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The impact of sex-role reversal on the diversity of the major histocompatibility complex: Insights from the seahorse ( Hippocampus abdominalis ) by Angela Bahr; Anthony B Wilson is a Biochemistry, Genetics and Molecular Biology article available to read on EtoBox.

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## Background Both natural and sexual selection are thought to influence genetic diversity, but the study of the relative importance of these two factors on ecologically-relevant traits has traditionally focused on species with conventional sex-roles, with male-male competition and female-based mate choice. With its high variability and significance in both immune function and olfactory-mediated mate choice, the major histocompatibility complex (MHC/MH) is an ideal system in which to evaluate the relative contributions of these two selective forces to genetic diversity. Intrasexual competition and mate choice are both reversed in sex-role reversed species, and sex-related differences in the detection and use of MH-odor cues are expected to influence the intensity of sexual selection in such species. The seahorse, __Hippocampus abdominalis__, has an exceptionally highly developed form of male parental care, with female-female competition and male mate choice. ## Results Here, we demonstrate that the sex-role reversed seahorse has a single MH class II beta-chain gene and that the diversity of the seahorse MHIIβ locus and its pattern of variation are comparable to those detected in sp

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Author

Angela Bahr; Anthony B Wilson

Publisher

BioMed Central; Springer (Biomed Central Ltd.); London: BioMed Central, 2001-; Springer Science and Business Media LLC (ISSN 1471-2148)

Published

2011

Language

EN

Field

Biochemistry, Genetics and Molecular Biology (Life Sciences)