Predation Risk and Life Histories

Bednekoff, Peter A.

doi:10.1016/b978-0-12-809633-8.90113-4

Cited by 2 publications

(2 citation statements)

References 21 publications

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“…Parents face a trade-off between maintaining an appropriate level of parental care and reducing predation risk, both for themselves and their offspring [3,4]. Therefore, evolution has favored different parental behavioral strategies to reduce the risk of predation while maximizing reproductive success [5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Assessing behavioral sex differences to chemical cues of predation risk while provisioning nestlings in a hole-nesting bird

Saavedra

Tomás

Amo

2022

Preprint

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Birds can assess nest predation risk and adjust their parental activity accordingly. Risk taking behavior should be related to investment in reproduction as well as to confidence in parenthood that often differ between sexes. In those cases, sexual differences in risk taking behavior may be expected. For example, in blue tits, females invest more time and energy than males in nest-building, egg laying and incubation. Furthermore, confidence in parenthood is supposed to be higher for females, as extrapair paternity is common in this species. Therefore, the reproductive value of nestlings may be higher for females than for males and the former may assume greater risks to ensure nestling growth and maximize their reproductive success. We examined potential sexual differences in the risk assumed by parents in relation to perceived risk of predation inside the nest cavity, where predation risk perception may be higher. We increased perceived predation risk by adding predator chemical cues inside blue tit (Cyanistes caeruleus) nest-boxes, and we tested whether female and male parents differed in the risk assumed when taking care of nestlings. Females and males did not differ in the risk assumed in response to perceived predation risk. However, females reduced time devoted to nest sanitation activities when predator chemical cues were detected inside the nest-box, likely as an anti-predatory strategy to minimize their own risk of predation. Therefore, these results add to the evidence that birds can detect chemical cues of predators inside the nest cavity and suggest that the behavioral response to an increase in risk of predation perceived through olfactory cues is not sex-dependent in blue tit.

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Section: Introductionmentioning

confidence: 99%

Assessing behavioral sex differences to chemical cues of predation risk while provisioning nestlings in a hole-nesting bird

Saavedra

Tomás

Amo

2022

Preprint

View full text Add to dashboard Cite

show abstract

“…Parents face a trade-off between maintaining an appropriate level of parental care and reducing predation risk, both for themselves and their offspring [ 3 , 4 ]. Therefore, evolution has favored different parental behavioral strategies to reduce the risk of predation while maximizing reproductive success [ 5 – 7 ].…”

Section: Introductionmentioning

confidence: 99%