Počet záznamů: 1
Effect of extra-pair paternity and parental quality on brood sex ratio in the scarlet rosefinch Carpodacus erythrinus
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SYSNO ASEP 0383938 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Effect of extra-pair paternity and parental quality on brood sex ratio in the scarlet rosefinch Carpodacus erythrinus Tvůrce(i) Poláková, Radka (UBO-W) RID, ORCID, SAI
Schnitzer, J. (CZ)
Vinkler, Michal (UBO-W) RID, ORCID
Bryja, Josef (UBO-W) RID, SAI, ORCID
Munclinger, P. (CZ)
Albrecht, Tomáš (UBO-W) RID, SAI, ORCIDCelkový počet autorů 6 Zdroj.dok. Folia zoologica. - : Ústav biologie obratlovců AV ČR, v. v. i. - ISSN 0139-7893
Roč. 61, 3-4 (2012), s. 225-232Poč.str. 8 s. Jazyk dok. eng - angličtina Země vyd. CZ - Česká republika Klíč. slova sex allocation ; extra-pair mating ; parental attractiveness Vědní obor RIV EG - Zoologie CEP LC06073 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy GA206/06/0851 GA ČR - Grantová agentura ČR Institucionální podpora UBO-W - RVO:68081766 UT WOS 000313606500005 EID SCOPUS 84872433540 Anotace The attractiveness hypothesis predicts that females should bias the sex ratio of their offspring towards sons when mated to attractive males. Females of many socially monogamous bird species commonly engage in extra-pair fertilizations (EPFs). Assuming that extra-pair males are more attractive to females than their social partners, and that sons inherit superior traits from their fathers, extra-pair young should be more likely males. According to the maternal condition hypothesis male-biased sex ratio in offspring should be also associated with better female body condition. We evaluated these ideas in the scarlet rosefinch (Carpodacus erythrinus), socially monogamous songbird with moderate level of extra-pair fertilizations. Contrary to the attractiveness hypothesis we have found no significant effect of paternity (within-pair or extra-pair) on the sex of individual offspring. Furthermore, data did not suggest that females mated to males with more elaborated plumage colour were more likely to produce sons. However, consistently with the maternal condition hypothesis, high-quality females produced more sons than daughters. Our results indicate that scarlet rosefinch females may not be able to manipulate the primary sex ratio of their offspring in relation to the attractiveness of their mate, but they may adjust it according to their own condition. Pracoviště Ústav biologie obratlovců Kontakt Hana Slabáková, slabakova@ivb.cz, Tel.: 543 422 524 Rok sběru 2013
Počet záznamů: 1