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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 J. Crust. Biol. (IF 1.1) Pub Date : 2024-03-11 Robert B McCormack, Nick S Whiterod
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
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The systematics of the amphidromous shrimp Macrobrachium tenellum (Smith, 1871) (Decapoda: Caridea: Palaemonidae) from the Mexican Pacific slope J. Crust. Biol. (IF 1.1) Pub Date : 2024-03-11 Iris Gabriela Meza-Sánchez, Alejandro M Maeda-Martínez, Hortencia Obregón-Barboza, Humberto García-Velazco, Gabino A Rodríguez-Almaraz, Gorgonio Ruiz-Campos, Gopal Murugan
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
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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 J. Crust. Biol. (IF 1.1) Pub Date : 2024-03-09 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
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
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Amphidromous shrimps (Decapoda: Caridea): current knowledge and future research J. Crust. Biol. (IF 1.1) Pub Date : 2024-02-09 Valentin de Mazancourt, Juliette Ravaux
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
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Physiological impacts of climate change on juvenile American lobster Homarus americanus (Decapoda: Astacidea: Nephropidae), a commercially important species J. Crust. Biol. (IF 1.1) Pub Date : 2024-02-09 Christine San Antonio, Michael Tlusty, Robyn Hannigan
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
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Genetic variability of New Caledonian Boeckella De Guerne & Richard, 1889 (Copepoda: Calanoida), with the description of a new species J. Crust. Biol. (IF 1.1) Pub Date : 2024-01-23 Coline Royaux, Nicolas Charpin, Nicolas Rabet
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
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Prevalence of white spot syndrome virus (WSSV) in wild-caught and commodity decapod crustaceans in coastal South Carolina, USA J. Crust. Biol. (IF 1.1) Pub Date : 2024-01-23 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
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
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Ecological and morphological correlations in the setation patterns of Gammarus Fabricius, 1775 (Amphipoda) from the southern Zagros Mountains, Iran J. Crust. Biol. (IF 1.1) Pub Date : 2024-01-19 Mehrdad Zamanpoore, Manfred Pöckl, Friedrich Schiemer
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
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Molecular data highlight cryptic diversity and reveal a new species in the Synalpheus brevicarpus (Herrick, 1891) complex (Decapoda: Caridea: Alpheidae) in the Western Atlantic J. Crust. Biol. (IF 1.1) Pub Date : 2023-12-23 Fernando L Mantelatto, Nielson F C França, Andressa M Cunha, Alexandre O Almeida
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
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Intraspecific morphological variations in the Iranian endemic freshwater crab Potamon strouhali (Decapoda: Brachyura: Potamidae) J. Crust. Biol. (IF 1.1) Pub Date : 2023-12-22 Movahhed Najafi, Alireza Keikhosravi, Reza Naderloo
Potamon strouhali Pretzmann, 1976 is endemic to Iran, and distributed in a small heterogeneous region of the southern Persian plateau that includes two main drainage basins, the Khalij Fars-Oman and Markazi basins. Two subspecies of P. strouhali were previously recognized, but these, together with another species described that same year, P. eiseltiPretzmann, 1976, were all considered to be one species
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Revision of the Chinese freshwater crab genus Tenuipotamon Dai, 1990 (Decapoda: Brachyura: Potamidae), with the description of a new genus from southwestern China J. Crust. Biol. (IF 1.1) Pub Date : 2023-12-22 Boyang Shi, Darren C J Yeo, Hongying Sun
The taxonomy of the potamiscine freshwater crab genus Tenuipotamon Dai, 1990, which contains seven species, is revised. According to a concurrent molecular phylogenetic study, Tenuipotamon is paraphyletic, and is composed of two lineages. In this study, Tenuipotamon sensu stricto is restricted to its type species, T. purpura Dai, 1990, while a new genus, Pusillamongen. nov., is established to accommodate
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A new species of stygobitic Hyalella Smith, 1874 (Amphipoda: Hyalellidae) from Ash Meadows National Wildlife Refuge, Nevada, USA, with discussion of the unique presence of the species in the Nearctic groundwater fauna J. Crust. Biol. (IF 1.1) Pub Date : 2023-12-13 Andrew G Cannizzaro, Corey J Lange, David J Berg
A new species of stygobitic hyalellid amphipod, Hyalella cretaen. sp., is described from Ash Meadows National Wildlife Refuge, Nye County, Nevada, USA, based on both morphological and molecular comparisons to congeners. These data identify H. cretaen. sp. as distinct when compared to allied species. Along with the similar Hyalella muertaBaldinger, Shepard & Threloff, 2000, H. cretaen. sp. marks the
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The smaller, the better? First evaluation of growth and mortality in crayfish internally tagged with p-Chips J. Crust. Biol. (IF 1.1) Pub Date : 2023-11-28 Augusto F Huber, Wesley A Fitzsimmons, Jacob T Westhoff
Small-bodied aquatic animals present a challenge to researchers seeking to uniquely mark individuals for scientific study. Microtransponder tags, such as p-Chips, represent the smallest electronic animal tags available to meet this need. The use of p-Chips to tag freshwater crayfishes, however, has not been explored. The goal of this study, therefore, was to determine the effects of p-Chip tagging
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Insights on the connectivity, genetic diversity, and population structure of Arctodiaptomus dorsalis (Marsh, 1907) (Copepoda: Calanoida: Diaptomidae) in the Philippines J. Crust. Biol. (IF 1.1) Pub Date : 2023-11-28 Shea K P Guinto, Ryuji J Machida, Rey D S Papa
The freshwater calanoid copepod Arctodiaptomus dorsalis (Marsh, 1907) was first recorded from the Philippines in 2001 in Laguna de BayThe copepod gained the status of “invasive species” in 2021 due to its presence in 23 of 32 surveyed Philippine lakes and rivers. Genomic DNA was extracted from 107 individuals of A. dorsalis, representing seven populations on the island of Luzon to gather information
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Long-term circatidal rhythms of heart rate, gill ventilation, and locomotion in the American horseshoe crab, Limulus polyphemus Linnaeus, 1758 (Arthropoda: Chelicerata: Merostomata: Limulidae) J. Crust. Biol. (IF 1.1) Pub Date : 2023-11-27 Rebecca L Anderson, Winsor H Watson, Christopher C Chabot
While several marine species exhibit biological rhythms of heart rate, gill ventilation, or locomotion, the relationship between these three measures in any species remains unexplored. The American horseshoe crab, Limulus polyphemusLinnaeus, 1758, expresses circalunidian locomotor rhythms and circadian eye sensitivity rhythms, but it is not clear if either heart and ventilation rates are controlled
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The use of bivalve shells by the shellback crabs Hypoconcha arcuata Stimpson, 1858 and H. parasitica (Linnaeus, 1763) (Brachyura: Dromiidae: Hypoconchinae) in southeastern Brazil J. Crust. Biol. (IF 1.1) Pub Date : 2023-11-17 Maria A Garcia-Bento, Fernando J Zara, Lucas R P Paschoal
We describe the use of abraded bivalve shells by the shellback crabs Hypoconcha arcuataStimpson, 1858 and H. parasitica (Linnaeus, 1763) in southeastern Brazil. Shells from four species of bivalves were associated with the crabs: Eucallista purpurata (Lamarck, 1818), Chionopsis crenata (Gmelin, 1791), and Tivela zonaria (Lamarck, 1818) (Veneridae), and, most frequently (50%), Dallocardia delicatula
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Photographic characterisation of acidification-induced larval malformations in the European lobster Homarus gammarus (Linnaeus, 1758) (Decapoda: Astacidea: Nephropidae) J. Crust. Biol. (IF 1.1) Pub Date : 2023-11-12 Kirti Ramesh, Linda Svanberg, Isabel Casties, Susanne Eriksson, Sam Dupont
Occurrence of developmental malformations is of interest since they potentially influence organismal performance and fitness. We report an increased incidence (⁓ 46 fold) of physical malformations in the larvae of the American lobster Homarus Gammarus (Linnaeus, 1758) in response to seawater acidification (–0.58 pH units relative to nominal pH 8.0). We observed three malformations under the influence
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Refining age at legal-size estimation in the Newfoundland & Labrador populations of the snow crab Chionoecetes opilio (Fabricius, 1788) (Decapoda: Brachyura: Oregoniidae) J. Crust. Biol. (IF 1.1) Pub Date : 2023-11-08 Darrell Mullowney, Nicole O’Connell, Raouf Kilada, Rémy Rochette
Current knowledge of age at legal size in Newfoundland & Labrador (NL) and other snow-crab stocks is incomplete due to historic estimations not accounting for skip-molting growth delays. Previous work has shown skip-molting incidence to occasionally be very high in males, both in NL and some other major snow-crab stocks. This warrants research to better understand impacts of skip-molting on snow-crab
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Validation of Penaeus simplex (Decapoda: Dendrobranchiata: Penaeidae), a commercially important prawn from Indonesia J. Crust. Biol. (IF 1.1) Pub Date : 2023-11-08 Tin-Yam Chan, Zainal Abidin Muchlisin, Amirah Hurzaid
The name Penaeus simplex, given to a new species of prawn species by Tin-Yam Chan, Zainal Abidin Muchlisin, and Amirah Hurzaid (2021) in an article published in Journal of Crustacean Biology (https://doi.org/10.1093/jcbiol/ruaa096) is deemed to be unavailable according to the International Code of Zoological Nomenclature (Code) because that article is an electronic-only publication and did not include
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Reproductive biology of the red swamp crayfish Procambarus clarkii (Girard, 1852) (Decapoda: Astacidea: Cambaridae): A review J. Crust. Biol. (IF 1.1) Pub Date : 2023-10-20 Katsuyuki Hamasaki, Shigeki Dan, Tadashi Kawai
The red swamp crayfish Procambarus clarkii (Girard, 1852) is an alien invasive species as well as a commercially exploited animal. The sterile-male-release technique (SMRT) using infertile but sexually active males has been an effective candidate measure to control this invasive crayfish. Additionally, the limited supply of juveniles due to females’ spawning seasonality hinders the further development
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Alternation of the female form in Cambaridae (Decapoda: Astacidea) and the designation of a neotype for Procambarus clarkii (Girard, 1852) (Cambaridae: Decapoda) J. Crust. Biol. (IF 1.1) Pub Date : 2023-10-17 Tadashi Kawai, Colin L McLay
The alternation of the female form is examined in eleven species of Cambaridae: Cambarus angularisHobbs & Bouchard, 1994, C. bartonii (Fabricius, 1798), Faxonius virilis (Hagen, 1870), Procambarus alleni (Faxon, 1884), P. clarkii (Girard, 1852), P. fallax (Hagen, 1870), P. pallidus (Hobbs, 1940), Cambarellus leslieiFitzpatrick & Laning, 1976, C. patzcuarensisVillalobos, 1943, C. schmittiHobbs, 1942
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A new species of Janiralata Menzies, 1951 (Isopoda: Janiridae) from Japanese bathyal waters, with a review of the associations with invertebrates among the species of Janiralata J. Crust. Biol. (IF 1.1) Pub Date : 2023-08-31 Mizuki Ohta, Tsuyoshi Takano, Shigeaki Kojima, Yoji Narimatsu
Isopods of the genus Janiralata Menzies, 1951 (Asellota: Janiridae) are known from shallow and deep waters of the Northern Hemisphere. Most species are free-living, but some are symbiotic on the surface of other benthic invertebrates. We obtained from three beam- and four otter-trawl hauls 18 Janiralata asellote specimens from the bathyal zone off the Pacific coasts of Tohoku, northeastern Japan. Partial
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Genomic survey sequencing and complete mitochondrial genome of the elkhorn coral crab Domecia acanthophora (Desbonne in Desbonne & Schramm, 1867) (Decapoda: Brachyura: Domeciidae) J. Crust. Biol. (IF 1.1) Pub Date : 2023-08-23 Henrique Bravo, J Antonio Baeza, Sancia E T van der Meij
The elkhorn coral crab Domecia acanthophora inhabits shallow-water coral reefs in the Western Atlantic. The species has a wide distribution and, although primarily associated with endangered Acropora corals, has been recorded from a myriad of hosts. Here we conducted the first genomic survey and complete mitochondrial assemblage and characterisation of any species of Domeciidae, as well as the first
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Observations of the association by early-juvenile western rock lobster Panulirus cygnus with seagrass assemblages (Decapoda: Achelata: Palinuridae) J. Crust. Biol. (IF 1.1) Pub Date : 2023-08-23 Daphne Oh, Tim J Langlois, Michael A Brooker, Hugo Salinas, Jason R How, Simon N de Lestang
The fishery of the western rock lobster, Panulirus cygnusGeorge, 1962, is Australia’s most valuable wild-caught single-species fishery. Recruitment in some regions of the fishery was observed to be significantly lower than expected after the 2010/2011 West Australian marine heatwave that caused extensive disturbance of dominant coastal habitats. This event generated interest in the study of the factors
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Null models to explain highly diverse community of intertidal decapods on a temperate rocky coast in Antofagasta, northern Chile (23º27ʹS) J. Crust. Biol. (IF 1.1) Pub Date : 2023-08-21 Patricio De los Ríos-Escalante, Eliana Ibáñez-Arancibia, Carlos Esse, Oscar Zúñiga, Maritza Fajardo, Farhana S Ghory
The decapod fauna on intertidal shores in northern Chile is characterized by its relatively high diversity and abundance due to the presence of continuous upwelling by the Humboldt Current, which results in a high productivity. The decapod fauna on intertidal rocky shores is characterized by coexisting species that inhabits in natural shelters such as cracks and eroded rocks, as well as among macroalgae
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Variation and taphonomic implications of composition in modern and fossil malacostracan cuticles (Decapoda: Malacostraca) J. Crust. Biol. (IF 1.1) Pub Date : 2023-08-19 Roy E Plotnick, Steve McCarroll
The crustacean fossil record is dominated by mineralized forms. These fossils, in turn, are mainly decapod chelae or parts of chelae. Studies of the composition of modern crustacean cuticles have likewise been dominated by decapods. We summarize major element chemical analyses (Ca, Mg, Na, P) using SEM-EDS of modern crustacean exoskeletons from Bermuda, Georgia (USA), and Lake Tanganyika (Burundi)
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Grazing activity of Clibanarius corallinus (H. Milne Edwards, 1848) (Decapoda: Anomura: Diogenidae) on epilithic algae in Australian coral reefs J. Crust. Biol. (IF 1.1) Pub Date : 2023-08-11 Henrique Bravo, Ian R Tibbetts
Following an incidental observation of captive Clibanarius corallinus (H. Milne Edwards, 1848) supposedly removing algae from each other’s shells, we conducted a feeding experiment over 72 hours to understand its potential role as a mesograzer in coral reef ecosystems. Epiphyte-covered, coral rubble fragments of Acropora spp. were exposed to hermit crab (N = 41) activity for 72 h in a flow-through
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First record of leucism in a primary burrowing crayfish: Distocambarus crockeri Hobbs & Carlson, 1983 (Decapoda: Astacidea: Cambaridae) from South Carolina, USA J. Crust. Biol. (IF 1.1) Pub Date : 2023-08-01 Megan B Stubbs, Hogan D Wells, Zanethia C Barnett, Michael R Kendrick, Zachary J Loughman, Zackary A Graham
The piedmont prairie burrowing crayfish, Distocambarus crockeri Hobbs & Carlson, 1983, is a primary burrowing crayfish endemic to South Carolina, USA. The species is the most widely distributed and studied of the five species of Distocambarus Hobbs, 1981. Surveys have clarified the species distribution and habitat, but, like other burrowing crayfishes, our understanding of its ecology is lacking. We
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Benchmarking global biodiversity of decapod crustaceans (Crustacea: Decapoda) J. Crust. Biol. (IF 1.1) Pub Date : 2023-08-01 Sammy De Grave, Wim Decock, Stefanie Dekeyzer, Peter J F Davie, Charles H J M Fransen, Christopher B Boyko, Gary C B Poore, Enrique Macpherson, Shane T Ahyong, Keith A Crandall, Valentin de Mazancourt, Masayuki Osawa, Tin-Yam Chan, Peter K L Ng, Rafael Lemaitre, Sancia E T van der Meij, Sandro Santos
A new assessment of the global biodiversity of decapod Crustacea (to 31 December 2022) records 17,229 species in 2,550 genera and 203 families. These figures are derived from a well-curated dataset maintained on the online platform DecaNet, a subsidiary of the World Register of Marine Species (WoRMS). Distinct phases are recognised in the discovery process (as measured by species descriptions) corresponding
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Molecular species delimitation reveals hidden endemism in Faxonius placidus (Hagen 1870) (Decapoda: Astacidea: Cambaridae) in southeastern USA J. Crust. Biol. (IF 1.1) Pub Date : 2023-07-25 Parker L Hildreth, Carla R Hurt, Jeffrey W Simmons, Carl E Williams, Brian Leckie
Molecular surveys are critical for understanding species boundaries and evolutionary relationships of North American crayfishes, as traditional morphological characters used for taxonomy frequently misrepresent crayfish diversity. The bigclaw crayfish, Faxonius placidus (Hagen, 1870), is currently described as a widely distributed crayfish that is common throughout the Cumberland, Tennessee, and Lower
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Chicosciencea Bochini, Cunha, Terossi & Almeida, 2020 is not a subjective junior synonym of Microprosthema Stimpson, 1860 (Decapoda: Stenopodidea: Spongicolidae): A response to Goy (2023) J. Crust. Biol. (IF 1.1) Pub Date : 2023-07-11 Gabriel L Bochini, Andressa M Cunha, Mariana Terossi, Alexandre O Almeida
The stenopodidean shrimp Chicosciencea pernambucensis Bochini, Cunha, Terossi & Almeida, 2020 was described as a new genus and species from northeastern Brazil based on morphological and molecular assessments. J. Goy nevertheless proposed that Chicosciencea Bochini, Cunha, Terossi & Almeida, 2020 is a subjective synonym of Microprosthema Stimpson, 1860. We comment on the synonymy and present the alternative
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Beneath the surface: correlates of solitary, paired, and group living in a cryptic burrowing ghost shrimp Trypaea australiensis Dana, 1852 (Decapoda: Axiidea: Calianassidae) J. Crust. Biol. (IF 1.1) Pub Date : 2023-07-11 Renae L Kirby, Marian Y L Wong
Marine organisms, particularly invertebrates, are relatively understudied regarding social structure and behaviour, especially those that are cryptic. While empirically challenging to investigate, these species can provide novel insights into the evolution of sociality given their unique ecology. Our aim was to quantify in-situ the social structure and its underlying correlates in the Australian burrowing
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Grooming and agonistic behaviors in the semi-terrestrial crabs Ocypode quadrata (Fabricius, 1787) and Minuca (Uca) burgersi (Holthuis, 1967) (Decapoda: Brachyura: Ocypodidae) J. Crust. Biol. (IF 1.1) Pub Date : 2023-06-28 Maggie Dakin, Jen L Wortham
Grooming behaviors reduce body fouling and are well documented in crustaceans. There are more detailed laboratory-based grooming studies on fully aquatic crabs compared to semi-terrestrial crabs. By contrast, semi-terrestrial crabs are predicted to have different grooming time budgets than fully aquatic crabs because semi-terrestrial crabs are not constantly submerged in water that can mechanically
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The water flea Moina macrocopa () (Cladocera: Daphniidae) withstands 100,000 × g in a centrifuge for 10 minutes J. Crust. Biol. (IF 1.1) Pub Date : 2023-06-28 Takafumi Ito
The water flea Moina macrocopa (Straus, 1820) survived and did not become pelleted when centrifuged at 21,500 × g for 10 minutes. Five out of six individuals tested swam in the microtube after being centrifuged at 100,000 × g for 10 minutes. It was confirmed that M. macrocopa occurred near the bottom of a 15 ml centrifuge tube on the spoke of a bicycle wheel due to the centrifugal force of 5 × g. This
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The complete mitochondrial genome of the freshwater crab Tzotzilthelphusa villarosalensis Villalobos & Álvarez, 2013 (Brachyura: Decapoda: Pseudothelphusidae: Raddausinae) from Mexico J. Crust. Biol. (IF 1.1) Pub Date : 2023-06-26 Eric G Moreno-Juárez, Andrea Jiménez-Marin, Sandra I Vera-Paz, Fernando Álvarez
We present the complete mitochondrial genome of Tzotzilthelphusa villarosalensisVillalobos & Álvarez, 2013, a freshwater crab from Mexico. This is the first mitochondrial genome reported for the superfamily Pseudothelphusoidea. We performed a de novo assembly from genome skimming reads. The mitochondrial genome of T. villarosalensis has a length of 17,203 bp and its gene topology is similar to other
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Cloning and functional characterization of a TMC-like channel gene and protein in the crayfish Astacus leptodactylus (Eschscholtz, 1823) (Decapoda: Astacidea: Astacidae) J. Crust. Biol. (IF 1.1) Pub Date : 2023-06-24 Kaan Arslan, Berk Saglam, Nazli Coskun Beyatli, Ekim Z Taskiran, Turgut Bastug, Nuhan Purali
Ion channels gated selectively by mechanical stimulus are the key elements of mechanosensation. Several genes have been associated with putative mechanosensitive ion channels or mechanosensitive channel complexes. Transmembrane channel (TMC)-like protein is one of those candidate proteins that have been explored in mammals and several invertebrates. The presence and possible function of TMC related
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Temperature as main driver of the growth of an endemic Philippine freshwater copepod (Copepoda: Calanoida: Diaptomidae) J. Crust. Biol. (IF 1.1) Pub Date : 2023-06-17 Justine R de Leon, Dino T Tordesillas, Sami Souissi, Grei Angelo Cuadrasal, Shea Kathleen P Guinto, Eric Zeus C Rizo, Rey Donne S Papa
We conducted a preliminary analysis on the effects of various physical and chemical parameters on the morphometry and reproductive capacity of the calanoid copepod Filipinodiaptomus insulanus (Wright, 1928), endemic to the Philippines, by proxying clutch size (CS). Specimens and water quality readings were obtained between October 2019 and February 2020 from four sites in northern Philippines. Only
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Influence of lipid extraction in the muscle tissue of the blue crab Callinectes sapidus Rathbun, 1896 (Decapoda: Brachyura: Portunidae) in the determination of δ13C and δ15N J. Crust. Biol. (IF 1.1) Pub Date : 2023-06-16 Rigoberto Rosas-Luis, Nancy Cabanillas-Terán, Luis Ignacio Hernandez-Chavez
Stable isotope analysis of δ13C and δ15N has been used in the description of the trophic ecology in marine organisms. This approach has been applied to various taxa including crustaceans. Pre-treatment of samples before isotope quantification is suggested for tissues with high lipid content, because lipids can affect the isotope concentrations. We focused on the isotope analysis of tissues of the blue
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A new species of crayfish (Decapoda: Astacidea: Cambaridae) from the Cumberland Thrust Block (eastern Kentucky and Tennessee, USA), with notes on the evolution of Cambarus Erichson, 1846 in the Ohio River Basin of the Appalachian Mountains J. Crust. Biol. (IF 1.1) Pub Date : 2023-06-16 Roger F Thoma, James W Fetzner
Cambarus intermontanus n. sp. is described from mountain streams in the Clear Creek basin along the Kentucky/Tennessee border between Cumberland and Pine Mountains on the Cumberland Thrust Block. The new species is morphologically most similar to Cambarus jezerinaci Thoma, 2000. It differs nevertheless from C. jezerinaci most consistently in the tuberculation of the opposable margins of the propodus
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First mitochondrial genomes of Anaspidacea (Malacostraca, Crustacea) and the phylogenetic relationships of mountain shrimps (Anaspides Thomson, 1894) and their relatives within Anaspidesidae J. Crust. Biol. (IF 1.1) Pub Date : 2023-06-09 Christoph G Höpel, Darren Yeo, Shane T Ahyong, Rudolf Meier, Stefan Richter
We present the first complete mitochondrial genomes for Anaspidacea by sequencing 24 specimens from 12 different species in four genera (AnaspidesThomson, 1894; ParanaspidesSmith, 1908; AllanaspidesSwain, Wilson, Hickman & Ong, 1970; and MicraspidesNicholls, 1931). We recovered 20 complete (13 protein coding genes, two ribosomal RNA genes, 22 transfer RNAs), and four partial mitogenomes. The full mitogenomes
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Use of the shuttle box system to determine the effects of hypoxia and food deprivation on the behavioral responses of the rock crab Cancer irroratus Say, 1817 (Decapoda: Brachyura: Cancridae) J. Crust. Biol. (IF 1.1) Pub Date : 2023-06-09 Qiwu Jiang, Iain J McGaw
Food-deprivation state (fed, fasted, starved) affected rock crabs physiological and biochemical responses to hypoxia in Cancer irroratus. Fasted and starved crabs were better adapted to deal with hypoxia than fed animals; however, avoidance behavior is usually considered as the first defense to environmental stressors for decapod crustaceans. We examined the effects of food deprivation on the crab’s
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A new genus of Madagascan freshwater crab to accommodate Hydrothelphusa vencesi Cumberlidge, Marijnissen & Thompson, 2007 (Brachyura: Potamoidea: Deckeniidae), and the description of two new congeners J. Crust. Biol. (IF 1.1) Pub Date : 2023-06-09 Neil Cumberlidge, Julia B Soma, Ellen M Leever, Savel R Daniels
Nheena n. gen. is established to accommodate the Madagascan freshwater crab Hydrothelphusa vencesi Cumberlidge, Marijnissen & Thompson, 2007 that was formerly included in Hydrothelphusa A. Milne-Edwards, 1872. In addition, N. museonatoran. sp. and N. artiareginan. sp. are established and these new taxa are recognized based on a combination of morphological characters and previous molecular data; are
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Variations in the activity of proteolytic and lipidic enzymes of wild and cultured individuals of the prawn Macrobrachium tenellum Smith, 1871 (Decapoda: Caridea: Palaemonidae) fed with different diets J. Crust. Biol. (IF 1.1) Pub Date : 2023-05-31 Nathali Martínez-Salazar, Rodolfo De los Santos-Romero, Carlos Alfonso Alvarez-González, Rafael Martínez-García, Marcelo U Garcia-Guerrero
The freshwater longarm river prawn (Macrobrachium tenellumSmith, 1871) is common in the coastal lagoons and freshwater bodies of the Mexican Pacific region. Its potential for aquaculture has been investigated recently, including evaluating its nutritional needs by investigating the digestive enzymatic activity of wild and culture individuals. We collected wild prawns from three different habitats and
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Canadian records of Branchinecta serrata Rogers, 2006 and its confusion with B. paludosa (Müller, 1788) (Branchiopoda: Anostraca: Branchinectidae), with a key to the B. paludosa species group J. Crust. Biol. (IF 1.1) Pub Date : 2023-05-31 D Christopher Rogers, Ian R Gardiner
Branchinecta serrata Rogers, 2006 was originally thought to be limited to four localities in the central USA. We present new records of this species in prairie pools in central Canada, greatly extending its known distribution. Previous records from Canada were misidentified as the common and widespread B. paludosa (Müller, 1788). We present images emphasizing the differences between the two species
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A new subterranean species of Arisubathynella Park & Eun, 2012 (Crustacea: Bathynellacea: Parabathynellidae) from South Korea, with remarks on the phylogenetic relationships among 15 parabathynellid genera J. Crust. Biol. (IF 1.1) Pub Date : 2023-05-16 Su-Jung Ji, Gi-Sik Min
Parabathynellidae, Arisubathynella pocheonensis. sp. nov. from a hyporheic zone of a stream in South Korea. The new species is morphologically distinguished from its congeners by having five teeth on the incisor process in the mandible, and four teeth on the dentate lobe of male thoracopod VIII. The species description is supplemented with molecular information in the form of 18S rRNA and partial CO1
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Amphipoda from depths exceeding 6,000 meters revisited 60 years on J. Crust. Biol. (IF 1.1) Pub Date : 2023-05-15 Alan J Jamieson, Johanna N J Weston
In the 1950s, the Danish Galathea Expedition undertook one of the first and most comprehensive explorations of our ocean’s hadal zone, depths extending from 6,000 to nearly 11,000 m, and presented a rich collection of the diversity of Amphipoda. The subsequent papers, however, concluded that these established ‘nothing essentially new’ to the existing knowledge of amphipod biology. Since Dahl’s foundational
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The freshwater Brachyura (Decapoda: Potamidae, Gecarcinucidae, Sesarmidae) of the Anambas and Natuna Islands, Kepulauan Riau Province, Indonesia J. Crust. Biol. (IF 1.1) Pub Date : 2023-04-26 Peter K L Ng, Daisy Wowor, Darren C J Yeo
We report on the freshwater crabs of the families Potamidae, Gecarcinucidae, and Sesarmidae in the archipelago of Anambas and Natuna Islands in Indonesia. Five genera (one new) and eight species (four new) are now recorded from the islands. For the Potamidae, a new genus and a new species, Natunamon indonesicumn. sp., is described from Natuna; the taxon has diagnostic characters intermediate between
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A survey of the genes encoding trehalose-metabolism enzymes in crustaceans J. Crust. Biol. (IF 1.1) Pub Date : 2023-04-21 Yuting Huang, Qiong Shi
Trehalose is important in activity, development, and environmental-stress response, especially in invertebrates. It is mainly synthesized by trehalose-6-phosphate synthase (TPS) and trehalose-6-phosphate phosphatase (TPP), and degraded by trehalase (TRE). In the present study, the tps, tpp, and tre were identified from various crustacean species and their phylogeny, structure, network, and transcriptome
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Selective extinction at the end-Cretaceous and appearance of the modern Decapoda J. Crust. Biol. (IF 1.1) Pub Date : 2023-04-18 Carrie E Schweitzer, Rodney M Feldmann
Extinction and origination of genera and families of marine Decapoda at the end of the Cretaceous established the modern fauna. Podotrematous crabs suffered high extinction levels, whereas heterotrematous crabs experienced both extinction and radiation. Anomuran decapods exhibited high extinction levels at the generic but not family level. In general, family extinctions predominantly occurred among
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Validation of the water content of the digestive gland as an indicator of nutritional condition in the American lobster Homarus americanus (H. Milne Edwards, 1837) (Decapoda: Nephropidae) J. Crust. Biol. (IF 1.1) Pub Date : 2023-04-13 Catherine M Couillard, Domynick Maltais, Benoît Bruneau, Natalie Asselin, Stephanie A Boudreau
Simple nutritional condition indicators are needed to provide information on the influence of ecosystem changes on the populations of the American lobster Homarus americanus (H. Milne Edwards, 1837) on various timescales. This study validates the use of the water content (% wet mass) of the digestive gland as an indicator of nutritional condition in the lobster (carapace length 65–127 mm) by assessing
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Gene flow with the help of sea turtles: phylogeography of the epibiont barnacle Chelonibia testudinaria (Linnaeus, 1758) (Crustacea: Cirripedia: Chelonibiidae) from the Persian Gulf J. Crust. Biol. (IF 1.1) Pub Date : 2023-03-16 Adnan Shahdadi
Chelonibia testudinaria (Linnaeus, 1758) is a globally distributed epibiont barnacle using different hosts, including sea turtles and portunid crabs. Previous phylogenetic analyses have recovered three distinct clades for this species corresponding to the Atlantic, Eastern Pacific, and Indo-West Pacific regions. The present study of the genetic diversity of this species in the Persian Gulf (northwestern
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Gene cloning, expression pattern, and response to dietary total lipids and phospholipids of hormone-sensitive lipase (HSL) in the Oriental river prawn Macrobrachium nipponense De Haan, 1849 (Decapoda: Caridea: Palaemonidae) J. Crust. Biol. (IF 1.1) Pub Date : 2023-03-11 Qianqian Wang, Chunfang Cai, Junbiao Zhang, Dianzhang Shui, Guangtong Cui, Zhi Wang, Shengjie Ren, Ping Wu, Yuantu Ye
Hormone-sensitive lipase (HSL) is an important regulator of cellular lipid homeostasis and catalyzes the hydrolysis of stored triacylglycerol. We identified and cloned for the first time the full-length cDNA sequence of HSL of the prawn Macrobrachium nipponense De Haan, 1849 [De Haan, 1833–1850] from a hepatopancreas cDNA library. The complete HSL sequence is 3,575 bp and encoded a 785 amino acid peptide
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Food and feeding strategies of the deep-sea shrimp Heterocarpus woodmasoni, Alcock 1901 (Decapoda: Pandalidae) from southwestern India J. Crust. Biol. (IF 1.1) Pub Date : 2023-03-08 Gayathri Ambatt Padmanabhan, Rekha Devi Chakraborty, Sreesanth Lakshman
Diet composition and feeding strategies of deep-sea caridean shrimp Heterocarpus woodmasoniAlcock,1901 are described from gut contents of 4,116 specimens collected from the southwestern coast of India. Knowledge of the species diet plays a prime effect on its biological aspects and its role in the ecological energetics of the community. All the analyses were performed in accordance with ecological
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Phylogenetic analysis of problematic Asian species of Artemia Leach, 1819 (Crustacea, Anostraca), with the descriptions of two new species J. Crust. Biol. (IF 1.1) Pub Date : 2023-03-08 Alireza Asem, Chaojie Yang, Amin Eimanifar, Francisco Hontoria, Inmaculada Varó, Farnaz Mahmoudi, Chun-Zheng Fu, Chun-Yang Shen, Nasrullah Rastegar-Pouyani, Pei-Zheng Wang, Weidong Li, Liping Yao, Xinyu Meng, Ya-Ting Dan, D Christopher Rogers, Gonzalo Gajardo
Species of Artemia are regionally endemic branchiopod crustaceans composed of sexual species and parthenogenetic lineages, and represent an excellent model for studying adaptation and speciation to extreme and heterogeneous hypersaline environments. We tested hypotheses of whether populations from the Tibetan Plateau belong to A. tibetianaAbatzopoulos, Zhang & Sorgeloos,1998 and whether a population
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Cryptic diversity in endoparasitic isopods (Bopyroidea: Entoniscidae) from mud crabs (Panopeidae) along the Atlantic coast of North America, with the description of a new genus and new species as revealed by molecular and larval characters: the long and the short of it J. Crust. Biol. (IF 1.1) Pub Date : 2023-03-08 Jason D Williams, Christopher B Boyko, Carolyn K Tepolt, April M H Blakeslee
Although intertidal crabs from the western Atlantic coast are relatively well studied for some parasite fauna, their parasitic isopods are poorly known. We document two endoparasitic entoniscids (Cancrion carolinusPearse & Walker, 1939 and Cryptocancrion brevibrachiumn. gen., n. sp.) from mud (Brachyura: Panopeidae) and stone (Brachyura: Menippidae) crabs based on molecular and morphological data,
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Is salt the solution? Interactions between trace-metal uptake and salinity in the freshwater crab Potamonautes warreni Calman, 1918 (Decapoda: Brachyura: Potamonautidae) J. Crust. Biol. (IF 1.1) Pub Date : 2023-03-04 Susan K Glendinning, Andre Vosloo
Crustaceans inhabiting freshwater are more vulnerable to increased loading with dissolved trace metals than those from more saline conditions for both physicochemical and physiological reasons. Potamonautes warreni (Calman, 1918) is a true freshwater crab inhabiting rivers in proximity to mining activities in South Africa. In order to assess whether the uptake of zinc (Zn2+) and cadmium (Cd2+) were
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Effects of bioturbation by the fiddler crab Leptuca speciosa (Ives, 1891) (Decapoda: Brachyura: Ocypodidae) on mangrove peat in Barnes Sound, Florida, USA J. Crust. Biol. (IF 1.1) Pub Date : 2023-02-23 Samuel H Neely
Bioturbation, which includes burrowing and foraging behaviors, is an important component of the functional role of fiddler crabs (Brachyura, Ocypodidae) within mangrove forests because it modifies sediment properties and composition of mangrove substrates. In this study, fiddler-crab population density and burrow architecture were measured to evaluate the influence of bioturbation by the fiddler crab
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Non-visual functions of opsins in Crustacea: a review J. Crust. Biol. (IF 1.1) Pub Date : 2023-02-23 José R Pérez-Calderón, Alejandro Botello, Jorge A Pérez-León
Opsins are transmembrane proteins that have a covalent bond with a chromophore 11-cis-retinal in the intracellular region, opsins transiently bind to a G protein, which in turn is alternatively coupled to GTP or GDP. These characteristics allow opsins to function as photopigments and, after reacting with light, they launch the cascade of intracellular communication processes known as phototransduction
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An invasive species revisited: Continued displacement of native crayfishes by the invasive Faxonius rusticus (Girard, 1852) (Decapoda: Astacidea: Cambaridae) in Illinois after 25 years J. Crust. Biol. (IF 1.1) Pub Date : 2023-02-16 Dusty A Swedberg, Christopher A Taylor, Molly C Carlson
Since 1995 Faxonius rusticus (Girard, 1852) has continued to expand its range in Illinois, USA and cause displacement of native crayfishes. We revisit five historic collection sites for F. rusticus made by C.A. Taylor and M. Redmer in 1995 and compare densities of F. rusticus with native sympatric crayfish species to document changes over the past 25 years. We additionally compiled data from vouchered
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Insights on the evolution and conservation of Appalachian burrowing crayfishes, with the description of a new species of Cambarus Erichson, 1846 (Decapoda: Astacidea: Cambaridae) J. Crust. Biol. (IF 1.1) Pub Date : 2023-02-10 Roger Thoma, Carla Hurt, Carl Williams, David Withers
A new species of crayfish, Cambarus nyxn. sp., is described from the Kentucky/Tennessee border in the Dissected Appalachian Plateau sub-ecoregion of the US. Of the recognized species of Cambarus Erichson, 1846, it is morphologically most similar to Cambarus deweesae Bouchard & Etnier, 1979, found primarily in the Southern Limestone/Dolomite Valleys and Low Rolling Hills sub-ecoregion. Cambarus nyxn