The genetics of phenotypic plasticity. XVI. Interactions among traits and the flow of information
The genetics of phenotypic plasticity. XVI. Interactions among traits and the flow of information
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表型可塑性的遗传学。
DOI：
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发表时间：
2018
期刊：
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通讯作者：
S. Scheiner
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作者：
S. Scheiner
虽然环境不同，适应性性状可塑性是不常见的，这可能是由于成本或限制。目前几乎没有证据表明可塑性的成本;限制是一个更有希望的解释，包括信息可靠性。信息可靠性降低的一个可能原因是环境信息通过一个性状的通道，然后影响第二个性状的表型，即信息路径。我使用基于个体的模拟模型，探索了性状相互作用的配置和环境变化在空间和时间上影响表型可塑性进化的方式。我发现基因型和表型的进化缩短和简化了从环境到适应性的信息路径。缩短的路径的特点是减少了可塑性的数量性状，有一个不太直接的联系之间的环境发展和健身。一个简化的路径的特点是减少的可塑性的数量性状之间的环境和表型有多个路径。这些结果表明，第八个命题可以添加到表型可塑性的进化理论中：性状可塑性将进化到最小化环境和适应性之间的信息路径。
Although the environment varies, adaptive trait plasticity is uncommon, which can be due to either costs or limitations. Currently there is little evidence for costs of plasticity; limitations are a more promising explanation, including information reliability. A possible cause for a decrease in information reliability is the channeling of environmental information through one trait that then affects the phenotype of a second trait, the information path. Using an individual‐based simulation model, I explored the ways in which configurations of trait interactions and patterns of environmental variation in space and time affect the evolution of phenotypic plasticity. I found that genotypes and phenotypes evolved to shorten and simplify the information path from the environment to fitness. A shortened path was characterized by a decrease in the amount of plasticity for traits that had a less direct connection between the environment of development and fitness. A simplified path was characterized by a decrease in the amount of plasticity for traits that had multiple paths between the environment and their phenotype. These results suggest that an eighth proposition be added to the theory of the evolution of phenotypic plasticity: Trait plasticity will evolve to minimize the information path between the environment and fitness.