Environmental endocrinology of salmon smoltification
Environmental endocrinology of salmon smoltification
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DOI：
10.1016/j.ygcen.2010.07.003
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发表时间：
2011-01-15
影响因子：
2.7
通讯作者：
McCormick, Stephen D.
中科院分区：
文献类型：
--
作者：
Bjornsson, Bjorn Thrandur;Stefansson, Sigurd O.;McCormick, Stephen D.
小鲑鱼是一种激素驱动的发育过程，适合溯河产卵鲑鱼的下游洄游和海洋生存和生长。小鲑鱼包括耐盐性增加、新陈代谢增加、下游迁徙和成群行为、鳍边缘变银和变黑以及嗅觉印记。这些变化是由生长激素、胰岛素样生长因子 I、皮质醇、甲状腺激素促进的，而催乳素则具有抑制作用。光周期和温度是小鲑鱼发育的关键环境因素，它们的相对重要性对于确定对未来气候变化的反应至关重要。我们对小鲑鱼的环境控制和内分泌调节的大部分了解都基于实验室和孵化场研究，但有关野生鱼类的新信息表明存在巨大差异。这种差异可能源于人工饲养环境中环境刺激的差异，并且可能对海洋生存和种群可持续性至关重要。内分泌干扰物、酸化和其他污染物会扰乱小鲑鱼的发育，导致小鲑鱼进入海水后存活率低。由爱思唯尔公司出版
Smolting is a hormone-driven developmental process that is adaptive for downstream migration and ocean survival and growth in anadromous salmonids. Smolting includes increased salinity tolerance, increased metabolism, downstream migratory and schooling behavior, silvering and darkened fin margins, and olfactory imprinting. These changes are promoted by growth hormone, insulin-like growth factor I, cortisol, thyroid hormones, whereas prolactin is inhibitory. Photoperiod and temperature are critical environmental cues for smolt development, and their relative importance will be critical in determining responses to future climate change. Most of our knowledge of the environmental control and endocrine mediation of smolting is based on laboratory and hatchery studies, yet there is emerging information on fish in the wild that indicates substantial differences. Such differences may arise from differences in environmental stimuli in artificial rearing environments, and may be critical to ocean survival and population sustainability. Endocrine disruptors, acidification and other contaminants can perturb smolt development, resulting in poor survival after seawater entry. Published by Elsevier Inc.