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Titolo:
Pyrazine odour makes visually conspicuous prey aversive
Autore:
Lindstrom, L; Rowe, C; Guilford, T;
Indirizzi:
Univ Jyvaskyla, Dept Biol & Environm Sci, FIN-40351 Jyvaskyla, Finland Univ Jyvaskyla Jyvaskyla Finland FIN-40351 FIN-40351 Jyvaskyla, Finland Univ Newcastle Upon Tyne, Dept Psychol, Newcastle Upon Tyne NE1 7RU, Tyne & Wear, England Univ Newcastle Upon Tyne Newcastle Upon Tyne Tyne & Wear England NE1 7RU Univ Oxford, Dept Zool, Oxford OX1 3PS, England Univ Oxford Oxford England OX1 3PS d, Dept Zool, Oxford OX1 3PS, England
Titolo Testata:
PROCEEDINGS OF THE ROYAL SOCIETY OF LONDON SERIES B-BIOLOGICAL SCIENCES
fascicolo: 1463, volume: 268, anno: 2001,
pagine: 159 - 162
SICI:
0962-8452(20010122)268:1463<159:POMVCP>2.0.ZU;2-J
Fonte:
ISI
Lingua:
ENG
Soggetto:
COLORED INSECT PREY; WARNING COLORATION; DISTASTEFUL PREY; DOMESTIC CHICKS; SIGNALS; EVOLUTION; PREDATORS; RESPONSES; COMMUNICATION;
Keywords:
aposematism; conspicuousness; hidden bias; pyrazine; receiver psychology;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
29
Recensione:
Indirizzi per estratti:
Indirizzo: Lindstrom, L Univ Jyvaskyla, Dept Biol & Environm Sci, POB 35, FIN-40351 Jyvaskyla, Finland Univ Jyvaskyla POB 35 Jyvaskyla Finland FIN-40351 a, Finland
Citazione:
L. Lindstrom et al., "Pyrazine odour makes visually conspicuous prey aversive", P ROY SOC B, 268(1463), 2001, pp. 159-162

Abstract

Unpalatable insects frequently adopt multimodal signals to ward off predators, incorporating sounds and odours into their colourful displays. Pyrazine is an odour commonly used in insect warning displays, and has previously been shown to elicit unlearned biases against common warning colours, e.g. yellow and red in naive predators. We designed two experiments to test for similar effects of pyrazine on the conspicuousness of prey, perhaps the most ubiquitous aspect of aposematic coloration. In the first experiment, we offered predators (Gallus gallus domesticus) a choice between conspicuous crumbs and cryptic crumbs in the presence or absence of pyrazine. In the second experiment, we manipulated the birds' experience of conspicuous prey during an initial training phase. Only in the presence of pyrazine did birds show a bias against conspicuously coloured food, and this occurred whether or not they had previously experienced food that contrasted with the background This emergent behaviour relied upon the visual and odorous signal components being presented together. These unlearned, yet hidden, responses against conspicuousness demonstrate that there are initial benefits to prey being conspicuous when the multimodal nature of warning signals is accounted for.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 19/09/20 alle ore 21:09:03