干旱区生态环境知识资源中心(Arid): Limited influence of landscape on the genetic structure of three small mammals in a heterogeneous arid environment

Arid

DOI	10.1111/jbi.13523
	Limited influence of landscape on the genetic structure of three small mammals in a heterogeneous arid environment
	Levy, Esther 1; Byrne, Margaret 1; Huey, Joel A.2; Hillyer, Mia J.2; Firman, Renee C.3; Ottewell, Kym M.1,4
通讯作者	Ottewell, Kym M.
来源期刊	JOURNAL OF BIOGEOGRAPHY
ISSN	0305-0270
EISSN	1365-2699
出版年	2019
卷号	46 期号:3 页码:539-551
英文摘要	Aim The complexity and biologically challenging nature of arid landscapes can generate high inter- and intra-species diversity, although these biomes remain poorly studied. We investigated whether prominent geomorphic features in an Australian arid landscape had similar influences on patterns of intra-specific genetic diversity of three small mammals with different distribution and life history traits. Specifically, we tested (a) whether mountain ranges harbour high diversity and act as refugia, (b) the extent to which ephemeral river systems pose barriers to gene flow or (c) whether environmental differences explain genetic structure in these species. Location The topographically complex Pilbara bioregion of the Australian arid zone. Taxa Two rodents, the Western pebble-mound mouse, Pseudomys chapmani and the Sandy inland mouse, Pseudomys hermannsburgensis and a dasyurid, Ningaui timealeyi. Methods We used maximum parsimony networks of mitochondrial haplotypes and spatially-explicit Bayesian clustering analysis of microsatellite genotypes to identify historical and contemporary genetic structure in each species. Based on measures of individual diversity and genetic distance, we distinguished 'hotspots' and 'coldspots' (>1.5 standard deviations from the mean) of genetic diversity and genetic connectivity and assessed their concordance with landscape features. The influence of environmental dissimilarity on observed genetic differentiation was evaluated using generalized dissimilarity modelling. Results Patterns of genetic diversity and connectivity were complex, with few consistent patterns across species. Both microsatellite and mitochondrial diversity were high across species, with limited spatial genetic structure. Rivers had the most influence on genetic patterns but were not consistently identified as barriers. Environmental dissimilarity amongst sampling sites had low explanatory power. Main Conclusions Limited genetic structure in each of the three species suggests that the structurally complex Pilbara landscape remains relatively permeable to species with high dispersal capacity. Additionally, population responses to boom-bust cycles in arid environments are likely to obscure spatial genetic patterns.
英文关键词	arid zone genetic structure landscape mammal microsatellites phylogeography Pilbara
类型	Article
语种	英语
国家	Australia
收录类别	SCI-E
WOS记录号	WOS:000459813500004
WOS关键词	COMPARATIVE PHYLOGEOGRAPHY ; COMPUTER-PROGRAM ; PILBARA REGION ; AUSTRALIA ; DIVERSITY ; PATTERNS ; FLOW ; DIVERSIFICATION ; AMPLIFICATION ; BIODIVERSITY
WOS类目	Ecology ; Geography, Physical
WOS研究方向	Environmental Sciences & Ecology ; Physical Geography
来源机构	University of Western Australia
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/216819
作者单位	1.Bentley Delivery Ctr, Dept Biodivers Conservat & Attract, Biodivers & Conservat Sci, Bentley, WA, Australia; 2.Welshpool Delivery Ctr, Western Australian Museum, Dept Terr Zool, Welshpool, WA, Australia; 3.Univ Western Australia, Ctr Evolutionary Biol, Crawley, WA, Australia; 4.Murdoch Univ, Sch Biol Sci & Biotechnol, Murdoch, WA, Australia
推荐引用方式 GB/T 7714	Levy, Esther,Byrne, Margaret,Huey, Joel A.,et al. Limited influence of landscape on the genetic structure of three small mammals in a heterogeneous arid environment[J]. University of Western Australia,2019,46(3):539-551.
APA	Levy, Esther,Byrne, Margaret,Huey, Joel A.,Hillyer, Mia J.,Firman, Renee C.,&Ottewell, Kym M..(2019).Limited influence of landscape on the genetic structure of three small mammals in a heterogeneous arid environment.JOURNAL OF BIOGEOGRAPHY,46(3),539-551.
MLA	Levy, Esther,et al."Limited influence of landscape on the genetic structure of three small mammals in a heterogeneous arid environment".JOURNAL OF BIOGEOGRAPHY 46.3(2019):539-551.