Population cycles in freshwater fish
Population cycles in freshwater fish
复制标题
淡水鱼的种群周期
DOI：
10.1111/j.1095-8649.1989.tb03053.x
复制
发表时间：
2006
影响因子：
2
通讯作者：
C. Townsend
中科院分区：
文献类型：
--
作者：
C. Townsend
鱼类种群的年强度经常遵循不稳定的模式。然而，据报告，在一些情况下，征聘工作出现了可预测的周期性波动。在一个单独的龄级负责全部或大部分卵的生产的鱼类中，可以建立一个周期，其周期等于达到成熟所需的时间。此外，密度依赖性可能通过繁殖力或通过与捕食者或竞争对手相互作用的卵或鱼的生存而起作用。本文回顾了年级强度循环变化的例子，并讨论了潜在原因的范围。
Year-class strength in fish populations frequently follows an erratic pattern. However, predictable cyclic fluctuations in recruitment have been reported in a number of instances. In fish in which a single age-class is responsible for all or most of the production of eggs, a cycle may be set up with a period equal to the time taken to reach maturity. Moreover, density-dependence may act through fecundity or via survival of eggs or fish subject to interactions with predators or competitors. This paper reviews examples of cyclic variation in year-class strength and discusses the range of underlying causes.