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Evolutionary Trace-Off between Seconcary Sexual Traits and Ejaculates
Stockholm University, Faculty of Science, Department of Zoology.
Number of Authors: 32017 (English)In: Trends in Ecology & Evolution, ISSN 0169-5347, E-ISSN 1872-8383, Vol. 32, no 12, p. 964-976Article, review/survey (Refereed) Published
Abstract [en]

Recent theoretical models predict that the evolutionary diversification of the weapons and ornaments of pre-mating sexual selection should be influenced by trade-offs with male expenditure on ejaculates. However, the patterns of association between secondary sexual traits and ejaculate expenditure are frequently inconsistent in their support of this prediction. We show why consideration of additional life-history, ecological, and mating-system variables is crucial for the interpretation of associations between secondary sexual traits and ejaculate production. Incorporation of these 'missing variables' provides evidence that interactions between pre- and post-mating sexual selection can underlie broad patterns of diversification in male weapons and ornaments. We call for more experimental and genetic approaches to uncover trade-offs, as well as for studies that consider the costs of mate-searching.

Place, publisher, year, edition, pages
2017. Vol. 32, no 12, p. 964-976
National Category
Biological Sciences
Identifiers
URN: urn:nbn:se:su:diva-149948DOI: 10.1016/j.tree.2017.09.011ISI: 000415306100015PubMedID: 29050795OAI: oai:DiVA.org:su-149948DiVA, id: diva2:1170400
Available from: 2018-01-03 Created: 2018-01-03 Last updated: 2018-01-03Bibliographically approved

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