Arid
DOI10.1007/s10592-014-0583-2
Lack of sex-biased dispersal promotes fine-scale genetic structure in alpine ungulates
Roffler, Gretchen H.1; Talbot, Sandra L.1; Luikart, Gordon2; Sage, George K.1; Pilgrim, Kristy L.3; Adams, Layne G.1; Schwartz, Michael K.3
通讯作者Roffler, Gretchen H.
来源期刊CONSERVATION GENETICS
ISSN1566-0621
EISSN1572-9737
出版年2014
卷号15期号:4页码:837-851
英文摘要

Identifying patterns of fine-scale genetic structure in natural populations can advance understanding of critical ecological processes such as dispersal and gene flow across heterogeneous landscapes. Alpine ungulates generally exhibit high levels of genetic structure due to female philopatry and patchy configuration of mountain habitats. We assessed the spatial scale of genetic structure and the amount of gene flow in 301 Dall’s sheep (Ovis dalli dalli) at the landscape level using 15 nuclear microsatellites and 473 base pairs of the mitochondrial (mtDNA) control region. Dall’s sheep exhibited significant genetic structure within contiguous mountain ranges, but mtDNA structure occurred at a broader geographic scale than nuclear DNA within the study area, and mtDNA structure for other North American mountain sheep populations. No evidence of male-mediated gene flow or greater philopatry of females was observed; there was little difference between markers with different modes of inheritance (pairwise nuclear DNA F (ST) = 0.004-0.325; mtDNA F (ST) = 0.009-0.544), and males were no more likely than females to be recent immigrants. Historical patterns based on mtDNA indicate separate northern and southern lineages and a pattern of expansion following regional glacial retreat. Boundaries of genetic clusters aligned geographically with prominent mountain ranges, icefields, and major river valleys based on Bayesian and hierarchical modeling of microsatellite and mtDNA data. Our results suggest that fine-scale genetic structure in Dall’s sheep is influenced by limited dispersal, and structure may be weaker in populations occurring near ancestral levels of density and distribution in continuous habitats compared to other alpine ungulates that have experienced declines and marked habitat fragmentation.


英文关键词Fine-scale genetic structure Sex-biased dispersal Philopatry Landscape genetics Population connectivity Non-invasive sampling Ovis dalli dalli
类型Article
语种英语
国家USA
收录类别SCI-E
WOS记录号WOS:000339732800008
WOS关键词MITOCHONDRIAL-DNA VARIATION ; DESERT BIGHORN SHEEP ; POPULATION-STRUCTURE ; LANDSCAPE GENETICS ; MULTILOCUS GENOTYPES ; STATISTICAL-MODEL ; CHAMOIS RUPICAPRA ; MOUNTAIN SHEEP ; MATING SYSTEMS ; FLOW
WOS类目Biodiversity Conservation ; Genetics & Heredity
WOS研究方向Biodiversity & Conservation ; Genetics & Heredity
来源机构United States Geological Survey
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/181468
作者单位1.US Geol Survey, Alaska Sci Ctr, Anchorage, AK 99508 USA;
2.Univ Montana, Flathead Lake Biol Stn, Fish & Wildlife Genom Grp, Div Biol Sci, Polson, MT 59860 USA;
3.US Forest Serv, Rocky Mt Res Stn, Missoula, MT 59801 USA
推荐引用方式
GB/T 7714
Roffler, Gretchen H.,Talbot, Sandra L.,Luikart, Gordon,et al. Lack of sex-biased dispersal promotes fine-scale genetic structure in alpine ungulates[J]. United States Geological Survey,2014,15(4):837-851.
APA Roffler, Gretchen H..,Talbot, Sandra L..,Luikart, Gordon.,Sage, George K..,Pilgrim, Kristy L..,...&Schwartz, Michael K..(2014).Lack of sex-biased dispersal promotes fine-scale genetic structure in alpine ungulates.CONSERVATION GENETICS,15(4),837-851.
MLA Roffler, Gretchen H.,et al."Lack of sex-biased dispersal promotes fine-scale genetic structure in alpine ungulates".CONSERVATION GENETICS 15.4(2014):837-851.
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