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1
Tirado-Ibarra, Jorge de Jesus, Stephanie Jimenez-Gutierrez, Cristina Acuña-Carvajal, Isabel Muñoz-Garcia, Francisco Martinez-Perez, Guillermo Rodriguez-Dominguez, Raul Perez-Gonzalez, and Laura R. Jimenez-Gutierrez. "Crustaceans from shrimp by-catch from the southeastern Gulf of California to the southeastern Mexican Pacific: implications in their community structure and reproduction." Crustaceana 93, no. 1 (February 6, 2020): 89–109. http://dx.doi.org/10.1163/15685403-00003961.
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Abstract In tropical countries, a large number of finfish species and invertebrates are captured as by-catch, including several species of crustaceans, due to the low selectivity of the fishing methods. By-catch presents and optimal opportunity to study populations of crustaceans. Here, the goal was to determine the community structure, specifically through the size structure, as well as the average sizes at first maturity of crustacean species present in the shrimp by-catch caught aboard a fishing vessel operating in the Mexican Pacific, from Sinaloa to Guerrero, Mexico. From the 18 crustaceans found in this study, the crabs Euphylax robustus and Achelous asper were the dominant species, whereas four species were considered casual (i.e., not frequent). Interestingly, more than 40% of the organisms analysed were in the juvenile stage, and 19% were ovigerous females. The results demonstrate the negative impact of the low selectivity of shrimp trawls on the communities of species of Crustacea.
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Dreyer, Niklas, and Benny K. K. Chan. "The diversity and biology of symbiotic and parasitic crustaceans: an introduction." Journal of Crustacean Biology 40, no. 6 (October 21, 2020): 761–64. http://dx.doi.org/10.1093/jcbiol/ruaa082.
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Abstract The present special number of Journal of Crustacean Biology (JCB) house, in addition to novel contributions, articles originating from two symposia, ‘Frontiers in the Ecology and Biology of the Thecostraca’ in ICC9, Washington DC, 2018, and ‘Evolution and Ecology of Parasitic and Symbiotic Crustaceans’ in The Crustacean Society summer meeting in Hong Kong, 2019. Articles on symbiotic and parasitic crustaceans, including tantulocarids, isopods, amphipods, barnacles, and pilumnid and pinnotherid crabs, are devoted to advancing our knowledge on the diversity and biology of symbiotic (including parasitic) crustaceans.
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Leiva, Natalia, Mario George-Nascimento, and Gabriela Muñoz. "Parasite burden in decapod crustaceans from the central coast of Chile: is there any association with the relationship with definitive host abundances?" Latin American Journal of Aquatic Research 43, no. 4 (February 28, 2017): 726–38. http://dx.doi.org/10.3856/vol43-issue4-fulltext-11.
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Crustaceans play an important role in parasite life cycles, serving as second intermediate hosts. However, there are scarce parasitological studies in crustaceans from the rocky intertidal habitats, in Chile and around de world. In this study we aimed to record the parasites in decapod crustaceans, compare their parasitic loads between localities and relate them with the abundance of the definitive hosts (fishes and birds). Between July and September 2013, 409 crustacean specimens, corresponding to 16 species, were collected from the rocky intertidal zone of two localities of central Chile (33°S), Las Cruces and Montemar. Of out the sample, 65.5% was parasitized; counting 2,410 metacercariae and 18 nematodes. One group of these metacercariae belonged to the family Opecoelidae; while others corresponded to the family Microphallidae. Nematodes belonged to the family Cystidicolidae. The highest prevalence and abundance of opecoelids were in P. violaceus (96.9%, 13.59 ± 17.50 parasites/crustacean), microphallids were mostly recorded in the crab Petrolisthes tuberculosus (42.3%, 11.08 ± 4.8 parasites/crustacean), while cystidicolids were less prevalent and abundant than digenean at both localities. Parasite loads was affected by body size, locality and species of crustacean hosts. No association was found between parasite loads in these intermediate hosts and the abundance of definitive hosts. The low relationships between parasite loads and host abundances may be due to several reasons, such as a wide trophic spectrum and great capacity of movement, which would not contribute to the parasite transmission and the direct relationship with the definitive host abundances.
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Quackenbush, L. Scott. "Crustacean Endocrinology, A Review." Canadian Journal of Fisheries and Aquatic Sciences 43, no. 11 (November 1, 1986): 2271–82. http://dx.doi.org/10.1139/f86-278.
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Crustacean endocrinology has benefited from the recent advances in peptide chemistry and immunoassay. Current research has focused on the isolation of peptides and the measurement of steroids. Terpenoid hormones, long known from insects, are now believed to be present and active in crustaceans. The role of biogenic amines as neuromodulators and neurohormones in crustaceans is also being examined. Details of crustacean regulatory physiology suggest a similarity to well-known insect patterns. This brief review will examine some examples from each of these areas.
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STENTIFORD, G. D., A. RAMILO, E. ABOLLO, R. KERR, K. S. BATEMAN, S. W. FEIST, D. BASS, and A. VILLALBA. "Hyperspora aquatica n.gn., n.sp. (Microsporidia), hyperparasitic in Marteilia cochillia (Paramyxida), is closely related to crustacean-infecting microspordian taxa." Parasitology 144, no. 2 (October 17, 2016): 186–99. http://dx.doi.org/10.1017/s0031182016001633.
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SUMMARYThe Paramyxida, closely related to haplosporidians, paradinids, and mikrocytids, is an obscure order of parasitic protists within the class Ascetosporea. All characterized ascetosporeans are parasites of invertebrate hosts, including molluscs, crustaceans and polychaetes. Representatives of the genus Marteilia are the best studied paramyxids, largely due to their impact on cultured oyster stocks, and their listing in international legislative frameworks. Although several examples of microsporidian hyperparasitism of paramyxids have been reported, phylogenetic data for these taxa are lacking. Recently, a microsporidian parasite was described infecting the paramyxid Marteilia cochillia, a serious pathogen of European cockles. In the current study, we investigated the phylogeny of the microsporidian hyperparasite infecting M. cochillia in cockles and, a further hyperparasite, Unikaryon legeri infecting the digenean Meiogymnophallus minutus, also in cockles. We show that rather than representing basally branching taxa in the increasingly replete Cryptomycota/Rozellomycota outgroup (containing taxa such as Mitosporidium and Paramicrosoridium), these hyperparasites instead group with other known microsporidian parasites infecting aquatic crustaceans. In doing so, we erect a new genus and species (Hyperspora aquatica n. gn., n.sp.) to contain the hyperparasite of M. cochillia and clarify the phylogenetic position of U. legeri. We propose that in both cases, hyperparasitism may provide a strategy for the vectoring of microsporidians between hosts of different trophic status (e.g. molluscs to crustaceans) within aquatic systems. In particular, we propose that the paramyxid hyperparasite H. aquatica may eventually be detected as a parasite of marine crustaceans. The potential route of transmission of the microsporidian between the paramyxid (in its host cockle) to crustaceans, and, the ‘hitch-hiking’ strategy employed by H. aquatica is discussed.
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Vesnina, L. V. "THE STATUS OF THE POPULATION OF ARTEMIA IN THE DEPRESSIVE PERIOD IN THE LAKE OF THE GREAT ALERT EDGE OF THE ALTAI." Innovations and Food Safety, no. 2 (July 2, 2020): 102–11. http://dx.doi.org/10.31677/2311-0651-2019-24-2-102-111.
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Research on hypergalin lakes began in 1977. Commercial interest in Artemia (at the cysts stage) as a starter feed for aquatic organisms served as the basis for monitoring studies of hypergalin lakes in the Altai Territory. Lake Bolshaya Yarovoye is noted as one of the largest bodies of water in the region with a population of toad crustacean Artemia Leach, 1819. Considering the depressed state of development of the Artemia population in the lake Great Spring in the growing season of 2017 (the reservoir productivity was 5.8 kg / ha), monitoring studies were conducted to clarify the status of the productivity of aquatic bioresources. As a result of complex hydrobiological surveys in the spring period (April – May), 2018, the dynamics of indicators of the number of early stages of development of the first generation Artemia crustaceans and cysts in the lake are presented. Big Spring Altai Territory. The analysis of the influence of the temperature and salinity of the water in the spring of 2018 on the condition of Artemia crustaceans and the reservoir productivity was carried out. In the course of monitoring studies of the hypergalin reservoir in April and May 2018, during the development of the first generation of crustaceans, a depressive state of development of the Artemia crustacean population was revealed. The temperature at the beginning of the growing season of the current year was unfavorable for the development of Artemia in the lake, which resulted in low numbers of crustaceans. Given the depressed state of the development of the Artemia population in the lake. In the growing season of 2017, the Great Spring, the extraction of bioresources (Artemia (at the cysts stage)) at the current state of the population can significantly undermine the fishing base of the reservoir and damage the further development of Artemia.
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Emerson, Michael J., and Frederick R. Schram. "A Novel Hypothesis for the Origin of Biramous Appendages in Crustaceans." Short Courses in Paleontology 3 (1990): 157–76. http://dx.doi.org/10.1017/s2475263000001781.
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Phylogenetic Uncertainty.— Invertebrate zoologists have long debated the relationships of biramous-limbed Crustacea to other groups of arthropods. Haeckel (1866) recognized two groups of arthropods on the basis of respiratory anatomy. The Carides included the crustaceans, trilobites, xiphosures, and eurypterids; and the Tracheata, included the arachnids, insects, and myriapods. Work on the onychophorans (Mosely, 1874) indicated a link between annelids and the terrestrial myriapod-insect line, but this left the origins of the aquatic carides unresolved. Lankester (1881) demonstrated that the xiphosures were allied to the arachnids rather than to the crustaceans. These and other studies led Haeckel (1896) to revise his position and propose two separate lines of arthropods: one of primarily aquatic groups with primitively biramous appendages (crustaceans, trilobites, and chelicerates); and the other of primarily terrestrial groups with uniramous limbs (onychophorans, myriapods, and insects). Haeckel's new arrangement emphasized the convergent origins of trachea in the arachnids and uniramians. Korschelt and Heider (1890) preferred a monophyletic scheme with the two evolutionary lines united by a pre-onychophoran, “protostracan,” ancestor. By modern standards, however, this might indicate that the arthropods are a morphological grade, rather than a true clade.
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Castejón-Silvo, Inés, Damià Jaume, and Jorge Terrados. "Feeding preferences of amphipod crustaceans Ampithoe ramondi and Gammarella fucicola for Posidonia oceanica seeds and leaves." Scientia Marina 83, no. 4 (December 3, 2019): 349. http://dx.doi.org/10.3989/scimar.04892.06b.
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The functional importance of herbivory in seagrass beds is highly variable among systems. In Mediterranean seagrass meadows, macroherbivores, such as the fish Sarpa salpa and the sea urchin Paracentrotus lividus, have received most research attention, so published evidence highlights their importance in seagrass consumption. The role of small crustaceans in seagrass consumption remains less studied in the region. Herbivory on Posidonia oceanica seeds has not previously been reported. In turn, crustacean herbivory on P. oceanica leaves is broadly recognized, although the species feeding on the seagrass are mostly unknown (except for Idotea baltica). This work evaluates P. oceanica consumption by two species of amphipod crustaceans commonly found in seagrass meadows. Ampithoe ramondi and Gammarella fucicola actively feed on P. oceanica leaves and seeds. Both species preferred seeds to leaves only when the seed coat was damaged. This study provides the first direct evidence of consumption of P. oceanica seeds by the two named amphipod crustaceans, and confirms that they also consume leaves of this seagrass species.
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Becking, Thomas, Carine Delaunay, Richard Cordaux, Jean-Marc Berjeaud, Christine Braquart-Varnier, and Julien Verdon. "Shedding Light on the Antimicrobial Peptide Arsenal of Terrestrial Isopods: Focus on Armadillidins, a New Crustacean AMP Family." Genes 11, no. 1 (January 14, 2020): 93. http://dx.doi.org/10.3390/genes11010093.
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In crustaceans, antimicrobial peptides (AMPs) are clustered into four major groups according to their amino acid composition and structure: (1) single-domain peptides containing cysteine residues such as anti-lipopolysaccharide-factor (ALF), (2) multi-domain or chimeric AMPs such as crustins, (3) non-conventional AMPs, and (4) linear single-domain AMPs. The majority of AMPs has been described in commercially exploited crustaceans, particularly decapods living in aquatic environments (crab, shrimp, lobster, and crayfish). Here, we aimed at establishing the AMPs repertoire of terrestrial isopods (Oniscidea), an original suborder of crustaceans adapted to life outside of the aquatic environment. Using transcriptomic data from 21 species, we identified 110 ALF and 73 crustin sequences. We also characterized the full-length sequence of armadillidins from 17 species, similar to the AMP previously described in the terrestrial isopod Armadillidium vulgare. Furthermore, we tested the antimicrobial activity of three armadillidin peptides characterized from three distantly related species. This analysis revealed similar activity spectra against pathogens, despite extensive structural variation among the tested peptides. In addition to conventional crustacean AMPs, our work highlights armadillidins as a new and independent family of AMPs specific to the Oniscidea, thus opening new perspectives concerning the study of the immune system of terrestrial isopods.
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Sikorski, Łukasz. "Effects of Sodium Chloride on Algae and Crustaceans—The Neighbouring Links of the Water Trophic Chain." Water 13, no. 18 (September 10, 2021): 2493. http://dx.doi.org/10.3390/w13182493.
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Salinity limits the habitable living environment for aquatic organisms. Algae and crustaceans are widely used as bioindicators in freshwater environmental risk assessments. This study aimed to use biotests (Algaltoxkit and Daphtoxkit) to determine the effect of sodium chloride (NaCl) on algae Pseudokirchneriella subcapitata and crustaceans Daphnia magna. Standard biotests were extended to include NaCl effects on algal chlorophyll fluorescence and crustaceans swimming and heart rate. It was found that after 7 days, a 0.24 M of NaCl reduced the growth rate of the algae by 50% (EC50). A NaCl of 0.27 M inhibited the minimum (Fo), maximum (Fm) and variable (Fv) fluorescence by 50%, on average. The crustaceans also responded to NaCl. Those exposed to 0.19 M NaCl during 15 min swam slower by 50% and a 0.27 M immobilised three organisms (EC50). The crustacean immobilisation was less modified by NaCl than swimming. To determine the lethal effect in non-swimming organisms, the heart rate was examined. At 0.35 M of NaCl, all organisms were dead after 30 min, as their hearts did not beat. These studies suggest that physiological and behavioural features are sensitive indicators of the toxic effects of NaCl in algae and crustaceans, before morphological changes are observed.
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Nucci, P. R., A. Turra, and E. H. Morgado. "Diversity and distribution of crustaceans from 13 sheltered sandy beaches along São Sebastião Channel, south-eastern Brazil." Journal of the Marine Biological Association of the United Kingdom 81, no. 3 (June 2001): 475–84. http://dx.doi.org/10.1017/s0025315401004118.
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The crustacean species composition in the intertidal zones of 13 sheltered unconsolidated marine beaches in south-eastern Brazil is described. Fifty-three crustacean species were collected, adding 46 species to the total reported by previous studies in the same region. Decapods dominated the community, in contrast to exposed sandy beaches where peracarids normally predominate. The species were distributed irregularly among the beaches. Richness varied markedly among sites, and was positively related to a combination of factors such as fine sand grains, high organic matter content, and relatively low silt–clay content. The presence of rock fragments enabled both rocky shore and sandy beach crustaceans to occur on the same beaches. Richness and abundance of crustaceans showed no clear relationship to sediment grain size and slope, in contrast to the norm for exposed sandy beaches. The dominance of the tanaid Kalliapseudes schubarti in some areas may be a result of organic matter pollution in the region. These beaches showed higher species richness than typical sheltered and exposed sandy beaches, indicating that this sheltered, highly heterogeneous seascape is an important area for conservation.
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Maciaszek, Rafał, Aleksandra Jabłońska, Sebastian Prati, and Wiesław Świderek. "First report of freshwater atyid shrimp, Caridina formosae (Decapoda: Caridea) as a host of ectosymbiotic branchiobdellidan, Holtodrilus truncatus (Annelida, Citellata)." Knowledge & Management of Aquatic Ecosystems, no. 421 (2020): 33. http://dx.doi.org/10.1051/kmae/2020027.
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In recent years, ornamental shrimps gained increasing popularity in the aquarium trade. Unfortunately, they are potential vectors of epibionts, which may be unintentionally introduced to aquaria with imported shrimps. This contribution presents the first report of the occurrence of Holtodrilus truncatus on aquarium freshwater shrimp Caridina formosae. A total of 120 shrimp imported from Taiwan as aquarium pets were examined for the presence of epibionts. Holtodrilus truncatus occurred in 23.3% of shrimps. A total of 29.6% of crustaceans showed signs of damages as a result of H. truncatus activity. The shrimp is not common in the ornamental trade and is not subject to selective breeding. Therefore C. formosae populations available on the market, if not wild-caught, are most likely very similar to those occurring in Taiwanese natural water bodies, where H. truncatus occurs in Neocaridina shrimp. Neocaridina spp. are a known host for this epibiont, and transmission between species might occur in nature as well as in the aquarium trade were densities of animals are often high. The ability of H. truncatus to infect also highly invasive crayfish Procambarus clarkii, might also pose concern for regions where this crustacean is widespread. The actual lack of preventive measures for shrimp epibionts as well as confirmed releases of ornamental crustaceans into new aquatic ecosystems may result in further spread of H. truncatus, a potential new threat to native crustaceans and other epibionts.
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Lin, Wang, Huimin Luo, Jingyi Wu, Tien-Chieh Hung, Beibei Cao, Xiangli Liu, Jifeng Yang, and Pinhong Yang. "A Review of the Emerging Risks of Acute Ammonia Nitrogen Toxicity to Aquatic Decapod Crustaceans." Water 15, no. 1 (December 21, 2022): 27. http://dx.doi.org/10.3390/w15010027.
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Waterborne ammonia is becoming one of the most notorious pollutants in aquatic habitats and has been shown to induce a range of ecotoxicological effects on aquatic animals. High ammonia concentrations occur mainly in intensive aquaculture systems, and effective wastewater treatment and agricultural systems are necessary to treat excessive nitrogenous compounds. Ammonia can enter aquatic decapod crustaceans through their gills, thereby reducing the oxygen-carrying capacity of blood cells and damaging the structures of organs such as the gills and hepatopancreas. This ultimately results in oxidative stress, immunotoxicity, and high mortality. Crustaceans have the ability to exert detoxification functions against ammonia stress by regulating the permeation of ammonia and related nitrogenous compounds through membranes. To the best of our knowledge, a comprehensive review of the acute toxicity of ammonia to crustaceans is lacking. The present review focuses on the literature on the problems and mechanisms concerning ammonia-induced acute toxicity and aims to synthesize the knowledge of the relationship between ammonia stress and defense responses in crustaceans (mainly shrimp and crabs). This review also emphasizes the uptake, elimination, and detoxification of ammonia in crustaceans.
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Mercado-Salas, Nancy F., Sahar Khodami, and Pedro Martínez Arbizu. "Copepods and ostracods associated with bromeliads in the Yucatán Peninsula, Mexico." PLOS ONE 16, no. 3 (March 18, 2021): e0248863. http://dx.doi.org/10.1371/journal.pone.0248863.
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A substantial fraction of the freshwater available in the Neotropical forests is enclosed within the rosettes of bromeliads that form small aquatic islands within a terrestrial landscape. These aquatic oases provide shelter, water, nutrients and resting of aggregation sites for several aquatic organisms, among them crustaceans. However, in comparison with the multitude of studies on open aquatic systems, our knowledge on crustaceans inhabiting semi-terrestrial habitats and phytotelmata is limited and their presence in such environments is poorly understood. The present study was carried out in two natural protected areas of the Yucatán Peninsula aiming to understand the diversity and dispersal strategies of crustaceans living in bromeliads. Sediment and water contained in four species of bromeliads have been collected in order to understand the diversity and dispersal strategies of crustaceans living in such habitats. From a total of 238 bromeliads surveyed, 55% were colonized by crustaceans. Sixteen copepod, three ostracod and one branchiopod species were recorded during this study, however only seven species are considered as true bromeliad inhabitants. Different degrees of association between crustaceans and bromeliad species were assessed with an indicator species analysis, where significant associations were found for all crustaceans. We found significant differences between bromeliad species and reserves and their associated fauna. In order to analyze the genetic diversity of this fauna, we sequenced several individuals of each species with two genetic markers (18S rRNA and COI mtDNA). Bayesian analyses and the Generalized Mixed Yule Coalescent method (GMYC), delimited 7 well supported species. A comparison of the dispersal strategies used by different species, including passive dispersal, phoretic behavior and active dispersal, is included. This study stresses the need of studying meiofauna of phytotelms, which could be used as an indicator of local diversity in Neotropical forests.
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Holmes, J. M. C., and J. P. O'Connor. "A portable light-trap for collecting marine crustaceans." Journal of the Marine Biological Association of the United Kingdom 68, no. 2 (May 1988): 235–38. http://dx.doi.org/10.1017/s0025315400052140.
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A portable light-trap was designed and constructed to assist in Museum taxonomic studies on Crustacea. The trap was constructed throughout of transparent Perspex. The light-source was a chemoluminescent ampoule marketed under the name Cyalume® Lightstick. The present trap offers several advantages. It is inexpensive to construct, sturdy, readily portable, easy to operate, and safe to use. Field trials in Lough Hyne (Ine), Co. Cork, south west Ireland, have proved the apparatus to be most successful in attracting a wide variety of crustaceans.
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Cartes, Joan E., Pere Abelló, Domènec Lloris, Aina Carbonell, Pedro Torres, Francesc Maynou, and Luis Gil de Sola. "Feeding guilds of western Mediterranean demersal fish and crustaceans: an analysis based in a spring survey." Scientia Marina 66, S2 (June 30, 2002): 209. http://dx.doi.org/10.3989/scimar.2002.66s2209.
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The MEDITS-99 sampling was performed along all the Iberian Peninsula coasts of the western Mediterranean (from the Alborán Sea to Cape Creus) in a space-scale of 1000 Km N-S, at depths ranging between 27-790 m. Fish and decapod crustaceans were dominant in the megafaunal compartment sampled by trawling. Based on both the fish and the decapod crustacean compositions, a comparison of trophic guilds has been attempted, with fish and decapods classified as: 1) migrator macroplankton feeders (mM), 2) non-migrator macroplankton feeders (nmM), 3) nektobenthos-suprabenthos feeders (NS), 4) epibenthos feeders (Epib), 5) large detritus-scavengers (Sca), 6) infaunal feeders (Inf), 7) deposit feeders (Dep) and 8) small detritivorous feeders (Det). Multivariate techniques showed the following differences in the trophodynamics of the megafaunal assemblages along the coasts of the Iberian Peninsula: 1) crustaceans (mainly decapods) have different trophic structures on the shelf and on the slope; 2) on the slope, fish exhibited more clear changes as a function of the geographical gradient than crustaceans; and 3) trophodynamics of bathyal fish showed some geographic variations between the Alborán Sea, the Catalano-Balearic Basin, and the Algerian Basin (Vera Gulf and Alicante sectors), with a progressive north-south increase in planktophagous species.
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Grijalba-Bendeck, Marcela, Jorge Paramo, and Matthias Wolff. "Catch composition of deep-sea resources of commercial importance in the Colombian Caribbean." Revista de Biología Marina y Oceanografía 54, no. 2 (September 13, 2019): 194. http://dx.doi.org/10.22370/rbmo.2019.54.2.1891.
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Recent studies in the Colombian Caribbean Sea describe the potential for a new deep-sea crustacean fishery between 200 a 550-m depth. In order to support appropriate management plans for their sustainable utilization, the goal of the present study was to identify the catch composition and to detect general trends in the bathymetric distribution of the main four biological categories (crustaceans, teleostean, chondrichthyes and molluscs), in relation to depth strata. A total catch per unit area of 8,759 ind. km-2 and 226 kg km-2 was reported and the major contribution was supported by teleostean fish (89 species; 62% abundance and 73% of total biomass), dominating the depth stratum 200-300 m, followed by crustaceans (36% and 22%, respectively) for deeper waters (> 500 m). Most important species were the fish Coelorinchus caelorhincus (20.2 ind. km-2; 16.7 kg km-2) and the crustaceans Penaeopsis serrata (579 ind. km-2, 7% of the total abundance) and Pleoticus robustus (12.6 kg km-2, 6% of the total biomass). The information obtained is part of a base line required to describing the potential effects of deep-sea fisheries on the ecosystem and supporting future decisions about use, management and conservation of deep resources for this region.
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HU, QIONGXIA, and LANMING CHEN. "Virulence and Antibiotic and Heavy Metal Resistance of Vibrio parahaemolyticus Isolated from Crustaceans and Shellfish in Shanghai, China." Journal of Food Protection 79, no. 8 (August 1, 2016): 1371–77. http://dx.doi.org/10.4315/0362-028x.jfp-16-031.
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ABSTRACT Vibrio parahaemolyticus can cause serious human seafoodborne gastroenteritis and even death. In this study, we isolated and characterized 208 V. parahaemolyticus strains from 10 species of commonly consumed crustaceans and shellfish available in fish markets in Shanghai, People's Republic of China, in 2014. Most of these aquatic species had not been detected previously. The results revealed an extremely low occurrence of pathogenic V. parahaemolyticus carrying the toxin gene trh (1.9%). However, a high level of resistance to the antibiotics ampicillin (94.2%), rifampin (93.3%), and streptomycin (77.9%) was found. Approximately 74.5% of the isolates had multidrug-resistant phenotypes. Tolerance to the heavy metals Cu2+, Pb2+, and Cd2+ was detected in the majority of antibiotic resistant isolates. The resistance patterns differed depending on the tested samples. The crustaceans Penaeus monodon and Marsupenaeus japonicus harbored more antibiotic-resistant bacteria, whereas the isolates from the crustacean Litopenaeus vannamei and the shellfish Busycon canaliculatus had high tolerance to eight heavy metals tested. In contrast to the wide distribution of multidrug resistance and tolerance to heavy metals, lower percentages of plasmid DNA (22.6%) and SXT/R391-like integrative and conjugative elements (4.8%) were detected in the isolates, suggesting that V. parahaemolyticus in these aquatic species may have adopted some other molecular mechanisms that mediated the high prevalence of resistance determinants. The results of this study support the need for food safety risk assessment of aquatic products.
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De los Ríos, Patricio, Jaime Pizarro-Araya, Fermín M. Alfaro, and Carlos Zuleta. "First descriptions of aquatic crustaceans in coastal plains in northern Chile (Huentelauquen, 31°S, Coquimbo Region, Chile)." Crustaceana 92, no. 1 (2019): 73–81. http://dx.doi.org/10.1163/15685403-00003825.
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Abstract The crustacean communities in Chilean seasonal pools have been poorly studied, and much of the existing literature is restricted to southern Patagonian plains, whereas there are no studies available about other sites. The aim of the present study is to describe the aquatic crustaceans in shallow pools in Huentelauquén (31°S, central northern Chile). The species reported upon include Daphnia ambigua, Simocephalus serrulatus, Boeckella gracilipes, Ostracoda, and two unidentified clam shrimps (genera Lynceus and Leptestheria), which latter ones represent the first record of these taxa for Chile. The ecological results revealed low species numbers and non-structured patterns in the various species associations. The exposed results are markedly different from observations on other Chilean seasonal pools, where no clam shrimps can be found, and where primarily cladocerans, copepods, and amphipods occur in the crustacean communities.
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Perez-Calderon, J. A. "Occurrence of nematode parasites in Calocaris macandreae (Crustacea: Decapoda) from an Irish Sea population." Journal of the Marine Biological Association of the United Kingdom 66, no. 2 (May 1986): 293–301. http://dx.doi.org/10.1017/s0025315400042934.
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INTRODUCTIONA number of nematodes are known to develop in decapod crustaceans. These parasite nematodes are present in the coelom of the host either free or surrounded by different types of host cells. All belong to the order Ascaridida or Spirurida and most of them develop only to the third larval stage in the decapod host; further development takes place in a predator of the crustacean which is generally a teleost or elasmobranch (Berland, 1961; Ouspenskaia, 1960; Petter, 1970; Poinar & Kuris, 1975;Uspenskaja, 1953; Yamaguti, 1961). The life-cycle in most cases is not fully understood. Ouspenskaia (1960) and Uspenskaja (1953, 1963) deduced the life-cycle for Ascarophis morrhuae van Beneden and A. filiformis Poljanski in the Barents Sea by relating the larvae found in decapod crustaceans through affinity of characters to the adults present in cod (Gadus morhua L.) and haddock (Melanogrammus aeglefinus L.). Similarly, the life-cycle of the spirurid Proleptus obtusus was described by Lloyd (1928); the larvae occur in a decapod crustacean, usually the hermit crab Pagurus bernhardus L. and in some cases the shore crab Carcinus maenas L. and the adults are found in the lesser spotted dogfish (Scyliorhinus canicula L.). A more complex life-cycle has been proposed for some anisakids such as Anisakis, Contracaecum and Hysterothylacium (Berland, 1961; Norris & Overstreet, 1976; Wootten, 1978) in which more than one intermediate host is required.
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Wheatly, Michele G. "Crustacean Models for Studying Calcium Transport: The Journey from Whole Organisms to Molecular Mechanisms." Journal of the Marine Biological Association of the United Kingdom 77, no. 1 (February 1997): 107–25. http://dx.doi.org/10.1017/s0025315400033816.
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The crustacean moult cycle is a convenient model system in which to study calcium (Ca) homeostasis as vectorial movement across Ca transporting epithelia (gills, gastric epithelium, cuticular hypodermis, antennal gland) which occurs in either direction at different stages of the moulting cycle. Intermoult crustaceans are in relative Ca balance. During premoult, at the same time as the cuticle decalcifies, epithelia involved in Ca storage (e.g. gastric) calcify and/or increase their intracellular Ca stores. Premoult Ca balance is typically negative as Ca is excreted. During postmoult the soft new cuticle is remineralized largely with external Ca taken up across the gills and gastric epithelium (positive Ca balance); conversely during this time internally stored Ca is remobilized. This review (1) compares the relative roles of Ca transporting epithelia in Ca balance for crustaceans from different habitats; (2) proposes up-to-date cellular models for both apical to basolateral and basolateral to apical Ca transport in both noncalcifying and calcifying epithelia; (3) compares kinetics of the Ca pump and exchanger during intermoult; (4) presents new data on specific activity of calcium adenosinetriphosphatase (Ca2+ATPase) during the moult cycle of crayfish and (5) characterizes a partial cDNA sequence for the crayfish sarcoplasmic reticular Ca2+ATPase and documents its expression in gill, kidney and muscle of intermoult crayfish. The physiological and molecular characterization of Ca transporters in crustaceans will provide insight into the function, regulation and molecular evolution of mechanisms common to all eukaryotic cells.
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Napolitano, Gaetana, Gianluca Fasciolo, Claudio Agnisola, and Paola Venditti. "Urea Excretion and Arginase Activity as New Biomarkers for Nitrite Stress in Freshwater Aquatic Animals." Water 13, no. 24 (December 9, 2021): 3521. http://dx.doi.org/10.3390/w13243521.
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Background: In recent years, the concern has been growing on increasing aquatic nitrite levels due to anthropogenic activities. Crustaceans and fish easily uptake nitrite via the chloride uptake system of gills. High nitrite body levels may interfere with nitric oxide (NO) production by nitric oxide synthase (NOS). The arginase, which catalyzes arginine conversion to ornithine and urea, is central to NO homeostasis. In vivo, changes in the arginase activity alter urea body levels and urea excretion and modulate NOS by altering arginine availability for NO synthesis. Excess arginase activity may uncouple NOS and induce oxidative stress. Methods: We tested muscle arginase activity and urea excretion in two fish species, zebrafish and convict cichlid, and the crustacean Yamato shrimp, under sub-lethal nitrite stress. Results: Exposure to nitrite (2 mM in the fish, 1 mM in the shrimp) significantly increased blood nitrite concentration in all species. Concomitantly, nitrite stress significantly increased arginase activity, urea excretion, and urea levels in the blood. In Yamato shrimp, urea levels also increased in muscle. Conclusion: Our results agree with the hypothesis that nitrite stress affects NO homeostasis by arginase stimulation and urea excretion. These parameters might function as markers of sub-lethal nitrite stress in freshwater fish and crustaceans.
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Stoica, Catalina, Laurentiu Dinu, Irina Lucaciu, Mihai Nita-Lazar, and Voicu Oncu. "The Toxic Effect of Conventional Treated Mine Water on Aquatic Organisms." Revista de Chimie 71, no. 1 (February 7, 2020): 67–71. http://dx.doi.org/10.37358/rc.20.1.7813.
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The present paper aims to evaluate the toxic effects generated by conventional treated mine water as well as freshwater samples (Macris river) on primary producers (green algae, Selenastrum capricornutum) and primary consumers (planktonic crustaceans, Daphnia magna). Those organisms could be very realiable biological models to assess the toxic effect of mine waters on the environment. The green algae growth inhibition test (performed according to OECD201) and the acute immobilization test of freshwater crustaceans (Daphnia magna) (performed according to OECD 202) showed no growth inhibition or Daphnia magna immobilization / mortality during 72h and 48h incubation in presence of surface water samples from Macris river. The aqueous system with 1.89 g/L sulphate ion (SO42-) concentration, containing treated mine water mixed with freshwater sample (ratio 2.4:1), generated 100% toxic effect on crustaceans (Daphnia magna) after 48h incubation.
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von Vaupel Klein, Carel, and Richard Hartnoll. "Reproductive biology of crustaceans. Case studies of decapod crustaceans." Crustaceana 82, no. 4 (2009): 509–10. http://dx.doi.org/10.1163/156854008x400559.
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Kristanti, Risky Ayu, Wei Lin Wong, Yeti Darmayati, Ariani Hatmanti, Nilam Fadmaulidha Wulandari, Mada Triandala Sibero, Nur Fitriah Afianti, Erika Hernandes, and Flavio Lopez-Martinez. "Characteristics of Microplastic in Commercial Aquatic Organisms." Tropical Aquatic and Soil Pollution 2, no. 2 (December 14, 2022): 134–58. http://dx.doi.org/10.53623/tasp.v2i2.134.
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This study aims to review the occurrence of microplastics in some commercial aquatic organisms. Microplastics are small plastic particles with a diameter of less than 5 mm. Effluent, stormwater, agricultural, and surface runoff introduce microplastic to freshwater basins. Hydrodynamics and hydrology encompass microplastics. River flow speed can cause turbulence and riverbed instability, increasing microplastic concentrations. Fish, shellfish, and crustaceans ingest microplastics in proportion to their quantity in freshwater and marine environments. Human activities cause variations in the form, color, and size of microplastics in the biota. Animals absorb microplastics through trophic transfer. Increased microplastic residence time before ingestion promotes trophic transmission. Lower food concentration and aggregation enhance microplastic retention in zooplankton guts, increasing transmission to higher-trophic-level species. Most studies show that microplastics in biota are discovered in fish and crustacean intestines and bivalve tissues. Microplastic buildup can disrupt live organisms' growth and reproduction, induce oxidative stress, obstruct the digestive system, and damage the intestine. Microplastics may harm people's health if they eat contaminated seafood that contains them, but more research is needed.
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May-Tec, Ana Luisa, and Edgar Fernando Mendoza-Franco. "Temporal variability of crustacean parasites of fish and its importance for coastal resource management to anthropogenic climate change." JAINA Costas y Mares ante el Cambio Climático 4, no. 1 (August 30, 2022): 63–78. http://dx.doi.org/10.26359/52462.0522.
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This paper reviews the information available over the last 20 years on studies of the temporal variability of parasitic infections caused by parasitic crustaceans of fish in the Mexican territory. The possible responses of these parasitic infections to changes in the aquatic ecosystems caused by anthropogenic climate change are described. By studying the intensity of infection of Argulus yucatanus (a case study of parasite crustaceans of fish), the response of infections to changes in water temperature can be detected. Into this context and based on previous investigations reviewed, it is highlighted the importance of monitoring for long-time the behavior of these parasites. Also, it is indicated that parasitic crustaceans represent a good study model as bioindicators of environmental changes because they are in direct contact or exposed to hazardous substances of the environment. Extensive and precise data on parasitic biodiversity along with their ecological and experimental information are necessary to understand the possible responses of the parasitic infections caused by crustaceans in the face of climate change. Based on this kind of information it would be possible to deal with issues on control strategies and prevention of parasitic infections caused by crustaceans in aquaculture as well as for the sustainable development of aquatic ecosystems. Keywords: Long-term monitoring, sentinel species, parasitic infections, parasitic crustaceans, climate change.
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Olatunde, Oladipupo Odunayo, Soottawat Benjakul, and Ahmet Faruk Yesilsu. "Antimicrobial Compounds from Crustaceans and Their Applications for Extending Shelf-Life of Marine-Based Foods." Turkish Journal of Fisheries and Aquatic Sciences 20, no. 8 (2020): 629–46. http://dx.doi.org/10.4194/1303-2712-v20_8_06.
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Antimicrobial-resistant microorganisms have become a major challenge for public health and food industries because of their fast adaptability and slow response to synthetic antimicrobials. Bioactive compounds from marine sources exert various biological roles including antioxidant, antimicrobial, anti-inflammatory, antihypertensive, and anticancer properties. Their advantage as an antimicrobial compound is gradually be exploited, particularly in marine-based foods (MBFs), which are highly perishable since they are abundant in proteins, lipids, and other nutrients. Also, the growing demand for fresh products with prolonged shelf-life is making the MBFs industry to urgently seek the effective methods for preservation of fresh or refrigerated MBFs. Crustaceans, which are invertebrates, are valuable source of essential nutrient based on their richness in protein, carbohydrate, minerals, lipids, and vitamins. Additionally, the by-product from the processing of crustaceans could be used as an alternative source of antimicrobials, which can be employed in MBFs as natural preservatives. This review therefore revisited the recovery of antimicrobials compounds such as antimicrobial peptides, carotenoids, and chitosan derivatives from crustaceans. The uses of these crustacean antimicrobials in extending the shelf-life of MBFs are also discussed.
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Newman, William A. "Acrothoracica, Burrowing Crustaceans." Journal of Crustacean Biology 31, no. 1 (February 1, 2011): 209–11. http://dx.doi.org/10.1651/10-3319.1.
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Canales, T. Mariella, Rodrigo Wiff, Juan Carlos Quiroz, and Dante Queirolo. "Estimation of natural mortality in two demersal squat lobster species off Chile." Journal of the Marine Biological Association of the United Kingdom 99, no. 7 (September 9, 2019): 1639–50. http://dx.doi.org/10.1017/s0025315419000717.
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AbstractNatural mortality (M) is a key parameter for understanding population dynamics, especially in relation to harvested populations. Direct observations of M in crustaceans are scarce, due to the moulting process. Indirect methods to estimate M with easier-to-obtain life history attributes are therefore used routinely. Given their theoretical background, we reviewed the applicability of these methods for crustaceans. We applied the selected methods to two crustacean species harvested in Chilean waters: the yellow squat lobster (Cervimunida johni) and red squat lobster (Pleuroncodes monodon). Uncertainty of each M estimate was incorporated in the life history parameters that input into the indirect method (trait-error) and parameters defining the indirect method (coefficient-trait-error). Methods based on the relationship between total mortality and maximum age, or with different ages and based on life history theory were the most appropriate for crustaceans since they apply across taxa. M estimates showed high variability between species, sexes and areas. Estimations of M for C. johni varied from 0.13 to 0.28 (year−1) for males and 0.17 to 0.51 (year−1) for females. For P. monodon values for the north varied from 0.26 to 0.37 (year−1) for males and 0.24 to 0.45 (year−1) for females. In the south, values of M were higher for both males (0.43–0.68 year−1) and females (0.41–1.06 year−1). High variability in the M estimates was associated with the method and number of parameters, their uncertainty, theoretical background and probability distribution. M estimates are not comparable, raising the need to propagate the uncertainty of M into the stock assessment of Chilean squat lobsters.
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Würtz, M., and D. Marrale. "Food of striped dolphin, Stenella coeruleoalba, in the Ligurian Sea." Journal of the Marine Biological Association of the United Kingdom 73, no. 3 (August 1993): 571–78. http://dx.doi.org/10.1017/s0025315400033117.
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The stomachsof 23 striped dolphins (Stenella coeruleoalba Meyen, 1833, Cetacea), stranded along the Ligurian coast (western Mediterranean Sea), contained 32 species of cephalopods, crustaceans and fishes, totalling an estimated 2,723 prey specimens representing about 36 kg in weight. Cephalopods and bony fishes were equally important in the diet (50%). Todarodes sagittatus (34.5%) and Micromesistius poutassou (25.9%) were found to be the most important food species. Other species belonging to six cephalopod families, three crustacean families and nine bony fish families, contributed to the diet with variable numbers, weights, and occurrences, demonstrating the opportunistic character of striped dolphin feeding.
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Cao, Qianqian, Lin Liu, Hongbin Yang, Yingchun Cai, Weihua Li, Guixia Liu, Philip W. Lee, and Yun Tang. "In silicoestimation of chemical aquatic toxicity on crustaceans using chemical category methods." Environmental Science: Processes & Impacts 20, no. 9 (2018): 1234–43. http://dx.doi.org/10.1039/c8em00220g.
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Bovee, F. De. "INTERSTITIAL CRUSTACEANS AND GROUNDWATER QUALITY IN FIVE RIVERS OF THE WESTERN HIGH ATLAS (MOROCCO)." Crustaceana 72, no. 8 (1999): 893–98. http://dx.doi.org/10.1163/156854099503799.
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AbstractThis short note is a synthesis of the results dealing with the distribution of interstitial groundwater fauna, especially crustaceans, related to groundwater quality and sediment grain size. The study is devoted to five rivers of the High Atlas in Morocco. Ce bref resume synthetise les resultats a propos de la repartition des communautes des eaux interstitielles souterraines, et plus particulierement des Crustaces, en relation avec la qualite de l'eau souterraine et la granulometrie des sediments, le long de cinq cours d'eau du Haut-Atlas (Maroc).
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Guerra-García, José M., M. Pilar Cabezas, Elena Baeza-Rojano, and J. Carlos García-Gómez. "Spatial patterns and seasonal fluctuations of intertidal macroalgal assemblages from Tarifa Island, southern Spain: relationship with associated Crustacea." Journal of the Marine Biological Association of the United Kingdom 91, no. 1 (September 1, 2010): 107–16. http://dx.doi.org/10.1017/s0025315410001219.
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The dominant intertidal algal species from Tarifa Island, Strait of Gibraltar, together with the associated peracarid crustacean community, were studied over a two-year period (December 2005–December 2007). Gelidium corneum and Gymnogongrus patens were dominant at the lower levels, close to the subtidal. Valonia utricularis, Osmundea pinnatifida, a turf of Caulacanthus ustulatus and Gelidium spp., Corallina elongata and Jania rubens were distributed in intermediate levels, while Ulva rigida, Chaetomorpha aerea and Fucus spiralis were collected from upper levels. The main intertidal seaweeds of Tarifa Island showed a perennial behaviour, but maximum values of biomass were registered during late spring and beginning of summer for most of species while the highest seawater temperatures were measured in late summer and beginning of autumn. Corallina elongata and Jania rubens, the dominant species which shared a niche at platforms of intermediate levels, showed an opposite behaviour, probably to avoid competence: C. elongata showed higher biomass in April–June and lower values in August–October–December, while biomass of J. rubens was higher in December–February and lower in April–August. Associated crustaceans, including mainly amphipods (gammarids and caprellids) were also present throughout the whole year with similar seasonality to seaweeds. However, crustacean density in the intertidal was not only influenced by distribution of algae as substrate, but also by external factors, such as hydrodynamism, oxygen, weather conditions, competition or predation. The present study constitutes the first baseline study dealing with seasonal fluctuations of algae and associated crustaceans in a protected area of the Strait of Gibraltar, an important biogeographical zone between Europe and Africa and the Mediterranean and Atlantic.
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Nørgaard, Katrine Banke, and Nina Cedergreen. "Pesticide cocktails can interact synergistically on aquatic crustaceans." Environmental Science and Pollution Research 17, no. 4 (January 15, 2010): 957–67. http://dx.doi.org/10.1007/s11356-009-0284-4.
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Chertoprud, Elena S., and Anna A. Novichkova. "Crustaceans in the Meiobenthos and Plankton of the Thermokarst Lakes and Polygonal Ponds in the Lena River Delta (Northern Yakutia, Russia): Species Composition and Factors Regulating Assemblage Structures." Water 13, no. 14 (July 13, 2021): 1936. http://dx.doi.org/10.3390/w13141936.
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Information about invertebrates in the low-flow water bodies of northeastern Siberia is far from complete. In particular, little is known about crustaceans—one of the main components of meiobenthic and zooplanktonic communities. An open question is which environmental factors significantly affect the crustaceans in different taxonomic and ecological groups? Based on the data collected on the zooplankton and meiobenthos in the tundra ponds in the southern part of the Lena River Delta, analysis of the crustacean taxocene structure was performed. In total, 59 crustacean species and taxa were found. Five of these are new for the region. The species richness was higher in the large thermokarst lakes than in the small water bodies, and the abundance was higher in small polygonal ponds than in the other water bodies. Variations in the Cladocera assemblages were mainly affected by the annual differences in the water temperature; non-harpacticoid copepods were generally determined by hydrochemical factors; and for Harpacticoida, the macrophyte composition was significant. Three types of the crustacean assemblages characteristic of different stages of tundra lake development were distinguished. The hypothesis that the formation of crustacean taxocenes in the Lena River Delta is mainly determined by two types of ecological filters, temperature and local features of the water body, was confirmed.
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Cartes, J. E., T. Brey, J. C. Sorbe, and F. Maynou. "Comparing productionbiomass ratios of benthos and suprabenthos in macrofaunal marine crustaceans." Canadian Journal of Fisheries and Aquatic Sciences 59, no. 10 (October 1, 2002): 1616–25. http://dx.doi.org/10.1139/f02-130.
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Using available data from the literature, we compared the productionbiomass ratios (P/B) between the suprabenthic (= hyperbenthic) and the benthic (infaunaepifauna) species within the group of the macrofaunal marine crustaceans. This data set consists of 91 P/B estimates (26 for suprabenthos and 65 for infaunaepifauna) for 49 different species. Suprabenthic crustacean P/B was significantly higher than P/B of benthic crustacean (post-hoc Scheffé test; one-way analysis of covariance, ANCOVA; p < 103) and also of other (noncrustacean) benthic invertebrate (p < 104). Predictive multilinear regression (MLR) analysis for macrofaunal marine crustaceans showed P/B to depend significantly on mean annual temperature (T) and mean individual weight (W) (R2 = 0.367). Adding the variable swimming capacity increased goodness-of-fit to R2 = 0.528. The higher P/B of suprabenthic (= swimming) macrofauna in comparison with that of the benthic compartment seems to be related to the most apparent feature of the suprabenthos, its swimming capacity. The high P/Bs reported for suprabenthic species indicate how a nontrivial part of benthic production can be ignored if suprabenthos is not well sampled, therefore biasing the models of energy flow generated for trophic webs.
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Carmichael, Stephen W. "Look in a Microscope to Determine the Age of a Shrimp, Crab, or Lobster!" Microscopy Today 21, no. 3 (May 2013): 8. http://dx.doi.org/10.1017/s1551929513000412.
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The ability to determine the age of commercially important aquatic species is important to managing their populations. Whereas the age of most aquatic animals can be found by counting annual growth bands in hard structures, such as the fish otoliths (stone-like structures in the ear that are important for balance and orientation) and bivalves' shells, a technique to directly and accurately age individual crustaceans does not exist. At least it didn't until the recent study by Raouf Kilada, Bernard Sainte-Marie, Rémy Rochette, Neill Davis, Caroline Vanier, and Steven Campana. This is a bit of surprise because nothing equivalent to the hard structures of fish or bivalves had been found, or even expected to exist, in crustaceans. This is simply because this group of animals grow by molting or by shedding off their skins. Not only does molting frequency vary considerably among species of crustaceans, but molting individuals are assumed to lose and replace all calcified structures, including the cuticle (exoskeleton), that might record annual growth.
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Liu, Lin, Hongbin Yang, Yingchun Cai, Qianqian Cao, Lixia Sun, Zhuang Wang, Weihua Li, Guixia Liu, Philip W. Lee, and Yun Tang. "In silico prediction of chemical aquatic toxicity for marine crustaceans via machine learning." Toxicology Research 8, no. 3 (2019): 341–52. http://dx.doi.org/10.1039/c8tx00331a.
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Jimenez-Gutierrez, Stephanie, Cristian E. Cadena-Caballero, Carlos Barrios-Hernandez, Raul Perez-Gonzalez, Francisco Martinez-Perez, and Laura R. Jimenez-Gutierrez. "Crustacean vitellogenin: a systematic and experimental analysis of their genes, genomes, mRNAs and proteins; and perspective to Next Generation Sequencing." Crustaceana 92, no. 10 (October 23, 2019): 1169–205. http://dx.doi.org/10.1163/15685403-00003930.
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Abstract Crustacean vitellogenesis is a process that involves Vitellin, produced via endoproteolysis of its precursor, which is designated as Vitellogenin (Vtg). The Vtg gene, mRNA and protein regulation involve several environmental factors and physiological processes, including gonadal maturation and moult stages, among others. Once the Vtg gene, mRNAs and protein are obtained, it is possible to establish the relationship between the elements that participate in their regulation, which could either be species-specific, or tissue-specific. This work is a systematic analysis that compares the similarities and differences of Vtg genes, mRNA and Vtg between the crustacean species reported in databases with respect to that obtained from the transcriptome of Callinectes arcuatus, C. toxotes, Penaeus stylirostris and P. vannamei obtained with MiSeq sequencing technology from Illumina. Those analyses confirm that the Vtg obtained from selected species will serve to understand the process of vitellogenesis in crustaceans that is important for fisheries and aquaculture.
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Alves, Dário Mendes, Margarida Cristo, João Sendão, and Teresa Cerveira Borges. "Diet of the cuttlefish Sepia officinalis (Cephalopoda: Sepiidae) off the south coast of Portugal (eastern Algarve)." Journal of the Marine Biological Association of the United Kingdom 86, no. 2 (March 13, 2006): 429–36. http://dx.doi.org/10.1017/s0025315406013312.
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The diet of Sepia officinalis was studied by examining the stomach contents of 522 specimens caught off the coast of the Algarve, Portugal. A total of 49 different prey items, belonging to six taxa (Polychaeta, Cephalopoda, Teleostei, Bivalvia, Crustacea and Gastropoda) was found, indicating opportunistic feeding behaviour. The diet was examined in relation to season, sex and size. The diet of males and females were similar. For small S. officinalis, crustaceans were more important in weight, whereas for larger specimens, fish were dominant. Seasonal differences in the diet were apparent but were shown to be possibly influenced by the cuttlefish size.
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Perdomo-Morales, Rolando, Vivian Montero-Alejo, Leandro Rodríguez-Viera, and Erick Perera. "Evaluation of anticoagulants and hemocyte-maintaining solutions for the study of hemolymph components in the spiny lobster Panulirus argus (Latreille, 1804) (Decapoda: Achelata: Palinuridae)." Journal of Crustacean Biology 40, no. 2 (January 30, 2020): 213–17. http://dx.doi.org/10.1093/jcbiol/ruz099.
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Abstract Functional studies on humoral or cellular responses in the hemolymph of crustaceans require the selection of suitable anticoagulant- and hemocyte-maintaining solutions. We studied the suitability of several anticoagulant- and hemocyte-maintaining solutions in the spiny lobster Panulirus argus (Latreille, 1804), with emphasis in the preservation of hemocyte number and viability. It was found that the modified Alsever solution was the ideal anticoagulant, while modified L-15 medium and Panulirus argus saline (PAS) were the best hemocyte-maintaining solutions. It is striking that whereas avoiding plasma clotting is relatively simple to achieve, avoiding lysis and aggregation of hemocytes could be challenging and variable among closely related crustaceans. The reasons are hardly known and might indicate different composition or sensitivity of both membrane-bound and soluble mediators in any of the three types of hemocytes identified among decapod crustaceans. Hemolymph volume average in P. argus was 10.5% of fresh body weight (more than 50 ml per adult individual), which makes this species an attractive model for functional studies of hemolymph components in crustaceans.
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Rasmussen, A., and O. Andersen. "Apparent water permeability as a physiological parameter in crustaceans." Journal of Experimental Biology 199, no. 12 (December 1, 1996): 2555–64. http://dx.doi.org/10.1242/jeb.199.12.2555.
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This article reviews the use of apparent water permeability (AWP) calculated from measurements of isotope-labelled water flux as a physiological estimate of whole-body water permeability in aquatic invertebrates. The rationale and practices of AWP calculations are described in an Appendix. AWP calculations have provided a wealth of information. However, the validity of the method and therefore also of the information obtained have been questioned. Consequently, the use of AWP data in discussions of osmotic and fluid homeostatic questions in aquatic invertebrates is limited. This article reviews three decades of published experiments in which measurements of isotope-labelled water fluxes were used to estimate water permeability in aquatic invertebrates. Data on 24 species of arthropod, most of them decapod crustaceans, are presented. The combined data indicate that the results obtained by different investigators on the same species show good agreement, even though different tracers and experimental methods have been applied. When available, results from other kinds of studies were used to evaluate the results obtained using the AWP measurements. The various results demonstrate that AWP is influenced not only by natural environmental factors, such as salinity and temperature, and by anthropogenic factors, such as potentially toxic trace metals, but that it is also regulated by intrinsic factors, such as ecdysis and life cycle stage. The results obtained can often be explained as effects of components of the habitat of the animal. Accordingly, studies on variations in AWP contribute to our understanding of the different physiological strategies used by species living in a changing environment. We conclude that calculations of AWP offer reliable, relevant physiological data in a range of crustacean species, as long as methodological limitations and uncertainties are kept in mind. In addition, we propose some possible new ways of applying AWP calculations to marine invertebrates other than crustaceans. A major part of this review describes results already obtained for the shore crab Carcinus maenas as this species is probably the animal on which most work has been carried out. We suggest topics for future work on this species and review the possibility of using AWP in C. maenas as a biomarker of metal exposure.
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Ritz, David A. "Gut residence time in pelagic crustaceans." Journal of the Marine Biological Association of the United Kingdom 88, no. 1 (February 2008): 65–67. http://dx.doi.org/10.1017/s0025315408000118.
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Gut residence time (GRT) is often reported to be extremely variable among crustaceans. In this study, GRT was measured in tethered mysids that were fed continuously, and appearance of the first faecal pellet was found to be quite consistent averaging 1.6 h. There was no significant difference between GRT in those mysids held singly and those accompanied by free-swimming conspecifics, even though previous studies have shown metabolic benefits in social behaviour. Gut residence time data from a range of pelagic crustaceans feeding continuously showed a clear linear relationship with size. It appears that, when feeding ceases and crustaceans are allowed to clear their guts in filtered water, GRT can be very long and variable. However, when feeding is continuous, GRT can be relatively short and consistent.
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Conti, Stéphane G., David A. Demer, and Andrew S. Brierley. "Broad-bandwidth, sound scattering, and absorption from krill (Meganyctiphanes norvegica), mysids (Praunus flexuosus and Neomysis integer), and shrimp (Crangon crangon)." ICES Journal of Marine Science 62, no. 5 (January 1, 2005): 956–65. http://dx.doi.org/10.1016/j.icesjms.2005.01.024.
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Abstract Sound scattering and absorption by Northern krill (Meganyctiphanes norvegica) were measured over the acoustic bandwidth of 30–210 kHz and compared with similar scattering measurements for Antarctic krill (Euphausia superba). The measurements of total target strength (TTS; energy scattered in all directions, averaged over all angles of incidence) match the SDWBA model (stochastic distorted-wave Born approximation) recently developed for Antarctic krill, indicating its validity for other euphausiid species with similar size and shape. However, the TTS of crustaceans with markedly different shapes are not well predicted by SDWBA derived with the generic krill shape and scaled to animal length (L). Therefore, crustacean target strength (TS) may not be estimated accurately by a linear function of log10(L), irrespective of shape, questioning the validity of the current TS relationship used for Antarctic krill derived from data measured from multiple crustaceans. TTS and TS are dependent upon both L and shape, and different crustaceans have significantly different shapes and width-to-length relationships. In contrast, modelled TTS and TS spectra for gravid and non-gravid krill appear to have differing amplitudes, but similar shapes. Additionally, measurements of absorption spectra from decapods indicate that the absorption cross-section increases with the volume of the animal.
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Caddy, J. F. "Modelling Stock–Recruitment Processes in Crustacea: Some Practical and Theoretical Perspectives." Canadian Journal of Fisheries and Aquatic Sciences 43, no. 11 (November 1, 1986): 2330–44. http://dx.doi.org/10.1139/f86-285.
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Several approaches toward development of stock and recruitment models for exploited crustacean populations are reviewed. Such approaches include modifications of classical stock–recruitment models, or ones more directly related to crustacean biology. The latter are believed to offer the most promise for practical application. Standard yield per recruit models using continuous growth functions have been applied to crustacean stocks, but moult increment – frequency versions of yield per recruit calculations better reflect the discrete growth in crustaceans and changes in growth on maturity. They can be extrapolated easily to calculate fecundity per recruit and assess the impact of exploitation on spawning potential. Simple, semiquantitative approaches, such as life history tables, promote investigation of hypotheses of growth, mortality, maturity/fecundity, and harvesting strategy on management, but like yield per recruit models, cannot easily take into account density-dependent recruitment. We may look forward to the development of models that take into account the nature of crustacean life histories, reflecting the need for cross-scheduling of growth and reproduction in environmentally limiting conditions. Modelling life history processes in biological time units related to moult cycle duration, and cross-converting to real time for consideration of the fisheries component, should offer a notable simplification of the modelling process. The existence of several "choices" for an individual crustacean at different points in the moulting/reproduction cycles makes cohort models cumbersome and seems to require the adoption of a stochastic approach, for instance Markov-related processes, which better take into account complexities of biology and fishery-related processes. For many crustaceans, recruitment is believed to be subject to a "bottleneck" somewhere subsequent to the early larval stages, and identification of the species niche for postlarval stages could be of great practical importance for management and stock enhancement. The concept of the fractal surface as a postlarval and juvenile habitat is suggested as a promising approach, and an expression for natural mortality at size is derived for obligate crevice dwellers on a fractal surface. In relatively few circumstances for Crustacea have density-dependent factors been demonstrated in the field as affecting spawning success and the survival to recruitment of postlarval and juvenile stages. Recruit survival appears to be dominated by environmental conditions that vary significantly; seasonal timing of larval release depending on environmental change from year to year. Short-cutting the investigation of precise impacts of stock density, fishing effort, and environment on recruitment can be achieved using production models, delayed recruitment models, models with autoregressive terms, or production models using mortality rates, where effort definition is difficult and catchability a function of behaviour and environnment. The overriding influence of environment on recruitment success is illustrated for both short- and long-lived species in the tropics and northern latitudes, and this is especially true for high unit value Crustacea resources whose heavily exploited fisheries generally operate at low spawning stock sizes. Fluctuating predator density, or other multispecies interactions, affect recruitment and available number of niches, and modelling of trophic relationships has promise. The range of possible models corresponds to various degrees of refinement of the data base, and the importance of biotic, abiotic, and geographical factors in controlling crustacean recruitment is stressed. Also of fundamental importance are the economics of exploitation of species with a high and elastic demand, which results in high actual and latent levels of effort, fisheries heavily dependent on incoming year-classes, and serious problems in maintaining exploitation rates at reasonable levels.
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Ward, T., and SF Rainer. "Decapod Crustaceans of the North West Shelf, a Tropical Continental Shelf of North-western Australia." Marine and Freshwater Research 39, no. 6 (1988): 751. http://dx.doi.org/10.1071/mf9880751.
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The North West Shelf is a tropical continental shelf with a highly diverse fauna of epibenthic decapod crustaceans. The 357 taxa of epibenthic crustaceans, including 308 decapods, recorded from four sites are more than reported from any other continental shelf. The dominant taxa were amphipods, portunid crabs, xanthid crabs, palaemonid shrimps, hermit crabs, crangonid shrimps, sergestid shrimps, and majid crabs, in decreasing order of abundance. The most diverse family was the leucosiid crabs, containing 39 species. The number of crustacean species collected was similar at both 40 m and 80 m depth, and only 35% of the most common species differed in abundance between the depths. The abundances of 30% of these common species appeared to be related to particle size of the sediment or to the biomass of large sedentary fauna. The abundance of 45% of the most abundant, mainly small, species differed between two sampling times 6 months apart. The abundance of many decapod crustacean species was related to depth, sediment type, bottom type, or sedentary fauna. It is concluded that the epibenthic decapod fauna at 40 and 80 m depth on the North West Shelf is a broadly distributed assemblage with high diversity, some environmentally determined pattern and, in smaller animals, significant seasonal variability.
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Wickham, Daniel E. "Epizootic Infestations by Nemertean Brood Parasites on Commercially Important Crustaceans." Canadian Journal of Fisheries and Aquatic Sciences 43, no. 11 (November 1, 1986): 2295–302. http://dx.doi.org/10.1139/f86-281.
Full textAbstract:
Historical literature presenting quantitative information on the interaction between nemertean brood parasites of crustaceans and their hosts is reviewed and compared with recent detailed studies on epizootics of these parasites. Observations over the last century demonstrate that nemertean infestations on most host species are of low intensity and result in relatively low levels of host brood mortality. Epizootics discovered in the last decade on certain host species have resulted in extensive egg loss in many important commercial crustacean stocks. The data at hand suggest that epizootics are primarily restricted to commercially exploited species of decapods. One implication of this is that human exploitation affects natural host–parasite balance.
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Fingerman, Milton. "The Endocrine Mechanisms of Crustaceans." Journal of Crustacean Biology 7, no. 1 (February 1987): 1. http://dx.doi.org/10.2307/1548622.
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Gribble, N. "A Prototype Oximeter for Crustaceans." Crustaceana 68, no. 1 (1995): 115–21. http://dx.doi.org/10.1163/156854095x00430.
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Gribble, N. "A Prototype Oximeter for Crustaceans." Crustaceana 68, no. 8 (1995): 115–21. http://dx.doi.org/10.1163/156854095x01213.
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