Genomic signatures of extensive inbreeding in Isle Royale wolves, a population on the threshold of extinction
The observation that small isolated populations often suffer reduced fitness from inbreeding depression has guided conservation theory and practice for decades. However, investigating the genome-wide dynamics associated with inbreeding depression in natural populations is only now feasible with rela...
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ftpubmed:oai:pubmedcentral.nih.gov:6541468 2023-05-15T15:50:18+02:00 Genomic signatures of extensive inbreeding in Isle Royale wolves, a population on the threshold of extinction Robinson, Jacqueline A. Räikkönen, Jannikke Vucetich, Leah M. Vucetich, John A. Peterson, Rolf O. Lohmueller, Kirk E. Wayne, Robert K. 2019-05-29 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6541468/ https://doi.org/10.1126/sciadv.aau0757 en eng American Association for the Advancement of Science http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6541468/ http://dx.doi.org/10.1126/sciadv.aau0757 Copyright © 2019 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works. Distributed under a Creative Commons Attribution NonCommercial License 4.0 (CC BY-NC). http://creativecommons.org/licenses/by-nc/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution-NonCommercial license (http://creativecommons.org/licenses/by-nc/4.0/) , which permits use, distribution, and reproduction in any medium, so long as the resultant use is not for commercial advantage and provided the original work is properly cited. CC-BY-NC Research Articles Text 2019 ftpubmed https://doi.org/10.1126/sciadv.aau0757 2019-06-02T00:32:24Z The observation that small isolated populations often suffer reduced fitness from inbreeding depression has guided conservation theory and practice for decades. However, investigating the genome-wide dynamics associated with inbreeding depression in natural populations is only now feasible with relatively inexpensive sequencing technology and annotated reference genomes. To characterize the genome-wide effects of intense inbreeding and isolation, we performed whole-genome sequencing and morphological analysis of an iconic inbred population, the gray wolves (Canis lupus) of Isle Royale. Through population genetic simulations and comparison with wolf genomes from a variety of demographic histories, we find evidence that severe inbreeding depression in this population is due to increased homozygosity of strongly deleterious recessive mutations. Our results have particular relevance in light of the recent translocation of wolves from the mainland to Isle Royale, as well as broader implications for management of genetic variation in the fragmented landscape of the modern world. Text Canis lupus PubMed Central (PMC) Science Advances 5 5 eaau0757 |
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Research Articles Robinson, Jacqueline A. Räikkönen, Jannikke Vucetich, Leah M. Vucetich, John A. Peterson, Rolf O. Lohmueller, Kirk E. Wayne, Robert K. Genomic signatures of extensive inbreeding in Isle Royale wolves, a population on the threshold of extinction |
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Research Articles |
description |
The observation that small isolated populations often suffer reduced fitness from inbreeding depression has guided conservation theory and practice for decades. However, investigating the genome-wide dynamics associated with inbreeding depression in natural populations is only now feasible with relatively inexpensive sequencing technology and annotated reference genomes. To characterize the genome-wide effects of intense inbreeding and isolation, we performed whole-genome sequencing and morphological analysis of an iconic inbred population, the gray wolves (Canis lupus) of Isle Royale. Through population genetic simulations and comparison with wolf genomes from a variety of demographic histories, we find evidence that severe inbreeding depression in this population is due to increased homozygosity of strongly deleterious recessive mutations. Our results have particular relevance in light of the recent translocation of wolves from the mainland to Isle Royale, as well as broader implications for management of genetic variation in the fragmented landscape of the modern world. |
format |
Text |
author |
Robinson, Jacqueline A. Räikkönen, Jannikke Vucetich, Leah M. Vucetich, John A. Peterson, Rolf O. Lohmueller, Kirk E. Wayne, Robert K. |
author_facet |
Robinson, Jacqueline A. Räikkönen, Jannikke Vucetich, Leah M. Vucetich, John A. Peterson, Rolf O. Lohmueller, Kirk E. Wayne, Robert K. |
author_sort |
Robinson, Jacqueline A. |
title |
Genomic signatures of extensive inbreeding in Isle Royale wolves, a population on the threshold of extinction |
title_short |
Genomic signatures of extensive inbreeding in Isle Royale wolves, a population on the threshold of extinction |
title_full |
Genomic signatures of extensive inbreeding in Isle Royale wolves, a population on the threshold of extinction |
title_fullStr |
Genomic signatures of extensive inbreeding in Isle Royale wolves, a population on the threshold of extinction |
title_full_unstemmed |
Genomic signatures of extensive inbreeding in Isle Royale wolves, a population on the threshold of extinction |
title_sort |
genomic signatures of extensive inbreeding in isle royale wolves, a population on the threshold of extinction |
publisher |
American Association for the Advancement of Science |
publishDate |
2019 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6541468/ https://doi.org/10.1126/sciadv.aau0757 |
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Canis lupus |
genre_facet |
Canis lupus |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6541468/ http://dx.doi.org/10.1126/sciadv.aau0757 |
op_rights |
Copyright © 2019 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works. Distributed under a Creative Commons Attribution NonCommercial License 4.0 (CC BY-NC). http://creativecommons.org/licenses/by-nc/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution-NonCommercial license (http://creativecommons.org/licenses/by-nc/4.0/) , which permits use, distribution, and reproduction in any medium, so long as the resultant use is not for commercial advantage and provided the original work is properly cited. |
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CC-BY-NC |
op_doi |
https://doi.org/10.1126/sciadv.aau0757 |
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Science Advances |
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