ArticlePloS one2017
Density-dependence interacts with extrinsic mortality in shaping life histories.
Article in PloS one, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.
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Who cites it
8 citing papers in PubMed.
- Agelessness is possible under the disposable soma theory but system complexity makes it unlikely.Journal of theoretical biology · 2024Article
- Famine-related mortality in early life and accelerated life histories in nineteenth-century Belgium.Proceedings. Biological sciences · 2020Article
- From nest site lottery to host lottery: continuous model of growth suppression driven by the availability of nest sites for newborns or hosts for parasites and its impact on the selection of life history strategies.Theory in biosciences = Theorie in den Biowissenschaften · 2020Article
- Phenotypic plasticity of senescence inRoyal Society open science · 2020Article
- Evolutionary Ecology of Senescence and a Reassessment of Williams' 'Extrinsic Mortality' Hypothesis.Trends in ecology & evolution · 2019Review
- Does seed size mediate sex-specific reproduction costs in the Callosobruchus maculatus bean beetle?PloS one · 2019Article
- Population density shapes patterns of survival and reproduction inMarine biology · 2018Article
- Extrinsic Mortality Can Shape Life-History Traits, Including Senescence.Evolutionary biology · 2018Article
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Authors and funding
3 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
The role of extrinsic mortality in shaping life histories is poorly understood. However, substantial evidence suggests that extrinsic mortality interacts with density-dependence in crucial ways. We develop a model combining Evolutionarily Stable Strategies with a projection matrix that allows resource allocation to growth, tissue repairs, and reproduction. Our model examines three cases, with density-dependence acting on: (i) mortality, (ii) fecundity, and (iii) production rate. We demonstrate that density-independent extrinsic mortality influences the rate of aging, age at maturity, growth rate, and adult size provided that density-dependence acts on fertility or juvenile mortality. However, density-independent extrinsic mortality has no effect on these life history traits when density-dependence acts on survival. We show that extrinsic mortality interacts with density-dependence via a compensation mechanism: the higher the extrinsic mortality the lower the strength of density-dependence. However, this compensation fully offsets the effect of extrinsic mortality only if density-dependence acts on survival independently of age. Both the age-pattern and the type of density-dependence are crucial for shaping life history traits.
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Registered trials
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