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Male-female relatedness and patterns of male reproductive investment in guppies.
University of Manchester, UK.
2014 (English)In: Biology Letters, ISSN 1744-9561, E-ISSN 1744-957X, Vol. 10, no 5Article in journal (Refereed) Published
Abstract [en]

Inbreeding can cause reductions in fitness, driving the evolution of pre- and postcopulatory inbreeding avoidance mechanisms. There is now considerable evidence for such processes in females, but few studies have focused on males, particularly in the context of postcopulatory inbreeding avoidance. Here, we address this topic by exposing male guppies (Poecilia reticulata) to either full-sibling or unrelated females and determining whether they adjust investment in courtship and ejaculates. Our results revealed that males reduce their courtship but concomitantly exhibit short-term increases in ejaculate quality when paired with siblings. In conjunction with prior work reporting cryptic female preferences for unrelated sperm, our present findings reveal possible sexually antagonistic counter-adaptations that may offset postcopulatory inbreeding avoidance by females.

Place, publisher, year, edition, pages
2014. Vol. 10, no 5
National Category
Biological Sciences
Identifiers
URN: urn:nbn:se:su:diva-134150DOI: 10.1098/rsbl.2014.0166PubMedID: 24806425OAI: oai:DiVA.org:su-134150DiVA: diva2:1010371
Available from: 2016-10-03 Created: 2016-10-03 Last updated: 2017-11-09Bibliographically approved

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