Nestling discrimination without recognition: a possible defence mechanism for hosts towards cuckoo parasitism?

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15310%2F03%3A00003314" target="_blank" >RIV/61989592:15310/03:00003314 - isvavai.cz</a>

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Nestling discrimination without recognition: a possible defence mechanism for hosts towards cuckoo parasitism?

Original language description

One of the great evolutionary puzzles is why hosts of parasitic birds discriminate finely against alien eggs, but almost never discriminate against parasitic chicks. A theoretical model has shown that an adaptive host response to alien eggs can be basedon learning. However, learned nestling discrimination is too costly to be favoured by selection in hosts of evicting parasites, such as the European cuckoo (Cuculus canorus). Indeed, parasitic chick rejection has never been reported for any European cuckoo host. As learned nestling discrimination is maladaptive, one can expect that a viable alternative for hosts would be to use discrimination mechanisms not involving learning and/or recognition. We suggest that hosts may starve and desert cuckoo chicksthat require higher amounts of food than an average host brood at fledging (i.e., feeding rates to a parasite are outside the normal range of host behaviour in unparasitized nests). Our observations of the reed warbler (Acrocephalus scirp

Czech name

Diskriminace mláďat bez rozpoznávání: možný obranný mechanismus pro hostitele proti jejich hnízdním parazitům?

Czech description

Článek podává vůbec první doklady odmítání parazitických mláďat kukačky jejím hostitelem (rákosníkem obecným). Jsou zde také diskutovány možné proximátní mechanismy tohoto diskriminačního chování.

Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

EG - Zoology

OECD FORD branch

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Project

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Continuities

Z - Vyzkumny zamer (s odkazem do CEZ)

Publication year

2003

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Proceedings of the Royal Society of London Series B

ISSN

0962-8452

e-ISSN

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Volume of the periodical

270

Issue of the periodical within the volume

1

Country of publishing house

GB - UNITED KINGDOM

Number of pages

1

Pages from-to

"S73"-"S75"

UT code for WoS article

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EID of the result in the Scopus database

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