Consistent individual and sex-specific differences in behaviour of common cuckoo chicks: is there a potential impact on host-parasite coevolutionary dynamics?

0506474 - ÚBO 2019 RIV NL eng J - Článek v odborném periodiku
Trnka, A. - Samaš, Peter - Grim, T.
Consistent individual and sex-specific differences in behaviour of common cuckoo chicks: is there a potential impact on host-parasite coevolutionary dynamics?
Behaviour. Roč. 155, č. 13-15 (2018), s. 1051-1072. ISSN 0005-7959. E-ISSN 1568-539X
Grant CEP: GA ČR(CZ) GA17-12262S
Klíčová slova: breath rate * common cuckoo * great reed warblers * handling aggression * behavioural consistency
Obor OECD: Zoology
Impakt faktor: 1.401, rok: 2018

Research on brood parasitism has focused primarily on specific host anti-parasite behaviours and parasite counter-adaptations, and little is known about other aspects of their behaviours such as consistent behavioural differences between individuals. Therefore, we examined consistency in behaviour of nestlings of common cuckoos (Cuculus canorus) raised by great reed warblers (Acrocephalus arundinaceus). Cuckoo chicks showed high repeatability of both aggressive behaviour and breath rate, and both traits were strongly correlated with each other. This represents the first evidence for consistent differences in behaviour among avian brood parasites. Males were consistently more aggressive and less stressed than females. Nestlings of both sexes that hatched later in the season exhibited higher levels of aggression and lower stress responses than nestlings hatched earlier. This suggests that rearing conditions (e.g., food availability and quality) may modulate stress and aggressive phenotypes of brood parasites. We discuss potential effects of the observed patterns on host-parasite dynamics.
Trvalý link: http://hdl.handle.net/11104/0297707