Genetic divergence between colonies of Flesh-footed Shearwater Ardenna carneipes exhibiting different foraging strategies
Increasing evidence suggests foraging segregation as a key mechanism promoting genetic divergence within seabird species. However, testing for a relationship between population genetic structure and foraging movements among seabird colonies can be challenging. Telemetry studies suggest that Flesh-fo...
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Online Access: | http://hdl.handle.net/2440/120337 https://doi.org/10.1007/s10592-017-0994-y |
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ftunivadelaidedl:oai:digital.library.adelaide.edu.au:2440/120337 2023-12-17T10:49:21+01:00 Genetic divergence between colonies of Flesh-footed Shearwater Ardenna carneipes exhibiting different foraging strategies Lombal, A. Wenner, T. Lavers, J. Austin, J. Woehler, E. Hutton, I. Burridge, C. 2018 http://hdl.handle.net/2440/120337 https://doi.org/10.1007/s10592-017-0994-y en eng Springer Nature Conservation Genetics, 2018; 19(1):27-41 1566-0621 1572-9737 http://hdl.handle.net/2440/120337 doi:10.1007/s10592-017-0994-y Austin, J. [0000-0003-4244-2942] © Springer Science+Business Media B.V. 2017 http://dx.doi.org/10.1007/s10592-017-0994-y Oceanic seabirds Ardenna carneipes gene flow genetic divergence foraging segregation genetic assignment conservation management Journal article 2018 ftunivadelaidedl https://doi.org/10.1007/s10592-017-0994-y 2023-11-20T23:20:37Z Increasing evidence suggests foraging segregation as a key mechanism promoting genetic divergence within seabird species. However, testing for a relationship between population genetic structure and foraging movements among seabird colonies can be challenging. Telemetry studies suggest that Flesh-footed Shearwater Ardenna carneipes that breed at Lord Howe Island or New Zealand, versus southwestern Australia or Saint-Paul Island in the Indian Ocean, migrate to different regions (North Pacific Ocean and northern Indian Ocean, respectively) during the non-breeding season, which may inhibit gene flow among colonies. In this study, we sequenced a 858-base pair mitochondrial region and seven nuclear DNA fragments (352–654 bp) for 148 individuals to test genetic differentiation among colonies of Flesh-footed Shearwaters. Strong genetic divergence was detected between Pacific colonies relative to those further West. Molecular analysis of fisheries’ bycatch individuals sampled in the Sea of Japan indicated that individuals from both western and eastern colonies were migrating through this area, and hence the apparent segregation of the non-breeding distribution based on telemetry is invalid and cannot contribute to the population genetic structure among colonies. The genetic divergence among colonies is better explained by philopatry and evidence of differences in foraging strategies during the breeding season, as supported by the observed genetic divergence between Lord Howe Island and New Zealand colonies. We suggest molecular analysis of fisheries’ bycatch individuals as a rigorous method to identify foraging segregation, and we recommend the eastern and western A. carneipes colonies be regarded as different Management Units. Anicee J. Lombal, Theodore J. Wenner, Jennifer L. Lavers, Jeremy J. Austin, Eric J. Woehler, Ian Hutton, Christopher P. Burridge Article in Journal/Newspaper Saint-Paul Island The University of Adelaide: Digital Library Austin Pacific Indian New Zealand Theodore ENVELOPE(-62.450,-62.450,-64.933,-64.933) Saint-Paul ENVELOPE(-57.715,-57.715,51.467,51.467) Jeremy ENVELOPE(-68.838,-68.838,-69.402,-69.402) Conservation Genetics 19 1 27 41 |
institution |
Open Polar |
collection |
The University of Adelaide: Digital Library |
op_collection_id |
ftunivadelaidedl |
language |
English |
topic |
Oceanic seabirds Ardenna carneipes gene flow genetic divergence foraging segregation genetic assignment conservation management |
spellingShingle |
Oceanic seabirds Ardenna carneipes gene flow genetic divergence foraging segregation genetic assignment conservation management Lombal, A. Wenner, T. Lavers, J. Austin, J. Woehler, E. Hutton, I. Burridge, C. Genetic divergence between colonies of Flesh-footed Shearwater Ardenna carneipes exhibiting different foraging strategies |
topic_facet |
Oceanic seabirds Ardenna carneipes gene flow genetic divergence foraging segregation genetic assignment conservation management |
description |
Increasing evidence suggests foraging segregation as a key mechanism promoting genetic divergence within seabird species. However, testing for a relationship between population genetic structure and foraging movements among seabird colonies can be challenging. Telemetry studies suggest that Flesh-footed Shearwater Ardenna carneipes that breed at Lord Howe Island or New Zealand, versus southwestern Australia or Saint-Paul Island in the Indian Ocean, migrate to different regions (North Pacific Ocean and northern Indian Ocean, respectively) during the non-breeding season, which may inhibit gene flow among colonies. In this study, we sequenced a 858-base pair mitochondrial region and seven nuclear DNA fragments (352–654 bp) for 148 individuals to test genetic differentiation among colonies of Flesh-footed Shearwaters. Strong genetic divergence was detected between Pacific colonies relative to those further West. Molecular analysis of fisheries’ bycatch individuals sampled in the Sea of Japan indicated that individuals from both western and eastern colonies were migrating through this area, and hence the apparent segregation of the non-breeding distribution based on telemetry is invalid and cannot contribute to the population genetic structure among colonies. The genetic divergence among colonies is better explained by philopatry and evidence of differences in foraging strategies during the breeding season, as supported by the observed genetic divergence between Lord Howe Island and New Zealand colonies. We suggest molecular analysis of fisheries’ bycatch individuals as a rigorous method to identify foraging segregation, and we recommend the eastern and western A. carneipes colonies be regarded as different Management Units. Anicee J. Lombal, Theodore J. Wenner, Jennifer L. Lavers, Jeremy J. Austin, Eric J. Woehler, Ian Hutton, Christopher P. Burridge |
format |
Article in Journal/Newspaper |
author |
Lombal, A. Wenner, T. Lavers, J. Austin, J. Woehler, E. Hutton, I. Burridge, C. |
author_facet |
Lombal, A. Wenner, T. Lavers, J. Austin, J. Woehler, E. Hutton, I. Burridge, C. |
author_sort |
Lombal, A. |
title |
Genetic divergence between colonies of Flesh-footed Shearwater Ardenna carneipes exhibiting different foraging strategies |
title_short |
Genetic divergence between colonies of Flesh-footed Shearwater Ardenna carneipes exhibiting different foraging strategies |
title_full |
Genetic divergence between colonies of Flesh-footed Shearwater Ardenna carneipes exhibiting different foraging strategies |
title_fullStr |
Genetic divergence between colonies of Flesh-footed Shearwater Ardenna carneipes exhibiting different foraging strategies |
title_full_unstemmed |
Genetic divergence between colonies of Flesh-footed Shearwater Ardenna carneipes exhibiting different foraging strategies |
title_sort |
genetic divergence between colonies of flesh-footed shearwater ardenna carneipes exhibiting different foraging strategies |
publisher |
Springer Nature |
publishDate |
2018 |
url |
http://hdl.handle.net/2440/120337 https://doi.org/10.1007/s10592-017-0994-y |
long_lat |
ENVELOPE(-62.450,-62.450,-64.933,-64.933) ENVELOPE(-57.715,-57.715,51.467,51.467) ENVELOPE(-68.838,-68.838,-69.402,-69.402) |
geographic |
Austin Pacific Indian New Zealand Theodore Saint-Paul Jeremy |
geographic_facet |
Austin Pacific Indian New Zealand Theodore Saint-Paul Jeremy |
genre |
Saint-Paul Island |
genre_facet |
Saint-Paul Island |
op_source |
http://dx.doi.org/10.1007/s10592-017-0994-y |
op_relation |
Conservation Genetics, 2018; 19(1):27-41 1566-0621 1572-9737 http://hdl.handle.net/2440/120337 doi:10.1007/s10592-017-0994-y Austin, J. [0000-0003-4244-2942] |
op_rights |
© Springer Science+Business Media B.V. 2017 |
op_doi |
https://doi.org/10.1007/s10592-017-0994-y |
container_title |
Conservation Genetics |
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19 |
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1 |
container_start_page |
27 |
op_container_end_page |
41 |
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1785573761499529216 |