Počet záznamů: 1

Analysis of extra-pair paternity and conspecific brood parasitism in mallards Anas platyrhynchos using non-invasive techniques

  1. 1.
    0349457 - UBO-W 2011 RIV DK eng J - Článek v odborném periodiku
    Kreisinger, J. - Munclinger, P. - Javůrková, V. - Albrecht, Tomáš
    Analysis of extra-pair paternity and conspecific brood parasitism in mallards Anas platyrhynchos using non-invasive techniques.
    Journal of avian biology. Roč. 41, č. 5 (2010), s. 551-557 ISSN 0908-8857
    Grant CEP: GA AV ČR IAA6093403; GA MŠk LC06073
    Výzkumný záměr: CEZ:AV0Z60930519
    Klíčová slova: intraspecific nest parasitism * socially monogamous Passerines * sexual selection * microsatellite loci * breeding synchrony * genetic-markers * North-Dakota * birds * duck * evolution
    Kód oboru RIV: EG - Zoologie
    Impakt faktor: 2.310, rok: 2010

    A method that was based on non-invasive sampling of genetic material was used to determine the rates of extra-pair paternity (EPP) and conspecific brood parasitism (CBP) in mallards. Using 8 microsatelite loci, extra-pair offspring were detected in 48% of nests and accounted for 9.3% of all offspring. In addition, 10.1% of the offspring were confirmed to result from CBP, and 24% of all nests contained at least 1 offspring from CBP. Rates of conspecific nest parasitism were higher than those of related species, which might have been due to higher breeding densities at our study site. The incidence of EPP was distributed randomly throughout the population, indicating that variations in pre-copulatory (e.g. female choice, mate guarding) or post-copulatory processes do not affect the distribution of EPP among breeding pairs markedly. The occurrence of CBP and EPP was unaffected by the timing of the breeding attempt or breeding synchrony.
    Trvalý link: http://hdl.handle.net/11104/0189692