期刊
AMERICAN NATURALIST
卷 193, 期 3, 页码 E65-E77出版社
UNIV CHICAGO PRESS
DOI: 10.1086/701041
关键词
diel vertical migration; game theory; habitat selection; predator-prey interactions; deep scattering layer; optimal strategies
资金
- Centre for Ocean Life, a Villum Kann Rasmussen Centre of Excellence
- Villum Foundation
- Gordon and Betty Moore Foundation [5479]
Prey and predators continuously react to each other and to their environment, adjusting their behavior to maximize their fitness. In a pelagic environment, organisms can optimize their fitness by performing diel vertical migrations. We applied a game-theoretic approach to investigate the emergent patterns of optimal habitat selection strategies in a multiple-habitat arena. Our setup allows both players to choose their position at day and at night in the water column. The model reproduces features of vertical migrations observed in nature, including residency at depth or at the surface, vertical migrations, mixed strategies, and bimodal distributions within a population. The mixed strategies appear as a consequence of frequency-dependent processes and not of any intraspecies difference between individuals. The model also reveals a curious feature where natural selection on individuals can provoke distinct regime shifts and precipitate an irreversible collapse in fitness. In the case presented here, the increasing voracity of the predator triggers a behavioral shift in the prey, reducing the fitness of all members of the predator population.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据