干旱区生态环境知识资源中心(Arid): Ecology rather than people restrict gene flow in Okavango-Kalahari lions

Arid

DOI	10.1111/acv.12562
	Ecology rather than people restrict gene flow in Okavango-Kalahari lions
	Dures, S. G.; Carbone, C.; Savolainen, V.; Maude, G.; Gottelli, D.
通讯作者	Dures, SG
来源期刊	ANIMAL CONSERVATION
ISSN	1367-9430
EISSN	1469-1795
出版年	2020
卷号	23 期号:5 页码:502-515
英文摘要	Reduced gene exchange between animal populations may be an indicator of the effects of anthropogenic fragmentation or it may reflect natural gradients in the landscape that can also result in population fragmentation. It can be difficult, therefore, to disentangle the role of local ecology from anthropogenic factors, creating a risk of attributing a lack of gene flow as being due to human activities, leading to ill-informed management decisions. Here, we test the ecological and anthropogenic factors driving population differentiation and show how the relative influence of such effects can be identified. Using Bayesian clustering and a causal modelling approach, we combine genetic and remote sensing data to disentangle the confounding influences of ecological and anthropogenic fragmentation. We investigate a region where such confusion may arise; in and around the Okavango Delta in northern Botswana. Specifically, we used 20 microsatellites to investigate the genetic structuring of African lionsPanthera leooccupying a landscape dominated by two very different environments, the wetland Okavango and the surrounding Kalahari Desert. We find that differences in ecology, rather than anthropogenic barriers, are driving genetic differences in the population and that despite their ability to disperse long distances these lion populations are differentiated into two distinct genetic groups, one inhabiting the wetland Okavango Delta and the other one inhabiting the surrounding dryland Kalahari, divided by an apparently unobstructed boundary. The genetic structure observed could easily have been misinterpreted as a response to anthropogenic disturbance reducing gene flow. This reinforces the need to consider non-anthropogenic hypotheses, such as ecological differences between habitats, when assessing possible mechanisms of gene flow and their implications for population management. As anthropogenic pressure increases in this region, we recommend conservation managers consider the Okavango population as a separate conservation unit, but also recognize the importance of maintaining the current structural landscape connectivity.
英文关键词	landscape ecology landscape genetics landscape connectivity animal dispersal conservation Panthera leo
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000577621900005
WOS关键词	PANTHERA-LEO ; POPULATION-STRUCTURE ; HABITAT FRAGMENTATION ; GENOTYPING ERRORS ; SOFTWARE ; DYNAMICS ; DIFFERENTIATION ; CONSERVATION ; INFERENCE ; CARNIVORE
WOS类目	Biodiversity Conservation ; Ecology
WOS研究方向	Biodiversity & Conservation ; Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/326769
作者单位	[Dures, S. G.; Carbone, C.; Gottelli, D.] Zool Soc London, Inst Zool, London, England; [Dures, S. G.; Savolainen, V.] Imperial Coll London, Dept Life Sci, Ascot, Berks, England; [Maude, G.] Kalahari Res & Conservat, Maun, Botswana
推荐引用方式 GB/T 7714	Dures, S. G.,Carbone, C.,Savolainen, V.,et al. Ecology rather than people restrict gene flow in Okavango-Kalahari lions[J],2020,23(5):502-515.
APA	Dures, S. G.,Carbone, C.,Savolainen, V.,Maude, G.,&Gottelli, D..(2020).Ecology rather than people restrict gene flow in Okavango-Kalahari lions.ANIMAL CONSERVATION,23(5),502-515.
MLA	Dures, S. G.,et al."Ecology rather than people restrict gene flow in Okavango-Kalahari lions".ANIMAL CONSERVATION 23.5(2020):502-515.