Effects of size and temperature on developmental time

Article

关键词: EMBRYONIC-DEVELOPMENT TIME;    N-P STOICHIOMETRY;    INCUBATION-TEMPERATURE;    LIFE-HISTORY;    BODY-SIZE;    EGG SIZE;    ZOOPLANKTON;    GROWTH;    REPRODUCTION;    LONGEVITY;   

DOI  :  10.1038/417070a

来源: SCIE

【 摘 要 】

Body size and temperature are the two most important variables affecting nearly all biological rates and times(1-7). The relationship of size and temperature to development is of particular interest, because during ontogeny size changes and temperature often varies(8-12).Here we derive a general model, based on first principles of allometry and biochemical kinetics, that predicts the time of ontogenetic development as a function of body mass and temperature. The model fits embryonic development times spanning a wide range of egg sizes and incubation temperatures for birds and aquatic ectotherms (fish, amphibians, aquatic insects and zooplankton). The model also describes nearly 75% of the variation in post-embryonic development among a diverse sample of zooplankton. The remaining variation is partially explained by stoichiometry, specifically the whole-body carbon to phosphorus ratio. Development in other animals at other life stages is also described by this model. These results suggest a general definition of biological time that is approximately invariant and common to all organisms.

【 授权许可】

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