Inbreeding and Loss of Genetic Variation in a Reintroduced Population of Mauritius Kestrel

Many populations have recovered from severe bottlenecks either naturally or through intensive conservation management. In the past, however, few conservation programs have monitored the genetic health of recovering populations. We conducted a conservation genetic assessment of a small, reintroduced...

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Veröffentlicht in:	Conservation biology Jg. 22; H. 2; S. 395 - 404
Hauptverfasser:	EWING, STEVEN R, NAGER, RUEDI G, NICOLL, MALCOLM A.C, AUMJAUD, AURELIEN, JONES, CARL G, KELLER, LUKAS F
Format:	Journal Article
Sprache:	Englisch
Veröffentlicht:	Malden, USA Blackwell Publishing Inc 01.04.2008 Blackwell Publishing, Inc Blackwell Blackwell Publishing Ltd
Schlagworte:	Animal genetics Animal populations Animal, plant and microbial ecology Animals análisis de baja de genes Applied ecology Bambous Mountains Biological and medical sciences Biology Birds Breeding Conservation Conservation biology conservation genetics Conservation of Natural Resources Conservation of Natural Resources - methods conservation programs Conservation, protection and management of environment and wildlife effective population size Endangered & extinct species Endangered species endogamia especies en peligro Evolutionary genetics Falco punctatus Falconiformes Falconiformes - genetics Falconiformes - physiology Fundamental and applied biological sciences. Psychology gene-drop analysis General aspects Genetic diversity Genetic Variation Genetics Genetics, Population genética de la conservación Inbreeding Inbreeding coefficient interspecific variation Mauritius Mauritius Kestrel methods montañas Bambous Parks, reserves, wildlife conservation. Endangered species: population survey and restocking Pedigree pedigrí physiology Population genetics Population size Reintroduction tamaño poblacional efectivo variación genética Vertebrates viability Wildlife conservation Mauritius Genetic variability Endangered species Genetic resource Loss Population number Falco punctatus genetic variation Reintroduction Raptor pedigree effective population size gene-drop analysis Vertebrata Mountain Mauritius Kestrel Inbreeding Bambous Mountains Aves Environmental protection conservation genetics
ISSN:	0888-8892, 1523-1739, 1523-1739
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Zusammenfassung:	Many populations have recovered from severe bottlenecks either naturally or through intensive conservation management. In the past, however, few conservation programs have monitored the genetic health of recovering populations. We conducted a conservation genetic assessment of a small, reintroduced population of Mauritius Kestrel ( Falco punctatus) to determine whether genetic deterioration has occurred since its reintroduction. We used pedigree analysis that partially accounted for individuals of unknown origin to document that (1) inbreeding occurred frequently (2.6% increase per generation; NeI= 18.9), (2) 25% of breeding pairs were composed of either closely or moderately related individuals, (3) genetic diversity has been lost from the population (1.6% loss per generation; NeV= 32.1) less rapidly than the corresponding increase in inbreeding, and (4) ignoring the contribution of unknown individuals to a pedigree will bias the metrics derived from that pedigree, ultimately obscuring the prevailing genetic dynamics. The rates of inbreeding and loss of genetic variation in the subpopulation of Mauritius Kestrel we examined were extreme and among the highest yet documented in a wild vertebrate population. Thus, genetic deterioration may affect this population's long-term viability. Remedial conservation strategies are needed to reduce the impact of inbreeding and loss of genetic variation in this species. We suggest that schemes to monitor genetic variation after reintroduction should be an integral component of endangered species recovery programs.
Bibliographie:	http://dx.doi.org/10.1111/j.1523-1739.2008.00884.x ArticleID:COBI884 ark:/67375/WNG-9LN9RW9C-3 istex:0AC826022D6BA22DC48EFD038F56E183580A7A4A This paper is dedicated to the memory of Aurelien Aumjaud, a brilliant and committed conservation biologist. SourceType-Scholarly Journals-1 ObjectType-Feature-1 content type line 14 ObjectType-Article-1 ObjectType-Feature-2 content type line 23 ObjectType-Article-2
ISSN:	0888-8892 1523-1739 1523-1739
DOI:	10.1111/j.1523-1739.2008.00884.x