干旱区生态环境知识资源中心(Arid): Genes in space: what Mojave desert tortoise genetics can tell us about landscape connectivity

Arid

DOI	10.1007/s10592-020-01251-z
	Genes in space: what Mojave desert tortoise genetics can tell us about landscape connectivity
	Dutcher, Kirsten E.1; Vandergast, Amy G.2; Esque, Todd C.3; Mitelberg, Anna 2; Matocq, Marjorie D.4; Heaton, Jill S.1; Nussear, Ken E.1
通讯作者	Dutcher, Kirsten E.
来源期刊	CONSERVATION GENETICS
ISSN	1566-0621
EISSN	1572-9737
出版年	2020
卷号	21 期号:2 页码:289-303
英文摘要	Habitat loss and fragmentation in the Mojave desert have been increasing, which can create barriers to movement and gene flow in populations of native species. Disturbance and degradation of Mojave desert tortoise habitat includes linear features (e.g. highways, railways, a network of dirt roads), urbanized areas, mining activities, and most recently, utility-scale solar facilities. To evaluate the spatial genetic structure of tortoises in an area experiencing rapid habitat loss, we genotyped 299 tortoises at 20 microsatellite loci from the Ivanpah valley region along the California/Nevada border. We used a Bayesian clustering analysis to quantify population genetic structure across valley and mountain pass habitats. A spatial principal components analysis was used to further investigate patterns with isolation-by-distance. To explicitly consider landscape features (e.g. habitat and anthropogenic linear barriers), we used maximum likelihood population effects analyses. We quantified recent gene flow through relatedness using a maximum likelihood pedigree approach. We detected three genetic clusters that generally corresponded to valleys separated by mountains, with one genetically distinguishable population in a mountain pass. Pedigree analyses showed second order relationships up to 60 km apart suggesting a greater range of interactions and inter-relatedness than previously suspected. Our results support historical gene flow with isolation-by-resistance and reveal reduced genetic connectivity across two parallel linear features bisecting our study area (a railway and a highway). Our work demonstrates the potential for tortoises to use a range of habitats, spanning valleys to mountain passes, but also indicates habitat fragmentation limits connectivity with relatively rapid genetic consequences.
英文关键词	Genetic connectivity Tortoise Habitat loss Fragmentation Population structure Gene flow
类型	Article
语种	英语
国家	USA
收录类别	SCI-E
WOS记录号	WOS:000515982900001
WOS关键词	POPULATION-STRUCTURE ; MICROSATELLITE LOCI ; GOPHERUS-AGASSIZII ; HUMAN FOOTPRINT ; F-STATISTICS ; R-PACKAGE ; FLOW ; MOVEMENT ; SOFTWARE ; CONSERVATION
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/2XILL650/314283
作者单位	1.Univ Nevada, Dept Geog, 1664 N Virginia St, Reno, NV 89557 USA; 2.US Geol Survey, Western Ecol Res Ctr, San Diego Field Stn, 4165 Spruance Rd,Suite 200, San Diego, CA 92101 USA; 3.US Geol Survey, Western Ecol Res Ctr, Henderson Field Stn, 160 N Stephanie St, Henderson, NV 89074 USA; 4.Univ Nevada, Dept Nat Resources & Environm Sci, Program Ecol Evolut & Conservat Biol, 1664 N Virginia St, Reno, NV 89557 USA
推荐引用方式 GB/T 7714	Dutcher, Kirsten E.,Vandergast, Amy G.,Esque, Todd C.,et al. Genes in space: what Mojave desert tortoise genetics can tell us about landscape connectivity[J]. United States Geological Survey,2020,21(2):289-303.
APA	Dutcher, Kirsten E..,Vandergast, Amy G..,Esque, Todd C..,Mitelberg, Anna.,Matocq, Marjorie D..,...&Nussear, Ken E..(2020).Genes in space: what Mojave desert tortoise genetics can tell us about landscape connectivity.CONSERVATION GENETICS,21(2),289-303.
MLA	Dutcher, Kirsten E.,et al."Genes in space: what Mojave desert tortoise genetics can tell us about landscape connectivity".CONSERVATION GENETICS 21.2(2020):289-303.