Signalling of need by offspring to their parents
@article{Godfray1991SignallingON, title={Signalling of need by offspring to their parents}, author={H. C. J. Godfray}, journal={Nature}, year={1991}, volume={352}, pages={328-330}, url={https://api.semanticscholar.org/CorpusID:4288527} }
An alternative explanation for costly solicitation is presented by showing that the level of offspring solicitation can be a true reflection of offspring need as long as solicitation is costly and the benefits of extra resources increase with need.
643 Citations
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Biology
It is suggested that begging may have evolved through direct sibling fighting before the establishment of a parental response, that is, that nonsignaling squabbling leads to signaling.
Costly Solicitation, Timing of Offspring Conflict, and Resource Allocation in Plants
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Biology, Environmental Science
The theory of parent–offspring conflict is extended to plants that produce many offspring in one reproductive event and it is found that the more resources are allocated to individual offspring before the occurrence of offspring solicitation, the less offspring should solicit, and hence the closer the offspring size to the parental optimum.
Begging in Nestling Birds
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Biology
Nesting begging arises from the theoretical conflict over resource allocation between parents and their offspring, and any offspring signaling a “dishonest” (excessive) level of need would benefit from receiving a level of parental investment.
Begging signals and parent–offspring conflict: do parents always win?
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Psychology
Apparently costly begging behaviour has recently been explained as a means by which offspring communicate their need, allowing parents to provide them with a level of resource equal to that which…
Screaming as a strategy to reduce the predation risk incurred by begging
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Biology
Comparative analyses supported the prediction postulating that species in which nestlings scream in the presence of a predator produce begging calls that are more conspicuous to predators than calls of non-screaming species, suggesting that the predation cost of begging lies not only in terms of predation per se but also in the requirement of anti-predator strategies.
Evolution of parental care driven by mutual reinforcement of parental food provisioning and sibling competition
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Biology
A mathematical model is developed that finds that the evolution of food provisioning prompts evolutionary changes in other components of care by allowing parents to choose safer nest sites, and that it promotes the evolutionof sibling competition, which in turn further drives the Evolution of parental food Provisioning.
Maternal care and offspring begging in social insects: chemical signalling, hormonal regulation and evolution
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Biology, Environmental Science
Sibling conflict and dishonest signaling in birds
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Biology
It is found that offspring are less honest about their level of need when (i) they face competition from current siblings; (ii) their parents are likely to breed again, and so they are in competition with future siblings; and (iii) parental divorce or death means that they are likely be less related to future siblings.
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Biology
By varying their 'begging patch' value, parents may exploit competitive inter-sibling dynamics to influence the outcome of competition among chick phenotypes (e.g. 'need', size, sex). Parent birds may thereby exert considerable control over the information content of chick begging behaviour.
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A model for the evolution of begging is discussed, and the average (or typical) rate of begging and the rate of change of begging intensity with changes in parental investment are allowed to evolve.
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The terms "handicapped" and "selfish" are used interchangeably although it is realized that, in a behavioral sense, a selfish individual may not be handicapped and therefore, the delayed attainment of maturity at the expense of present or future sibs may be regarded as selfish.
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