Variation in reproductive success of male and female Columbian ground squirrels (Urocitellus columbianus)
Abstract:The imbalanced reproductive success of polygynous mammals results in sexual selection on male traits like body size. Males and females might have more balanced reproductive success under polygynandry, where both sexes mate multiply. Using 4 years of microsatellite DNA analyses of paternity and known maternity, we investigated variation in reproductive success of Columbian ground squirrels,
Keywords: Bateman gradient; Urocitellus columbianus; cycle biologique; gradient de Bateman; life history; multiple paternity; operational sex ratio; paternité multiple; rapport des sexes opérationnel; reproductive success; succès de reproduction
Document Type: Research Article
Affiliations: 1: Department of Microbiology, College of Medicine, University of Iowa, Iowa City, IA 52246, USA. 2: Department of Biological Sciences, Auburn University, 331 Funchess Hall, Auburn, AL 36849, USA.
Publication date: June 10, 2012
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