适合度的相对性与路径依赖的自然选择

王瑞武, 李敏岚, 韩嘉旭, 王超

Fitness relativity and path-dependent selection

Ruiwu Wang, Minlan Li, Jiaxu Han, Chao Wang

图2 适合度演化的非平衡态理论。这时适合度景观是动态的。在A点时, 右侧性状适合度比较大, 物种向适合度较大的B性状演化。但演化到B点时, 适合度景观发生变化, 适合度并没有如预期增长。

Fig. 2 Fitness landscape in the nonequilibrium theory, in which the fitness of each phenotype might vary greatly. For example, when trait A evolves to trait B who has higher fitness, the individual’s fitness with trait A will not increase as expected. This is because the fitness of each trait might vary with the change of population structure and environment.