatment II) and 2 ponds (treatment III) were as control where no supplementary feed was used. Urea and T.S.P were applied fortnightly at the rate of 60 g decimal-1 and 90 g decimal-1, respectively under all treatments. Physico-chemical and biological factors such as air and water temperature, transparency, rainfall, pH, dissolved oxygen, free CO2, total alkalinity, PO4-P and NO3-N, phytoplankton and zooplankton were studied fortnightly and the limnological conditions were more or less similar in the experimental ponds under three treatments. The calculated gross and net fish productions of fishes under treatment I, treatment II and treatment III were 8.87 and 7.33 ton ha-1 yr-1, 7.12 and 5.58 ton ha-1 yr-1 and 4.69 and 3.16 ton ha-1 yr-1, respectively. Percent increased of net fish productions of treatment I and treatment II were 231.97% and 176.59% higher than that of treatment III (control). The present study reveals that supplementary feeding in fish culture should be done along with fertilization because supplementary feeds are very important to enhance growth of fishes significantly.
Int. J. Agril. Res. Innov. Tech. 10(2): 128-136, December 2020
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Hossain, Md Alamgir, Md Motaher Hossain, Md Golam Rasul, and Mohammad Abu Jafor Bapary. "Public health and hygienic condition of retailers at fish markets in Sylhet Sadar of Bangladesh." Brazilian Journal of Biological Sciences 6, no. 12 (2019): 251–61. http://dx.doi.org/10.21472/bjbs.061223.
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The hygienic and sanitary conditions of majority of the retail fish markets are very poor and unhealthy that may have an impact on fish retailers. The present study was conducted in two retail fish markets located in Kajirbazar and Bondorbazar, in Sadar Sylhet, to assess the hygiene and sanitary condition of fish retailers. Information was collected through questionnaire interview and participatory rural appraisal (PRA) from the retailers and other value chain stakeholders. It was found that about 82% of fish retailers were permanent in these retail markets. The retailers are mainly involved in selling various species of fishes such as carps, catfishes, tilapia, koi, hilsa, shrimp and other small indigenous fishes. The sources of these fishes are mainly of nearby haors, river and ponds. The retailers get fishes from various suppliers and also collected from producers. The income level of fish retailers is relatively low although they are trying to improve their socio-economic conditions. Besides, about 9% of the retailers do not have any formal education whereas 70% and 21% have their education in primary and secondary level, respectively. Although the majority of the retailers were found literate, however, their knowledge on public health was seemed to be very poor. Due to lack of proper knowledge on public health, they are frequently affected by various diseases such as common cold, diarrhea, lesion, fever, skin disease and so on. Particularly, 48% of the fish retailers are affected by the lesion on hands, and 31% and 27% of retailers have been affected by the lesion between fingers or toes, respectively. About 20% of the retailers do not have adequate knowledge on fish quality or benefit of using ice in fish preservation in retail markets. Considering all together, the present study revealed that the retailers operated fish markets are ill-managed, unhygienic and unsatisfactory. The lack of proper fish preservation facilities, poor water supply and unplanned infrastructures are generally regarded as a noticeable problem in the retail markets. In addition, the lack of retailer’s education, consciousness about fish quality, lack of training on hygienic and sanitary conditions are seemed to be involved in spoiling or deteriorating fish quality before reaching to the consumers. Therefore, the proper education and training on hygienic and sanitary conditions as well as sufficient knowledge on maintaining fish quality is required for retailers involved in fish retailing in the markets. It can be concluded that the improvement of relevant facilities of fish markets and proper supervision by respective authorities can ensure the better public health for retailers and safe fish food for consumers.
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Talukder, Mohammad Golam Sarowar, ABM Mohsin, Md Akhtar Hossain, and Md Rafiqual Islam Khan. "Optimization of stocking weight in carp polyculture ponds under drought prone Barind area of Bangladesh." Journal of Fisheries 5, no. 3 (December 17, 2017): 519. http://dx.doi.org/10.17017/jfish.v5i3.2017.300.
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Increased temperature, decreased water level and reduced culture period of the ponds are considered as major problems for aquaculture promotion in drought prone Barind area of Bangladesh. In order to address these problems, an experiment was conducted to optimize the stocking weight for carp polyculture ponds in Tanore upazila of Rajshahi district, Bangladesh. Three different stocking weights were tested under three treatments (T1: 25±0.12g; T2: 50± 0.15g; and T3: 100±0.19g), each with three replications. Fish growing period (July-December), carp species (C. catla, H. molitrix, A. nobilis, L. rohita and C. mrigala), stocking density (7,410 fishes/ha), lime and ash treatment, fertilization and feeding were same for all the treatments. Water quality (water temperature, dissolved oxygen, transparency, pH and alkalinity) and fish growth parameters were monitored monthly. Mean values of water quality parameters were found within the suitable range for fish culture. Treatment T3 varied more significantly (P<0.05) than that of other treatments for the mean values of final weight, weight gain, specific growth rate, survival rate and yield of fish. Net benefit of carp polyculture was also found significantly (P<0.05) highest with treatment T3.
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Das, D. R., and K. J. Chandra. "INVESTIGATION OF DISEASES OF JUVENILE CATLA FROM CULTURE POND FARMING CONDITION IN MYMENSINGH." Bangladesh Journal of Veterinary Medicine 15, no. 1 (September 20, 2017): 71–80. http://dx.doi.org/10.3329/bjvm.v15i1.34059.
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Investigation on health conditions and diseases of juvenile catla (Catla catla) was carried out for clinical and histopathological observations from different farms of Mymensingh region. A total of eight (8) farms, four Government (Govt.) and four Private (Pvt.) fish farms were selected for the study. The Indian major carp - catla was examined during June, 2010 to May, 2012. Monthly samplings were carried out with 5 fishes from each farm. Altogether 960 fish hosts were examined during the study period. Water quality parameters such as temperature, dissolved oxygen, pH, ammonia, hardness, alkalinity, transparency and depth of water etc. were taken and management practices were investigated fortnightly interval. These were almost similar for all experimental ponds. The risk of being infestation by parasites of catla significantly (p<0.001) increased when the water quality parameters were not maintained the optimum level. Clinical examination of fishes was also carried out for any kind of abnormalities at monthly intervals. For histopathological studies skin, muscle, gill, liver and kidney were collected, processed and stained in Haematoxylin and Eosin. Histologically, catla of different fish farms were more affected in colder months (October to January). Structures of fish organs were normal from March to July. In the months of September, minor pathologies were found to be started and in the months of February the pathological condition of fish gradually reduced. Pathological changes like necrosis, fungal granuloma, protozoan and monogenean cyst, vacuolation, melanomacrophase, haemorrhage, hypertrophy, hyperplasia and clubbing were recorded in all the investigated organs. Among them fish gills and skin were more affected followed by liver and kidney. Again when considered individual fish farm, fish of Pvt. Fish farms were more affected than others. The study showed that severity of clinically and pathologically changes were gradually increased in November to January. During the period mixed infection of protozoa, monogenea and argulus were noticed in catla of the investigated farms.
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Hossain, Md Motaher, Mohammed Shafi, Md Kawser Ahmed, and M. Niamul Naser. "Comparative study of the production of closed water fishery resources inside and outside the embankment of Meghna Dhonagoda irrigation project." Bangladesh Journal of Zoology 39, no. 2 (May 14, 2012): 157–71. http://dx.doi.org/10.3329/bjz.v39i2.10583.
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A comparative carried out was done on the closed water fishery resources between inside and outside the embankment of Meghna Dhonagoda Irrigation Project (MDIP). This research explores that the culture fishery has been developed inside the MDIP project area after the construction of Flood Control, Drainage and Irrigation (FCDI) Project. The average production of fishes in closed water (ponds and borrow pits) was higher inside (2374.39 kg/ha and 2436.37 kg/ha) than outside (1984.32 kg/ha and 2075.01 kg/ha) in 2003-2004 and 2004- 2005. The significant difference (p<0.001) was found between the production of two zones. The overall production of closed water increased inside the embankment in all cases except culturable ponds. Production of culturable ponds was higher in outside due to the entrance of natural fish in inundated ponds during monsoon.DOI: http://dx.doi.org/10.3329/bjz.v39i2.10583Bangladesh J. Zool. 39(2): 157-171, 2011
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Bársony, Péter, László Pócsi, and András Szabó. "Study of the Interaction Between Common Carp (Cyprinus carpio L.) and Silver Crucian Carp (Carassius auratus gibelio B.)." Acta Agraria Debreceniensis, no. 13 (May 4, 2004): 16–19. http://dx.doi.org/10.34101/actaagrar/13/3374.
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During the last few years, the spread of the silver crucian carp caused significant problems in pond fish culture. One of the main challenges of the successful fish production in fishponds, is to rid ponds of the silver crucian carp. In the course of the experiment, carp fry were stocked in 5 nursing ponds at the same stocking rate, with different (0-, 50-, 100-, 150-, 200%) stocking rates of silver crucian carp fry, respectively. During the breeding season, weekly test fishings were made to examine the growth of the fishes. At the end of the experiment, the yield/hectar and the growth rates were calculated. The experiment proved that the presence of the silver crucian carp in the fishponds causes lower productivity and growth rates in common carp. In the control pond (with no silver crucian carp), the average weight of the common carp was over 20 g and the yield/hectar was over 700 kg, while in the pond with the most silver crucian carp, the average weight of the common carp was 4.5 g and the yield/hectar was only 123 kg.
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DAS, RAKHI, MD SHARIFUL ISLAM, and KHAN KAMAL UDDIN AHMED. "Polyculture potentials of Galda (Macrobrachium rosenbergii) with Heteropneustes fossilis and Clarias batrachus in South-western coastal ghers of Bangladesh." Bangladesh Journal of Fisheries 32, no. 1 (July 2, 2020): 29–38. http://dx.doi.org/10.52168/bjf.2020.32.04.
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Prawn (Macrobrachium rosenbergii) culture is socially more acceptable, technically and economically viable and sustainable. The freshwater catfishes Heteropneustes fossilis (shing) and Clarias batrachus (magur) adapt well to hypoxic water bodies and high stocking densities as well. So, shing and magur may be a good candidate to culture with prawn in ponds/ghers to save the farmers from losing their investment in case of shrimp mortality and getting additional income from fish. With this view, this study was conducted to evaluate the feasibility of polyculture with three treatments each with three replications. Stocking density of shing was variable i.e., 200nos/decimal in T1, 300nos/decimal in T2 and 400 nos/decimal in T3. On the other hand, stocking density of magur and prawn juveniles was 50 and 30 nos/decimal respectably for all treatments. The experimental ghers were treated with salt (NaCl) (150g/decimal), potasium permanganate (5g/decimal) along with lime (125 kg/ha). After stocking fish were fed using floating nursery feed containing 32%, protein and 7% lipid at the rate of 10-2% for shing and magur nursing, floating oil coated grower feed (27% protein and 6% lipid) at the rate of 6-2% for shing and magur grow out and prawn grower (30% protein and 7% lipid) at the rate of 6-2.5% of estimated fish and prawn biomass. At least 10% of stocked catfish and galda were sampled fortnightly using cast net. Physico-chemical parameters of the experimental ghers water were monitored at weekly. After six months of culture the highest growth performance (47.0 g) and survival (19.94%) for shing obtained from T3. Whereas the average growth of shing was recorded 37.02 and 41.14g; growth of magur 99.21g and 99.51g and growth of galda 69.74 and 70.19 for Treatment T1 and T2 respectively. Except ammonia and iron content the other observed parameters of ghers water found congenial for fish health. The value of Benefit-Cost Ratio (BCR) was 1.4 that seems to be profitable and feasible of this polyculture practice.
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HASSAN, RASHIDUL, FAHMIDA AKTER, MD ASEK UDDIN, TAMANNA TABASSUM, MD ABDULLAH AL MAHAMUD, GIAS UDDIN AHMED, and TANVIR RAHMAN. "Intestinal morphology of Thai pangas (Pangasianodon hypophthalmus) under probiotic supplemented conditions." Bangladesh Journal of Fisheries 32, no. 2 (January 14, 2021): 229–36. http://dx.doi.org/10.52168/bjf.2020.32.27.
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The present study was conducted to evaluate the effects of probiotic supplementation on theintestinal morphology of Thai pangasius (Pangasianodonhypophthalmus). The experiment was conducted in15 earthen ponds of 0.75 dec. each. Each pond contained 600 fingerlings/decimal(5.69±1.23 g) and thefeeding trial was performed for 90 days. Commercially available gut nutrient additive, Mutagen and pHFIXER (water additive probiotic) were used in the experiment. Five treatments were conducted each havingthree replicates.Treatment 1 (T1) was provided with gut probiotics, treatment 2 (T2) with water probiotics,Treatment 3 (T3) with50% gut probiotic and 50% water probiotic; Treatment 4 (T4) with prebiotic (yeast andrice starch) and 50% gut and 50% water probiotic.Treatment 5 (T5) was designed as control. Fishes were fedtwice a day at the rate of 10-5% of body weight. Samplings were carried out fortnightly where gut sampleswere collected for histology and water quality parameters were recorded. All water quality parameters werefound to be favorable for fish culture. Histological analysis of the gastrointestinal tract revealed that foldlength, width and enterocyte height were significantly larger (p<0.05) in fish of T3 and T4compared to thoseof T1, T2, T5. Thus, probiotic supplementation can improve the intestinal morphology of Thai pangasiuswhich may increase the nutrient absorption in fish and thereby increase the digestion capacity.
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Romaidi, Romaidi, Bayu Agung Prahardika, and Muhammad Asmuni Hasyim. "UPAYA PENINGKATAN EKONOMI DAN PENGURANGAN SAMPAH DOMESTIK MASYARAKAT SUMBERSARI MELALUI PEMANFAATAN ALIRAN SUNGAI UNTUK BUDIDAYA IKAN MUJAIR." Journal of Research on Community Engagement 1, no. 2 (March 29, 2020): 54. http://dx.doi.org/10.18860/jrce.v1i2.8839.
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One of the biggest threats from human activities to rivers is the increasing number of residential areas around or even just above the river flow. This condition is certainly very threatening the sustainability of rivers in the region. One of the biggest threats is that the garbage produced by the community will be directly disposed of in the river flow. One way that can be done to reduce waste disposal in the river is by utilizing river flow, so that many rivers are now increasingly being developed as a vehicle for habitat conservation, because the river is considered important for various aquatic plants, migratory and sedentary fishes, and aquaculture ponds, birds and several types of mammals. In this case, the concept of river management must be based on environmental, ecological, economic and social aspects according to the characteristics of the surrounding community. The purpose of this community service is to utilize river flow for tilapia fish farming. The method used in the service is the PAR by way of lectures and direct practice in aquaculture with karamba by utilizing river flow. From the results of community service including partners showed that some respondents know how to fish with karamba, but do not know that river flow can also be used for fish farming with the karamba system. As well as the results of fish farming practices with the karamba system most of the respondents agreed agree (73%) if the fish culture using the karamba system is used as an alternative business idea related to river flow utilization and 60% of respondents agree the use of river flow for fish cultivation can reduce waste disposal in the river.
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Pouyaud, L., R. Gustiano, and G. G. Teugels. "CONTRIBUTION TO THE PHYLOGENY OF THE PANGASIIDAE BASED ON MITOCHONDRIAL 12S RDNA." Indonesian Journal of Agricultural Science 5, no. 2 (October 25, 2016): 4562. http://dx.doi.org/10.21082/ijas.v5n2.2004.4562.
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Catfishes are generally one of the economically important groups of fresh and brackish water fishes in the world. In many countries, they form a significant part of inland fisheries, and several species have been introduced in fish culture. Judging from literature, the main constraint to cultivate wild species and to optimise the production of pangasiid catfishes is due to the poorly documented systematics of this family. In the present contribution, the phylogenetic relationships within Pangasiidae are studied to contribute to a better insight in their taxonomy and evolution. The genetic relatedness is inferred using mitochondrial 12S rDNA gene sequences. To resolve the phylogenetic position of Laides in this group of catfish, five genera of Asian and African Schilbeidae are also considered. The results showed that a species group (complex) could be clearly seen in the genetic tree. Pangasius is more derive than the other genera. By using approximate molecular clock/evolutionary calibration from mitochondrial gene, a new episode of speciation for the family marked explosive radiation about 5- 8 million years ago (mya). This adaptive radiation extended until the Late Pleistocene. Regarding the relationships between the Pangasiidae and Schilbeidae, two families show an allopatric distribution with slight overlap. The Pangasiidae occur mainly in Southeast Asia, while the Schilbeidae are seen mainly on the Indian subcontinent (including Myanmar) and Africa. It confirms the separation between Schilbeidae and Pangasiidae occurred in the Early Miocene.
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Pouyaud, L., R. Gustiano, and G. G. Teugels. "CONTRIBUTION TO THE PHYLOGENY OF THE PANGASIIDAE BASED ON MITOCHONDRIAL 12S RDNA." Indonesian Journal of Agricultural Science 5, no. 2 (October 25, 2016): 4562. http://dx.doi.org/10.21082/ijas.v5n2.2004.p4562.
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Catfishes are generally one of the economically important groups of fresh and brackish water fishes in the world. In many countries, they form a significant part of inland fisheries, and several species have been introduced in fish culture. Judging from literature, the main constraint to cultivate wild species and to optimise the production of pangasiid catfishes is due to the poorly documented systematics of this family. In the present contribution, the phylogenetic relationships within Pangasiidae are studied to contribute to a better insight in their taxonomy and evolution. The genetic relatedness is inferred using mitochondrial 12S rDNA gene sequences. To resolve the phylogenetic position of Laides in this group of catfish, five genera of Asian and African Schilbeidae are also considered. The results showed that a species group (complex) could be clearly seen in the genetic tree. Pangasius is more derive than the other genera. By using approximate molecular clock/evolutionary calibration from mitochondrial gene, a new episode of speciation for the family marked explosive radiation about 5- 8 million years ago (mya). This adaptive radiation extended until the Late Pleistocene. Regarding the relationships between the Pangasiidae and Schilbeidae, two families show an allopatric distribution with slight overlap. The Pangasiidae occur mainly in Southeast Asia, while the Schilbeidae are seen mainly on the Indian subcontinent (including Myanmar) and Africa. It confirms the separation between Schilbeidae and Pangasiidae occurred in the Early Miocene.
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Rabbane, Md Golam, Md Feroz Ahmed, Mohammad Shamimul Alam, and Md Motaher Hossain. "Culture, reproduction and embryogenesis of wild zebrafish (Danio rerio) in laboratory condition." Dhaka University Journal of Biological Sciences 25, no. 2 (July 20, 2016): 139–48. http://dx.doi.org/10.3329/dujbs.v25i2.46336.
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Zebrafish (Danio rerio: Hamilton, 1822) is a well-known model organism of biological research. Generally it is found in the fresh water ponds. However, the culture, breeding and embryonic development of wild D. rerio of Bangladesh is scarcely represented in the literature. Therefore, a laboratory experiment was conducted to study these aspects of local zebrafish. Water quality parameters for adult fish husbandry system were recorded. These were temperature (°C) 29.18 ± 1.53, pH 7.55 ± 0.144, TDS (ppm) 225 ± 11.136, (ORP) 48.93 ± 26.04, DO (ppm) 1.24 ± 0.591, conductivity (mS/cm) 0.450 ± 0.022, are resistivity (Mῼcm) 0.0026 ± 0.00049 for adult fish tanks. The parameters obtained from larvae rearing ranks were temperature (°C) 29.56 ± 0.777, pH 7.73 ± 0.421, TDS (ppm) 198.33 ± 39.627, (ORP) 51.37 ± 17.387, DO (ppm) 2.02 ± 0.694, conductivity (mS/cm) 0.397 ± 0.079, resistivity (MΩcm) 0.0026 ± 0.00044. After one month of rearing, adult male and female fishes were selected for natural breeding and spawning and obtained 87.5 ± 7.72% spawning success, 96.83±0.81% fertilization rate and 94.89 ± 0.27% hatching rate. The embryonic development for zygote, cleavage, blastula, gastrula, segmentation and pharyngula periods were observed and obtained proper development for each state at 28.5ºC. The survival rate of hatchlings was 10 - 20% up to 20 days post fertilization. The higher spawning success, fertilization rate, hatching rate and survival rate indicate the possibility and potentiality of culturing zebrafish in laboratory conditions and could be established as a model animal for Bangladeshi researchers.
Dhaka Univ. J. Biol. Sci. 25(2): 139-148, 2016 (July)
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Jiménez-Prada, Pablo, Ismael Hachero-Cruzado, Inmaculada Giráldez, Catalina Fernández-Diaz, César Vilas, José Pedro Cañavate, and José Manuel Guerra-García. "Crustacean amphipods from marsh ponds: a nutritious feed resource with potential for application in Integrated Multi-Trophic Aquaculture." PeerJ 6 (January 12, 2018): e4194. http://dx.doi.org/10.7717/peerj.4194.
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Coastal protection, nutrient cycling, erosion control, water purification, and carbon sequestration are ecosystem services provided by salt marshes. Additionally, salt ponds offer coastal breeding and a nursery habitat for fishes and they provide abundant invertebrates, such as amphipods, which are potentially useful as a resource in aquaculture. Fishmeal and fish oil are necessary food resources to support aquaculture of carnivorous species due to their omega-3 long-chain polyunsaturated fatty acids (n-3 LC-PUFA). Currently, aquaculture depends on limited fisheries and feed with elevated n-3 LC-PUFA levels, but the development of more sustainable food sources is necessary. Amphipods appear to be a potential high quality alternative feed resource for aquaculture. Hence, a nutritional study was carried out for several main amphipod species—Microdeutopus gryllotalpa,Monocorophium acherusicum,Gammarus insensibilis,Melita palmataandCymadusa filosa—in terrestrial ponds in the South of Spain. These species showed high protein content (up to 40%), high n-3 PUFA and phospholipid levels, and high levels of phophatidylcholine (PC), phosphatidylethanolamine (PE) and triacylglycerols (TAG), the latter being significantly high forM. acherusicum.M. gryllotalpaandM. acherusicumshowed the highest proportion of lipids (19.15% and 18.35%, respectively). Isoleucine, glycine and alanine were the dominant amino acids in all species. In addition, amphipods collected from ponds showed low levels of heavy metals. Furthermore, the biochemical profiles of the five species of amphipods have been compared with other studied alternative prey. Therefore, pond amphipods are good candidates to be used as feed, and are proposed as a new sustainable economic resource to be used in aquaculture.G. insensibilismay be the best for intensive culture as an alternative feed resource because it shows: (1) adequate n-3 PUFA and PL composition; (2) high levels of glycine, alanine, tyrosine, isoleucine and lysine; (3) high natural densities; (4) large body size (≥1 cm), and (5) high concentration of calcium. Moreover, a combined culture of amphipods and fishes in these marsh ponds seems a promising and environmentally sustainable way to develop Integrate Multi-Trophic Aquaculture (IMTA) in these ecosystems.
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Jahan, I., MS Islam, MM Shamsuzzaman, I. N. Suravi, M. Akter, and D. Sutradhar. "Growth performance and cost-benefit analysis of brackishwater fin fishes (Mugil cephalus and Rhinomugil corsula) with prawn (Macrobrachium rosenbergii) in polyculture at coastal ponds." Journal of the Asiatic Society of Bangladesh, Science 47, no. 1 (June 21, 2021): 67–78. http://dx.doi.org/10.3329/jasbs.v47i1.54187.
Full textAbstract:
The study was carried out to observe growth, production and profit of prawn, stripped mullet (Mugil cephalus) and corsula mullet (Rhinomugil corsula) at different stocking ratio under polyculture in the Bagerhat district for four months. The experiment was designed as a randomized block design and had three treatments based on stocking ratio with three replicates in each treatment. Juveniles of prawn (Macrobrachium rosenbergii) and fingerlings of fin fishes (stripped mullet and corsula mullet) were stocked at a stocking ratio of 3:1:1, 4:1:1 and 5:1:1/m2 in T1, T2 and T3, respectively. Prawn and fin fishes were fed with a commercial diet and farm made formulated feed on a daily basis. Recorded water quality parameters were within suitable ranges of prawn and fish culture. Higher growth (43.0 g) of the prawn was achieved in T1 followed by T2 (41.0 g) and T3 (38.0 g), but prawn growth was not significantly different between T1 and T2. The growth and survival rate of prawn, stripped mullet and corsula mullet were lower in T3, where the stocking ratio was higher. Higher production of the prawn was obtained in T2 (1148.0 kg/ha) than those of T1 (954.6 kg/ha) and T3 (1083.0 kg/ha). But significantly (p<0.05), higher production of stripped mullet was found in T1 (650.0 kg/ha) and T2 (579.5 kg/ha) than T3 (500.5 kg/ha). Similarly, higher production of corsula mullet was found in T1 (850.0 kg/ha) and T2 (834.9 kg/ha) than T3 (719.8 kg/ha). However, combined production and net profit of prawn and fin fish farming were significantly (p<0.05) higher in T2 (2562.4 kg/ha, BDT 277,384.51/ha) followed by T3 (2303.3 kg/ha, BDT 229,693.95/ha) and T1 (2454.6 kg/ha, BDT 179,393.31/ha). So from a production and economic point of view, polyculture of prawn and fin fish at a stocking ratio of 4:1:1/m2 is more profitable compared to other stocking ratios and this system may be suggested to disseminate at coastal farmers’ level.
J. Asiat. Soc. Bangladesh, Sci. 47(1): 67-78, June 2021
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Tahapari, Evi, Jadmiko Darmawan, and Raden Roro Sri Pudji Sinarni Dewi. "DAYA ADAPTASI TIGA SPESIES IKAN PATIN PADA LINGKUNGAN YANG BERBEDA." Jurnal Riset Akuakultur 12, no. 3 (January 5, 2018): 253. http://dx.doi.org/10.15578/jra.12.3.2017.253-261.
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Penampilan fenotipe suatu organisme ditentukan oleh faktor genotipe dan faktor lingkungan tempat organisme tersebut hidup. Penelitian ini bertujuan untuk mempelajari daya adaptasi tiga spesies ikan patin yang dipelihara di lokasi berbeda. Ikan patin siam, patin jambal, dan patin pasupati dengan rataan bobot 20 g dipelihara di tiga lokasi yang berbeda, yaitu: kolam air tenang, tambak, dan keramba jaring apung. Pemeliharaan ikan dilakukan selama empat bulan. Selama pemeliharaan, ikan diberi pakan berupa pelet komersial dengan kadar protein 30%–32%. Jumlah pakan yang diberikan pada bulan kesatu sampai keempat secara berturut-turut adalah sebanyak 5%, 4%, dan 3% dari biomassa ikan per hari. Pakan diberikan dengan frekuensi tiga kali sehari. Hasil penelitian menunjukkan adanya interaksi yang signifikan antara genotipe ikan patin dengan lingkungan ekosistem yang berbeda dan daya adaptasi yang spesifik dari ketiga spesies ikan patin. Ketiga spesies ikan patin memiliki pertumbuhan sama bila dipelihara di kolam air tenang. Ikan patin jambal tumbuh dengan baik (P<0,05) jika dipelihara di keramba jaring apung (KJA) dan tambak, masing-masing dengan laju pertumbuhan spesifik (LPS) 2,51±0,15%/hari, dan LPS 2,39±0,04%/hari. Pertumbuhan ikan patin siam dan pasupati adalah sama pada ketiga lokasi penelitian (P>0,05). Ketiga spesies ikan patin mempunyai daya adaptasi lingkungan yang sempit sehingga budidayanya akan optimal jika dilakukan di lokasi tertentu saja.The phenotypic appearance of an organism is determined by genotypes and environmental factors in which the organism lives. This study aims to study the adaptability of three species of pangasiids reared in three different environments. Three species of catfish (Siamese pangasiid, jambal pangasiid, and pasupati) with an average weight of 20 gwere kept in stagnant water pond, brackishwater pond, and floating net cage). Fishes were reared for four months. During the rearing, fish were fed by commercial pellets with 30%-32% protein content. The amount of feed given in the first month to the fourth month was 5%, 4%, and 3% of the biomass per day. Feed was given three times a day. The results showed the significant interaction between pangasiid genotype and environment, and specific adaptability on three species of pangasiid. Jambal pangasiid grew better in floating net cage (SGR 2.51±0.15%/day). Pasupati pangasiid grew better in stagnant water pond (SGR 2.05±0.03%/day). Siamese pangasiid grew better in stagnant water pond (SGR 2.02±0.05%/day) and brackishwater pond (SGR 2.31±0.09%/day). The three species of catfish have a narrow environmental adaptability so that the cultured will be optimal if done in a particular location.
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Hossain, Md Akhtar, Md Anwar Hossain, Md Ayenuddin Haque, Md Mostafizur Rahman Mondol, and Md Harun Ur Rashid. "Determination of suitable species combination for good aquaculture practice based carp fattening in ponds under drought prone barind area of Bangladesh." Archives of Agriculture and Environmental Science 5, no. 2 (June 25, 2020): 114–22. http://dx.doi.org/10.26832/24566632.2020.050205.
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Increased temperature, decreased water level and reduced culture period of the ponds with lack of guidelines in selecting appropriate stocking size, density and combination of species are major constraints for safe production of fattening based carps in drought prone barind area of Bangladesh. In order to address these problems, an experiment was conducted during July-December, 2018 to determine the suitable species combination for fattening ponds of overwintered carps in Tanore upazila (sub district) of Rajshahi district, Bangladesh. Three different combinations of surface (G. catla and H. molitrix), column (L. rohita) and bottom (C. cirrhosus and C. carpio var. specularis) feeding carp species were tested under 3 treatments (T1, T2 and T3), each with 3 replications: T1 (Surface-30%, column-40%, and bottom-30%), T2 (Surface-40%, column-30%, and bottom-30%) and T3 (Surface-35%, column-35%, and bottom-30%). Application of good aquaculture practices in the studied ponds was found to improve the environmental conditions of pond. Significantly (P< 0.05) highest fish yield was obtained from treatment T2 which was 21.47% and 11.89% higher than T1 and T3, respectively. Significantly (P<0.05) highest cost benefit ratio was recorded with treatment T2 (0.42±0.02) followed by T3 (0.31±0.01) and T1 (0.21±0.01), respectively. Inclusion of appropriate number of fishes at different water layers of pond favoured the yield and economics of carp fattening. The study also suggests focusing on optimal stocking density together with the formulation of low cost feed for carp fattening in ponds under barind area of Bangladesh.
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Karlopia, Sanjeev Kumar, Yahya Bakhtiyar, and Seema Langer. "Comparison of the Growth Potential of Macrobrachium rosenbergii in Mono and Polyculture Conditions in Earthen Culture Ponds of Jammu, India." Journal of Ecophysiology and Occupational Health 19, no. 3&4 (December 26, 2019): 112. http://dx.doi.org/10.18311/jeoh/2019/23499.
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The study was conducted to assess the growth and survival of <em>Macrobrachium rosenbergii</em> in earthen culture ponds in order to know about the growth potential of <em>M. rosenbergii</em> in mono as well as polyculture conditions in Jammu. Polyculture experiments of prawn with some selected carps Indian Major Carps (<em>Cirrhinus mrigala</em> and <em>Labeo rohita</em>) and Exotic Carps (<em>Cyprinus carpio</em>) were undertaken in 3 freshwater ponds for duration of 4 months. Under the monoculture conditions, prawns attained an average size of 10.40 ± 0.17 cm weighing 23.84 ± 0.32 g in 4 months and the survival rate was found to be more than 75%. The growth rate of prawns was found to increase steadily during the first half (upto mid-October) after which a decline in the growth rate was evident as the mean temperature reached below 18°C. In the polyculture ponds the prawns attained an average size of 10.10 ± 0.03 cm weighing 18.39 ± 0.89g (without<em> C. carpio</em>) and 8.4 ± 0.36 cm weighing 15.23 ± 0.36 g (with <em>C. carpio</em>) in 4 months and their survival rate was less than 70%. Prawns being benthic feeders utilized the leftover food (of the fishes) that settled at the bottom, therefore, saving the feed cost. It was observed that mean size of the fish attained in the polyculture practice was almost similar to that obtained in the monoculture. The ideal prawn polyculture should be practiced with fast growing compatible carps such as Rohu and grass carp. Bottom feeder carps such as Mrigal (<em>C. mrigala</em>) should be avoided in prawn polyculture practice as they compete with prawns in feeding.
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Resende, EK, DKS Marques, and LKSG Ferreira. "A successful case of biological invasion: the fish Cichla piquiti, an Amazonian species introduced into the Pantanal, Brazil." Brazilian Journal of Biology 68, no. 4 (November 2008): 799–805. http://dx.doi.org/10.1590/s1519-69842008000400014.
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The "tucunaré", Cichla piquiti, an exotic Amazonian fish has become established along the left bank of the Paraguay River in the Pantanal. It was introduced by escaping from culture ponds in the Upper Piquiri River and spread downstream, along the lateral flooded areas of that river, continuing through the clear waters of the left bank of the Paraguay River and reaching south as far as the Paraguai Mirim and Negrinho rivers. Adult spawners have been found in the region, meaning that it is a self-sustained population. Reproduction occurs in the period of low waters. They were found feeding on fishes of lentic environments belonging to the families Characidae, Cichlidae and Loricariidae. Until the end of 2004, its distribution was restricted to the left bank of the Paraguay River, but in March 2005, some specimens were found on the right bank, raising a question for the future: what will be the distribution area of the tucunaré in the Pantanal? Information about its dispersion is increasing: it is known to be in the Tuiuiú Lake, Pantanal National Park and in the Bolivian Pantanal, all of them on the right bank of the Paraguay River. The hypothesis that the "tucunaré" could not cross turbid waters, such as in the Paraguay River, was refuted by these recent findings. Possibly, the tucunaré's capacity to lay more than one batch of eggs in a reproductive period, as well as its care of eggs and young, lead them to establish themselves successfully in new environments, as has been observed in the Pantanal and other localities.
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Afolabi, Olajide Joseph, Fayokemi Christianah Olususi, and Olusola Olasumbo Odeyemi. "Comparative study of African catfish parasites from cultured and natural habitats." Bulletin of the National Research Centre 44, no. 1 (September 18, 2020). http://dx.doi.org/10.1186/s42269-020-00419-4.
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Abstract Background The study was conducted to compare parasitic loads of Clarias gariepinus from cultured and natural habitats. A total number of 80 live adults (200–799 g) C. gariepinus comprising of 20 each were randomly obtained from two cultured habitats (ponds) and two natural habitats (rivers). In the laboratory, these fish were all examined for the presence of parasites. Their sexes were identified while the lengths and weights were measured and recorded prior to dissection. The parasites observed were also identified using morphological characteristics. Results Out of the 80 C. gariepinus sampled, 43 (53.75%) were infected and a total of 409 parasites comprising of 141 (34.47%) ectoparasites and 268 (65.53%) endoparasites were observed from the infected fish. The prevalence of parasitic infection in cultured and natural habitats was 20% and 33.75%, respectively. The results showed that there was a significant difference (P < 0.05) in parasitic infection of C. gariepinus obtained from cultured and natural habitats. Parasitic loads were observed to be significantly higher in natural habitat (33.74% and 26.16% for river A and river B, respectively) compared to cultured habitat (20.54% and 19.55% for pond A and pond B, respectively). The prevalence of parasites in relation to sexes of C. gariepinus was not significantly different (P > 0.05) for both habitats. It was also noted that catfishes with body weight 500–599 g had the highest prevalence (100%) both in cultured and natural habitats. Conclusions The study showed that the parasite loads were more in C. gariepinus obtained from natural habitat compared to those obtained from cultured habitat. It is therefore recommended that the sanitary conditions under which fishes are reared in fish pond should be improved and fish stocked from natural habitats or unscreened ponds should be quarantined to eliminate and treat possible parasitic infection before introducing them into other fish ponds.
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Osuntokun, Oludare Temitope, Adewole Adeyemo Muniru, and Komolafe Temitope Morenike. "Bacteriological Assessment of African Catfish (Clarias gariepinus) Isolated from Earthen and Concrete Fish Pond." Asian Journal of Biochemistry, Genetics and Molecular Biology, November 17, 2020, 17–34. http://dx.doi.org/10.9734/ajbgmb/2020/v6i130143.
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The purpose of this research work is to evaluates, isolate, identify, characterized and compare the bacteria load in African Catfish (Clarias gariepinus) from Earthen and Concrete Fish Pond. African Catfish (Clarias gariepinus) is a choice culture fish and an African delicacy to African consumers. Concrete pond and Earthen pond are the two types of ponds used in fish farming in West Africa. An earthen pond is a water body that is enclosed by earth while a concrete pond are pond constructed with bricks (plastered) or tanks. Clarias gariepinus were obtained from the earthen and concrete ponds from Adekunle Ajasin University, Akungba–Akoko, Ondo state, Nigeria. The fishes were harvested and eviscerated and different organs of the fish were collected for the purpose of this research work. Isolation of bacteria was done using the streaking method of cultural media. Preliminary characterization of bacterial isolates were based on Gram staining, morphological and cultural characteristics. Further characterization was carried out with various biochemical tests (Catalase, Citrate, Indole, Oxidase test, Starch hydrolysis, Urease and Sugar fermentation) and Bergey’s manual Microbiology. In concrete pond, it was observed that Bacillus subtilis was the most percentage frequently distributed bacteria isolate in Clarias gariepinus with (8%) Staphylococcus aureus (9.5%), Alcaligenes xylosidans (4.7%), Alcaligenes paradoxus (4.7%), Acinetobacter calcoa ceticus (4.7%), Pseudomonas putida (4.7%), Bacillus cereus (23.8%), Citrobacter amalonaticus (9.5%), Acinetobacter baumanni(4.7%), Listeria grayi(9.5%) and Listeria monocytogenes (4.7%) while In earthen pond Enterococcus gallinarum (4.0%), Streptococcus ub eris (8.0%) and Micrococcus luteus(4.0%) was the most frequently distributed bacteria isolate in Clarias gariepinus earthen pond, Marinococcus halophilus(4.0%),Enterobacter aerogenes (4.0%), Micrococcus lylae (4.0%), Alcalige nes faecalis(4.0%), Enterococcus molodoratus (4.0%), Enterococcus gallinarum (8.0%), Bacillus pumilus (4.0%), Citrobacter freundii (4.0%), Sporosa rcina inulinus (4.0%), Deinococcus radiodurans (4.0%), Vibrio marinus(4.0%), Listeria murrayi (4.0%), Deinobacter grandis(4.0%), Deinococcus proteolyticus (4.0%), Bacillus lautus(4.0%) and Micrococcus halobius (4.0%). Highest viable colony counts (5.6 × 104 for C. gariepinus were found in the concrete pond and (6.3 × 104) from the earthen pond respectively. Alimentary canal of fish in the concrete pond has the highest value of 4.73±0.81a and fish body has the lowest values (3.53±0.99a).Fish water has the highest value (4.33±1.15a) and lowest value (2.20±1.2a)) were found in earthen pond. It can be concluded that this organisms isolated from C. gariepinus in this study has the potential of becoming pathogenic and dangerous health risk and constitute severe economic loss to fish farmers and general populate especially those that consume catfish, therefore the Catfish should be raised in an hygienic and properly processed methods before consumption.
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Debnath, Chandan, Kiran Dube, Neelam Saharan, Virendra Kumar Tiwari, Mrinmoy Datta, and Lopamudra Sahoo. "Assessment of growth and production potential of Indian butter catfish Ompok bimaculatus as a substitute for mrigal Cirrhinus mrigala in polyculture of Indian major carps." Indian Journal of Fisheries 67, no. 4 (December 31, 2020). http://dx.doi.org/10.21077/ijf.2020.67.4.65052-06.
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The growth and production of Indian butter catfish Ompok bimaculatus, popularly known as ‘pabda’ with Indian major carps (IMCs, catla, rohu and mrigal) was evaluated with an aim to introduce this fish into carp-based polyculture systems. Nine earthen ponds of similar dimensions were used for this study. The duration of culture was eight months and three species compositions, viz., catla, rohu and mrigal (4:3:3) (T1), with 100% replacement of mrigal with pabda (T2) and 50% replacement of mrigal with pabda (T3) were used. The overall fish stocking density was 7500 fingerlings per ha. The fish were fed with farm-made feed (21.8% CP) @ 2-4% of their body weight. Pabda attained highest growth and survival in T2 and the introduction of pabda did not affect the overall survival, growth and production of catla and rohu. It also did not affect the overall fish production in terms of quantity (p≥0.05) in all the treatments. The dietary overlapping indices between the co-habiting fishes were insignificant across the treatments except for pabda and mrigal in T3 (0.74). Thus, it is concluded that co-culture of pabda and IMCs is possible by replacing mrigal partially or fully to have a higher return in terms value from the carp-based culture system.
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Sarjito, Sarjito, A. Harjuno Condro Haditomo, Desrina Desrina, Restiana Ariyati, and S. Budi Prayitno. "The Diversity of Causative Agent Associated With Bacterial Diseases on Catfish (Clarias gariepinus) with Molecular Based from Demak, Indonesia." Omni-Akuatika 14, no. 2 (August 9, 2018). http://dx.doi.org/10.20884/1.oa.2018.14.2.553.
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Bacterial diseases is frequently occur in catfish culture. The aim of this research was to find out the diversity of causative agent associated with bacterial diseases in catfish based on 16S rDNA gene sequences. The combination between exploratory in the field and experiment, method were applied. Seventeen isolates (D01–D17) were gained from kidney and external wound of moribound catfish with NA and GSP medium that were collected from fish pond of Demak Regency, Indonesia. Based on the postulat results showed that four isolates (D07, D10, D11 and D14) that were caused 10–55% of fishes get sick and 0–30% fishes mortal. On the other hand, there were 13 isolates do not cause both sick and mortality of fish. On the basis of sequence 16S rDNA analysis, the result showed that D07, D10, D11 and D14 were closely related to Aeromonas caviae (96%), Aeromonas veronii (97%.), Plesiomonas shigelloides (97%) and Pseudomonas putida (96%) respectively. The sensitivity test result indicated that these causative agents have not sensitively to some fish drugs test.
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Ali, Md Rasal, and B. M. Newaz Sharif. "Fish Production Technology of Small Scale Fish Farmers at Chaugachha Upazila under Jashore District of Bangladesh." Global Journal of Science Frontier Research, May 11, 2020, 1–6. http://dx.doi.org/10.34257/gjsfrgvol20is1pg1.
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The study was conducted on the fish farmer, which was situated at Chaugachha Upazila, Jashore, from October 2015 to April 2016. Data were collected using participatory rural appraisal (PRA) tools and personal observation. About 62% of the farmers have ponds of single, and 38% have multiple ownership. The homestead and commercial ponds were 79% and 21%, respectively. About 100% farmer carried out poly-culture fish farming though they did not know poly-culture just culture of various fishes. About 98% of the farmers control aquatic weeds manually. For controlling undesirable species, most of them (95.74%) used the netting method. Liming used 185. 3-247 kg/ha and organic fertilizer, mainly cow dung used 741-1235 kg/ha. Average stocking density was found to be 12326 fry/ha. 91.5% of the farmers applied supplementary feed, such as both rice-bran and mustard oil-cake. The peak harvesting period was found from December to January. In this season, around 65% of the stocked fishes were reported to harvest, and the rest of the fish (35%) was harvested during another season.
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IKEJIMA, K., J. D. RONQUILLO, V. L. CORRE, JR, and V. A. DUREZA. "Fish Assemblages in Abandoned Ponds and Waterways Surrounding Brackish Water Aquaculture Ponds in Panay Island, the Philippines." Asian Fisheries Science 19, no. 3 (March 5, 2007). http://dx.doi.org/10.33997/j.afs.2006.19.3.009.
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Fish assemblage structure in abandoned ponds and waterways in Panay Island, Philippine, were investigated and compared with those in mangrove fringed habitats. Juvenile and small resident fishes were collected using a seine net set along the beach, creeks, waterways and abandoned culture ponds. Sampling stations were characterized by the absence or presence of mangrove vegetation. Fish diversity was higher on beaches and in creeks with mangroves and in creeks without mangrove compared with abandoned ponds and waterways. Gobiidae was the most diverse species group, being abundant in most stations. More species of juveniles occurred in mangrove habitats and river banks than in abandoned ponds and waterways. However, fish abundance and biomass were not clearly different between stations. The results suggest that fish diversity decreases in areas with culture pond constructions, but these still provide habitat for gobies and juveniles of a few other species.
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Upadhyay, Sunil Kumar, and J. Mishra. "Present status of fish farming and pond conditions from Basti and Gonda districts, Uttar Pradesh." FLORA AND FAUNA 26, no. 1 (June 1, 2020). http://dx.doi.org/10.33451/florafauna.v26i1pp141-147.
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Fish ponds operate as an open ecological system where natural and technological processes are built on one another and are implemented in a non-separable way. Pond fish farms contribute to preserve biodiversity. In both districts the composite fish culture technology is commonly followed for fish farming with six species combination i.e. Indian Major Carps (IMC) i.e. Catla, Rohu and Mrigal (Nain) and Exotic Major Carps (EMC) i.e. Silver carp, Grass carp and Common carp. There are 14 blocks in Basti district in which 3848 number of ponds are found. These ponds cover 1040.42 ha of water spread area. There are 16 blocks in Gonda district. The number of ponds is 4471 with water spread area of 3706.86 ha. The total productions of fishes are 1800 ton/year in Basti district while 3850 ton/year in Gonda district. The average productions are 2800 kg/ha/ year and 3000 kg/ha/year in Basti and Gonda districts, respectively. The data indicated that the Gonda district have more potential in fish production compared to Basti district. The maximum ponds were of less than 1 hectare in both districts. The respondents were 68% in Basti district and 76% in Gonda District. 82% and 70% respondents have leased pond in Basti and Gonda districts, respectively. Gonda district has more potential for fishing in future.
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Menaga, M., S. Felix, C. Mohanasundari, and M. Charulatha. "Characterisation of Pigment Producing Bacteria Isolated from Bio Floc Ponds and Its Colour Enhancement Effect in Xiphophorus helleri." Indian Journal of Animal Research, Of (June 26, 2021). http://dx.doi.org/10.18805/ijar.b-4384.
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Background: Biofloc technology is a minimal or zero water exchange technology which exerts beneficial effects on water quality, improves feed conversion ratio by recycling microbial protein in the culture of commercially important finfishes and shellfishes. This culture technique also improves the pigmentation in the ornamental fish culture. The presence of pigment producing bacteria and the absorption of the pigments by the ornamental fishes under biofloc technology would pave a long way to boost the production and export market of the high value fishes. Therefore, the present study evaluated the use of bacterial pigments isolated from the biofloc culture in the diets of Swordtail ornamental fish for its colouration and pigment absorption ability.Methods: A 30 days trial was conducted to evaluate the colour enhancement in swordtail through the supplementation of pigment produced from the bacteria in their diets. Swordtail fishes (1.2 ± 0.01g) were stocked in 100 litres tanks (20nos / tank) in triplicates. Fish fed with normal diet served as control and diet supplemented with pigment (50mg/kg) isolated from the bacteria Exiguobacterium profundum (T1), Chryseobacterium joostei (T2), Staphylococcus pasteuri (T3), Staphylococcus arlettae (T4) served as treatments. The characteristic features of the pigments isolated from the four different bacteria were checked and showed enhanced antibacterial, total antioxidant activity and the reductive ability.Result: Significant difference was observed in water quality parameters except temperature between the experimental groups. Growth parameters showed significant difference between control and treatment. Highest carotenoid concentration was found in fishes fed with pigments extracted from Staphylococcus pasteuri compared to other experimental groups. The present study proved the incorporation of bacterial pigments in the diets of Swordtail enhanced the total carotenoid concentration.
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Niyi-David, C. C., S. A. Wemedo, N. P. Akani, and S. I. Douglas. "Culture-Based Characterization of Bacteria Associated with Fish Pond Wastewater Undergoing Treatment Using Plants." Journal of Advances in Microbiology, May 18, 2021, 1–10. http://dx.doi.org/10.9734/jamb/2021/v21i530346.
Full textAbstract:
Fish pond wastewater management is one of the problems having the greatest impact on the environment. This untreated fish pond waste water contains organic materials, pathogenic microorganisms, nutrients and toxic compounds, which when discharged into the environment and it runs off into the water bodies in excess could cause algal bloom (eutrophication) of the receiving waters. Port Harcourt is a riverine area, many of the fish farmers discharge their wastewater direct into the water bodies or into drainages that flows into the water bodies and this act is harmful to humans and the environment as a whole.
The determination of the microbiological and physicochemical characteristics and remediation of fish wastewater using Eichhornia crassipes and Pistia stratiotes were investigated. The physicochemical and microbiological parameters of fish pond wastewater were monitored at intervals from 1-70days. Fish wastewater samples were collected from twelve fish ponds (6 plastic tanks and 6 concrete tanks) using standard procedures. Identification of bacteria was carried out using colonial morphological and biochemical characteristics of the isolates. A total of 194 bacterial isolates belonging to eleven genera were identified from the twelve fish ponds with 6 concrete tanks having total heterotrophic bacteria, coliform counts, Salmonella Shigella counts, feacal coliform count, Vibro count, and Pseudomonad count that ranged from 4.78 ± 0.5×104 to 5.74 ± 0.39×105, 4.06 ± 0.06 ×104, to 5.8 ± 0.43 ×105, 4.3 ± 0.24×104 to 4.99 ±0.42 ×104, 4.18 ± 0.39 ×104 to 5.08 ± 0.43 ×105 , 4.08±0.35 x 105 to 5.24±0.46 x 105 and 4.1 ± 0.3× 104 to 5.15 ± 0.44 ×104 cfu/ml, respectively and 6 plastic tanks having total heterotrophic bacteria, coliform counts, Salmonella Shigella counts, feacal coliform count, Vibro count, and pseudomonad count that ranged from 4.55 ± 0.46×104 to 5.74 ± 0.4×105, 4.43 ± 0.23 ×104, to 5.78 ± 0.36 ×105, 4.00 ± 0.5×104 to 5.00 ±0.47 ×105, 4.18 ± 0.39 ×104 to 5.17 ± 0.45 ×105 , 3.78±0.35x103 to 5.24 ± 0.46x105 and 3.81 ± 0.26× 103 to 5.15 ± 0.44 ×105 cfu/ml, respectively. The bacteria isolates were Staphylococcus, Micrococcus, Bacillus, Enterococcus, Proteus, Pseudomonas, E. coli, Salmonella, Klebsiella, Vibrio and Shigella sp. The presence of these organisms is an indication of lack of qualitative pond management which could become harmful to both fishes andhumans in the food web systems. Therefore, there is the need to protect our water sources for aquaculture purposes and sustainable development through the detection of aquatic infectious substances and possible control of these microbes.
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Jayasankar, P. "Present status of freshwater aquaculture in India - A review." Indian Journal of Fisheries 65, no. 4 (December 31, 2018). http://dx.doi.org/10.21077/ijf.2018.65.4.81300-20.
Full textAbstract:
Aquaculture is a rapidly growing fisheries sector in India with an annual growth rate of over 7%. Freshwater aquaculture contributes over 95% of the total annual aquaculture production of 5.77 million t. Technologies of induced carp breeding and polyculture of the three Indian major carps (Catla catla, Labeo rohita and Cirrhinus mrigala) as well as ‘composite carp culture’ with the addition of three exotic carps (Hypophthalmichthys molitrix, Ctenopharyngodon idella and Cyprinus carpio) in ponds and tanks brought about perceptible upward shift in freshwater aquaculture production. Of late, the sector has been witnessing diversification with the inclusion of medium and minor carps, catfishes and murrels. Andhra Pradesh and West Bengal are the top producers of freshwater fish through aquaculture. System diversification has resulted in optimum productivity of 3-6 t ha-1 yr-1. Public and private carp hatcheries produce around 40 billion fry. Fish requirement by 2020 is expected to touch 15 million t, of which around 9 million t would need to come from freshwater aquaculture. Input-related, social and environmental constraints of aquaculture in India need to be tackled through horizontal and vertical expansion, technology as well as climate change mitigation and adaptation, for sustainable development.
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Nasiruddin, Munira, Monika Rahman, and Rozina Akhter. "Toxic response of Heteropneustes fossilis (Bloch) to some indigenous plant seed extracts." Chittagong University Journal of Biological Sciences, January 18, 2013, 01–12. http://dx.doi.org/10.3329/cujbs.v4i1.13382.
Full textAbstract:
Toxic responses of distilled water, 50% ethyl and absolute ethyl alcohol extracts of six indigenous plants, Datura innoxia (Mill), Clerodendrum viscosum (Vent), Amoora rohituka (Roxb) Wt. et. Arnott, Acacia auriculaeformis A. Cunn. ex. Benth., Pongamia pinnata (L) Pierre and Acacia catechu Willd were studied on a predatory fish Heteropneustes fossilis (Bloch) in laboratory conditions. Amongst the extracts the toxicity range varied, absolute ethyl alcohol extract of A. rohituka seeds being the most toxic (LC50 = 8.67 ppm) whilst distilled water extract of D. innoxia seeds was the least toxic (LC50 = 1950.03 ppm). On the basis of LC50 and relative potency values the relative toxicity of the six plants was in the order- A. rohituka > C. viscosum > P. pinnata > A. auriculaeformis > A. catechu > D. innoxia seed extracts. These six indigenous plant seed extracts assayed might be helpful as controlling agent of undesirable fishes in fish culture ponds. DOI: http://dx.doi.org/10.3329/cujbs.v4i1.13382 The Chittagong Univ. J. B. Sci.,Vol. 4(1&2):1-12, 2009
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Nyadjeu, Paulin, Jeannette Angoun, Ngwasiri Pride Ndasi, and Minette Eyango Tabi-Tomedi. "Effect of Garcinia kola seeds supplemented diet on growth performance and gonadal development of Oreochromis niloticus juveniles breed in ponds." Fisheries and Aquatic Sciences 22, no. 1 (September 18, 2019). http://dx.doi.org/10.1186/s41240-019-0136-1.
Full textAbstract:
Abstract Background Despite the favorable geo-climatic potential of Cameroon, the national production of tilapia remains low due to poor tilapia growth reported by fish farmers. One of the underlying reasons is the early female maturation at a very small size and precocious breeding in earthen ponds, resulting in overpopulation which leads to stunted growth and therefore to the production of unmarketable fish size. Studies have shown that dietary supplementation of G. kola enhanced growth in young Clarias gariepinus and Oreochromis niloticus. It was also reported that G. kola inhibited spawning in Tilapia adult females. Therefore, this study sought to assess the effects of Garcinia kola as growth promoter and inhibitor of gonadal development in young Oreochromis niloticus. Methods A total of 108 juveniles weighing 13.32 ± 0.62 g were randomly distributed in 9 hapas of 12 fishes each (9 females and 3 males) and fed for 70 days with three isonitrogenous diets, 40% crude protein with increasing Garcinia kola supplementation levels of 0 (normal diet), 6% and 10% (experimental diets). Physico-chemical parameters of the water (temperature, dissolved oxygen, pH, nitrate, nitrite, ammonia, and transparency) were measured twice a week. Every 14 days, fish were harvested, counted, and weighed. At the end of the experiment, three fish of each sex per replicate were sacrificed and their gonad and liver collected and weighed. Data were statistically analyzed using one-way analysis of variance repeated measure followed by Newman-Keuls multiple tests. Results The results showed that all physico-chemical parameters of the water were within the recommended values for Tilapia culture. Tilapia fed 6% Garcinia kola supplemented diet displayed higher final body weight in males (38.60 ± 3.50 g) and females (36.77 ± 3.62 g) compared to those receiving normal diet (36.23 ± 1.36 g and 25.87 ± 3.32 g; respectively to the final body weight in males and females). The gonadosomatic index and hepatosomatic index indicated no significant variation in males while in females, these were significantly low in the experimental fish compared to control fish. Conclusion The results of this study demonstrated that supplementation of G. kola seeds in diets of young Tilapia improved growth performance and impaired gonadal development in females.