Fitness costs associated with ancestry to isolated populations of an endangered species
Average rating
Cast your vote
You can rate an item by clicking the amount of stars they wish to award to this item.
When enough users have cast their vote on this item, the average rating will also be shown.
Star rating
Your vote was cast
Thank you for your feedback
Thank you for your feedback
Issue Date
2020Author
Wilder, Aryn P.Navarro, Asako Y.
King, Shauna N. D.
Miller, William B.
Thomas, Steven M.
Steiner, Cynthia C.
Ryder, Oliver A.
Shier, Debra M.
Journal title
Conservation GeneticsVolume
21Issue
3Begin page
589End page
601
Metadata
Show full item recordAlternative link
https://doi.org/10.1007/s10592-020-01272-8Abstract
... The endangered Pacific pocket mouse (Perognathus longimembris pacificus) persists in three isolated populations in southern California. Mitochondrial and microsatellite data indicated that effective population sizes were extremely small (Ne< 50), and continued declines prompted a conservation breeding program founded by individuals from each population....Description
Restoring migration between fragmented populations can help reduce the risk of extinction. The endangered Pacific pocket mouse persists in three isolated populations in southern California. Continued declines coinciding with dramatic losses of genetic diversity prompted a conservation breeding program. Established by interbreeding founders from wild populations to provide a source of individuals for reintroductions, the breeding program also offers six generations of data and insight for managing wild populations. The data showed that reproductive success was higher in interbred individuals than founders from the smallest population, indicating a benefit to migration for this population. However, a sustained negative correlation between an individual’s reproductive success and its level of ancestry to the smallest population is consistent with a high load of harmful mutations. Together, the results suggest that facilitated migration should be unidirectional to (but not from) the smallest population to avoid introducing harmful genetic load into healthier populations.Type
ArticleRights
© Springer Nature B.V. 2020ae974a485f413a2113503eed53cd6c53
10.1007/s10592-020-01272-8
Scopus Count