The physiology/life-history nexus

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2002
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Ricklefs, Robert E.
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Trends in Ecology & Evolution. 2002, 17(10), pp. 462-468. ISSN 0169-5347. Available under: doi: 10.1016/S0169-5347(02)02578-8
Zusammenfassung

The rate of reproduction, age at maturity and longevity vary widely among species. Most of this life-history variation falls on a slow-fast continuum, with low reproductive rate, slow development and long life span at one end and the opposite traits at the other end. The absence of alternative combinations of these variables implies constraint on the diversification of life histories, but the nature of this constraint remains elusive. Here, we argue that individual and adaptive responses to different environments are limited by physiological mechanisms. Although energy and materials allocations are important results of physiological tradeoffs, endocrine control mechanisms can produce incompatible physiological states that restrict life histories to a single dominant axis of variation. To approach the problem of life-history variation properly, studies should integrate behavior and physiology within the environmental and demographic contexts of selection.Incompatibilities between alternative physiological states, established by allocation of energy and tissues as well as the limited flexibility of endocrine control mechanisms, constrain individual and interspecific variation in life histories.

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570 Biowissenschaften, Biologie
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ISO 690RICKLEFS, Robert E., Martin WIKELSKI, 2002. The physiology/life-history nexus. In: Trends in Ecology & Evolution. 2002, 17(10), pp. 462-468. ISSN 0169-5347. Available under: doi: 10.1016/S0169-5347(02)02578-8
BibTex
@article{Ricklefs2002physi-16729,
  year={2002},
  doi={10.1016/S0169-5347(02)02578-8},
  title={The physiology/life-history nexus},
  number={10},
  volume={17},
  issn={0169-5347},
  journal={Trends in Ecology & Evolution},
  pages={462--468},
  author={Ricklefs, Robert E. and Wikelski, Martin}
}
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