Geographical distribution of close kin in southern right whales on feeding grounds
This study investigated the close kinship structure of southern right whales on feeding grounds during austral summer seasons. The study was based on biopsy samples of 171 individual whales, which were genotyped with 14 microsatellite DNA loci. Kinship was investigated by using the LOD (Log Odds) sc...
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crplos:10.1371/journal.pone.0301588 2024-05-19T07:30:58+00:00 Geographical distribution of close kin in southern right whales on feeding grounds Takahashi, Megumi Førland, Brage Pastene, Luis A. Skaug, Hans J. Paiva, Vitor Hugo Rodrigues 2024 http://dx.doi.org/10.1371/journal.pone.0301588 https://dx.plos.org/10.1371/journal.pone.0301588 en eng Public Library of Science (PLoS) http://creativecommons.org/licenses/by/4.0/ PLOS ONE volume 19, issue 4, page e0301588 ISSN 1932-6203 journal-article 2024 crplos https://doi.org/10.1371/journal.pone.0301588 2024-05-01T07:01:17Z This study investigated the close kinship structure of southern right whales on feeding grounds during austral summer seasons. The study was based on biopsy samples of 171 individual whales, which were genotyped with 14 microsatellite DNA loci. Kinship was investigated by using the LOD (Log Odds) score, a relatedness index for a pair of genotypes. Based on a cut-off point of LOD PO > 6, which was chosen to balance false positives and negatives, a total of 28 dyads were inferred. Among these, 25 were classified as parent-offspring pairs. Additional genetic (mitochondrial DNA haplotypes) and biological (estimated body length, sex) data were used to provide additional information on the inferred close kin pairs. The elapsed time between sampling varied from 0 (close kin detected in the same austral summer season) to 17 years. All the kin pairs occurred within the Antarctic Indo sector (85°-135°E) and no pair occurred between whales within and outside of this sector. Six pairs were between individuals in high (Antarctic) and lower latitudes. Results of the present analysis on kinship are consistent with the views that whales in the Indo sector of the Antarctic are related with the breeding ground in Southwest Australia, and that whales from this population can occupy different feeding grounds. The present study has the potential to contribute to the conservation of the southern right whales through the monitoring of important population parameters such as population sizes and growth rate, in addition to assist the interpretation of stock structure derived from standard population genetic analyses. Article in Journal/Newspaper Antarc* Antarctic PLOS PLOS ONE 19 4 e0301588 |
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English |
description |
This study investigated the close kinship structure of southern right whales on feeding grounds during austral summer seasons. The study was based on biopsy samples of 171 individual whales, which were genotyped with 14 microsatellite DNA loci. Kinship was investigated by using the LOD (Log Odds) score, a relatedness index for a pair of genotypes. Based on a cut-off point of LOD PO > 6, which was chosen to balance false positives and negatives, a total of 28 dyads were inferred. Among these, 25 were classified as parent-offspring pairs. Additional genetic (mitochondrial DNA haplotypes) and biological (estimated body length, sex) data were used to provide additional information on the inferred close kin pairs. The elapsed time between sampling varied from 0 (close kin detected in the same austral summer season) to 17 years. All the kin pairs occurred within the Antarctic Indo sector (85°-135°E) and no pair occurred between whales within and outside of this sector. Six pairs were between individuals in high (Antarctic) and lower latitudes. Results of the present analysis on kinship are consistent with the views that whales in the Indo sector of the Antarctic are related with the breeding ground in Southwest Australia, and that whales from this population can occupy different feeding grounds. The present study has the potential to contribute to the conservation of the southern right whales through the monitoring of important population parameters such as population sizes and growth rate, in addition to assist the interpretation of stock structure derived from standard population genetic analyses. |
author2 |
Paiva, Vitor Hugo Rodrigues |
format |
Article in Journal/Newspaper |
author |
Takahashi, Megumi Førland, Brage Pastene, Luis A. Skaug, Hans J. |
spellingShingle |
Takahashi, Megumi Førland, Brage Pastene, Luis A. Skaug, Hans J. Geographical distribution of close kin in southern right whales on feeding grounds |
author_facet |
Takahashi, Megumi Førland, Brage Pastene, Luis A. Skaug, Hans J. |
author_sort |
Takahashi, Megumi |
title |
Geographical distribution of close kin in southern right whales on feeding grounds |
title_short |
Geographical distribution of close kin in southern right whales on feeding grounds |
title_full |
Geographical distribution of close kin in southern right whales on feeding grounds |
title_fullStr |
Geographical distribution of close kin in southern right whales on feeding grounds |
title_full_unstemmed |
Geographical distribution of close kin in southern right whales on feeding grounds |
title_sort |
geographical distribution of close kin in southern right whales on feeding grounds |
publisher |
Public Library of Science (PLoS) |
publishDate |
2024 |
url |
http://dx.doi.org/10.1371/journal.pone.0301588 https://dx.plos.org/10.1371/journal.pone.0301588 |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_source |
PLOS ONE volume 19, issue 4, page e0301588 ISSN 1932-6203 |
op_rights |
http://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.1371/journal.pone.0301588 |
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PLOS ONE |
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19 |
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4 |
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e0301588 |
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