Searching for genetic evidence of demographic decline in an arctic seabird: beware of overlapping generations
Genetic data are useful for detecting sudden population declines in species that are difficult to study in the field. Yet this indirect approach has its own drawbacks, including population structure, mutation patterns, and generation overlap. The ivory gull ( Pagophila eburnea ), a long-lived Arctic...
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ftzenodo:oai:zenodo.org:6326630 2024-09-15T18:15:25+00:00 Searching for genetic evidence of demographic decline in an arctic seabird: beware of overlapping generations Charbonnel, Emeline Daguin, Claire Caradec, Lucille Moittié, Eléonore Gilg, Olivier Gavrilo, Maria Strom, Hallvard Mallory, Mark L Gilchrist, Grant Morrisson, R. I. Guy Leblois, Raphael Roux, Camille Yearsley, Jonathan M Yannic, Glenn Broquet, Thomas 2022-03-03 https://doi.org/10.5061/dryad.j0zpc86gk unknown Zenodo https://zenodo.org/communities/dryad https://doi.org/10.5061/dryad.j0zpc86gk oai:zenodo.org:6326630 info:eu-repo/semantics/openAccess Creative Commons Zero v1.0 Universal https://creativecommons.org/publicdomain/zero/1.0/legalcode ivory gull Pagophila eburnea Coalescence Microsatellites SNPs Arctic Arctic seabirds info:eu-repo/semantics/other 2022 ftzenodo https://doi.org/10.5061/dryad.j0zpc86gk 2024-07-26T03:28:21Z Genetic data are useful for detecting sudden population declines in species that are difficult to study in the field. Yet this indirect approach has its own drawbacks, including population structure, mutation patterns, and generation overlap. The ivory gull ( Pagophila eburnea ), a long-lived Arctic seabird, is currently suffering from rapid alteration of its primary habitat (i.e., sea ice), and dramatic climatic events affecting reproduction and recruitment. However, ivory gulls live in remote areas, and it is difficult to assess the population trend of the species across its distribution. Here we present complementary microsatellite- and SNP-based genetic analyses to test a recent bottleneck genetic signal in ivory gulls over a large portion of their distribution. With attention to the potential effects of population structure, mutation patterns, and sample size, we found no significant signatures of population decline worldwide. At a finer scale, we found a significant bottleneck signal at one location in Canada. These results were compared with predictions from simulations showing how generation time and generation overlap can delay and reduce the bottleneck microsatellite heterozygosity excess signal. The consistency of the results obtained with independent methods strongly indicates that the species shows no genetic evidence of an overall decline in population size. However, drawing conclusions related to the species' population trends will require a better understanding of the effect of age structure in long-lived species. In addition, estimates of the effective global population size of ivory gulls were surprisingly low (approximately 1000 ind.), suggesting that the evolutionary potential of the species is not assured. Other/Unknown Material ivory gull Pagophila eburnea Sea ice Zenodo |
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ivory gull Pagophila eburnea Coalescence Microsatellites SNPs Arctic Arctic seabirds |
spellingShingle |
ivory gull Pagophila eburnea Coalescence Microsatellites SNPs Arctic Arctic seabirds Charbonnel, Emeline Daguin, Claire Caradec, Lucille Moittié, Eléonore Gilg, Olivier Gavrilo, Maria Strom, Hallvard Mallory, Mark L Gilchrist, Grant Morrisson, R. I. Guy Leblois, Raphael Roux, Camille Yearsley, Jonathan M Yannic, Glenn Broquet, Thomas Searching for genetic evidence of demographic decline in an arctic seabird: beware of overlapping generations |
topic_facet |
ivory gull Pagophila eburnea Coalescence Microsatellites SNPs Arctic Arctic seabirds |
description |
Genetic data are useful for detecting sudden population declines in species that are difficult to study in the field. Yet this indirect approach has its own drawbacks, including population structure, mutation patterns, and generation overlap. The ivory gull ( Pagophila eburnea ), a long-lived Arctic seabird, is currently suffering from rapid alteration of its primary habitat (i.e., sea ice), and dramatic climatic events affecting reproduction and recruitment. However, ivory gulls live in remote areas, and it is difficult to assess the population trend of the species across its distribution. Here we present complementary microsatellite- and SNP-based genetic analyses to test a recent bottleneck genetic signal in ivory gulls over a large portion of their distribution. With attention to the potential effects of population structure, mutation patterns, and sample size, we found no significant signatures of population decline worldwide. At a finer scale, we found a significant bottleneck signal at one location in Canada. These results were compared with predictions from simulations showing how generation time and generation overlap can delay and reduce the bottleneck microsatellite heterozygosity excess signal. The consistency of the results obtained with independent methods strongly indicates that the species shows no genetic evidence of an overall decline in population size. However, drawing conclusions related to the species' population trends will require a better understanding of the effect of age structure in long-lived species. In addition, estimates of the effective global population size of ivory gulls were surprisingly low (approximately 1000 ind.), suggesting that the evolutionary potential of the species is not assured. |
format |
Other/Unknown Material |
author |
Charbonnel, Emeline Daguin, Claire Caradec, Lucille Moittié, Eléonore Gilg, Olivier Gavrilo, Maria Strom, Hallvard Mallory, Mark L Gilchrist, Grant Morrisson, R. I. Guy Leblois, Raphael Roux, Camille Yearsley, Jonathan M Yannic, Glenn Broquet, Thomas |
author_facet |
Charbonnel, Emeline Daguin, Claire Caradec, Lucille Moittié, Eléonore Gilg, Olivier Gavrilo, Maria Strom, Hallvard Mallory, Mark L Gilchrist, Grant Morrisson, R. I. Guy Leblois, Raphael Roux, Camille Yearsley, Jonathan M Yannic, Glenn Broquet, Thomas |
author_sort |
Charbonnel, Emeline |
title |
Searching for genetic evidence of demographic decline in an arctic seabird: beware of overlapping generations |
title_short |
Searching for genetic evidence of demographic decline in an arctic seabird: beware of overlapping generations |
title_full |
Searching for genetic evidence of demographic decline in an arctic seabird: beware of overlapping generations |
title_fullStr |
Searching for genetic evidence of demographic decline in an arctic seabird: beware of overlapping generations |
title_full_unstemmed |
Searching for genetic evidence of demographic decline in an arctic seabird: beware of overlapping generations |
title_sort |
searching for genetic evidence of demographic decline in an arctic seabird: beware of overlapping generations |
publisher |
Zenodo |
publishDate |
2022 |
url |
https://doi.org/10.5061/dryad.j0zpc86gk |
genre |
ivory gull Pagophila eburnea Sea ice |
genre_facet |
ivory gull Pagophila eburnea Sea ice |
op_relation |
https://zenodo.org/communities/dryad https://doi.org/10.5061/dryad.j0zpc86gk oai:zenodo.org:6326630 |
op_rights |
info:eu-repo/semantics/openAccess Creative Commons Zero v1.0 Universal https://creativecommons.org/publicdomain/zero/1.0/legalcode |
op_doi |
https://doi.org/10.5061/dryad.j0zpc86gk |
_version_ |
1810453226559897600 |