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Physiological and condition-related traits in the gynogenetic-sexual Carassius auratus complex: different investments promoting the coexistence of two reproductive forms?

SYSNO ASEP	0446366
Document Type	J - Journal Article
R&D Document Type	Journal Article
Subsidiary J	Článek ve WOS
Title	Physiological and condition-related traits in the gynogenetic-sexual Carassius auratus complex: different investments promoting the coexistence of two reproductive forms?
Author(s)	Šimková, A. (CZ) Hyršl, P. (CZ) Halačka, Karel (UBO-W)_{RID, SAI} Vetešník, Lukáš (UBO-W)_{RID, SAI, ORCID}
Number of authors	4
Source Title	BMC Evolutionary Biology. - : BioMed Central - ISSN 1471-2148 Roč. 15, č. 154 (2015), s. 154
Number of pages	14 s.
Language	eng - English
Country	GB - United Kingdom
Keywords	Carassius auratus ; gene expression ; growth
Subject RIV	EG - Zoology
R&D Projects	GAP505/12/0375 GA ČR - Czech Science Foundation (CSF)
Institutional support	UBO-W - RVO:68081766
UT WOS	000359185100001
EID SCOPUS	84938785209
DOI	10.1186/s12862-015-0438-6
Annotation	Carassius auratus complex is an extraordinary species complex including the diploid and polyploid forms exhibiting asexual and sexual reproduction modes. The coexistence of both forms in the same habitats is currently reported. The stable coexistence of asexual and sexual forms assumes some disadvantages for asexuals that balance the costs of sex. In our study, we hypothesized and tested the differences in physiological (including heamatological and immunological), growth-related, condition-related, and fitness-related traits between gynogenetic females and sexuals. Our study indicates that a similar amount of energy is invested by both gynogenetic and sexual females of C. auratus complex in reproductive behaviour. We suggest that lower aerobic performance in gynogens may represent their physiological disadvantage balancing the cost of sexual reproduction. A trade-off between the number of erythrocytes and the oxygen-carrying capacity per erythrocyte in sexual males and gynogenetic females may contribute to the coexistence of gynogenetic and sexual forms. In addition, the differences in specific immunity between gynogens and sexuals may also reduce the evolutionary disadvantage of sexual reproduction. In conclusion, we propose that several mechanisms contribute to the coexistence of the gynogenetic-sexual C. auratus complex.
Workplace	Institute of Vertebrate Biology
Contact	Hana Slabáková, slabakova@ivb.cz, Tel.: 543 422 524
Year of Publishing	2016

Number of the records: 1