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The dicey dinner dilemma: asymmetry in predator-prey risk-taking, a broadly-applicable alternative to the life-dinner principle

Research output: Contribution to journalArticle

DOI

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The dicey dinner dilemma : asymmetry in predator-prey risk-taking, a broadly-applicable alternative to the life-dinner principle. / Humphreys, Rosalind K.; Ruxton, Graeme D.

In: Journal of Evolutionary Biology, Vol. Early View, 29.01.2020.

Research output: Contribution to journalArticle

Harvard

Humphreys, RK & Ruxton, GD 2020, 'The dicey dinner dilemma: asymmetry in predator-prey risk-taking, a broadly-applicable alternative to the life-dinner principle', Journal of Evolutionary Biology, vol. Early View. https://doi.org/10.1111/jeb.13585

APA

Humphreys, R. K., & Ruxton, G. D. (2020). The dicey dinner dilemma: asymmetry in predator-prey risk-taking, a broadly-applicable alternative to the life-dinner principle. Journal of Evolutionary Biology, Early View. https://doi.org/10.1111/jeb.13585

Vancouver

Humphreys RK, Ruxton GD. The dicey dinner dilemma: asymmetry in predator-prey risk-taking, a broadly-applicable alternative to the life-dinner principle. Journal of Evolutionary Biology. 2020 Jan 29;Early View. https://doi.org/10.1111/jeb.13585

Author

Humphreys, Rosalind K. ; Ruxton, Graeme D. / The dicey dinner dilemma : asymmetry in predator-prey risk-taking, a broadly-applicable alternative to the life-dinner principle. In: Journal of Evolutionary Biology. 2020 ; Vol. Early View.

Bibtex - Download

@article{c9f469f15a10447eb49be60995b35d69,
title = "The dicey dinner dilemma: asymmetry in predator-prey risk-taking, a broadly-applicable alternative to the life-dinner principle",
abstract = "Forty years ago, the {\textquoteleft}life‐dinner principle{\textquoteright} was proposed as an example of an asymmetry that may lead prey species to experience stronger selection than their predators, thus accounting for the high frequency with which prey escape alive from interaction with a predator. This principle remains an influential concept in the scientific literature, despite several works suggesting that the concept relies on many under‐appreciated assumptions and does not apply as generally as was initially proposed. Here, we present a novel model describing a very different asymmetry to that proposed in the life‐dinner principle, but one that could apply broadly. We argue that asymmetries between the relative costs and benefits to predators and prey of selecting a risky behaviour during an extended predator–prey encounter could lead to an enhanced likelihood of escape for the prey. Any resulting advantage to prey depends upon there being a behaviour or choice that introduces some inherent danger to both predator and prey if they adopt it, but which if the prey adopts the predator must match in order to have a chance of successful predation. We suggest that the circumstances indicated by our model could apply broadly across diverse taxa, including both risky spatial or behavioural choices.",
keywords = "Arms-race, Behavioural ecology, Evolution, Life-dinner principle, Predator-prey interaction, Risk-taking",
author = "Humphreys, {Rosalind K.} and Ruxton, {Graeme D.}",
note = "RKH is grateful to both the University of St Andrews and the Perry Foundation for funding.",
year = "2020",
month = jan,
day = "29",
doi = "10.1111/jeb.13585",
language = "English",
volume = "Early View",
journal = "Journal of Evolutionary Biology",
issn = "1010-061X",
publisher = "John Wiley & Sons, Ltd (10.1111)",

}

RIS (suitable for import to EndNote) - Download

TY - JOUR

T1 - The dicey dinner dilemma

T2 - asymmetry in predator-prey risk-taking, a broadly-applicable alternative to the life-dinner principle

AU - Humphreys, Rosalind K.

AU - Ruxton, Graeme D.

N1 - RKH is grateful to both the University of St Andrews and the Perry Foundation for funding.

PY - 2020/1/29

Y1 - 2020/1/29

N2 - Forty years ago, the ‘life‐dinner principle’ was proposed as an example of an asymmetry that may lead prey species to experience stronger selection than their predators, thus accounting for the high frequency with which prey escape alive from interaction with a predator. This principle remains an influential concept in the scientific literature, despite several works suggesting that the concept relies on many under‐appreciated assumptions and does not apply as generally as was initially proposed. Here, we present a novel model describing a very different asymmetry to that proposed in the life‐dinner principle, but one that could apply broadly. We argue that asymmetries between the relative costs and benefits to predators and prey of selecting a risky behaviour during an extended predator–prey encounter could lead to an enhanced likelihood of escape for the prey. Any resulting advantage to prey depends upon there being a behaviour or choice that introduces some inherent danger to both predator and prey if they adopt it, but which if the prey adopts the predator must match in order to have a chance of successful predation. We suggest that the circumstances indicated by our model could apply broadly across diverse taxa, including both risky spatial or behavioural choices.

AB - Forty years ago, the ‘life‐dinner principle’ was proposed as an example of an asymmetry that may lead prey species to experience stronger selection than their predators, thus accounting for the high frequency with which prey escape alive from interaction with a predator. This principle remains an influential concept in the scientific literature, despite several works suggesting that the concept relies on many under‐appreciated assumptions and does not apply as generally as was initially proposed. Here, we present a novel model describing a very different asymmetry to that proposed in the life‐dinner principle, but one that could apply broadly. We argue that asymmetries between the relative costs and benefits to predators and prey of selecting a risky behaviour during an extended predator–prey encounter could lead to an enhanced likelihood of escape for the prey. Any resulting advantage to prey depends upon there being a behaviour or choice that introduces some inherent danger to both predator and prey if they adopt it, but which if the prey adopts the predator must match in order to have a chance of successful predation. We suggest that the circumstances indicated by our model could apply broadly across diverse taxa, including both risky spatial or behavioural choices.

KW - Arms-race

KW - Behavioural ecology

KW - Evolution

KW - Life-dinner principle

KW - Predator-prey interaction

KW - Risk-taking

U2 - 10.1111/jeb.13585

DO - 10.1111/jeb.13585

M3 - Article

VL - Early View

JO - Journal of Evolutionary Biology

JF - Journal of Evolutionary Biology

SN - 1010-061X

ER -

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