Male mate choice relies on major histocompatibility complex class I in a sex-role-reversed pipefish.

Roth, Olivia, Sundin, J., Berglund, A., Rosenqvist, G. and Wegner, K. M. (2014) Male mate choice relies on major histocompatibility complex class I in a sex-role-reversed pipefish. Journal of Evolutionary Biology, 27 (5). pp. 929-938. DOI 10.1111/jeb.12365.

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Abstract

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.

Document Type: Article
Additional Information: WOS:000334966800012
Keywords: mutual mate choice; immune defence; major histocompatibility complex; parental care; parasite
Research affiliation: OceanRep > GEOMAR > FB3 Marine Ecology > FB3-EV Marine Evolutionary Ecology
AWI
Refereed: Yes
Open Access Journal?: No
DOI etc.: 10.1111/jeb.12365
ISSN: 1010-061X
Date Deposited: 30 May 2014 08:14
Last Modified: 09 Jul 2019 13:29
URI: http://oceanrep.geomar.de/id/eprint/24657

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