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Male mate choice relies on major histocompatibility complex class I in a sex-role-reversed pipefish
Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Ecology and Genetics, Animal ecology.
Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Ecology and Genetics, Animal ecology.
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2014 (English)In: Journal of Evolutionary Biology, ISSN 1010-061X, E-ISSN 1420-9101, Vol. 27, no 5, 929-938 p.Article in journal (Refereed) Published
Abstract [en]

Mate choice for compatible genes is often based on genes of the major histocompatibility complex (MHC). Although MHC-based mate choice is commonly observed in female choice, male mate choice remains elusive. In particular, if males have intense paternal care and are thus the choosing sex, male choice for females with dissimilar MHC can be expected. Here, we investigated whether male mate choice relies on MHC class I genes in the sex-role reversed pipefish Syngnathus typhle. In a mate choice experiment, we determined the relative importance of visual and olfactory cues by manipulating visibility and olfaction. We found that pipefish males chose females that maximize sequence-based amino acid distance between MHC class I genotypes in the offspring when olfactory cues were present. Under visual cues, large females were chosen, but in the absence of visual cues, the choice pattern was reversed. The use of sex-role reversed species thus revealed that sexual selection can lead to the evolution of male mate choice for MHC class I genes.

Place, publisher, year, edition, pages
2014. Vol. 27, no 5, 929-938 p.
Keyword [en]
mutual mate choice, immune defence, major histocompatibility complex, parental care, parasite
National Category
Ecology
Identifiers
URN: urn:nbn:se:uu:diva-225001DOI: 10.1111/jeb.12365ISI: 000334966800012OAI: oai:DiVA.org:uu-225001DiVA: diva2:719683
Available from: 2014-05-26 Created: 2014-05-26 Last updated: 2017-12-05Bibliographically approved

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Sundin, JosefinBerglund, Anders

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