Arid
DOI10.1007/s10592-010-0053-4
North American montane red foxes: expansion, fragmentation, and the origin of the Sacramento Valley red fox
Sacks, Benjamin N.1; Statham, Mark J.2; Perrine, John D.3; Wisely, Samantha M.2; Aubry, Keith B.4
通讯作者Sacks, Benjamin N.
来源期刊CONSERVATION GENETICS
ISSN1566-0621
EISSN1572-9737
出版年2010
卷号11期号:4页码:1523-1539
英文摘要

Most native red foxes (Vulpes vulpes) in the western contiguous United States appear to be climatically restricted to colder regions in the major mountain ranges and, in some areas, have suffered precipitous declines in abundance that may be linked to warming trends. However, another population of unknown origin has occurred in arid habitats in the Sacramento Valley of California well outside this narrow bioclimatic niche since at least 1880. If native, this population would be ecologically distinct among indigenous North American red foxes. We used mitochondrial and microsatellite markers from historical and modern samples (modes: 1910-1930 and 2000-2008, respectively) obtained throughout the western United States to determine the origins of the Sacramento Valley red fox, and assess the historical and modern connectivity and genetic effective population sizes of Sacramento Valley and montane red foxes. We found clear and consistent evidence supporting the indigenous origin of the Sacramento Valley population, including the phylogenetic positioning of the dominant, endemic mtDNA clade and microsatellite clustering of the Sacramento Valley population with the nearest montane population. Based on both mitochondrial and microsatellite AMOVAs, connectivity among Western populations of red foxes declined substantially between historical and modern time periods. Estimates based on temporal losses in gene diversity for both marker types suggest that both the Sierra Nevada (including the Southern Cascades population) and the Sacramento Valley populations have small genetic effective population sizes. Significant heterozygote excesses also indicate the occurrence of recent bottlenecks in these populations. Both substitutions distinguishing the 2 endemic Sacramento Valley haplotypes from the dominant montane haplotype were in the coding region and nonsynonymous, consistent with adaptive differences. These findings along with previously reported body size distinctions between Sacramento Valley and montane red foxes argue for distinct subspecific status for the Sacramento Valley red fox, for which we propose the designation V. v. patwin n. subsp. The small genetic effective population size estimates for the Sierra Nevada red fox and Sacramento Valley red fox are cause for concern, as is the possibility of genetic introgression into the latter population from an adjacent, recently established nonnative population.


英文关键词Gene flow Genetic structure Phylogeography Red fox Sacramento Valley Subspecies Vulpes vulpes V. v. patwin
类型Article
语种英语
国家USA
收录类别SCI-E
WOS记录号WOS:000278899500024
WOS关键词EFFECTIVE POPULATION-SIZE ; MULTILOCUS GENOTYPE DATA ; ALLELE FREQUENCY DATA ; VULPES-VULPES ; LINKAGE DISEQUILIBRIUM ; MITOCHONDRIAL-DNA ; COMPUTER-PROGRAM ; MUSEUM SPECIMENS ; MIGRATION RATES ; BERGMANN RULE
WOS类目Biodiversity Conservation ; Genetics & Heredity
WOS研究方向Biodiversity & Conservation ; Genetics & Heredity
来源机构University of California, Davis ; E18
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/163752
作者单位1.Calif State Univ Sacramento, Dept Biol Sci, Sacramento, CA 95819 USA;
2.Kansas State Univ, Div Biol, Manhattan, KS 66506 USA;
3.Calif Polytech State Univ San Luis Obispo, Dept Biol Sci, San Luis Obispo, CA 93407 USA;
4.US Forest Serv, Pacific NW Res Stn, Olympia, WA 98512 USA
推荐引用方式
GB/T 7714
Sacks, Benjamin N.,Statham, Mark J.,Perrine, John D.,et al. North American montane red foxes: expansion, fragmentation, and the origin of the Sacramento Valley red fox[J]. University of California, Davis, E18,2010,11(4):1523-1539.
APA Sacks, Benjamin N.,Statham, Mark J.,Perrine, John D.,Wisely, Samantha M.,&Aubry, Keith B..(2010).North American montane red foxes: expansion, fragmentation, and the origin of the Sacramento Valley red fox.CONSERVATION GENETICS,11(4),1523-1539.
MLA Sacks, Benjamin N.,et al."North American montane red foxes: expansion, fragmentation, and the origin of the Sacramento Valley red fox".CONSERVATION GENETICS 11.4(2010):1523-1539.
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