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The Genomic Footprints of the Fall and Recovery of the Crested Ibis
Feng, Shaohong Fang, Qi Barnett, Ross Li, Cai Han, Sojung Kuhlwilm, Martin Zhou, Long Pan, Hailin Deng, Yuan Chen, Guangji
Feng, Shaohong
Fang, Qi
Barnett, Ross
Li, Cai
Han, Sojung
Kuhlwilm, Martin
Zhou, Long
Pan, Hailin
Deng, Yuan
Chen, Guangji
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2019-01-10
Submitted Date
2020-11-19
Subject Terms
conservation genomics
Population Genomics
endangered species
extinction
demography
inbreeding
mutation load
genetic recovery
ancient genomics
ornithology
Population Genomics
endangered species
extinction
demography
inbreeding
mutation load
genetic recovery
ancient genomics
ornithology
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Abstract
Human-induced environmental change and habitat fragmentation pose major threats to biodiversity and require active conservation efforts to mitigate their consequences. Genetic rescue through translocation and the introduction of variation into imperiled populations has been argued as a powerful means to preserve, or even increase, the genetic diversity and evolutionary potential of endangered species [1-4]. However, factors such as outbreeding depression [5, 6] and a reduction in available genetic diversity render the success of such approaches uncertain. An improved evaluation of the consequence of genetic restoration requires knowledge of temporal changes to genetic diversity before and after the advent of management programs. To provide such information, a growing number of studies have included small numbers of genomic loci extracted from historic and even ancient specimens [7, 8]. We extend this approach to its natural conclusion, by characterizing the complete genomic sequences of modern and historic population samples of the crested ibis (Nipponia nippon), an endangered bird that is perhaps the most successful example of how conservation effort has brought a species back from the brink of extinction. Though its once tiny population has today recovered to >2,000 individuals [9], this process was accompanied by almost half of ancestral loss of genetic variation and high deleterious mutation load. We furthermore show how genetic drift coupled to inbreeding following the population bottleneck has largely purged the ancient polymorphisms from the current population. In conclusion, we demonstrate the unique promise of exploiting genomic information held within museum samples for conservation and ecological research.
Citation
Shaohong Feng, Qi Fang, Ross Barnett, Cai Li, Sojung Han, Martin Kuhlwilm, Long Zhou, Hailin Pan, Yuan Deng, Guangji Chen, Anita Gamauf, Friederike Woog, Robert Prys-Jones, Tomas Marques-Bonet, M. Thomas P. Gilbert, Guojie Zhang, The Genomic Footprints of the Fall and Recovery of the Crested Ibis,Current Biology,Volume 29, Issue 2,2019,Pages 340-349.e7, ISSN 0960-9822, https://doi.org/10.1016/j.cub.2018.12.008.
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© 2018 The Author(s). Published by Elsevier Ltd. This is an open access article available to all published under a Creative Commons Attribution – NonCommercial – NoDerivs (CC BY-NC-ND 4.0). The attached file is the published pdf.
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0960-9822
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1879-0445
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openAccess