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Individual variatio...
Individual variation in age-dependent reproduction: Fast explorers live fast but senesce young?
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- Dingemanse, Niels J. (författare)
- Ludwig Maximilians Univ Munchen, Germany
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- Moiron, Maria (författare)
- Max Planck Inst Ornithol, Germany; UMR 5175 Campus CNRS, France
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- Araya-Ajoy, Yimen G. (författare)
- Max Planck Inst Ornithol, Germany; Norwegian Univ Sci and Technol, Norway
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- Mouchet, Alexia (författare)
- Ludwig Maximilians Univ Munchen, Germany; Max Planck Inst Ornithol, Germany
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- Abbey-Lee, Robin (författare)
- Linköpings universitet,Biologi,Tekniska fakulteten,Max Planck Inst Ornithol, Germany
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(creator_code:org_t)
- 2019-11-13
- 2020
- Engelska.
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Ingår i: Journal of Animal Ecology. - : WILEY. - 0021-8790 .- 1365-2656. ; 89:2, s. 601-613
- Relaterad länk:
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https://liu.diva-por... (primary) (Raw object)
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https://besjournals....
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- 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 amp;gt;1,200 breeding records of amp;gt;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.
Ämnesord
- NATURVETENSKAP -- Biologi -- Evolutionsbiologi (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences -- Evolutionary Biology (hsv//eng)
Nyckelord
- age dependence; behaviour; life history; personality; reaction norms; reproduction; senescence; variance partitioning
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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