|
ИСТИНА |
Войти в систему Регистрация |
ИСТИНА ИНХС РАН |
||
Extra-pair parents and chicks in Pied Flycatchers: do they have any peculiarities?тезисы доклада
- Авторы: Bushuev A.V., Belokon M.M., Belokon Y.S., Ilyina T.A., Ivankina E.V., Rogovin K.A., Stoilova K., Kerimov A.B.
- Сборник: Abstract Volume 10th Conference of the European Ornithologists Union (Badajoz, Spain 24-28 August 2015)
- Тезисы
- Год издания: 2015
- Место издания: University of Extremadura Badajoz, Spain
- Первая страница: 190
- Последняя страница: 191
- Аннотация: Understanding the function of extra-pair paternity (EPP) should be based on three sets of comparisons between features of: 1) cuckolded and extra-pair males; 2) females with and without extra-pair chicks; 3) within-pair and extra-pair chicks. We analysed EPP in Pied Flycatcher (Ficedula hypoleuca) population in Moscow region. Pied Flycatcher males have two peculiarities, which are of a great interest for revealing the adaptive role of EPP, - polymorphism of breeding plumage and combination of monogamy and polygamy. The chicks in 74% of broods were genetic offspring of their social parents. Old females (but not old social males) more often reared extra-pair chicks than the young ones. The colouration of males was not related with the presence of extra-pair chicks in their nests, but the number of extra-pair chicks tended to be higher in broods of pale males. Extra-pair males and cuckolded ones did not differ by age and colouration. Asymptotic body weight of extrapair chicks was higher than that of within-pair chicks. The latter relation and inclination of experienced females to extra-pair copulations give additional arguments in favour of adaptive role of EPP.
- Добавил в систему: Бушуев Андрей Владимирович