Genetically effective population sizes of Antarctic seals estimated from nuclear genes

Curtis, Caitlin, Stewart, Brent S. and Karl, Stephen A. (2011) Genetically effective population sizes of Antarctic seals estimated from nuclear genes. Conservation Genetics, 12 6: 1435-1446. doi:10.1007/s10592-011-0241-x


Author Curtis, Caitlin
Stewart, Brent S.
Karl, Stephen A.
Title Genetically effective population sizes of Antarctic seals estimated from nuclear genes
Journal name Conservation Genetics   Check publisher's open access policy
ISSN 1566-0621
1572-9737
Publication date 2011-12
Year available 2011
Sub-type Article (original research)
DOI 10.1007/s10592-011-0241-x
Open Access Status Not Open Access
Volume 12
Issue 6
Start page 1435
End page 1446
Total pages 12
Place of publication Dordrecht, Netherlands
Publisher Springer Netherlands
Language eng
Formatted abstract
We analyzed eight nuclear microsatellite loci in three species of Antarctic seals; Weddell seal (Leptonychotes weddellii; mean N = 163), crabeater seal (Lobodon carcinophaga; 138) and Ross seal (Ommatophoca rossii; 35). We estimated genetic diversity (Θ) and effective population size (NE) for each species. Autosomal microsatellite based NE estimates were 151,200 for Weddell seals, 880,200 for crabeater seals, and 254,500 for Ross seals. We screened one X-linked microsatellite (Lw18), which yielded similar NE estimates to the autosomal loci for all species except the Ross seals, where it was considerably larger (~103 times). Microsatellite NE estimates were comparable with previously published NE estimates from mitochondrial DNA, but both are substantially lower than direct estimates of population size in all species except the Ross seals. The ratio of maternally versus biparentally derived estimates of NE for Ross seals was not consistent with the hypothesis that they are a polygynous species. We found no sign of a recent, sustained genetic bottleneck in any of the species.
Keyword Leptonychotes weddellii
Lobodon carcinophaga
Microsatellite
Ommatophoca rossii
Phocid carnivore
Theta
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Non-UQ

Document type: Journal Article
Sub-type: Article (original research)
Collection: School of Biological Sciences Publications
 
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Created: Wed, 23 Mar 2016, 15:22:38 EST by Caitlin Curtis on behalf of Learning and Research Services (UQ Library)