The role of growth history in determining age and size at maturation in exploited fish populations
The role of growth history in determining age and size at maturation in exploited fish populations
复制标题
生长史在确定被开发鱼类种群成熟年龄和大小方面的作用
DOI：
10.1111/j.1467-2979.2008.00284.x
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发表时间：
2008
影响因子：
6.7
通讯作者：
J. Merilä
中科院分区：
文献类型：
--
作者：
A. Kuparinen;R. O’Hara;J. Merilä
最近，大量的注意力集中在研究被开发的鱼类种群成熟时年龄和大小的下降是否可能是对选择性捕捞的进化反应。为此，主要的重点一直是将生长变化的影响与成熟过程分开，但很少投入精力来评估增长实际上如何影响种群成熟时的年龄和大小。在这里，我们发展了成熟过程的概率描述，明确了成熟、成长和概率成熟反应范数之间的数学联系。除了提供一个数学上明确但启发式简单的框架来评估成熟时年龄和大小对生长的作用外，我们通过模拟证明，生长速度的变化可以导致成熟时年龄和大小的相当大的变化。更多地关注个体的生长历史将提供一个更好的位置，以了解构成成熟时年龄和大小表型变化的过程，并有助于将环境诱导的成熟塑料变化与渔业诱导选择的进化反应引起的变化区分开来。
Recently, a great deal of attention has been focused on investigating whether decreased ages and sizes at maturation in exploited fish populations could be evolutionary responses to selective fishing. To this end, the main focus has been on isolating the effects of growth changes from the process of maturation, but little effort has been invested in assessing how growth actually affects ages and sizes at maturation in a population. Here, we develop a probabilistic description of the process of maturation, which makes explicit the mathematical links between maturation, growth and the probabilistic maturation reaction norm. Apart from providing a mathematically explicit yet heuristically simple framework for assessing the role of growth in the age and size at maturation, we demonstrate by simulation that changes in growth rates can result in considerable shifts in the age and size at maturation. Focusing more attention on growth histories of individuals would provide a better position to understand the processes constituting phenotypic shifts in the age and size at maturation and help in disentangling environmentally induced plastic changes in maturation from those caused by evolutionary responses to fisheries-induced selection.