{"key":"643eaefa-431c-40cb-bb02-efdd3112e9f2","installationKey":"da87027f-12b5-442f-b132-0f6f25acfd53","publishingOrganizationKey":"9abe4949-29aa-450e-b767-b2788f66e04d","doi":"10.15468/k3we2d","version":"1.1","external":false,"numConstituents":0,"type":"OCCURRENCE","title":"Occurrence of the chemosymbiotic bivalve Calyptogena pacifica (Vesicomyidae) in the Western Bering Sea","description":"<p> The bivalve mollusc Calyptogena pacifica (Vesicomyidae: Pliocardiinae) is widely distributed in reducing environments at the bathyal depths in the North Pacific. In the Bering Sea, the species inhabits methane seeps on the Koryak slope and hydrothermal vents on the Piip Volcano separated by a distance of 800 km.</p>","language":"eng","citation":{"text":"Belov D, Kremenetskaia A, Rybakova E, Krylova E (2025). Occurrence of the chemosymbiotic bivalve Calyptogena pacifica (Vesicomyidae) in the Western Bering Sea. Version 1.1. Shirshov Institute of Oceanology, Russian Academy of Sciences. 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Slope (60.111519 N, 171.525023 E) and Piip Volcano (55.382300 N, 167.261100 E)","boundingBox":{"minLatitude":55.282,"maxLatitude":61.172,"minLongitude":167.261,"maxLongitude":175.449,"globalCoverage":false}}],"temporalCoverages":[],"keywordCollections":[{"thesaurus":"GBIF Dataset Type Vocabulary: http://rs.gbif.org/vocabulary/gbif/dataset_type_2015-07-10.xml","keywords":["Calyptogena pacifica","Occurrence","chemosynthesis-based communities"]}],"project":{"title":"Ice and flame are not so different from one another\"?: comparative aspects of fauna composition and community structure of chemosynthetic habitats of different types and population connectivity on the example of cold methane seeps and hot hydrothermal vents of the Bering Sea","awards":[],"relatedProjects":[]},"samplingDescription":{"studyExtent":"This study focuses on the benthic ecosystems of the Bering Sea, specifically the Koryak Slope seeps and the hydrothermal vent of Piip Volcano, during research expeditions in 2016 and 2018. The taxonomic scope is limited to the chemosymbiotic bivalve mollusk Calyptogena pacifica, an obligate species typical of reducing habitats (hydrothermal vents and cold seeps).\n\nData were collected using the ROV Comanche 18 (Remotely Operated Vehicle) to sample populations for population genetic analysis. The research aimed to assess genetic diversity and connectivity among C. pacifica colonies in these deep-sea environments, contributing to the understanding of adaptation and resilience in specialized vent fauna.\n\nThe geographic extent covers key hydrothermal vent and cold seep systems in the western Bering Sea. This study provides insights into the biogeography and ecology of an endemic chemosynthetic species in a geologically active region.","sampling":"A total of 178 specimens of the chemosymbiotic bivalve Calyptogena pacifica were collected during two expeditions (2016, 2018) in the Bering Sea using the ROV Comanche 18:\n\n129 specimens from the Koryak Slope\n\n49 specimens from Piip Volcano hydrothermal vent field","methodSteps":["The collected samples (n=178) were immediately placed in cold ethanol and stored in freezers at -20°C. Initial sorting and labeling of the samples were performed, followed by genetic analysis for population studies. Taxonomic affiliation was then verified, and the data were entered into a database with reference to the collection coordinates."]},"countryCoverage":[],"collections":[],"dataDescriptions":[],"dataLanguage":"eng","pubDate":"2025-06-07T00:00:00.000+00:00","maintenanceUpdateFrequency":"UNKOWN","maintenanceDescription":"","license":"http://creativecommons.org/licenses/by-nc/4.0/legalcode","dwca":{"coreType":"http://rs.tdwg.org/dwc/terms/Occurrence","extensions":[],"modified":"2026-07-12T12:30:30.237+00:00"},"approximateCounts":{"occurrenceCount":178}}