First circumglobal assessment of Southern Hemisphere humpback whale mitochondrial genetic variation and implications for management
The description of genetic population structure over a species' geographic range can provide insights into its evolutionary history and also support effective management efforts. Assessments for globally distributed species are rare, however, requiring significant international coordination and...
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Edith Cowan University, Research Online, Perth, Western Australia
2017
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ftedithcowan:oai:ro.ecu.edu.au:ecuworkspost2013-12282 2023-05-15T16:35:54+02:00 First circumglobal assessment of Southern Hemisphere humpback whale mitochondrial genetic variation and implications for management Rosenbaum, Howard C. Kershaw, Francine Mendez, Martín Pomilla, Cristina Leslie, Matthew S. Findlay, Ken P. Best, Peter B. Collins, Timothy Vely, Michel Engel, Marcia H. Baldwin, Robert Minton, Gianna Meÿer, Michael Flórez-González, Lilian Poole, M. Michael Hauser, Nan Garrigue, Claire Brasseur, Muriel Bannister, John Anderson, Megan Olavarría, Carlos Baker, C. Scott 2017-01-01T08:00:00Z application/pdf https://ro.ecu.edu.au/ecuworkspost2013/11276 https://ro.ecu.edu.au/cgi/viewcontent.cgi?article=12282&context=ecuworkspost2013 unknown Edith Cowan University, Research Online, Perth, Western Australia https://ro.ecu.edu.au/ecuworkspost2013/11276 https://ro.ecu.edu.au/cgi/viewcontent.cgi?article=12282&context=ecuworkspost2013 http://creativecommons.org/licenses/by/4.0/ CC-BY Research outputs 2014 to 2021 Arabian Sea Humpback whale International Whaling Commission Management unit Population structure Southern Hemisphere Biology Ecology and Evolutionary Biology Life Sciences Terrestrial and Aquatic Ecology text 2017 ftedithcowan 2022-11-19T23:44:56Z The description of genetic population structure over a species' geographic range can provide insights into its evolutionary history and also support effective management efforts. Assessments for globally distributed species are rare, however, requiring significant international coordination and collaboration. The global distribution of demographically discrete populations for the humpback whale Megaptera novaeangliae is not fully known, hampering the definition of appropriate management units. Here, we present the first circumglobal assessment of mito - chondrial genetic population structure across the species' range in the Southern Hemisphere and Arabian Sea. We combine new and existing data from the mitochondrial (mt)DNA control region that resulted in a 311 bp consensus sequence of the mtDNA control region for 3009 individuals sampled across 14 breeding stocks and subpopulations currently recognized by the International Whaling Commission. We assess genetic diversity and test for genetic differentiation and also estimate the magnitude and directionality of historic matrilineal gene flow between putative populations. Our results indicate that maternally directed site fidelity drives significant genetic population structure between breeding stocks within ocean basins. However, patterns of connectivity differ across the circumpolar range, possibly as a result of differences in the extent of longitudinal movements on feeding areas. The number of population comparisons observed to be significantly differentiated were found to diminish at the subpopulation scale when nucleotide differences were examined, indicating that more complex processes underlie genetic structure at this scale. It is crucial that these complexities and uncertainties are afforded greater consideration in management and regulatory efforts. Text Humpback Whale Megaptera novaeangliae Edith Cowan University (ECU, Australia): Research Online |
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Open Polar |
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Edith Cowan University (ECU, Australia): Research Online |
op_collection_id |
ftedithcowan |
language |
unknown |
topic |
Arabian Sea Humpback whale International Whaling Commission Management unit Population structure Southern Hemisphere Biology Ecology and Evolutionary Biology Life Sciences Terrestrial and Aquatic Ecology |
spellingShingle |
Arabian Sea Humpback whale International Whaling Commission Management unit Population structure Southern Hemisphere Biology Ecology and Evolutionary Biology Life Sciences Terrestrial and Aquatic Ecology Rosenbaum, Howard C. Kershaw, Francine Mendez, Martín Pomilla, Cristina Leslie, Matthew S. Findlay, Ken P. Best, Peter B. Collins, Timothy Vely, Michel Engel, Marcia H. Baldwin, Robert Minton, Gianna Meÿer, Michael Flórez-González, Lilian Poole, M. Michael Hauser, Nan Garrigue, Claire Brasseur, Muriel Bannister, John Anderson, Megan Olavarría, Carlos Baker, C. Scott First circumglobal assessment of Southern Hemisphere humpback whale mitochondrial genetic variation and implications for management |
topic_facet |
Arabian Sea Humpback whale International Whaling Commission Management unit Population structure Southern Hemisphere Biology Ecology and Evolutionary Biology Life Sciences Terrestrial and Aquatic Ecology |
description |
The description of genetic population structure over a species' geographic range can provide insights into its evolutionary history and also support effective management efforts. Assessments for globally distributed species are rare, however, requiring significant international coordination and collaboration. The global distribution of demographically discrete populations for the humpback whale Megaptera novaeangliae is not fully known, hampering the definition of appropriate management units. Here, we present the first circumglobal assessment of mito - chondrial genetic population structure across the species' range in the Southern Hemisphere and Arabian Sea. We combine new and existing data from the mitochondrial (mt)DNA control region that resulted in a 311 bp consensus sequence of the mtDNA control region for 3009 individuals sampled across 14 breeding stocks and subpopulations currently recognized by the International Whaling Commission. We assess genetic diversity and test for genetic differentiation and also estimate the magnitude and directionality of historic matrilineal gene flow between putative populations. Our results indicate that maternally directed site fidelity drives significant genetic population structure between breeding stocks within ocean basins. However, patterns of connectivity differ across the circumpolar range, possibly as a result of differences in the extent of longitudinal movements on feeding areas. The number of population comparisons observed to be significantly differentiated were found to diminish at the subpopulation scale when nucleotide differences were examined, indicating that more complex processes underlie genetic structure at this scale. It is crucial that these complexities and uncertainties are afforded greater consideration in management and regulatory efforts. |
format |
Text |
author |
Rosenbaum, Howard C. Kershaw, Francine Mendez, Martín Pomilla, Cristina Leslie, Matthew S. Findlay, Ken P. Best, Peter B. Collins, Timothy Vely, Michel Engel, Marcia H. Baldwin, Robert Minton, Gianna Meÿer, Michael Flórez-González, Lilian Poole, M. Michael Hauser, Nan Garrigue, Claire Brasseur, Muriel Bannister, John Anderson, Megan Olavarría, Carlos Baker, C. Scott |
author_facet |
Rosenbaum, Howard C. Kershaw, Francine Mendez, Martín Pomilla, Cristina Leslie, Matthew S. Findlay, Ken P. Best, Peter B. Collins, Timothy Vely, Michel Engel, Marcia H. Baldwin, Robert Minton, Gianna Meÿer, Michael Flórez-González, Lilian Poole, M. Michael Hauser, Nan Garrigue, Claire Brasseur, Muriel Bannister, John Anderson, Megan Olavarría, Carlos Baker, C. Scott |
author_sort |
Rosenbaum, Howard C. |
title |
First circumglobal assessment of Southern Hemisphere humpback whale mitochondrial genetic variation and implications for management |
title_short |
First circumglobal assessment of Southern Hemisphere humpback whale mitochondrial genetic variation and implications for management |
title_full |
First circumglobal assessment of Southern Hemisphere humpback whale mitochondrial genetic variation and implications for management |
title_fullStr |
First circumglobal assessment of Southern Hemisphere humpback whale mitochondrial genetic variation and implications for management |
title_full_unstemmed |
First circumglobal assessment of Southern Hemisphere humpback whale mitochondrial genetic variation and implications for management |
title_sort |
first circumglobal assessment of southern hemisphere humpback whale mitochondrial genetic variation and implications for management |
publisher |
Edith Cowan University, Research Online, Perth, Western Australia |
publishDate |
2017 |
url |
https://ro.ecu.edu.au/ecuworkspost2013/11276 https://ro.ecu.edu.au/cgi/viewcontent.cgi?article=12282&context=ecuworkspost2013 |
genre |
Humpback Whale Megaptera novaeangliae |
genre_facet |
Humpback Whale Megaptera novaeangliae |
op_source |
Research outputs 2014 to 2021 |
op_relation |
https://ro.ecu.edu.au/ecuworkspost2013/11276 https://ro.ecu.edu.au/cgi/viewcontent.cgi?article=12282&context=ecuworkspost2013 |
op_rights |
http://creativecommons.org/licenses/by/4.0/ |
op_rightsnorm |
CC-BY |
_version_ |
1766026204073164800 |