Počet záznamů: 1
Nest defence in a cuckoo host: great reed warblers risk themselves equally for their own and parasitic chicks
0342465 - UBO-W 2011 RIV NL eng J - Článek v odborném periodiku
Honza, Marcel - Procházka, Petr - Šicha, Václav - Požgayová, Milica
Nest defence in a cuckoo host: great reed warblers risk themselves equally for their own and parasitic chicks.
Behaviour. Roč. 147, 5-6 (2010), s. 741-756 ISSN 0005-7959
Grant CEP: GA AV ČR IAA600930903; GA MŠk LC06073
Výzkumný záměr: CEZ:AV0Z60930519
Klíčová slova: brood parasitism * chick discrimination * cuckoo * mobbing * nest defence * nestlingnestling recognition * parental investment
Kód oboru RIV: EG - Zoologie
Impakt faktor: 1.480, rok: 2010
We investigated nest defence in great reed warblers (Acrocephalus arundinaceus) against three types of nest intruders while controlling for the number of chicks and the length of the nestling period. The most parsimonious linear mixed-effects model showed that the type of intruder and nest identity significantly explained variation in host aggression. Our results demonstrated that the hosts discriminated two predators from an innocuous species and that some nest owners consistently defended their nests more intensely than others. However, the birds did not differ in their responses in relation to the nest contents, indicating that neither the nestling species, nor the length of previous parental investment influenced the intensity of nest defence. Our findings are, therefore, in accordance with the general scarcity of chick discrimination by cuckoo hosts.
Trvalý link: http://hdl.handle.net/11104/0185196