Speciation and population differentiation in yellow-nosed albatrosses
Abstract: The two species of yellow-nosed albatross, Atlantic (Thalassarche chlororhynchos) and Indian (Thalassarche carteri), are morphologically similar, however, they show some differences in behaviour and breeding range. We studied genetic variation within and among the two species using nuclear...
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ftdatacite:10.48448/2f96-vf15 2023-05-15T13:22:30+02:00 Speciation and population differentiation in yellow-nosed albatrosses 3rd World Seabird Conference 2021 Abeyrama, Dilini 2021 https://dx.doi.org/10.48448/2f96-vf15 https://underline.io/lecture/34739-speciation-and-population-differentiation-in-yellow-nosed-albatrosses unknown Underline Science Inc. Animal Science Veterinary Genetics Ornithology MediaObject article Conference talk Audiovisual 2021 ftdatacite https://doi.org/10.48448/2f96-vf15 2022-02-09T11:22:26Z Abstract: The two species of yellow-nosed albatross, Atlantic (Thalassarche chlororhynchos) and Indian (Thalassarche carteri), are morphologically similar, however, they show some differences in behaviour and breeding range. We studied genetic variation within and among the two species using nuclear (microsatellite, Pema7 and Occa9) and mitochondrial (control region) markers. We analysed 201 samples of Atlantic yellow-nosed albatross from Nightingale, Inaccessible and Gough Islands and 33 samples of Indian yellow-nosed albatross from Amsterdam Island. Both sets of markers differentiated the two species. Microsatellite and Occa9 nuclear markers revealed two genetically distinct groups within Atlantic yellow-nosed albatross, grouping birds from Nightingale and Inaccessible Islands together and separating birds from Gough Island. Differences in at-sea distribution might have resulted in genetic differentiation within Atlantic yellow-nosed albatross, but there is no evidence currently of such differences. Both species are listed as endangered due to their limited number of breeding sites and threats from introduced diseases, introduced predators and fishing mortality. Our results contribute to conservation and management plans for the two species, and suggest the need for separate management of the two genetically distinct groups of Atlantic yellow-nosed albatross breeding at the Tristan group (80%) and Gough Island (20%). Key words: yellow-nosed albatross, genetic variation, microsatellite, nuclear marker Authors: Dilini Abeyrama¹, Zach Dempsey¹, Peter Ryan², Theresa Burg¹ ¹University of Lethbridge, ²FitzPatrick Institute of African Ornithology Article in Journal/Newspaper Amsterdam Island Inaccessible Islands DataCite Metadata Store (German National Library of Science and Technology) Gough ENVELOPE(159.367,159.367,-81.633,-81.633) Inaccessible Islands ENVELOPE(-46.666,-46.666,-60.583,-60.583) Indian Tristan ENVELOPE(140.900,140.900,-66.735,-66.735) |
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Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
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unknown |
topic |
Animal Science Veterinary Genetics Ornithology |
spellingShingle |
Animal Science Veterinary Genetics Ornithology 3rd World Seabird Conference 2021 Abeyrama, Dilini Speciation and population differentiation in yellow-nosed albatrosses |
topic_facet |
Animal Science Veterinary Genetics Ornithology |
description |
Abstract: The two species of yellow-nosed albatross, Atlantic (Thalassarche chlororhynchos) and Indian (Thalassarche carteri), are morphologically similar, however, they show some differences in behaviour and breeding range. We studied genetic variation within and among the two species using nuclear (microsatellite, Pema7 and Occa9) and mitochondrial (control region) markers. We analysed 201 samples of Atlantic yellow-nosed albatross from Nightingale, Inaccessible and Gough Islands and 33 samples of Indian yellow-nosed albatross from Amsterdam Island. Both sets of markers differentiated the two species. Microsatellite and Occa9 nuclear markers revealed two genetically distinct groups within Atlantic yellow-nosed albatross, grouping birds from Nightingale and Inaccessible Islands together and separating birds from Gough Island. Differences in at-sea distribution might have resulted in genetic differentiation within Atlantic yellow-nosed albatross, but there is no evidence currently of such differences. Both species are listed as endangered due to their limited number of breeding sites and threats from introduced diseases, introduced predators and fishing mortality. Our results contribute to conservation and management plans for the two species, and suggest the need for separate management of the two genetically distinct groups of Atlantic yellow-nosed albatross breeding at the Tristan group (80%) and Gough Island (20%). Key words: yellow-nosed albatross, genetic variation, microsatellite, nuclear marker Authors: Dilini Abeyrama¹, Zach Dempsey¹, Peter Ryan², Theresa Burg¹ ¹University of Lethbridge, ²FitzPatrick Institute of African Ornithology |
format |
Article in Journal/Newspaper |
author |
3rd World Seabird Conference 2021 Abeyrama, Dilini |
author_facet |
3rd World Seabird Conference 2021 Abeyrama, Dilini |
author_sort |
3rd World Seabird Conference 2021 |
title |
Speciation and population differentiation in yellow-nosed albatrosses |
title_short |
Speciation and population differentiation in yellow-nosed albatrosses |
title_full |
Speciation and population differentiation in yellow-nosed albatrosses |
title_fullStr |
Speciation and population differentiation in yellow-nosed albatrosses |
title_full_unstemmed |
Speciation and population differentiation in yellow-nosed albatrosses |
title_sort |
speciation and population differentiation in yellow-nosed albatrosses |
publisher |
Underline Science Inc. |
publishDate |
2021 |
url |
https://dx.doi.org/10.48448/2f96-vf15 https://underline.io/lecture/34739-speciation-and-population-differentiation-in-yellow-nosed-albatrosses |
long_lat |
ENVELOPE(159.367,159.367,-81.633,-81.633) ENVELOPE(-46.666,-46.666,-60.583,-60.583) ENVELOPE(140.900,140.900,-66.735,-66.735) |
geographic |
Gough Inaccessible Islands Indian Tristan |
geographic_facet |
Gough Inaccessible Islands Indian Tristan |
genre |
Amsterdam Island Inaccessible Islands |
genre_facet |
Amsterdam Island Inaccessible Islands |
op_doi |
https://doi.org/10.48448/2f96-vf15 |
_version_ |
1766365226218815488 |