Paternity assignment and demographic closure in the New Zealand southern right whale
Abstract The identification and characterization of reproductively isolated subpopulations or ‘stocks’ are essential for effective conservation and management decisions. This can be difficult in vagile marine species like marine mammals. We used paternity assignment and ‘gametic recapture’ to examin...
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crwiley:10.1111/j.1365-294x.2012.05676.x 2024-06-23T07:56:57+00:00 Paternity assignment and demographic closure in the New Zealand southern right whale CARROLL, EMMA L. CHILDERHOUSE, SIMON J. CHRISTIE, MARK LAVERY, SHANE PATENAUDE, NATHALIE ALEXANDER, ALANA CONSTANTINE, ROCHELLE STEEL, DEBBIE BOREN, LAURA SCOTT BAKER, C. 2012 http://dx.doi.org/10.1111/j.1365-294x.2012.05676.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1365-294X.2012.05676.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1365-294X.2012.05676.x en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor http://doi.wiley.com/10.1002/tdm_license_1.1 Molecular Ecology volume 21, issue 16, page 3960-3973 ISSN 0962-1083 1365-294X journal-article 2012 crwiley https://doi.org/10.1111/j.1365-294x.2012.05676.x 2024-06-04T06:36:56Z Abstract The identification and characterization of reproductively isolated subpopulations or ‘stocks’ are essential for effective conservation and management decisions. This can be difficult in vagile marine species like marine mammals. We used paternity assignment and ‘gametic recapture’ to examine the reproductive autonomy of southern right whales ( Eubalaena australis ) on their New Zealand (NZ) calving grounds. We derived DNA profiles for 34 mother–calf pairs from skin biopsy samples, using sex‐specific markers, 13 microsatellite loci and mtDNA haplotypes. We constructed DNA profiles for 314 adult males, representing 30% of the census male abundance of the NZ stock, previously estimated from genotypic mark‐recapture modelling to be 1085 (95% CL 855, 1416). Under the hypothesis of demographic closure and the assumption of equal reproductive success among males, we predict: (i) the proportion of paternities assigned will reflect the proportion of the male population sampled and (ii) the gametic mark–recapture (GMR) estimate of male abundance will be equivalent to the census male estimate for the NZ stock. Consistent with these predictions, we found that the proportion of assigned paternities equalled the proportion of the census male population size sampled. Using the sample of males as the initial capture, and paternity assignment as the recapture, the GMR estimate of male abundance was 1001 (95% CL 542, 1469), similar to the male census estimate. These findings suggest that right whales returning to the NZ calving ground are reproductively autonomous on a generational timescale, as well as isolated by maternal fidelity on an evolutionary timescale, from others in the Indo‐Pacific region. Article in Journal/Newspaper Southern Right Whale Wiley Online Library New Zealand Pacific Molecular Ecology 21 16 3960 3973 |
institution |
Open Polar |
collection |
Wiley Online Library |
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crwiley |
language |
English |
description |
Abstract The identification and characterization of reproductively isolated subpopulations or ‘stocks’ are essential for effective conservation and management decisions. This can be difficult in vagile marine species like marine mammals. We used paternity assignment and ‘gametic recapture’ to examine the reproductive autonomy of southern right whales ( Eubalaena australis ) on their New Zealand (NZ) calving grounds. We derived DNA profiles for 34 mother–calf pairs from skin biopsy samples, using sex‐specific markers, 13 microsatellite loci and mtDNA haplotypes. We constructed DNA profiles for 314 adult males, representing 30% of the census male abundance of the NZ stock, previously estimated from genotypic mark‐recapture modelling to be 1085 (95% CL 855, 1416). Under the hypothesis of demographic closure and the assumption of equal reproductive success among males, we predict: (i) the proportion of paternities assigned will reflect the proportion of the male population sampled and (ii) the gametic mark–recapture (GMR) estimate of male abundance will be equivalent to the census male estimate for the NZ stock. Consistent with these predictions, we found that the proportion of assigned paternities equalled the proportion of the census male population size sampled. Using the sample of males as the initial capture, and paternity assignment as the recapture, the GMR estimate of male abundance was 1001 (95% CL 542, 1469), similar to the male census estimate. These findings suggest that right whales returning to the NZ calving ground are reproductively autonomous on a generational timescale, as well as isolated by maternal fidelity on an evolutionary timescale, from others in the Indo‐Pacific region. |
format |
Article in Journal/Newspaper |
author |
CARROLL, EMMA L. CHILDERHOUSE, SIMON J. CHRISTIE, MARK LAVERY, SHANE PATENAUDE, NATHALIE ALEXANDER, ALANA CONSTANTINE, ROCHELLE STEEL, DEBBIE BOREN, LAURA SCOTT BAKER, C. |
spellingShingle |
CARROLL, EMMA L. CHILDERHOUSE, SIMON J. CHRISTIE, MARK LAVERY, SHANE PATENAUDE, NATHALIE ALEXANDER, ALANA CONSTANTINE, ROCHELLE STEEL, DEBBIE BOREN, LAURA SCOTT BAKER, C. Paternity assignment and demographic closure in the New Zealand southern right whale |
author_facet |
CARROLL, EMMA L. CHILDERHOUSE, SIMON J. CHRISTIE, MARK LAVERY, SHANE PATENAUDE, NATHALIE ALEXANDER, ALANA CONSTANTINE, ROCHELLE STEEL, DEBBIE BOREN, LAURA SCOTT BAKER, C. |
author_sort |
CARROLL, EMMA L. |
title |
Paternity assignment and demographic closure in the New Zealand southern right whale |
title_short |
Paternity assignment and demographic closure in the New Zealand southern right whale |
title_full |
Paternity assignment and demographic closure in the New Zealand southern right whale |
title_fullStr |
Paternity assignment and demographic closure in the New Zealand southern right whale |
title_full_unstemmed |
Paternity assignment and demographic closure in the New Zealand southern right whale |
title_sort |
paternity assignment and demographic closure in the new zealand southern right whale |
publisher |
Wiley |
publishDate |
2012 |
url |
http://dx.doi.org/10.1111/j.1365-294x.2012.05676.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1365-294X.2012.05676.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1365-294X.2012.05676.x |
geographic |
New Zealand Pacific |
geographic_facet |
New Zealand Pacific |
genre |
Southern Right Whale |
genre_facet |
Southern Right Whale |
op_source |
Molecular Ecology volume 21, issue 16, page 3960-3973 ISSN 0962-1083 1365-294X |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor http://doi.wiley.com/10.1002/tdm_license_1.1 |
op_doi |
https://doi.org/10.1111/j.1365-294x.2012.05676.x |
container_title |
Molecular Ecology |
container_volume |
21 |
container_issue |
16 |
container_start_page |
3960 |
op_container_end_page |
3973 |
_version_ |
1802650367693946880 |