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Restricted dispersal determines fine-scale spatial genetic structure of Mongolian gerbils

Current Zoology 2017年第6期63卷 687-691页

作者： Guiming WANG Wei LIU Yanni WANG Xinrong WAN Wenqin ZHONG Department of Wildlife Fisheries and Aquaculture Mississippi State University Mail Stop 9690 Mississippi State MS 39762 USA Institute of Zoology Chinese Academy of Sciences State Key Laboratory of Integrated Management of Pest Insects and Rodents 1 Beichen West Road Chaoyang District Beijing 100101 China University of Chinese Academy of Sciences Beijing 100190 China College of Chemistry and Life Sciences Zhejiang Normal University 688 Yingbin Road Jinhua Zhejiang 321004 China

Restricted gene flow may cause positive spatial genetic autocorrelation of animal populations at fine spatial scales. The Mongolian gerbil is a territorial, social rodent. Territoriality may create social fences to restrict dispersal or gene flow of Mongolian gerbils to a short distance. Restricted dispersal may differentiate fine-scale spatial genetic structure of populations with increasing distances (i.e., isolation by distance [IBD]). Competition for mates and inbreeding avoidance may result in equal dispersal propensity and subsequently similar spatial genetic autocorrelation between males and females of monogamous gerbils. We genotyped 327 gerbils, live captured from 26 burrow systems on a 9-ha plot in northcentral Inner Mongolia, China, using seven microsatellite loci. Spatial genetic autocorrelation was positive within 80 m and became negative from 80 m to 200 m, suggesting restricted gene flow. Inter-group genetic and geographic distances were related positively, supporting the IBD model. Live trapping data demonstrated equal dispersal propensities of male and female gerbils. Restricted dispersal and social organization may determine fine-scale spatial population genetic structure of social rodents.

关键词： Meriones unguiculatus dispersal isolation by distance microsatellite analysis social rodents spatial genetic autocorrelation

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Restricted gene flow determines fine-scale genetic structure of group living Meriones unguiculatus

Restricted gene flow determines fine-scale genetic structure...

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第七届全国野生动物生态与资源保护学术研讨会

作者： Wei Liu~a,Guiming Wang,~b,Yanni Wang~c,Xinrong Wan~a,and Wenqin Zhong~a (a State Key Laboratory of Integrated Management of Pest Insects and Rodents,Institute of Zoology, Chinese Academy of Sciences,1 Beichen West Road,Chaoyang District,Beijing 100101,China. b Department of Wildlife,Fisheries and Aquaculture,Mississippi State University,Mississippi State, Mississippi 39762,USA.c College of Chemistry and Life Sciences,Zhejiang Normal University,688 Yingbin Road,Jinhua,Zhejiang 321004,China)

Restricted gene flow or isolation by distance(IBD) may produce the positive genetic structure of animal populations at fine spatial scales,whereas social breeding group models predict that breeding tactics and female ... 详细信息

关键词： breeding group models isolation by distance microsatellite analysis positive genetic structure social rodents spatial autocorrelation

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