Do predator energy demands or previous exposure influence protection by aposematic coloration of prey?

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60076658%3A12310%2F17%3A43895383" target="_blank" >RIV/60076658:12310/17:43895383 - isvavai.cz</a>

Result on the web

<a href="https://academic.oup.com/cz/article/63/3/259/3057022/Do-predator-energy-demands-or-previous-exposure" target="_blank" >https://academic.oup.com/cz/article/63/3/259/3057022/Do-predator-energy-demands-or-previous-exposure</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1093/cz/zow057" target="_blank" >10.1093/cz/zow057</a>

Result language

angličtina

Original language name

Do predator energy demands or previous exposure influence protection by aposematic coloration of prey?

Original language description

Growing evidence exists that aposematic and toxic prey may be included in a predator&apos;s diet when the predator experiences physiological stress. The tree sparrow Passer montanus is known to have a significant portion of aposematic and toxic ladybirds in its natural diet. Here, we present experiments testing the attack and eating rate of the tree sparrow toward the invasive aposematic harlequin ladybird Harmonia axyridis. We wondered whether the sparrow&apos;s ability to prey on native ladybirds predisposes them to also prey on harlequin ladybirds. We compared the attack and eating rates of tree sparrows of particular age and/or experience classes to test for any changes during ontogeny (hand-reared x young wild-caught x adult wild-caught) and with differing perceived levels of physiological stress (summer adult x winter adult). Winter adult tree sparrows commonly attacked and ate the offered ladybirds with no evidence of disgust or metabolic difficulties after ingestion. Naive and wild immature tree sparrows attacked the ladybirds but hesitated to eat them. Adult tree sparrows caught in the summer avoided attacking the ladybirds. These results suggest that tree sparrows are able to cope with chemicals ingested along with the ladybirds. This preadaptation enables them to include ladybirds in their diet; though they commonly do this only in times of shortage in insect availability (winter). Young sparrows showed avoidance toward the chemical protection of the ladybirds.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

10614 - Behavioral sciences biology

Project

<a href="/en/project/QH82047" target="_blank" >QH82047: Invasive ladybird Harmonia axyridis - contribution to biological protection of plants or a threat for biodiversity?</a><br>

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2017

Confidentiality

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

Name of the periodical

Current Zoology

ISSN

1674-5507

e-ISSN

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Volume of the periodical

63

Issue of the periodical within the volume

3

Country of publishing house

CN - CHINA

Number of pages

9

Pages from-to

259-267

UT code for WoS article

000402561200004

EID of the result in the Scopus database

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