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. 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.
Data Records
The data in this occurrence resource has been published as a Darwin Core Archive (DwC-A), which is a standardized format for sharing biodiversity data as a set of one or more data tables. The core data table contains 64 records.
This IPT archives the data and thus serves as the data repository. The data and resource metadata are available for download in the downloads section. The versions table lists other versions of the resource that have been made publicly available and allows tracking changes made to the resource over time.
Versions
The table below shows only published versions of the resource that are publicly accessible.
How to cite
Researchers should cite this work as follows:
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
Rights
Researchers should respect the following rights statement:
The publisher and rights holder of this work is SCAR - AntOBIS. This work is licensed under a Creative Commons Attribution (CC-BY 4.0) License.
GBIF Registration
This resource has been registered with GBIF, and assigned the following GBIF UUID: 7b5fa9de-f762-11e1-a439-00145eb45e9a. SCAR - AntOBIS publishes this resource, and is itself registered in GBIF as a data publisher endorsed by Ocean Biodiversity Information System.
Keywords
Occurrence
External data
The resource data is also available in other formats
| Online dataset | http://www.iobis.org/mapper/?dataset=2404 US-ASCII darwincore |
|---|---|
| Metadata | http://www.vliz.be/imis/imis.php?module=dataset&dasid=2335 UTF-8 darwincore |
Contacts
- Originator ●
- Point Of Contact
- Metadata Provider
Geographic Coverage
Antarctica
| Bounding Coordinates | South West [-73, -171], North East [-52, -60] |
|---|
Taxonomic Coverage
Lissarca notorcadensis urn:lsid:marinespecies.org:taxname:51 AphiaID: 197241
| Phylum | Mollusca [Molluscs] |
|---|---|
| Species | Lissarca notorcadensis Melvill & Standen, 1907 |
Temporal Coverage
| Start Date | 2006-01-01 |
|---|
Additional Metadata
marine, harvested by iOBIS
| Alternative Identifiers | 7b5fa9de-f762-11e1-a439-00145eb45e9a |
|---|---|
| https://ipt.biodiversity.aq/resource?r=rachel_lissarca_notorcadensis |