Eye colour in juvenile Atlantic salmon: effects of social status, aggression and foraging success
Eye colour in juvenile Atlantic salmon: effects of social status, aggression and foraging success
复制标题
幼年大西洋鲑鱼的眼睛颜色：社会地位、攻击性和觅食成功的影响
DOI：
10.1111/j.1095-8649.2002.tb00899.x
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发表时间：
2002
影响因子：
2
通讯作者：
F. Huntingford
中科院分区：
文献类型：
--
作者：
H. C. Suter;F. Huntingford
在半自然环境中饲养 20 天的大西洋鲑鱼幼年小群体中，基于状态的巩膜颜色差异在研究开始 3 天后变得明显，并持续了 20 天。优势鱼的巩膜颜色苍白，这种模式在实验期间非常稳定。相比之下，次级鱼类（等级2-5）的巩膜颜色每天都在波动。排名 4-5 的鱼的中位巩膜颜色在受到更多攻击的日子里变深，排名 2 的鱼的巩膜颜色在它们发起更多攻击的日子里变浅。排名2-4的鱼的巩膜颜色变化在进食期间比非进食期间更频繁。这项研究证实，在更自然的环境中也可以看到眼睛颜色和水箱中描述的状态之间的关系，并且幼鱼的颜色变化是对当地事件的复杂反应。
Status-based differences in sclera colour in small groups of juvenile Atlantic salmon Salmo salar, held in a semi-natural environment over a 20 day period, became obvious 3 days after the start of the study and persisted for the 20 days. Dominant fish had pale sclera, and this pattern was very stable over the experimental period. In contrast, the sclera colour of subordinate fish (ranks 2–5) fluctuated from day to day. Median sclera colour offish ranked 4–5 darkened on days they received more aggression, and sclera of rank 2 fish were lighter on days on which they initiated more attacks. Changes in sclera colour of fish ranked 2–4 were more frequent during feeding periods than non-feeding periods. This study confirms that the relationship between eye colour and status described in tanks is also seen in more natural environments, and also that colour change in juvenile salmonids is a complex response to local events.