{"title":"Food and feeding strategies of the green tiger shrimp, Penaeus semisulcatus, in southeastern India","authors":"Muthusamy Rajkumar, Saraswathy L Pillai, Raju Saravanan, Shanmugam Thirumalaiselvan, Lalitha Remya","doi":"10.1093/jcbiol/ruae017","DOIUrl":"https://doi.org/10.1093/jcbiol/ruae017","url":null,"abstract":"Observations and analysis of the food and feeding habits of penaeid shrimp are decisive for understanding food webs and ecological processes. Published information on the feeding habits of the green shrimp, Penaeus semisulcatusDe Haan, 1844, from Indian waters, however, dates back four decades, despite the fact that green tiger shrimp is one of the important shrimp species that forms a unique fishery in Palk Bay, on the southeastern India. Hence, its dietary preferences were analysed concerning sex, season, gonad maturity, and size. The species preyed on were composed of diversified components, with mollusc remains being the most common food item in females, followed by crustacean remains, whereas in males, the crustacean remains were the most common food items followed by mollusc remains. There was no significant difference in the gastrosomatic index of females and gonadal maturity stages among seasons, but a significant difference among size groups. In males, there was no significant difference among seasons, gonadal maturity, and size groups. Females were more active feeders than males, and the difference could be seen in their size groups. Larger groups fed more actively than smaller groups. Feeding was more active in the post-monsoon and summer monsoon seasons. Penaeus semisulcatus dominates the ecosystem among the shrimp species due to its carnivorous behaviour. The observations made in this study form key inputs for trophic modelling and ecosystem-based studies, which could help develop suitable strategies for managing the shrimp resource in Palk Bay.","PeriodicalId":54850,"journal":{"name":"Journal of Crustacean Biology","volume":"51 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2024-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140624922","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Biology, distribution and conservation of a dwarf-group crayfish, Euastacus spinichelatus Morgan, 1997 (Decapoda: Astacidea: Parastacidae), a freshwater crayfish from the Great Dividing Range, New South Wales, Australia","authors":"Robert B McCormack, Nick S Whiterod","doi":"10.1093/jcbiol/ruae011","DOIUrl":"https://doi.org/10.1093/jcbiol/ruae011","url":null,"abstract":"We present the outcomes of two conservation initiatives, namely ‘The Australian Crayfish’ and ‘Saving the Spinys’ projects, which have substantially contributed to enhancing our understanding of E. spinichelatus concerning its distribution, habitat, biology, and conservation status. We extend the range of E. spinichelatus to encompass the headwater reaches of the Namoi River within the Murray-Darling Basin. The use of molecular taxonomy analyses identified divergent lineages that acted to remove the southeastern tributaries of the Hastings River and the most western tributary of the Manning River from the range of E. spinichelatus. The species has suffered significant population declines in recent years, with it appearing to be highly susceptible to anthropogenic changes, drought and/or high-severity bushfires. Results advocate for the classification of E. spinichelatus as an endangered species, recognizing its distinctive ecological niche and its status as a climate refugee, aiming to protect this rare species from anthropogenic and climate-related challenges. We also present a taxonomic key differentiating E. spinichelatus from other members of Parastacidae in the region.","PeriodicalId":54850,"journal":{"name":"Journal of Crustacean Biology","volume":"25 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2024-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140108284","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Iris Gabriela Meza-Sánchez, Alejandro M Maeda-Martínez, Hortencia Obregón-Barboza, Humberto García-Velazco, Gabino A Rodríguez-Almaraz, Gorgonio Ruiz-Campos, Gopal Murugan
{"title":"The systematics of the amphidromous shrimp Macrobrachium tenellum (Smith, 1871) (Decapoda: Caridea: Palaemonidae) from the Mexican Pacific slope","authors":"Iris Gabriela Meza-Sánchez, Alejandro M Maeda-Martínez, Hortencia Obregón-Barboza, Humberto García-Velazco, Gabino A Rodríguez-Almaraz, Gorgonio Ruiz-Campos, Gopal Murugan","doi":"10.1093/jcbiol/ruae013","DOIUrl":"https://doi.org/10.1093/jcbiol/ruae013","url":null,"abstract":"We had previously revised the systematics of four species of MacrobrachiumSpence Bate, 1868 from the Pacific coast of Mexico, including the Baja California Peninsula (BCP): M. americanumSpence Bate, 1868, M. digueti (Bouvier, 1895), M. hobbsi Nates & Villalobos in Villalobos Hiriart & Nates Rodríguez, 1990, and M. occidentale Holthuis, 1950. Genetic analyses of the mitochondrial markers 16S ribosomal RNA (16S) and cytochrome oxidase I (COI) of individuals of these morphological species from BCP have shown that, even facing the Gulf of California (Sea of Cortés) as an apparent marine ecological barrier, they are conspecific to their respective genetic lineages (species) found from the Pacific slope of mainland Mexico. We discuss the systematics of the fifth species of Macrobrachium from the Mexican Pacific slope, M. tenellum (Smith, 1871) to test the hypothesis that individuals of the putative M. tenellum from BCP belong to the same species from the Pacific slope of mainland Mexico. We revised the morphological characters of taxonomic importance using material obtained in the field and voucher material deposited in Mexican scientific collections, and performed molecular genetic analyses with newly generated fragments of the mitochondrial markers 16S and COI. We conclude, as in our previous studies on Macrobrachium species of the region, that the examined specimens of the putative M. tenellum from BCP belong to the same species found on the Pacific slope of mainland Mexico, and that oceanic dispersal is responsible for the distribution of the species of Macrobrachium in the peninsula rather than by vicariant events.","PeriodicalId":54850,"journal":{"name":"Journal of Crustacean Biology","volume":"58 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2024-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140108139","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Manuel A Vargas-Ceballos, Ingo S Wehrtmann, Ernesto López-Uriarte, Fernando Vega-Villasante, Omar A Peña-Almaraz, Alí F Espinosa-Magaña, Marcelo U García-Guerrero
{"title":"Population structure and abundance of the amphidromous prawn Macrobrachium tenellum (Smith, 1871) (Decapoda: Caridea: Palaemonidae) in the lower basin of Ameca River, western Mexico, before anthropogenic modifications","authors":"Manuel A Vargas-Ceballos, Ingo S Wehrtmann, Ernesto López-Uriarte, Fernando Vega-Villasante, Omar A Peña-Almaraz, Alí F Espinosa-Magaña, Marcelo U García-Guerrero","doi":"10.1093/jcbiol/ruae012","DOIUrl":"https://doi.org/10.1093/jcbiol/ruae012","url":null,"abstract":"The population of the freshwater prawn Macrobrachium tenellum (Smith, 1871) in four sites in the lower part of the coastal plain of the Ameca River, Mexico is analyzed before drastic anthropogenic modifications of the riverbed occurred. Of the 7,100 individuals of M. tenellum collected between February 2015 and January 2016, 45.7% of which were females (3,250), 4.3% ovigerous females (309), 39.3% males (2,79), and 10.6% undifferentiated (750). Males were significantly larger and heavier than females. In general, the largest individuals were collected at the most distant sites from the coastline (Colomo and San Juan), whereas the smallest ones were captured near the river mouth. The sex ratio (males:females 1:1.3) deviated from the expected 1:1. The length-weight relationship of females, males, and the population in general indicated a negative allometric growth for all three groups. The results of our research may serve as a reference point for future investigations assessing the impact of anthropogenic changes on M. tenellum populations.","PeriodicalId":54850,"journal":{"name":"Journal of Crustacean Biology","volume":"12 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2024-03-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140099738","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Amphidromous shrimps (Decapoda: Caridea): current knowledge and future research","authors":"Valentin de Mazancourt, Juliette Ravaux","doi":"10.1093/jcbiol/ruae003","DOIUrl":"https://doi.org/10.1093/jcbiol/ruae003","url":null,"abstract":"The caridean shrimps comprise one of the largest groups of amphidromous species, sharing their life cycle between freshwater habitats and the ocean. Key species of tropical ecosystems, some of which are also targets for local or international markets without any regulations being implemented, make carideans particularly vulnerable to the threats facing natural populations. We present an inventory of amphidromous carideans and an overview of their habitats, the interests they arouse, because of their ecological role as well as for their commercial importance and the threats they face. We suggest directions for future research following an experimental-biology approach, that may help to assess risks and impacts on natural habitats and ultimately prioritize conservation and management projects.","PeriodicalId":54850,"journal":{"name":"Journal of Crustacean Biology","volume":"13 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2024-02-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139762497","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Christine San Antonio, Michael Tlusty, Robyn Hannigan
{"title":"Physiological impacts of climate change on juvenile American lobster Homarus americanus (Decapoda: Astacidea: Nephropidae), a commercially important species","authors":"Christine San Antonio, Michael Tlusty, Robyn Hannigan","doi":"10.1093/jcbiol/ruae007","DOIUrl":"https://doi.org/10.1093/jcbiol/ruae007","url":null,"abstract":"The American lobster, Homarus americanus, H. Milne Edwards, 1837 is an ecologically, economically, and culturally valuable marine resource for the coastal communities in the Gulf of Maine. Lobsters in the Gulf of Maine are experiencing the effects of rapid warming and acidification due to climate change. Lobster shells are comprised of chitin with precisely precipitated minerals (calcite, amorphous calcium carbonate, and carbonate apatite) that provide structural integrity to the shell and protection against predators and microbial intrusion. We examined the combined effects of ocean warming and acidification on shell mineralogy, epibiont abundance, and growth in early benthic juveniles. Lobsters were grown under six different temperature/pCO2 treatment conditions over 52 days (three replicates per treatment) aligned with environmentally relevant as well as predicted future extremes. Elevated pCO2 and temperature led to a decrease in shell calcium and magnesium content, suggesting that these environmental stressors inhibit shell biomineralization. There was an interactive effect of the stressors on epibiont abundance with the probability of epibiont coverage increasing with increasing pCO2 and temperature. Elevated pCO2 alone was significantly correlated (P = 0.002) to decreased growth, but only for female lobsters. Ocean acidification and warming significantly affect shell integrity in juvenile lobster, increasing risk to injury and disease with potential downstream consequences for the lobster fishery.","PeriodicalId":54850,"journal":{"name":"Journal of Crustacean Biology","volume":"5 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2024-02-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139762778","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Daniel A Sasson, Jacqueline M Allen, Matt J Walker, Jeanette H Huber, Gregory K Rothman, Peter R Kingsley-Smith, Tanya L Darden, Michael R Kendrick
{"title":"Prevalence of white spot syndrome virus (WSSV) in wild-caught and commodity decapod crustaceans in coastal South Carolina, USA","authors":"Daniel A Sasson, Jacqueline M Allen, Matt J Walker, Jeanette H Huber, Gregory K Rothman, Peter R Kingsley-Smith, Tanya L Darden, Michael R Kendrick","doi":"10.1093/jcbiol/ruae002","DOIUrl":"https://doi.org/10.1093/jcbiol/ruae002","url":null,"abstract":"White spot syndrome virus (WSSV) is a highly contagious and economically costly virus that affects many crustacean species. Since its introduction into the United States in the 1990s, it has spread from aquaculture shrimp and crayfish to wild crustaceans throughout the southeastern United States. Transmission to natural systems may occur through contact between commodity (i.e., store-bought) and wild crustaceans or the use of infected frozen shrimp as bait, which has been proven capable of transmitting the virus. In this study, we surveyed both live (Penaeus setiferus (Linnaeus, 1767) and P. aztecusIves, 1891) and frozen commodity shrimp (Penaeus vannameiBoone, 1931) and crayfish (Procambarus troglodytes (Le Conte, 1856) and P. clarkii (Girard, 1852)) as well as wild populations of some of these species of shrimp, crayfish, and blue crabs (Callinectes sapidusRathbun, 1896) in South Carolina for WSSV. We found extremely low levels of the virus in wild-caught decapods but high levels of WSSV in commodity crayfish (50%) and imported frozen shrimp (43.3%). While additional work is needed to understand the environmental conditions that affect the transmission potential of WSSV, these results suggest that care must be taken with commodity crustaceans to prevent introductions of WSSV and subsequent harm to natural ecosystems.","PeriodicalId":54850,"journal":{"name":"Journal of Crustacean Biology","volume":"4 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2024-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139560042","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Genetic variability of New Caledonian Boeckella De Guerne & Richard, 1889 (Copepoda: Calanoida), with the description of a new species","authors":"Coline Royaux, Nicolas Charpin, Nicolas Rabet","doi":"10.1093/jcbiol/ruae001","DOIUrl":"https://doi.org/10.1093/jcbiol/ruae001","url":null,"abstract":"Thirteen new freshwater populations of the copepod genus BoeckellaDe Guerne & Richard, 1889 were found during three expeditions to New Caledonia (‘La Planète Revisitée,’ 2016-2018). The 12 populations from the Plaine des Lacs, which show remarkable genetic diversity among themselves, were identified as B. spinogibbaDefaye, 1998, the only species of its genus known from New Caledonia until now. The sole exception, the population from Mont-Dore 22 km further east, appeared genetically and morphologically distinct from the others and is described herein as a new species. The two species are distinguished from each other by the shapes of the male and female P5, female Th5, and body colour. A previously published key is amended to separate the species. Our concatenated COI+28S phylogeny places the two New Caledonia species as a new branch within Boeckella, distinct from the branches consisting of South American, Antarctic and Australasian species. All 13 Boeckella populations inhabit the extreme south of New Caledonia, an area known for endemism and high heavy metal concentrations in the soil. Extensive mining activity in this metal-rich area, begun in 1873, is now leading to conflict with conservation goals. By using aerial photographs to trace the fate of the pond that is the type locality of B. spinogibba, we confirmed that it disappeared between 2007 and 2014 as a result of the expansion of the Goro nickel mine.","PeriodicalId":54850,"journal":{"name":"Journal of Crustacean Biology","volume":"11 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2024-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139560050","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Mehrdad Zamanpoore, Manfred Pöckl, Friedrich Schiemer
{"title":"Ecological and morphological correlations in the setation patterns of Gammarus Fabricius, 1775 (Amphipoda) from the southern Zagros Mountains, Iran","authors":"Mehrdad Zamanpoore, Manfred Pöckl, Friedrich Schiemer","doi":"10.1093/jcbiol/ruad083","DOIUrl":"https://doi.org/10.1093/jcbiol/ruad083","url":null,"abstract":"The southern limits of the Zagros Mountains (Iran) include various aquatic habitats ranging from cold purely fresh to warm saline springs, many of them in isolated watershed basins. Diverse habitats could be correlated with morphological variation in freshwater taxa, as in for example, highly variable patterns of setation in amphipods. We measured length and density of the setae on selected appendages in six species of Gammarus Fabricius, 1775 collected from 14 locations (two species being sympatric) and tested for correlation with seasonal mean water temperature, dissolved oxygen, salinity, and pH of their respective habitats. The results were analyzed using analysis of variance, linear model, and correlation analysis. These regions showed significant variation in the selected ecological factors, and the species had significantly different patterns of setation. It may be supposed that increasing setation in gammarids can improve ventilating activity and hence their respiratory efficiency at higher temperatures and salinity conditions. This correlation may reflect selective pressure on the speciation of gammaridean amphipods in the southern Zagros region.","PeriodicalId":54850,"journal":{"name":"Journal of Crustacean Biology","volume":"6 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2024-01-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139510470","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Fernando L Mantelatto, Nielson F C França, Andressa M Cunha, Alexandre O Almeida
{"title":"Molecular data highlight cryptic diversity and reveal a new species in the Synalpheus brevicarpus (Herrick, 1891) complex (Decapoda: Caridea: Alpheidae) in the Western Atlantic","authors":"Fernando L Mantelatto, Nielson F C França, Andressa M Cunha, Alexandre O Almeida","doi":"10.1093/jcbiol/ruad076","DOIUrl":"https://doi.org/10.1093/jcbiol/ruad076","url":null,"abstract":"Representatives of species of alpheid shrimps included in Synalpheus Spence Bate, 1888 exhibit spectacular and distinct behaviors such as eusociality. The wide range of morphological variations in these taxa makes taxonomic understanding difficult. The phylogenetic relationships of the species that comprise the Synalpheus brevicarpus (Herrick, 1891) complex are little known, especially for individuals from South America. Our investigation represents an additional approach to elucidate some aspects of the phylogeny of this species complex. Morphological and molecular evidence resulting from our analyses revealed the existence of a cryptic entity within the S. brevicarpus complex in southeastern Brazil.","PeriodicalId":54850,"journal":{"name":"Journal of Crustacean Biology","volume":"20 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2023-12-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139055804","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}