An experimental test of the information model for negotiation of biparental care.
An experimental test of the information model for negotiation of biparental care.
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DOI:
10.1371/journal.pone.0019684
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发表时间:
2011
期刊:
影响因子:
3.7
通讯作者:
Hatchwell BJ
中科院分区:
文献类型:
--
作者:
Meade J;Nam KB;Lee JW;Hatchwell BJ
Theoretical modelling of biparental care suggests that it can be a stable strategy if parents partially compensate for changes in behaviour by their partners. In empirical studies, however, parents occasionally match rather than compensate for the actions of their partners. The recently proposed “information model” adds to the earlier theory by factoring in information on brood value and/or need into parental decision-making. This leads to a variety of predicted parental responses following a change in partner work-rate depending on the information available to parents. We experimentally test predictions of the information model using a population of long-tailed tits. We show that parental information on brood need varies systematically through the nestling period and use this variation to predict parental responses to an experimental increase in partner work-rate via playback of extra chick begging calls. When parental information is relatively high, partial compensation is predicted, whereas when parental information is low, a matching response is predicted. We find that although some responses are consistent with predictions, parents match a change in their partner's work-rate more often than expected and we discuss possible explanations for our findings.
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