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Historical Genomes Reveal the Genomic Consequences of Recent Population Decline in Eastern Gorillas
Swedish Museum of Natural History, Department of Bioinformatics and Genetics.
Swedish Museum of Natural History, Department of Bioinformatics and Genetics.ORCID iD: 0000-0002-9701-5940
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2019 (English)In: Current Biology, ISSN 0960-9822, E-ISSN 1879-0445, Vol. 29, no 1, p. 165-+Article in journal (Refereed) Published
Abstract [en]

Many endangered species have experienced severe population declines within the last centuries [1, 2]. However, despite concerns about negative fitness effects resulting from increased genetic drift and inbreeding, there is a lack of empirical data on genomic changes in conjunction with such declines [3-7]. Here, we use whole genomes recovered from century-old historical museum specimens to quantify the genomic consequences of small population size in the critically endangered Grauer's and endangered mountain gorillas. We find a reduction of genetic diversity and increase in inbreeding and genetic load in the Grauer's gorilla, which experienced severe population declines in recent decades. In contrast, the small but relatively stable mountain gorilla population has experienced little genomic change during the last century. These results suggest that species histories as well as the rate of demographic change may influence how population declines affect genome diversity.

Place, publisher, year, edition, pages
2019. Vol. 29, no 1, p. 165-+
National Category
Natural Sciences
Research subject
Diversity of life
Identifiers
URN: urn:nbn:se:nrm:diva-3683DOI: 10.1016/j.cub.2018.11.055ISI: 000455224500032PubMedID: 30595519OAI: oai:DiVA.org:nrm-3683DiVA, id: diva2:1381541
Funder
Swedish Research Council Formas, 2015-676Available from: 2019-12-22 Created: 2019-12-22 Last updated: 2019-12-22

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van der Valk, TomDiez-del-Molino, DavidGuschanski, KaterinaDalen, Love
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