Adaptive individual variation in phenological responses to perceived predation levels

Abbey-Lee, Robin N.; Dingemanse, Niels Jeroen

doi:10.1038/s41467-019-09138-5

Cited by 32 publications

(39 citation statements)

References 49 publications

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“…Videos were subsequently scored by dividing the cage into six equal sections and three floor sections as described in (Stuber et al 2013). Exploration score was calculated as the sum of movements the individual did between these sections (Abbey-Lee and Dingemanse 2019; Dingemanse et al 2020).…”

Section: Methodsmentioning

confidence: 99%

Repeatable differences in exploratory behaviour predict tick infestation probability in wild great tits

Rollins¹,

Mouchet²,

Margos

et al. 2020

Preprint

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Ticks are parasites that feed on the blood of various vertebrate hosts, including many species of bird. Birds can disperse ticks over short and long distances, therefore impacting tick population dynamics. The likelihood that birds attract ticks should depend on their behaviour and the environment. We studied various key ecological variables (breeding density, human disturbance) and phenotypic traits (exploratory behaviour; body condition) proposed to predict tick burden in great tits (Parus major). Our study spanned over three years and 12 human-recreated plots, equipped with nest-boxes in southern Germany. Adult breeders were assessed for exploratory behaviour, tick burden, and body condition. For each plot, human disturbance was quantified as a human recreational pressure index during biweekly nest box inspections by scoring the number of recreants using the plots. Infestation probability but not tick burden increased with exploratory behaviour. We also found moderate support for a positive effect of recreational pressure on infestation probability. Further, body condition negatively predicted tick burden. Individuals were repeatable in tick burden across years. Our study implies that infestation probability and tick burden are governed by distinct ecological and phenotypic drivers. Our findings also highlight the importance of incorporating ecological and individual variation in host phenotypes to predict spatiotemporal distributions of ticks in nature.

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Section: Methodsmentioning

confidence: 99%

Repeatable differences in exploratory behaviour predict tick infestation probability in wild great tits

Rollins¹,

Mouchet²,

Margos

et al. 2020

Preprint

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“…In Welsh populations, behaviours associated with predation risk (aggressiveness, exploration, predator-inspection) were more tightly correlated within six populations with a history of fish predation than within six predator-na€ ıve populations (Dingemanse et al 2007(Dingemanse et al , 2010; similar patterns characterise North American three-spined stickleback (Bell 2005). Predators thus shape behavioural correlations (Bell & Sih 2007;Adriaenssens & Johnsson 2013;Abbey-Lee & Dingemanse 2019).…”

Section: Introductionmentioning

confidence: 87%

“…, ); similar patterns characterise North American three‐spined stickleback (Bell ). Predators thus shape behavioural correlations (Bell & Sih ; Adriaenssens & Johnsson ; Abbey‐Lee & Dingemanse ).…”

Section: Introductionmentioning

confidence: 99%

“…). For example, in a study with birds investigating how perceived risk affected timing of egg laying, individual plasticity underpinned changes in behavioural correlations, because explorative birds bred late under low‐risk (positive correlation) but shifted to breed early under high‐risk (negative correlation) (Abbey‐Lee & Dingemanse ).…”

Section: Introductionmentioning

confidence: 99%

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Non‐consumptive effects of predation: does perceived risk strengthen the genetic integration of behaviour and morphology in stickleback?

2019

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Predators can shape genetic correlations in prey by altering prey perception of risk. We manipulated perceived risk to test whether such non‐consumptive effects tightened behavioural trait correlations in wild‐caught stickleback from high‐ compared to low‐risk environments due to genetic variation in plasticity. We expected tighter genetic correlations within perceived risk treatments than across them, and tighter genetic correlations in high‐risk than in low‐risk treatments. We identified genetic variation in plasticity, with genetic correlations between boldness, sociality, and antipredator morphology, as expected, being tighter within treatments than across them, for both of two populations. By contrast, genetic correlations did not tighten with exposure to risk. Tighter phenotypic correlations in wild stickleback may thus arise because predators induce correlational selection on environmental components of these traits, or because predators tighten residual correlations by causing environmental heterogeneity that is controlled in the laboratory. Our study places phenotypic integration firmly into an ecological context.

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“…Neither reproductive traits (e.g. clutch size, fledgling number) nor exploratory behaviour were affected by perceived predation levels (manipulated in 2013 and 2014; see Table S1 in Abbey‐Lee & Dingemanse, ). Exploratory behaviour also did not vary with observer identity (Moiron et al, ).…”

Section: Methodsmentioning

confidence: 99%

Individual variation in age‐dependent reproduction: Fast explorers live fast but senesce young?

Dingemanse

Moiron

Araya‐Ajoy

et al. 2019

Journal of Animal Ecology

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Adaptive integration of life history and behaviour is expected to result in variation in the pace‐of‐life. Previous work focused on whether ‘risky’ phenotypes live fast but die young, but reported conflicting support. We posit that individuals exhibiting risky phenotypes may alternatively invest heavily in early‐life reproduction but consequently suffer greater reproductive senescence. We used a 7‐year longitudinal dataset with >1,200 breeding records of >800 female great tits assayed annually for exploratory behaviour to test whether within‐individual age dependency of reproduction varied with exploratory behaviour. We controlled for biasing effects of selective (dis)appearance and within‐individual behavioural plasticity. Slower and faster explorers produced moderate‐sized clutches when young; faster explorers subsequently showed an increase in clutch size that diminished with age (with moderate support for declines when old), whereas slower explorers produced moderate‐sized clutches throughout their lives. There was some evidence that the same pattern characterized annual fledgling success, if so, unpredictable environmental effects diluted personality‐related differences in this downstream reproductive trait. Support for age‐related selective appearance was apparent, but only when failing to appreciate within‐individual plasticity in reproduction and behaviour. Our study identifies within‐individual age‐dependent reproduction, and reproductive senescence, as key components of life‐history strategies that vary between individuals differing in risky behaviour. Future research should thus incorporate age‐dependent reproduction in pace‐of‐life studies.

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Adaptive individual variation in phenological responses to perceived predation levels

Cited by 32 publications

References 49 publications

Repeatable differences in exploratory behaviour predict tick infestation probability in wild great tits

Repeatable differences in exploratory behaviour predict tick infestation probability in wild great tits

Non‐consumptive effects of predation: does perceived risk strengthen the genetic integration of behaviour and morphology in stickleback?

Individual variation in age‐dependent reproduction: Fast explorers live fast but senesce young?

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