Effects of size and temperature on developmental time
Effects of size and temperature on developmental time
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DOI：
10.1038/417070a
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发表时间：
2002-05-02
期刊：
影响因子：
64.8
通讯作者：
Brown, JH
中科院分区：
文献类型：
--
作者：
Gillooly, JF;Charnov, EL;Brown, JH
身体大小和温度是影响几乎所有生物速率和时间的两个最重要的变量(1-7)。体型和体温与个体发育的关系特别重要，因为在个体发育过程中体型和体温经常变化(8-12)。在这里，我们根据异速生长和生化动力学的基本原理推导出一个通用模型，该模型预测个体发育的时间作为体重和温度的函数。该模型适用于鸟类和水生外温动物(鱼类、两栖动物、水生昆虫和浮游动物)在不同卵子大小和孵化温度范围内的胚胎发育时间。该模型还描述了不同浮游动物样本中胚胎后发育的近75%的变异。剩余的变化部分是由化学计量比解释的，特别是全身的碳磷比。这个模型也描述了其他动物在其他生命阶段的发育。这些结果表明，生物时间的一般定义对所有生物体来说都是大致不变的和共同的。
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.