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Biodiversity of lacustrine Antarctic crustaceans: local and regional genetic diversity of copepods and cladocerans

Created 23/06/2025

Updated 23/06/2025

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The aim of the study was to characterise the genetic biodiversity of populations of the copepod Paralabidocera antarctica and the cladoceran Daphniopsis studeri in the Australian Antarctic Territory. Sampling was finalised during November and December 2000. Daphniopsis studeri were sampled from freshwater lakes in the Vestfold and Larsemann Hills, and from small ponds on Heard Island. Paralabidocera antarctica were collected from saline lakes, fjords and embayments around the Vestfold Hills. Each population was analysed at 16 allozyme loci using cellulose acetate electrophoresis. Allozyme data were recorded as multilocus genotypes for each individual. The observed number of multi-locus genotypes were tested against expected values to determine whether populations of Daphniopsis studeri reproduce by obligate or cyclic parthenogenesis. Geographic genetic structure of the crustacean populations was assessed using genetic distance measures and cluster analysis. Local and regional gene flow was estimated using Fst and multivariate statistics. By using genetic tools to measure indirectly dispersal and gene flow among populations with each species, we hope to reconstruct the history of these species in Antarctica and to determine the relative significance of historical versus contemporary ecological conditions.

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Field Value
Title Biodiversity of lacustrine Antarctic crustaceans: local and regional genetic diversity of copepods and cladocerans
Language eng
Licence Not Specified
Landing Page https://data.gov.au/data/dataset/4fddfaf2-8737-4317-a5a7-a12a865d11ef
Contact Point
Australian Ocean Data Network
metadata@aad.gov.au
Reference Period 01/06/1994 - 31/12/2000
Geospatial Coverage
Map data © OpenStreetMap contributors
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Data Portal Australian Oceans Data Network

Data Source

This dataset was originally found on Australian Oceans Data Network "Biodiversity of lacustrine Antarctic crustaceans: local and regional genetic diversity of copepods and cladocerans". Please visit the source to access the original metadata of the dataset:
https://catalogue.aodn.org.au/geonetwork/srv/eng/csw/dataset/biodiversity-of-lacustrine-antarctic-crustaceans-local-and-regional-genetic-diversity-of-copepo