A General Model of Comparative Fecundity for Semelparous and Iteroparous Life Histories

@article{Young1981AGM,
  title={A General Model of Comparative Fecundity for Semelparous and Iteroparous Life Histories},
  author={Truman P. Young},
  journal={The American Naturalist},
  year={1981},
  volume={118},
  pages={27 - 36}
}
  • T. Young
  • Published 1 July 1981
  • Environmental Science
  • The American Naturalist
Previous models of semelparity and iteroparity are critically reviewed. A general model is produced which incorporates population growth rate, juvenile and adult survivorship, prereproductive development time (PDT), time between reproductive episodes (TBR), and senescence. Increasing values of population growth rate and juvenile survivorship favor semelparity. Increasing values of adult survivorship, age of senescence, and the ratio of PDT to TBR favor iteroparity. Ambiguities arise when… 
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References

SHOWING 1-8 OF 8 REFERENCES
The Adaptive Significance of Variations in Reproductive Habit in the Agavaceae II: Pollinator Foraging Behavior and Selection for Increased Reproductive Expenditure
TLDR
A coevolutionary hypothesis accounting for the evolution of Big Bang reproduction in yuccas and agaves is proposed, and evidence incidentally supports the notion that insect pollinators visit flowers in qualitative accord with the dictates of optimal diet theory.
Life-History Tactics: A Review of the Ideas
  • S. Stearns
  • Biology
    The Quarterly Review of Biology
  • 1976
TLDR
This review organizes ideas on the evolution of life histories into more comprehensive theory that makes more readily falsifiable predictions, and examination of different definitions of fitness.
Models of mast fruiting in trees.
  • D. Waller
  • Environmental Science
    Journal of theoretical biology
  • 1979
Life-History Consequences of Natural Selection: Cole's Result Revisited
TLDR
Some general results are proved to prove some general results on life-history strategies to give at least one answer to why there should be perennials.
The Adaptive Significance of Variations in Life History among Local Populations of Atlantic Salmon in North America
TLDR
The observed patterns of variation in life history are adaptive and take the agreement between theory and nature as a validation of the hypothesis that populations will in general differ from each other in the manner of their respective optima.
The Population Consequences of Life History Phenomena
  • L. C. Cole
  • Economics
    The Quarterly Review of Biology
  • 1954
The part of Cole’s article included here outlines the relationship of Thompson’s work (1931, paper 20 above) to stable population theory. Omitted sections discuss the relationships between the rate
Ecological correlates of life history in the alpine lobelias on Mount Kenya
  • 1981
The paradox of plant height in an Andean giant rosette plant
  • J . Ecol . Population dynamics of Espeletia in the Venezuelan Andes . Smithson . Contrib . Bot