干旱区生态环境知识资源中心(Arid): Noninvasive Sampling Reveals Short-Term Genetic Rescue in an Insular Red Fox Population

Arid

DOI	10.1093/jhered/esz024
	Noninvasive Sampling Reveals Short-Term Genetic Rescue in an Insular Red Fox Population
	Quinn, Cate B.1,2; Alden, Preston B.1,2; Sacks, Benjamin N.1,2
通讯作者	Quinn, Cate B.
来源期刊	JOURNAL OF HEREDITY
ISSN	0022-1503
EISSN	1465-7333
出版年	2019
卷号	110 期号:5 页码:559-576
英文摘要	Genetic factors in the decline of small populations are extremely difficult to study in nature. We leveraged a natural experiment to investigate evidence of inbreeding depression and genetic rescue in a remnant population of subalpine-specialized Sierra Nevada red foxes (Vulpes vulpes necator) using noninvasive genetic monitoring during 2010-2017. Only 7 individuals were detected in the first 2 years. These individuals assigned genetically to the historical population and exhibited genetic hallmarks of inbreeding and no evidence of reproduction. Two years into the study, we detected 2 first-generation immigrant males from a recently expanding population of red foxes in the Great Basin Desert. Through annual resampling of individuals (634 red fox DNA samples, 41 individuals) and molecular reconstruction of pedigrees, we documented 1-3 litters/year for 5 years, all descended directly or indirectly from matings involving immigrant foxes. The observed heterozygosity and allelic richness of the population nearly doubled in 2 years. Abundance increased, indicative of a rapidly expanding population. Throughout the study, adult survival was high. Restoration of gene flow apparently improved the demographic trajectory of this population in the short term. Whether these benefits continue in the longer term could depend on numerous factors, such as maintenance of any locally adapted alleles. This study highlights the value of noninvasive genetic monitoring to assess rapidly shifting conditions in small populations. Uncertainties about the longer-term trajectory of this population underscore the need to continue monitoring and to research potential for both negative and positive aspects of continued genetic infusion.
英文关键词	inbreeding depression noninvasive genetic sampling Sierra Nevada red fox small populations Vulpes vulpes necator
类型	Article
语种	英语
国家	USA
开放获取类型	Bronze
收录类别	SCI-E
WOS记录号	WOS:000482421500004
WOS关键词	HETEROZYGOSITY-FITNESS CORRELATIONS ; INBREEDING DEPRESSION ; VULPES-VULPES ; HOME-RANGE ; MOLECULAR TRACKING ; AQUILA-HELIACA ; CONSERVATION ; INFERENCE ; CARNIVORE ; SIZE
WOS类目	Evolutionary Biology ; Genetics & Heredity
WOS研究方向	Evolutionary Biology ; Genetics & Heredity
来源机构	University of California, Davis
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/217111
作者单位	1.Univ Calif Davis, Vet Genet Lab, Mammalian Ecol & Conservat Unit, Davis, CA 95616 USA; 2.Univ Calif Davis, Sch Vet Med, Dept Populat Hlth & Reprod, Davis, CA 95616 USA
推荐引用方式 GB/T 7714	Quinn, Cate B.,Alden, Preston B.,Sacks, Benjamin N.. Noninvasive Sampling Reveals Short-Term Genetic Rescue in an Insular Red Fox Population[J]. University of California, Davis,2019,110(5):559-576.
APA	Quinn, Cate B.,Alden, Preston B.,&Sacks, Benjamin N..(2019).Noninvasive Sampling Reveals Short-Term Genetic Rescue in an Insular Red Fox Population.JOURNAL OF HEREDITY,110(5),559-576.
MLA	Quinn, Cate B.,et al."Noninvasive Sampling Reveals Short-Term Genetic Rescue in an Insular Red Fox Population".JOURNAL OF HEREDITY 110.5(2019):559-576.