Multiple processes drive genetic structure of humpback whale ( Megaptera novaeangliae) populations across spatial scales
Abstract Elucidating patterns of population structure for species with complex life histories, and disentangling the processes driving such patterns, remains a significant analytical challenge. Humpback whale ( Megaptera novaeangliae ) populations display complex genetic structures that have not bee...
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crwiley:10.1111/mec.13943 2024-09-15T18:11:12+00:00 Multiple processes drive genetic structure of humpback whale ( Megaptera novaeangliae) populations across spatial scales Kershaw, Francine Carvalho, Inês Loo, Jacqueline Pomilla, Cristina Best, Peter B. Findlay, Ken P. Cerchio, Salvatore Collins, Tim Engel, Marcia H. Minton, Gianna Ersts, Peter Barendse, Jaco Kotze, P. G. H. Razafindrakoto, Yvette Ngouessono, Solange Meÿer, Michael Thornton, Meredith Rosenbaum, Howard C. American Museum of Natural History Wildlife Conservation Society Fundação para a Ciência e a Tecnologia American Museum of Natural History RAPAC - Projet Espèces Phares Wildlife Conservation Society Fundação para a Ciência e a Tecnologia 2017 http://dx.doi.org/10.1111/mec.13943 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fmec.13943 https://onlinelibrary.wiley.com/doi/pdf/10.1111/mec.13943 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor http://doi.wiley.com/10.1002/tdm_license_1 http://onlinelibrary.wiley.com/termsAndConditions Molecular Ecology volume 26, issue 4, page 977-994 ISSN 0962-1083 1365-294X journal-article 2017 crwiley https://doi.org/10.1111/mec.13943 2024-08-06T04:17:56Z Abstract Elucidating patterns of population structure for species with complex life histories, and disentangling the processes driving such patterns, remains a significant analytical challenge. Humpback whale ( Megaptera novaeangliae ) populations display complex genetic structures that have not been fully resolved at all spatial scales. We generated a data set of nuclear markers for 3575 samples spanning the seven breeding stocks and substocks found in the South Atlantic and western and northern Indian Oceans. For the total sample, and males and females separately, we assessed genetic diversity, tested for genetic differentiation between putative populations and isolation by distance, estimated the number of genetic clusters without a priori population information and estimated rates of gene flow using maximum‐likelihood and Bayesian approaches. At the ocean basin scale, structure is governed by geographical distance ( IBD P < 0.05) and female fidelity to breeding areas, in line with current understanding of the drivers of broadscale population structure. Consistent with previous studies, the Arabian Sea breeding stock was highly genetically differentiated ( F ST 0.034–0.161; P < 0.01 for all comparisons). However, the breeding stock boundary between west South Africa and east Africa was more porous than expected based on genetic differentiation, cluster and geneflow analyses. Instances of male fidelity to breeding areas and relatively high rates of dispersal for females were also observed between the three substocks in the western Indian Ocean. The relationships between demographic units and current management boundaries may have ramifications for assessments of the status and continued protections of populations still in recovery from commercial whaling. Article in Journal/Newspaper Humpback Whale Megaptera novaeangliae Wiley Online Library Molecular Ecology 26 4 977 994 |
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Wiley Online Library |
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crwiley |
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English |
description |
Abstract Elucidating patterns of population structure for species with complex life histories, and disentangling the processes driving such patterns, remains a significant analytical challenge. Humpback whale ( Megaptera novaeangliae ) populations display complex genetic structures that have not been fully resolved at all spatial scales. We generated a data set of nuclear markers for 3575 samples spanning the seven breeding stocks and substocks found in the South Atlantic and western and northern Indian Oceans. For the total sample, and males and females separately, we assessed genetic diversity, tested for genetic differentiation between putative populations and isolation by distance, estimated the number of genetic clusters without a priori population information and estimated rates of gene flow using maximum‐likelihood and Bayesian approaches. At the ocean basin scale, structure is governed by geographical distance ( IBD P < 0.05) and female fidelity to breeding areas, in line with current understanding of the drivers of broadscale population structure. Consistent with previous studies, the Arabian Sea breeding stock was highly genetically differentiated ( F ST 0.034–0.161; P < 0.01 for all comparisons). However, the breeding stock boundary between west South Africa and east Africa was more porous than expected based on genetic differentiation, cluster and geneflow analyses. Instances of male fidelity to breeding areas and relatively high rates of dispersal for females were also observed between the three substocks in the western Indian Ocean. The relationships between demographic units and current management boundaries may have ramifications for assessments of the status and continued protections of populations still in recovery from commercial whaling. |
author2 |
American Museum of Natural History Wildlife Conservation Society Fundação para a Ciência e a Tecnologia American Museum of Natural History RAPAC - Projet Espèces Phares Wildlife Conservation Society Fundação para a Ciência e a Tecnologia |
format |
Article in Journal/Newspaper |
author |
Kershaw, Francine Carvalho, Inês Loo, Jacqueline Pomilla, Cristina Best, Peter B. Findlay, Ken P. Cerchio, Salvatore Collins, Tim Engel, Marcia H. Minton, Gianna Ersts, Peter Barendse, Jaco Kotze, P. G. H. Razafindrakoto, Yvette Ngouessono, Solange Meÿer, Michael Thornton, Meredith Rosenbaum, Howard C. |
spellingShingle |
Kershaw, Francine Carvalho, Inês Loo, Jacqueline Pomilla, Cristina Best, Peter B. Findlay, Ken P. Cerchio, Salvatore Collins, Tim Engel, Marcia H. Minton, Gianna Ersts, Peter Barendse, Jaco Kotze, P. G. H. Razafindrakoto, Yvette Ngouessono, Solange Meÿer, Michael Thornton, Meredith Rosenbaum, Howard C. Multiple processes drive genetic structure of humpback whale ( Megaptera novaeangliae) populations across spatial scales |
author_facet |
Kershaw, Francine Carvalho, Inês Loo, Jacqueline Pomilla, Cristina Best, Peter B. Findlay, Ken P. Cerchio, Salvatore Collins, Tim Engel, Marcia H. Minton, Gianna Ersts, Peter Barendse, Jaco Kotze, P. G. H. Razafindrakoto, Yvette Ngouessono, Solange Meÿer, Michael Thornton, Meredith Rosenbaum, Howard C. |
author_sort |
Kershaw, Francine |
title |
Multiple processes drive genetic structure of humpback whale ( Megaptera novaeangliae) populations across spatial scales |
title_short |
Multiple processes drive genetic structure of humpback whale ( Megaptera novaeangliae) populations across spatial scales |
title_full |
Multiple processes drive genetic structure of humpback whale ( Megaptera novaeangliae) populations across spatial scales |
title_fullStr |
Multiple processes drive genetic structure of humpback whale ( Megaptera novaeangliae) populations across spatial scales |
title_full_unstemmed |
Multiple processes drive genetic structure of humpback whale ( Megaptera novaeangliae) populations across spatial scales |
title_sort |
multiple processes drive genetic structure of humpback whale ( megaptera novaeangliae) populations across spatial scales |
publisher |
Wiley |
publishDate |
2017 |
url |
http://dx.doi.org/10.1111/mec.13943 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fmec.13943 https://onlinelibrary.wiley.com/doi/pdf/10.1111/mec.13943 |
genre |
Humpback Whale Megaptera novaeangliae |
genre_facet |
Humpback Whale Megaptera novaeangliae |
op_source |
Molecular Ecology volume 26, issue 4, page 977-994 ISSN 0962-1083 1365-294X |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor http://doi.wiley.com/10.1002/tdm_license_1 http://onlinelibrary.wiley.com/termsAndConditions |
op_doi |
https://doi.org/10.1111/mec.13943 |
container_title |
Molecular Ecology |
container_volume |
26 |
container_issue |
4 |
container_start_page |
977 |
op_container_end_page |
994 |
_version_ |
1810448798221074432 |