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Lissarca notorcadensis BAS CAML
Citation
Linse,K., Cope,T., Lorz,A.-N. and Sands,C. Is the Scotia Sea a center of Antarctic marine diversification? Evidence of cryptic speciation in the circum-Antarctic bivalve Lissarca notorcadensis (Arcoidea: Philobryidae) Polar Biology 30( 8): 1059-106, 2006 https://doi.org/10.15468/dbd1m2
Contact: Linse, Katrin
Access data
Archived data
Availability: Creative Commons License This dataset is licensed under a Creative Commons Attribution 4.0 International License.
Description
The bivalve Lissarca notorcadensis is one of the most abundant species in Antarctic waters and has colonised the entire Antarctic shelf and Scotia Sea Islands. Its brooding reproduction, low dispersal capabilities and epizoic lifestyle predict limited gene flow between geographically isolated populations. Relationships between specimens from seven regions in the Southern Ocean and outgroups were assessed with nuclear 28S rDNA and mitochondrial cytochrome oxidase subunit I (COI) genes. more

The 28S dataset indicate that while Lissarca appears to be a monophyletic genus, there is polyphyly between the Limopsidae and Philobryidae. Thirteen CO1 haplotypes were found, mostly unique to the sample regions, and two distinct lineages were distinguished. Specimens from the Weddell and Ross Sea form one lineage while individuals from the banks and islands of the Scotia Sea form the other. Within each lineage, further vicariance was observed forming six regionally isolated groups. Our results provide initial evidence for reproductively isolated populations of L. notorcadensis. The islands of the Scotia Sea appear to act as centres of speciation in the Southern Ocean.
Scope
Themes:
Biology > Invertebrates
Keywords:
Marine/Coastal, Cytochrome oxidase, Data, Marine Genomics, Antarctica, Bivalvia
Geographical coverage
Antarctica [Marine Regions]
Temporal coverage
2006
Unknown
Taxonomic coverage
Bivalvia [WoRMS]
Parameters
Genetic DNA sequence
Occurrence of biota
Contributors
Natural Environment Research Council; British Antarctic Survey (BAS), more, data creator
Linse, Katrin
Related datasets
Published in:
AntOBIS: Antarctic Ocean Biodiversity Information System, more
(Partly) included in:
RAS: Register of Antarctic Species, more
Dataset status: Completed
Data type: Data
Data origin: Literature research
Metadatarecord created: 2010-02-11
Information last updated: 2019-04-09
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