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Audzijonyte, Asta; Krylova, Elena M; Sahling, Heiko; Vrijenhoek, Robert C (2012): (Table S1) Molecular analyses and morphological comparisons of deep-sea clams. PANGAEA,, Supplement to: Audzijonyte, A et al. (2012): Molecular taxonomy reveals broad trans-oceanic distributions and high species diversity of deep-sea clams (Bivalvia: Vesicomydae: Pliocardiinae) in chemosynthetic environments. Systematics and Biodiversity, 10, 403-415,

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Large vesicomyid clams are common inhabitants of sulphidic deep-sea habitats such as hydrothermal vents, hydrocarbon seeps and whale-falls. Yet, the species- and genus-level taxonomy of these diverse clams has been unstable due to insufficiencies in sampling and absence of detailed taxonomic studies that would consistently compare molecular and morphological characters. To clarify uncertainties about species-level assignments, we examined DNA sequences from mitochondrial cytochrome-c-oxidase subunit I (COI) in conjunction with morphological characters. New and published COI sequences were used to create a molecular database for 44 unique evolutionary lineages corresponding to species. Overall, the congruence between molecular and morphological characters was good. Several discrepancies due to synonymous species designations were recognized, and acceptable species names were rectified with published COI sequences in cases where morphological specimens were available. We identified seven species with trans-Pacific distributions, and two species with Indo-Pacific distributions. Presently, 27 species have only been documented from one region, which might reflect limited ranges, or insufficient geographical sampling. Vesicomyids exhibit the greatest species diversity along the northwest Pacific ridge systems and in the eastern Pacific, along the western America margin, where depth zonation typically results in segregation of closely related species. The broad distributions of several vesicomyid species suggest that their required chemosynthetic habitats might be more common than previously recognized and occur along most continental margins.
Median Latitude: 32.353502 * Median Longitude: -148.817131 * South-bound Latitude: -18.610000 * West-bound Longitude: 12.380000 * North-bound Latitude: 57.460000 * East-bound Longitude: -44.980000
Minimum ELEVATION: -6370 m a.s.l. * Maximum ELEVATION: m a.s.l.
G1: Group-1 (gigas-group) G2: Group-2 (Calyptogena) G3: Group-3 (Abyssogena) G4: Group-4 (paraphyletic)
#NameShort NameUnitPrincipal InvestigatorMethod/DeviceComment
1GroupGroupAudzijonyte, Asta
2Taxon/taxaTaxaAudzijonyte, Asta
3Sampling dateSampling dateAudzijonyte, AstaYear sampled
4HabitatHabitatAudzijonyte, Asta
5Cruise/expeditionExpeditionAudzijonyte, AstaCruise/Vehicle
6Sample code/labelSample labelAudzijonyte, AstaDive/sample No.
7Area/localityAreaAudzijonyte, AstaLocality
8Area/localityAreaAudzijonyte, AstaRidge system or continental margin
11ELEVATIONElevationm a.s.l.Geocode
12Elevation 2Elev2m a.s.l.Audzijonyte, Astato
13Number of mitochondrial cytochrome-c-oxidase subunit I sequencesNo COI seqAudzijonyte, AstaNo. COI sequences examined in this study
14Accession numberAccess NoAudzijonyte, AstaSequences in the reference database
15SpeciesSpeciesAudzijonyte, AstaSpecimens studied for morphology
16MorphologyMorphologyAudzijonyte, AstaMorphological diagnosis
17Accession numberAccess NoAudzijonyte, AstaPreviously published COI sequences and identification used
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