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Begging scrambles with unequal chicks : interactions between need and competitive ability.

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Begging scrambles with unequal chicks : interactions between need and competitive ability. / Parker, Geoff A.; Royle, Nick J.; Hartley, Ian R.
In: Ecology Letters, Vol. 5, No. 2, 03.2002, p. 206-215.

Research output: Contribution to Journal/Magazine › Journal article › peer-review

Harvard

Parker, GA, Royle, NJ & Hartley, IR 2002, 'Begging scrambles with unequal chicks : interactions between need and competitive ability.', Ecology Letters, vol. 5, no. 2, pp. 206-215. https://doi.org/10.1046/j.1461-0248.2002.00301.x

APA

Parker, G. A., Royle, N. J., & Hartley, I. R. (2002). Begging scrambles with unequal chicks : interactions between need and competitive ability. Ecology Letters, 5(2), 206-215. https://doi.org/10.1046/j.1461-0248.2002.00301.x

Vancouver

Parker GA, Royle NJ, Hartley IR. Begging scrambles with unequal chicks : interactions between need and competitive ability. Ecology Letters. 2002 Mar;5(2):206-215. doi: 10.1046/j.1461-0248.2002.00301.x

Author

Parker, Geoff A. ; Royle, Nick J. ; Hartley, Ian R. / Begging scrambles with unequal chicks : interactions between need and competitive ability. In: Ecology Letters. 2002 ; Vol. 5, No. 2. pp. 206-215.

Bibtex

@article{4c49da7f69a04c5fa03bfa26b6187f66,
title = "Begging scrambles with unequal chicks : interactions between need and competitive ability.",
abstract = "When offspring compete for the attentions of provisioning parents, empirical and theoretical work has generally concluded that chicks honestly signal their {"}need{"} for resources and that parents control allocation. Here, we develop models to show that when allocation of food resources is determined by competitive begging scrambles between sibs, the offspring{\textquoteright}s ESS begging levels, shares of food and personal fitness gained will be determined by an interaction between their competitive abilities and their true needs. Many of the predictions of this scramble competition model are qualitatively very similar to models of honest signalling of need, where parents, not offspring, control the allocation of food. Consequently it will be difficult to distinguish between the two mechanisms of food allocation based on empirical observations of the responses of chicks to feeding by parents.",
author = "Parker, {Geoff A.} and Royle, {Nick J.} and Hartley, {Ian R.}",
year = "2002",
month = mar,
doi = "10.1046/j.1461-0248.2002.00301.x",
language = "English",
volume = "5",
pages = "206--215",
journal = "Ecology Letters",
issn = "1461-023X",
publisher = "Wiley",
number = "2",

}

RIS

TY - JOUR

T1 - Begging scrambles with unequal chicks : interactions between need and competitive ability.

AU - Parker, Geoff A.

AU - Royle, Nick J.

AU - Hartley, Ian R.

PY - 2002/3

Y1 - 2002/3

N2 - When offspring compete for the attentions of provisioning parents, empirical and theoretical work has generally concluded that chicks honestly signal their "need" for resources and that parents control allocation. Here, we develop models to show that when allocation of food resources is determined by competitive begging scrambles between sibs, the offspring’s ESS begging levels, shares of food and personal fitness gained will be determined by an interaction between their competitive abilities and their true needs. Many of the predictions of this scramble competition model are qualitatively very similar to models of honest signalling of need, where parents, not offspring, control the allocation of food. Consequently it will be difficult to distinguish between the two mechanisms of food allocation based on empirical observations of the responses of chicks to feeding by parents.

AB - When offspring compete for the attentions of provisioning parents, empirical and theoretical work has generally concluded that chicks honestly signal their "need" for resources and that parents control allocation. Here, we develop models to show that when allocation of food resources is determined by competitive begging scrambles between sibs, the offspring’s ESS begging levels, shares of food and personal fitness gained will be determined by an interaction between their competitive abilities and their true needs. Many of the predictions of this scramble competition model are qualitatively very similar to models of honest signalling of need, where parents, not offspring, control the allocation of food. Consequently it will be difficult to distinguish between the two mechanisms of food allocation based on empirical observations of the responses of chicks to feeding by parents.

U2 - 10.1046/j.1461-0248.2002.00301.x

DO - 10.1046/j.1461-0248.2002.00301.x

M3 - Journal article

VL - 5

SP - 206

EP - 215

JO - Ecology Letters

JF - Ecology Letters

SN - 1461-023X

IS - 2

ER -