Little evidence for inbreeding depression for birth mass, survival and growth in Antarctic fur seal pups
Paijmans A, Berthelsen AL, Nagel R, et al. Little evidence for inbreeding depression for birth mass, survival and growth in Antarctic fur seal pups. bioRxiv . 2024. Inbreeding depression, the loss of offspring fitness due to consanguineous mating, is generally detrimental for individual performance...
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ftubbiepub:oai:pub.uni-bielefeld.de:2986067 2024-05-19T07:31:44+00:00 Little evidence for inbreeding depression for birth mass, survival and growth in Antarctic fur seal pups Paijmans, Anneke Berthelsen, Ane Liv Nagel, Rebecca Christaller, Felicitas Kroecker, Nicole Forcada, Jaume Hoffman, Joseph 2024 https://pub.uni-bielefeld.de/record/2986067 eng eng Cold Spring Harbor Laboratory info:eu-repo/semantics/altIdentifier/doi/10.1101/2024.01.12.575355 https://pub.uni-bielefeld.de/record/2986067 info:eu-repo/semantics/closedAccess http://purl.org/coar/resource_type/c_816b info:eu-repo/semantics/preprint doc-type:preprint text 2024 ftubbiepub https://doi.org/10.1101/2024.01.12.575355 2024-04-25T23:30:08Z Paijmans A, Berthelsen AL, Nagel R, et al. Little evidence for inbreeding depression for birth mass, survival and growth in Antarctic fur seal pups. bioRxiv . 2024. Inbreeding depression, the loss of offspring fitness due to consanguineous mating, is generally detrimental for individual performance and population viability. We therefore investigated inbreeding effects in a declining population of Antarctic fur seals at Bird Island, South Georgia. Here, localised warming has reduced the availability of the seal's staple diet, Antarctic krill, leading to a temporal increase in the strength of viability selection against inbred offspring, which are increasingly failing to recruit into the adult breeding population. However, it remains unclear whether viability selection operates before or after nutritional independence at weaning. We therefore used microsatellite data from 884 pups and their mothers, and SNP array data from 100 mother-offspring pairs, to quantify the effects of individual and maternal inbreeding on three important neonatal fitness traits: birth mass, survival and growth. We did not find any clear or consistent effects of inbreeding on any of these traits. This suggests that viability selection filters inbred individuals out of the population as juveniles during the time window between weaning and recruitment. Our study brings into focus a poorly understood life-history stage and emphasises the importance of understanding the ecology and threats facing juvenile pinnipeds. Report Antarc* Antarctic Antarctic Fur Seal Antarctic Fur Seals Antarctic Krill Bird Island PUB - Publications at Bielefeld University |
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PUB - Publications at Bielefeld University |
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ftubbiepub |
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English |
description |
Paijmans A, Berthelsen AL, Nagel R, et al. Little evidence for inbreeding depression for birth mass, survival and growth in Antarctic fur seal pups. bioRxiv . 2024. Inbreeding depression, the loss of offspring fitness due to consanguineous mating, is generally detrimental for individual performance and population viability. We therefore investigated inbreeding effects in a declining population of Antarctic fur seals at Bird Island, South Georgia. Here, localised warming has reduced the availability of the seal's staple diet, Antarctic krill, leading to a temporal increase in the strength of viability selection against inbred offspring, which are increasingly failing to recruit into the adult breeding population. However, it remains unclear whether viability selection operates before or after nutritional independence at weaning. We therefore used microsatellite data from 884 pups and their mothers, and SNP array data from 100 mother-offspring pairs, to quantify the effects of individual and maternal inbreeding on three important neonatal fitness traits: birth mass, survival and growth. We did not find any clear or consistent effects of inbreeding on any of these traits. This suggests that viability selection filters inbred individuals out of the population as juveniles during the time window between weaning and recruitment. Our study brings into focus a poorly understood life-history stage and emphasises the importance of understanding the ecology and threats facing juvenile pinnipeds. |
format |
Report |
author |
Paijmans, Anneke Berthelsen, Ane Liv Nagel, Rebecca Christaller, Felicitas Kroecker, Nicole Forcada, Jaume Hoffman, Joseph |
spellingShingle |
Paijmans, Anneke Berthelsen, Ane Liv Nagel, Rebecca Christaller, Felicitas Kroecker, Nicole Forcada, Jaume Hoffman, Joseph Little evidence for inbreeding depression for birth mass, survival and growth in Antarctic fur seal pups |
author_facet |
Paijmans, Anneke Berthelsen, Ane Liv Nagel, Rebecca Christaller, Felicitas Kroecker, Nicole Forcada, Jaume Hoffman, Joseph |
author_sort |
Paijmans, Anneke |
title |
Little evidence for inbreeding depression for birth mass, survival and growth in Antarctic fur seal pups |
title_short |
Little evidence for inbreeding depression for birth mass, survival and growth in Antarctic fur seal pups |
title_full |
Little evidence for inbreeding depression for birth mass, survival and growth in Antarctic fur seal pups |
title_fullStr |
Little evidence for inbreeding depression for birth mass, survival and growth in Antarctic fur seal pups |
title_full_unstemmed |
Little evidence for inbreeding depression for birth mass, survival and growth in Antarctic fur seal pups |
title_sort |
little evidence for inbreeding depression for birth mass, survival and growth in antarctic fur seal pups |
publisher |
Cold Spring Harbor Laboratory |
publishDate |
2024 |
url |
https://pub.uni-bielefeld.de/record/2986067 |
genre |
Antarc* Antarctic Antarctic Fur Seal Antarctic Fur Seals Antarctic Krill Bird Island |
genre_facet |
Antarc* Antarctic Antarctic Fur Seal Antarctic Fur Seals Antarctic Krill Bird Island |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1101/2024.01.12.575355 https://pub.uni-bielefeld.de/record/2986067 |
op_rights |
info:eu-repo/semantics/closedAccess |
op_doi |
https://doi.org/10.1101/2024.01.12.575355 |
_version_ |
1799469607470235648 |