PHYSIOLOGICAL AND BEHAVIORAL ADAPTATION TO VARYING ENVIRONMENTS - A MATHEMATICAL-MODEL
PHYSIOLOGICAL AND BEHAVIORAL ADAPTATION TO VARYING ENVIRONMENTS - A MATHEMATICAL-MODEL
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DOI：
10.1111/j.1558-5646.1988.tb02517.x
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发表时间：
1988-09-01
期刊：
影响因子：
3.3
通讯作者：
GOULD, F
中科院分区：
文献类型：
--
作者：
CASTILLOCHAVEZ, C;LEVIN, SA;GOULD, F
我们建立了一个数学模型来探讨异质环境下生境选择和生理适应的进化。该模型假定了以下条件：(1)一个无限大的泛生种群；(2)生殖期前个体可在斑块间移动；(3)一个基因座上的等位基因决定是否存在对有害斑块的适应；(4)第二基因座代码上的等位基因，这些等位基因决定了是否存在导致避免有害斑块的行为；(5)控制生理和行为的等位基因的加性效应；(6)频率无关适应度。该模型的结果表明，不存在非平凡的多态平衡。基因型适应度的模式和初始等位基因频率可以影响种群是通过生理机制还是行为机制适应，或者两者都适应。给定特定的基因型适应度值和初始等位基因频率，两个基因座之间的联系可以改变进化的结果。
We develop a mathematical model to explore the evolution of habitat selection and physiological adaptation in a heterogeneous environment. The model assumes the following conditions: (1) a panmictic population of infinite size; (2) prereproductive individuals mobile enough to move between patches; (3) alleles at one locus code for absence or presence of adaptation to detrimental patches; (4) alleles at a second locus code for absence or presence of behavior(s) that cause avoidance of the detrimental patches; (5) additive effects of alleles controlling physiology and behavior; (6) frequency-independent fitness. Results of the model indicate that nontrivial, polymorphic equilibria do not exist. The pattern of genotypic fitnesses and the initial allelic frequencies can influence whether the population adapts by physiological or behavioral mechanisms, or by both. Linkage between the two loci and alter the outcome of evolution, given specified genotype fitness values and initial allelic frequencies.