MHC genes and parasitism in Carassius gibelio, a diploid-triploid fish species with dual reproduction strategies

0393165 - ÚBO 2014 RIV GB eng J - Journal Article
Šimková, A. - Košař, M. - Vetešník, Lukáš - Vyskočilová, M.
MHC genes and parasitism in Carassius gibelio, a diploid-triploid fish species with dual reproduction strategies.
BMC Evolutionary Biology. Roč. 13, č. 122 (2013), s. 122. ISSN 1471-2148. E-ISSN 1471-2148
R&D Projects: GA ČR GAP505/12/0375
Institutional support: RVO:68081766
Keywords : gynogenesis * sexual reproduction * polyploid fish * MHC * coexistence * parasitism
Subject RIV: EG - Zoology
Impact factor: 3.407, year: 2013
http://www.biomedcentral.com/1471-2148/13/122

The gibel carp is a fish species with dual reproduction modes, gynogenesis and sexual reproduction, coexisting in mixed diploid-polyploid populations. The differences in MHC diversity between gynogenetic triploids and sexual diploids are in accordance with the hypothesis of sexually-mediated selection increasing MHC diversity and fulfil a prerequisite of the Red Queen hypothesis. The different patterns in PSS between gynogens and sexual gibel carp also suggest the potential role of sexual selection and supports parasite-mediated selection maintaining MHC diversity. We showed that the most common MHC genotypes of gynogenetic triploids are the target of parasite selection. Our results suggest that the MHC genotype in gibel carp is more important than allelic number for immunocompetence.
Permanent Link: http://hdl.handle.net/11104/0221904