Pleistocene population expansions of Antarctic seals
We sequenced a portion (c. 475 bp) of the mitochondrial control region of three species of Antarctic phocid carnivores (Weddell seal, Leptonychotes weddellii, N = 181; crabeater seal, Lobodon carcinophaga, N = 143; and Ross seal, Ommatophoca rossii, N = 41) that live seasonally or permanently in the...
Published in: | Molecular Ecology |
---|---|
Main Authors: | , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Wiley-Blackwell Publishing
2009
|
Subjects: | |
Online Access: | https://espace.library.uq.edu.au/view/UQ:382913 |
id |
ftunivqespace:oai:espace.library.uq.edu.au:UQ:382913 |
---|---|
record_format |
openpolar |
spelling |
ftunivqespace:oai:espace.library.uq.edu.au:UQ:382913 2023-05-15T13:39:41+02:00 Pleistocene population expansions of Antarctic seals Curtis, Caitlin Stewart, Brent S. Karl, Stephen A. 2009-05-01 https://espace.library.uq.edu.au/view/UQ:382913 eng eng Wiley-Blackwell Publishing doi:10.1111/j.1365-294X.2009.04166.x issn:0962-1083 issn:1365-294X orcid:0000-0002-6284-284X OPP98-16011 Genetically effective population size Mitochondrial DNA Pinniped Theta 1105 Ecology Evolution Behavior and Systematics 1311 Genetics Journal Article 2009 ftunivqespace https://doi.org/10.1111/j.1365-294X.2009.04166.x 2020-10-06T00:50:01Z We sequenced a portion (c. 475 bp) of the mitochondrial control region of three species of Antarctic phocid carnivores (Weddell seal, Leptonychotes weddellii, N = 181; crabeater seal, Lobodon carcinophaga, N = 143; and Ross seal, Ommatophoca rossii, N = 41) that live seasonally or permanently in the fast ice and seasonal pack ice of the western Amundsen and Ross seas of western Antarctica. We resolved 251 haplotypes with a haplotype diversity of 0.98 to 0.99. Bayesian estimates of from the program LAMARC ranged from 0.075 for Weddell seals to 0.576 for crabeater seals. We used the values of theta to estimate female effective population sizes (N), which were 40 700 to 63 000 for Weddell seals, 44 400 to 97 800 for Ross seals, and 358 500 to 531 900 for crabeater seals. We used mismatch distributions to test for historical population size expansions. Weddell seals and crabeater seals had significant, unimodal mean pairwise difference distributions (P = 0.56 and 0.36, respectively), suggesting that their populations expanded suddenly around 731 000 years ago (Weddell seals) and around 1.6 million years ago (crabeater seals). Both of these expansions occurred during times of intensified glaciations and may have been fostered by expanding pack ice habitat. Article in Journal/Newspaper Antarc* Antarctic Antarctica Crabeater Seal Crabeater Seals Ross Seal Weddell Seal Weddell Seals The University of Queensland: UQ eSpace Antarctic Weddell Molecular Ecology 18 10 2112 2121 |
institution |
Open Polar |
collection |
The University of Queensland: UQ eSpace |
op_collection_id |
ftunivqespace |
language |
English |
topic |
Genetically effective population size Mitochondrial DNA Pinniped Theta 1105 Ecology Evolution Behavior and Systematics 1311 Genetics |
spellingShingle |
Genetically effective population size Mitochondrial DNA Pinniped Theta 1105 Ecology Evolution Behavior and Systematics 1311 Genetics Curtis, Caitlin Stewart, Brent S. Karl, Stephen A. Pleistocene population expansions of Antarctic seals |
topic_facet |
Genetically effective population size Mitochondrial DNA Pinniped Theta 1105 Ecology Evolution Behavior and Systematics 1311 Genetics |
description |
We sequenced a portion (c. 475 bp) of the mitochondrial control region of three species of Antarctic phocid carnivores (Weddell seal, Leptonychotes weddellii, N = 181; crabeater seal, Lobodon carcinophaga, N = 143; and Ross seal, Ommatophoca rossii, N = 41) that live seasonally or permanently in the fast ice and seasonal pack ice of the western Amundsen and Ross seas of western Antarctica. We resolved 251 haplotypes with a haplotype diversity of 0.98 to 0.99. Bayesian estimates of from the program LAMARC ranged from 0.075 for Weddell seals to 0.576 for crabeater seals. We used the values of theta to estimate female effective population sizes (N), which were 40 700 to 63 000 for Weddell seals, 44 400 to 97 800 for Ross seals, and 358 500 to 531 900 for crabeater seals. We used mismatch distributions to test for historical population size expansions. Weddell seals and crabeater seals had significant, unimodal mean pairwise difference distributions (P = 0.56 and 0.36, respectively), suggesting that their populations expanded suddenly around 731 000 years ago (Weddell seals) and around 1.6 million years ago (crabeater seals). Both of these expansions occurred during times of intensified glaciations and may have been fostered by expanding pack ice habitat. |
format |
Article in Journal/Newspaper |
author |
Curtis, Caitlin Stewart, Brent S. Karl, Stephen A. |
author_facet |
Curtis, Caitlin Stewart, Brent S. Karl, Stephen A. |
author_sort |
Curtis, Caitlin |
title |
Pleistocene population expansions of Antarctic seals |
title_short |
Pleistocene population expansions of Antarctic seals |
title_full |
Pleistocene population expansions of Antarctic seals |
title_fullStr |
Pleistocene population expansions of Antarctic seals |
title_full_unstemmed |
Pleistocene population expansions of Antarctic seals |
title_sort |
pleistocene population expansions of antarctic seals |
publisher |
Wiley-Blackwell Publishing |
publishDate |
2009 |
url |
https://espace.library.uq.edu.au/view/UQ:382913 |
geographic |
Antarctic Weddell |
geographic_facet |
Antarctic Weddell |
genre |
Antarc* Antarctic Antarctica Crabeater Seal Crabeater Seals Ross Seal Weddell Seal Weddell Seals |
genre_facet |
Antarc* Antarctic Antarctica Crabeater Seal Crabeater Seals Ross Seal Weddell Seal Weddell Seals |
op_relation |
doi:10.1111/j.1365-294X.2009.04166.x issn:0962-1083 issn:1365-294X orcid:0000-0002-6284-284X OPP98-16011 |
op_doi |
https://doi.org/10.1111/j.1365-294X.2009.04166.x |
container_title |
Molecular Ecology |
container_volume |
18 |
container_issue |
10 |
container_start_page |
2112 |
op_container_end_page |
2121 |
_version_ |
1766122165800796160 |