Developmental variation in salmonid populations
Developmental variation in salmonid populations
复制标题
鲑鱼种群的发育变异
DOI：
10.1111/j.1095-8649.1989.tb03073.x
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发表时间：
2006
影响因子：
2
通讯作者：
J. Thorpe
中科院分区：
文献类型：
--
作者：
J. Thorpe
鲑鱼的生活史模式在物种内部和物种之间以及种群内部和种群之间都存在差异。鲑鱼的一生中会发生两个主要的发育转变（sensu Smith-Gill）：小鲑鱼，其中淡水适应性转变为海洋适应性；和性成熟。每个过程都是一年一度的，具有内源性节律，但通过光周期同步。每个都涉及发育路线的选择，其方向取决于个体对先前进食机会的反应及其当前的代谢性能。数据来自实验室和农场对大西洋鲑鱼 Salmo salar L. 的实验，旨在测试这种发育模型。这些发现用于解释这些发育特征的变化及其对生活史模式的影响，这些变化在大西洋鲑鱼和其他鲑鱼的地理范围内很明显。
Salmonid life-history patterns vary within and between species, and within and between populations. Two major developmental conversions (sensu Smith-Gill) occur in the life of salmonids: smolting, in which freshwater adaptations are exchanged for marine ones; and sexual maturation. Each process is circannual, endogenously rhythmic but synchronized by photoperiod. Each involves a choice of developmental route, whose direction depends on the individual's responses to prior feeding opportunity, and its current metabolic performance. Data are presented from laboratory and farm experiments on Atlantic salmon, Salmo salar L., designed to test this developmental model. The findings are used to interpret variation in these developmental characteristics, and their consequences for life-history patterns, evident over the geographical range of Atlantic salmon and other salmonids.