期刊
EVOLUTION AND HUMAN BEHAVIOR
卷 36, 期 6, 页码 456-466出版社
ELSEVIER SCIENCE INC
DOI: 10.1016/j.evolhumbehav.2015.05.001
关键词
Sexual selection; Mate choice; Sex ratio; Item response models
资金
- National Science Foundation [0962440]
- Wenner-Gren Foundation
- Division Of Behavioral and Cognitive Sci
- Direct For Social, Behav & Economic Scie [0962440] Funding Source: National Science Foundation
Uncertainty about fitness-enhancing traits in a potential mate, as well as variability in social and ecological environments, favors the use of multiple cues in selecting a partner. Though how individuals respond with adaptive mating preferences is an open question. Here we investigate mate choice decision making among the Makushi of Guyana and compare two competing approaches: 1) a prioritized trait approach, in which preferences are determined by the independent evaluation of relevant partner traits; and 2) an integrative approach, in which preferences are determined by reducing multiple, interrelated traits to a few latent dimensions. Within these two approaches we measure the effects of several key factors sex, adult sex ratio, and community-to-community variability thought to pattern preferences. We find support for cue integration and contextual variability in preferences. Sex and adult sex ratio are weak predictors of preferences in the Makushi: preferences are best explained by unstructured community effects. These findings highlight two key issues in mate choice studies: 1) simple biologically-based models do not seem adequate to explain variation in preferences, either within or among populations; and 2) while context, generally speaking, matters in determining preferences, we lack theoretically-informed predictions about relevant contextual factors. The importance of cues, as well as what they signal in a potential partner, is likely to vary with location-specific factors that are yet unexplored. (C) 2015 Elsevier Inc. All rights reserved.
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