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

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14310%2F13%3A00066956" target="_blank" >RIV/00216224:14310/13:00066956 - isvavai.cz</a>
Alternative codes found
RIV/68081766:_____/13:00393165
Result on the web
<a href="http://dx.doi.org/10.1186/1471-2148-13-122" target="_blank" >http://dx.doi.org/10.1186/1471-2148-13-122</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1186/1471-2148-13-122" target="_blank" >10.1186/1471-2148-13-122</a>

Result language
angličtina
Original language name
MHC genes and parasitism in Carassius gibelio, a diploid-triploid fish species with dual reproduction strategies
Original language description
Background The gibel carp is a fish species with dual reproduction modes, gynogenesis and sexual reproduction, coexisting in mixed diploid-polyploid populations. Following the Red Queen (RQ) assumption, asexual organisms are, due to their low genetic diversity, targets for parasite adaptation. Because MHC polymorphism is maintained by selection from parasites and sexual selection, MHC genes are considered as a suitable candidate for testing the RQ hypothesis. In this study, we investigated MHC variability and the selection pressure acting on MHC genes in sexual diploids and asexual triploids. In addition, we tested whether the asexual form of gibel carp suffers from higher parasite loads than the sexual form. Results At the population level, genotype and allelic diversity of MHC were reduced in gynogenetic triploids when compared to sexual diploids. Different patterns in positively selected sites (PSS) between gynogens and sexual gibel carp were also found.
Czech name
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Czech description
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Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
EG - Zoology
OECD FORD branch
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Project
<a href="/en/project/GAP505%2F12%2F0375" target="_blank" >GAP505/12/0375: Evolutionary-immunological and ecological aspects of parasitism in hybrid and polyploid cyprinid fish</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2013
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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