1. 具有群体防御的捕食-被捕食模型适应性进化分析.
- Author
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李诗琪 and 唐三一
- Subjects
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LIMIT cycles , *COMPETITION (Biology) , *PREDATION , *ECOLOGICAL models , *FUNCTIONAL groups , *PREDATORY animals - Abstract
Based on the theoretical framework of adaptive dynamics, the evolution of the predator-prey model with functional response of group defense effect on the predator handling time, was investigated. Firstly, in view of the interaction of predator populations with interspecific competition, the evolutionary conditions for a single predator population to split into 2 populations with different strategies through evolutionary branching were given. Secondly, when the ecological equilibrium of the model is unstable and the system has a limit cycle, the population will have strong coexistence under large mutation, but this coexistence will be evolutionarily unstable. Finally, the conclusions for the model with Holling-Ⅱ type functional response were compared. The results indicate that, with a sufficiently large prey carrying capacity, group defense effects can evolutionarily lead to the extinction of predators. [ABSTRACT FROM AUTHOR]
- Published
- 2023
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