Počet záznamů: 1
Physiological and condition-related traits in the gynogenetic-sexual Carassius auratus complex: different investments promoting the coexistence of two reproductive forms?
- 1.0446366 - ÚBO 2016 RIV GB eng J - Článek v odborném periodiku
Šimková, A. - Hyršl, P. - Halačka, Karel - Vetešník, Lukáš
Physiological and condition-related traits in the gynogenetic-sexual Carassius auratus complex: different investments promoting the coexistence of two reproductive forms?
BMC Evolutionary Biology. Roč. 15, č. 154 (2015), s. 154. ISSN 1471-2148. E-ISSN 1471-2148
Grant CEP: GA ČR GAP505/12/0375
Institucionální podpora: RVO:68081766
Klíčová slova: Carassius auratus * gene expression * growth
Kód oboru RIV: EG - Zoologie
Impakt faktor: 3.406, rok: 2015
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.
Trvalý link: http://hdl.handle.net/11104/0248369
Název souboru Staženo Velikost Komentář Verze Přístup 0446366.pdf 0 1.2 MB Vydavatelský postprint povolen
Počet záznamů: 1