Fine-scale population structure of blue whale wintering aggregations in the Gulf of California.
Population differentiation in environments without well-defined geographical barriers represents a challenge for wildlife management. Based on a comprehensive database of individual sighting records (1988-2009) of blue whales from the winter/calving Gulf of California, we assessed the fine-scale gen...
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ftdoajarticles:oai:doaj.org/article:d20e13fe14dd4a21b52739faf12e3bcb 2023-05-15T15:45:14+02:00 Fine-scale population structure of blue whale wintering aggregations in the Gulf of California. Paula Costa-Urrutia Simona Sanvito Nelva Victoria-Cota Luis Enríquez-Paredes Diane Gendron 2013-01-01T00:00:00Z https://doi.org/10.1371/journal.pone.0058315 https://doaj.org/article/d20e13fe14dd4a21b52739faf12e3bcb EN eng Public Library of Science (PLoS) http://europepmc.org/articles/PMC3591444?pdf=render https://doaj.org/toc/1932-6203 1932-6203 doi:10.1371/journal.pone.0058315 https://doaj.org/article/d20e13fe14dd4a21b52739faf12e3bcb PLoS ONE, Vol 8, Iss 3, p e58315 (2013) Medicine R Science Q article 2013 ftdoajarticles https://doi.org/10.1371/journal.pone.0058315 2022-12-31T05:54:46Z Population differentiation in environments without well-defined geographical barriers represents a challenge for wildlife management. Based on a comprehensive database of individual sighting records (1988-2009) of blue whales from the winter/calving Gulf of California, we assessed the fine-scale genetic and spatial structure of the population using individual-based approaches. Skin samples of 187 individuals were analyzed for nine microsatellite loci. A single population with no divergence among years and months and no isolation by distance (Rxy = 0.1-0.001, p>0.05) were found. We ran two bayesian clustering methods using Structure and Geneland softwares in two different ways: 1) a general analysis including all individuals in which a single cluster was identified with both softwares; 2) a specific analysis of females only in which two main clusters (Loreto Bay and northern areas, and San Jose-La Paz Bay area) were revealed by Geneland program. This study provides information indicating that blue whales wintering in the Gulf of California are part of a single population unit and showed a fine-scale structure among females, possibly associated with their high site fidelity, particularly when attending calves. It is likely that the loss of genetic variation is minimized by male mediated gene flow, which may reduce the genetic drift effect. Opportunities for kin selection may also influence calf survival and, in consequence, have a positive impact on population demography in this small and endangered population. Article in Journal/Newspaper Blue whale Directory of Open Access Journals: DOAJ Articles San Jose ENVELOPE(-58.067,-58.067,-63.917,-63.917) PLoS ONE 8 3 e58315 |
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Open Polar |
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Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Medicine R Science Q |
spellingShingle |
Medicine R Science Q Paula Costa-Urrutia Simona Sanvito Nelva Victoria-Cota Luis Enríquez-Paredes Diane Gendron Fine-scale population structure of blue whale wintering aggregations in the Gulf of California. |
topic_facet |
Medicine R Science Q |
description |
Population differentiation in environments without well-defined geographical barriers represents a challenge for wildlife management. Based on a comprehensive database of individual sighting records (1988-2009) of blue whales from the winter/calving Gulf of California, we assessed the fine-scale genetic and spatial structure of the population using individual-based approaches. Skin samples of 187 individuals were analyzed for nine microsatellite loci. A single population with no divergence among years and months and no isolation by distance (Rxy = 0.1-0.001, p>0.05) were found. We ran two bayesian clustering methods using Structure and Geneland softwares in two different ways: 1) a general analysis including all individuals in which a single cluster was identified with both softwares; 2) a specific analysis of females only in which two main clusters (Loreto Bay and northern areas, and San Jose-La Paz Bay area) were revealed by Geneland program. This study provides information indicating that blue whales wintering in the Gulf of California are part of a single population unit and showed a fine-scale structure among females, possibly associated with their high site fidelity, particularly when attending calves. It is likely that the loss of genetic variation is minimized by male mediated gene flow, which may reduce the genetic drift effect. Opportunities for kin selection may also influence calf survival and, in consequence, have a positive impact on population demography in this small and endangered population. |
format |
Article in Journal/Newspaper |
author |
Paula Costa-Urrutia Simona Sanvito Nelva Victoria-Cota Luis Enríquez-Paredes Diane Gendron |
author_facet |
Paula Costa-Urrutia Simona Sanvito Nelva Victoria-Cota Luis Enríquez-Paredes Diane Gendron |
author_sort |
Paula Costa-Urrutia |
title |
Fine-scale population structure of blue whale wintering aggregations in the Gulf of California. |
title_short |
Fine-scale population structure of blue whale wintering aggregations in the Gulf of California. |
title_full |
Fine-scale population structure of blue whale wintering aggregations in the Gulf of California. |
title_fullStr |
Fine-scale population structure of blue whale wintering aggregations in the Gulf of California. |
title_full_unstemmed |
Fine-scale population structure of blue whale wintering aggregations in the Gulf of California. |
title_sort |
fine-scale population structure of blue whale wintering aggregations in the gulf of california. |
publisher |
Public Library of Science (PLoS) |
publishDate |
2013 |
url |
https://doi.org/10.1371/journal.pone.0058315 https://doaj.org/article/d20e13fe14dd4a21b52739faf12e3bcb |
long_lat |
ENVELOPE(-58.067,-58.067,-63.917,-63.917) |
geographic |
San Jose |
geographic_facet |
San Jose |
genre |
Blue whale |
genre_facet |
Blue whale |
op_source |
PLoS ONE, Vol 8, Iss 3, p e58315 (2013) |
op_relation |
http://europepmc.org/articles/PMC3591444?pdf=render https://doaj.org/toc/1932-6203 1932-6203 doi:10.1371/journal.pone.0058315 https://doaj.org/article/d20e13fe14dd4a21b52739faf12e3bcb |
op_doi |
https://doi.org/10.1371/journal.pone.0058315 |
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PLoS ONE |
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8 |
container_issue |
3 |
container_start_page |
e58315 |
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1766379562450550784 |