Genetic differentiation between humpback whales (Megaptera novaeangliae) from Atlantic and Pacific breeding grounds of South America
Humpback whales wintering in tropical waters along the Atlantic and Pacific coasts of the South American continent are thought to represent distinct populations or “stocks.” Here we present the first analysis of genetic differentiation and estimates of gene flow between these breeding stocks, based...
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ftanucanberra:oai:openresearch-repository.anu.edu.au:1885/238305 2024-01-14T10:02:26+01:00 Genetic differentiation between humpback whales (Megaptera novaeangliae) from Atlantic and Pacific breeding grounds of South America Thiele, Deborah Cypriano-Souza, Ana Lúcia Engel, Márcia H. Caballero, Susana Olavarría, Carlos Flórez-González, Lilián Capella, Juan Steel, Debbie Sremba, Angie Aguayo, A. Baker, C. Scott Bonatto, Sandro L. application/pdf http://hdl.handle.net/1885/238305 https://doi.org/10.1111/mms.12378 https://openresearch-repository.anu.edu.au/bitstream/1885/238305/3/01_Thiele_Genetic_differentiation_2017.pdf.jpg en_AU eng Society for Marine Mammalogy 0824-0469 http://hdl.handle.net/1885/238305 doi:10.1111/mms.12378 https://openresearch-repository.anu.edu.au/bitstream/1885/238305/3/01_Thiele_Genetic_differentiation_2017.pdf.jpg © 2016 Society for Marine Mammalogy Marine Mammal Science Megaptera novaeangliae population genetic structure microsatellites mtDNA migration individual assignment Journal article ftanucanberra https://doi.org/10.1111/mms.12378 2023-12-15T09:34:52Z Humpback whales wintering in tropical waters along the Atlantic and Pacific coasts of the South American continent are thought to represent distinct populations or “stocks.” Here we present the first analysis of genetic differentiation and estimates of gene flow between these breeding stocks, based on both mitochondrial DNA (mtDNA) control region sequences (465 bp) and 16 microsatellite loci from samples collected off Brazil (n = 277) and Colombia (n = 148), as well as feeding areas near the western Antarctic Peninsula (n = 86). We found significant differentiation between Brazilian and Colombian breeding grounds at both mtDNA (FST = 0.058) and microsatellite (FST = 0.011) markers and corroborated previous studies showing genetic similarity between humpbacks from Colombia and those from Antarctic Peninsula feeding areas. Estimates of long-term gene flow between Brazil and Colombia were low to moderate, asymmetrical, and mostly mediated by males. Assignment procedures detected some cases of interchange and individuals of admixed ancestry between breeding grounds, indicating limited mixing of individuals between these stocks. Overall, results highlight the differentiation of humpback whale breeding populations with adjacent feeding grounds. This appears to be a remarkable example of fidelity to seasonal habitat in the absence of any contemporary barriers This work was supported by Coordenac ~ao de Aperfeic oamento de Pessoal de N ıvel Superior (CAPES) to ALC-S; Conselho Nacional de Desenvolvimento Cient ıfico e Tecnol ogico (CNPq) to SLB; Fundac ~ao de Amparo a Pesquisa do Estado do Rio Grande do Sul (FAPERGS) to SLB; Instituto Chico Mendes de Conservac ~ao da Biodiversidade/Minist erio do Meio Ambiente (ICMBIO/MMA); and Petr oleo Brasileiro S.A (PETROBRAS). Special support was given by CAPES for the scholarship award to ALC-S to conduct part of her doctoral research as a visiting student at Oregon State University (OSU). Biopsy samples were collected off Brazil under permit SISBIO 21489-1. Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula Humpback Whale Megaptera novaeangliae Australian National University: ANU Digital Collections Antarctic Antarctic Peninsula Pacific Marine Mammal Science 33 2 457 479 |
institution |
Open Polar |
collection |
Australian National University: ANU Digital Collections |
op_collection_id |
ftanucanberra |
language |
English |
topic |
Megaptera novaeangliae population genetic structure microsatellites mtDNA migration individual assignment |
spellingShingle |
Megaptera novaeangliae population genetic structure microsatellites mtDNA migration individual assignment Thiele, Deborah Cypriano-Souza, Ana Lúcia Engel, Márcia H. Caballero, Susana Olavarría, Carlos Flórez-González, Lilián Capella, Juan Steel, Debbie Sremba, Angie Aguayo, A. Baker, C. Scott Bonatto, Sandro L. Genetic differentiation between humpback whales (Megaptera novaeangliae) from Atlantic and Pacific breeding grounds of South America |
topic_facet |
Megaptera novaeangliae population genetic structure microsatellites mtDNA migration individual assignment |
description |
Humpback whales wintering in tropical waters along the Atlantic and Pacific coasts of the South American continent are thought to represent distinct populations or “stocks.” Here we present the first analysis of genetic differentiation and estimates of gene flow between these breeding stocks, based on both mitochondrial DNA (mtDNA) control region sequences (465 bp) and 16 microsatellite loci from samples collected off Brazil (n = 277) and Colombia (n = 148), as well as feeding areas near the western Antarctic Peninsula (n = 86). We found significant differentiation between Brazilian and Colombian breeding grounds at both mtDNA (FST = 0.058) and microsatellite (FST = 0.011) markers and corroborated previous studies showing genetic similarity between humpbacks from Colombia and those from Antarctic Peninsula feeding areas. Estimates of long-term gene flow between Brazil and Colombia were low to moderate, asymmetrical, and mostly mediated by males. Assignment procedures detected some cases of interchange and individuals of admixed ancestry between breeding grounds, indicating limited mixing of individuals between these stocks. Overall, results highlight the differentiation of humpback whale breeding populations with adjacent feeding grounds. This appears to be a remarkable example of fidelity to seasonal habitat in the absence of any contemporary barriers This work was supported by Coordenac ~ao de Aperfeic oamento de Pessoal de N ıvel Superior (CAPES) to ALC-S; Conselho Nacional de Desenvolvimento Cient ıfico e Tecnol ogico (CNPq) to SLB; Fundac ~ao de Amparo a Pesquisa do Estado do Rio Grande do Sul (FAPERGS) to SLB; Instituto Chico Mendes de Conservac ~ao da Biodiversidade/Minist erio do Meio Ambiente (ICMBIO/MMA); and Petr oleo Brasileiro S.A (PETROBRAS). Special support was given by CAPES for the scholarship award to ALC-S to conduct part of her doctoral research as a visiting student at Oregon State University (OSU). Biopsy samples were collected off Brazil under permit SISBIO 21489-1. |
format |
Article in Journal/Newspaper |
author |
Thiele, Deborah Cypriano-Souza, Ana Lúcia Engel, Márcia H. Caballero, Susana Olavarría, Carlos Flórez-González, Lilián Capella, Juan Steel, Debbie Sremba, Angie Aguayo, A. Baker, C. Scott Bonatto, Sandro L. |
author_facet |
Thiele, Deborah Cypriano-Souza, Ana Lúcia Engel, Márcia H. Caballero, Susana Olavarría, Carlos Flórez-González, Lilián Capella, Juan Steel, Debbie Sremba, Angie Aguayo, A. Baker, C. Scott Bonatto, Sandro L. |
author_sort |
Thiele, Deborah |
title |
Genetic differentiation between humpback whales (Megaptera novaeangliae) from Atlantic and Pacific breeding grounds of South America |
title_short |
Genetic differentiation between humpback whales (Megaptera novaeangliae) from Atlantic and Pacific breeding grounds of South America |
title_full |
Genetic differentiation between humpback whales (Megaptera novaeangliae) from Atlantic and Pacific breeding grounds of South America |
title_fullStr |
Genetic differentiation between humpback whales (Megaptera novaeangliae) from Atlantic and Pacific breeding grounds of South America |
title_full_unstemmed |
Genetic differentiation between humpback whales (Megaptera novaeangliae) from Atlantic and Pacific breeding grounds of South America |
title_sort |
genetic differentiation between humpback whales (megaptera novaeangliae) from atlantic and pacific breeding grounds of south america |
publisher |
Society for Marine Mammalogy |
url |
http://hdl.handle.net/1885/238305 https://doi.org/10.1111/mms.12378 https://openresearch-repository.anu.edu.au/bitstream/1885/238305/3/01_Thiele_Genetic_differentiation_2017.pdf.jpg |
geographic |
Antarctic Antarctic Peninsula Pacific |
geographic_facet |
Antarctic Antarctic Peninsula Pacific |
genre |
Antarc* Antarctic Antarctic Peninsula Humpback Whale Megaptera novaeangliae |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Humpback Whale Megaptera novaeangliae |
op_source |
Marine Mammal Science |
op_relation |
0824-0469 http://hdl.handle.net/1885/238305 doi:10.1111/mms.12378 https://openresearch-repository.anu.edu.au/bitstream/1885/238305/3/01_Thiele_Genetic_differentiation_2017.pdf.jpg |
op_rights |
© 2016 Society for Marine Mammalogy |
op_doi |
https://doi.org/10.1111/mms.12378 |
container_title |
Marine Mammal Science |
container_volume |
33 |
container_issue |
2 |
container_start_page |
457 |
op_container_end_page |
479 |
_version_ |
1788057468046147584 |