Parental effort and response to nestling begging in the house sparrow: repeatability, heritability and parent-offspring co-evolution
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چکیده
منابع مشابه
Parental effort and response to nestling begging in the house sparrow: repeatability, heritability and parent-offspring co-evolution.
Parental effort has a direct impact on individual fitness. Theoretical models exploring how parental effort evolves to cope with offspring demand and sexual conflicts may differ in the assumptions they make in respect to the genetic heritability of parental behaviours. Only a few attempts, however, have been made to estimate the heritability of parental behaviours and their possible co-evolutio...
متن کاملHeritability of nestling begging intensity in the house sparrow (Passer domesticus).
Evolutionary theory of parent-offspring conflict assumes that offspring food solicitation behavior, known as begging, and parental response to begging are subjected to selection and coevolution. This assumption implies that begging intensity should be heritable, at least to some degree. Although some studies have suggested that begging is heritable, the evidence for this is rare and mostly indi...
متن کاملThermal Imaging of House Sparrow Nestlings: the Effect of Begging Behavior and Nestling Rank
We used infrared imaging to test whether the energetic cost of begging is observable in changes in body surface temperature (Ts) of young House Sparrow nestlings (Passer domesticus), and whether Ts is affected by nestling rank. Begging had a mixed effect on Ts, increasing it slightly at first, but decreasing it when hungry nestlings begged more vigorously. This mixed effect may result from heat...
متن کاملThe adaptive value of parental responsiveness to nestling begging.
Despite extensive theoretical and empirical research into offspring food solicitation behaviour as a model for parent-offspring conflict and communication, the adaptive value of parental responsiveness to begging has never been tested experimentally. Game theory models, as well as empirical studies, suggest that begging conveys information on offspring state, which implies that parental investm...
متن کاملThe energetic cost of begging behaviour in nestling house wrens.
This study presents data relevant to the hypothesis that the energy expenditure associated with begging influences the signalling of need by nestling birds. We used open-circuit respirometry to measure the energy costs of resting, begging and non-begging activities in nestling house wrens, Troglodytes aedon, ranging in age from 1 to 11 days post-hatching. Across all ages, begging caused a 27% i...
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ژورنال
عنوان ژورنال: Journal of Evolutionary Biology
سال: 2010
ISSN: 1010-061X
DOI: 10.1111/j.1420-9101.2010.02023.x