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  Sexually opposite effects of testosterone on mating success in wild rock hyrax

Koren, L., Weissman, Y., Schnitzer, I., Beukeboom, R., Bar Ziv, E., Demartsev, V., et al. (2019). Sexually opposite effects of testosterone on mating success in wild rock hyrax. Behavioral Ecology, 30(6), 1611-1617. doi:10.1093/beheco/arz125.

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Genre: Journal Article

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Koren, L., Author
Weissman, Y., Author
Schnitzer, I., Author
Beukeboom, R., Author
Bar Ziv, E., Author
Demartsev, Vlad1, Author              
Barocas, A., Author
Ilany, A., Author
Geffen, E., Author
Affiliations:
1University of Konstanz, ou_persistent22              

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 Abstract: Although males and females share traits, their motivations and needs may be different, due to life-history disparities that lead to divergent selection pressures. Proximate mechanisms underlying differences between the sexes include hormones that mediate the development and activation of suites of traits. Testosterone is associated with morphological features, physiological processes, and social behaviors in both sexes. However, even if present in similar concentrations in the circulation, testosterone often affects males and females differently. We combined behavioral mating observations of the wild polygynandrous rock hyrax (Procavia capensis) with hair testosterone that represents long-term integrated levels. We found that whereas copulation success increases with the rise in testosterone in males it decreases in females. We did not find an association between testosterone and choosiness in either sex. However, we found that males with higher testosterone mate-guarded females with lower testosterone. Our findings show disassortative mating and mate-guarding in respect to testosterone and provide clues to the cost of testosterone for females, in terms of copulation success. These results open up intriguing questions relating to the role of testosterone in mediating a similar trade-off in male and female reproductive success.

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 Dates: 2019-11-01
 Publication Status: Published in print
 Pages: -
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 Rev. Type: -
 Identifiers: Other: WOS:000501728400012
DOI: 10.1093/beheco/arz125
ISSN: 1045-2249
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Title: Behavioral Ecology
Source Genre: Journal
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Publ. Info: New York, NY : Oxford University Press
Pages: - Volume / Issue: 30 (6) Sequence Number: - Start / End Page: 1611 - 1617 Identifier: ISSN: 1045-2249
CoNE: https://pure.mpg.de/cone/journals/resource/954925590416