Skip to main content

IMIS

A new integrated search interface will become available in the next phase of marineinfo.org.
For the time being, please use IMIS to search available data

 

[ report an error in this record ]basket (0): add | show Print this page

Circumantarctic distribution in Southern Ocean benthos? A genetic test using the genus Macroscapha (Crustacea, Ostracoda) as a model
Brandao, S.; Sauer, J.; Schön, I. (2010). Circumantarctic distribution in Southern Ocean benthos? A genetic test using the genus Macroscapha (Crustacea, Ostracoda) as a model. Mol. Phylogenet. Evol. 55(3): 1055-1069. https://dx.doi.org/10.1016/j.ympev.2010.01.014
In: Molecular Phylogenetics and Evolution. Elsevier: Orlando, FL. ISSN 1055-7903; e-ISSN 1095-9513, more
Peer reviewed article  

Available in  Authors 

Keyword
Author keywords
    Ostracoda; Southern Ocean; Genetics; Zoogeography; Eurybathy;Circumantarctic distribution; COI; ITS

Authors  Top 
  • Brandao, S., more
  • Sauer, J.
  • Schön, I., more

Abstract
    The ostracod genus Macroscapha is used as a model to test theories predicting circumantarctic distribution of benthic species from the Southern Ocean. Earlier works on Antarctic Ostracoda reported five circumantarctic and/or eurybathic Macroscapha species. However, a recent taxonomic revision used a narrow morphological species definition and subdivided these five species into 20 morphospecies. Most of these narrowly defined species showed restricted depth and geographical distribution. Here, genetic markers are used to investigate the geographic and bathymetric distribution of seven species of the genus Macroscapha. The genetic results (especially COI, but partially also ITS) support more restricted geographical ranges and indicate more restricted depth distributions. Our results therefore corroborate the usefulness of a narrow morphological species definition. Our dataset also indicates that the ‘genetic entities’ of one species group (i.e. ‘Mh. tensa-opaca’) are not only geographically but also bathymetrically segregated. For that reason, a re-evaluation of the prevailing theories on the circumantarctic and eurybathic distribution of Southern Ocean benthic species is suggested.

All data in the Integrated Marine Information System (IMIS) is subject to the VLIZ privacy policy Top | Authors