Personality-driven life history trade-offs differ in two subpopulations of free-ranging predators.

作者: Félicie Dhellemmes , Jean‐Sébastien Finger , Matthew J. Smukall , Samuel H. Gruber , Tristan L. Guttridge

DOI: 10.1111/1365-2656.13283

关键词:

摘要: Consistent individual differences in behaviour (i.e. personality) can be explained an evolutionary context if they are favoured by life history trade-offs as conceptualized the pace-of-life syndrome (POLS) hypothesis. Theory predicts that faster-growing individuals suffer higher mortality and this trade-off is mediated through exploration/risk-taking personality, but empirical support for remains limited ambiguous. Equivocal to POLS hypothesis suggests link between personality may only emerge under certain circumstances. Understanding personality-driven would facilitated long-term studies wild populations experiencing different ecological conditions. Here, we tested whether measured semi-captivity was associated with a growth-mortality via risk-taking two subpopulations of juvenile lemon sharks Negaprion brevirostris known differ their predator abundance. We expected stronger predator-rich environment compared predator-poor environment. Sharks were captured yearly from 1995 onwards allowing us obtain data on growth apparent survival each subpopulation. then used novel open-field assay test exploration 2012 2017. A subset monitored field using telemetry document behaviours. (a) fast explorers captivity took more risks grew faster (b) natural selection acted against explorative, sharks. In subpopulation fewer predators, explorative faster. turn, larger, fast-growing had lower survival. subpopulation, despite finding growth, found no trade-off. Our study demonstrates association some contexts not others. identify resource abundance main potential drivers personality-mediated emphasize future work benefit approach integrating across

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