Does eel metamorphosis cause a breakdown in the tenets of otolith applications? A case study using the speckled worm eel (Myrophis punctatus, Ophichthidae)
Does eel metamorphosis cause a breakdown in the tenets of otolith applications? A case study using the speckled worm eel (Myrophis punctatus, Ophichthidae)
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DOI：
10.1139/f06-052
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发表时间：
2006-07
影响因子：
2.4
通讯作者：
P. Powles;J. Hare;E. H. Laban;S. M. Warlen
中科院分区：
文献类型：
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作者：
P. Powles;J. Hare;E. H. Laban;S. M. Warlen
关于鳗鱼变态，耳石研究的几个基本原则最近受到质疑。特别是，一些研究人员认为，耳石增量形成不是每天，耳石材料可能会在变态过程中被吸收。我们进行了饲养实验，以检验的假设，增量形成是每天和耳石继续增长在鳗鱼变态。我们标记了野生捕捞的癍点叉尾鱼的耳石，并通过变态饲养这些鱼。变态的特征是标准长度、肛前长度和身体深度的减少，伴随着色素沉着的增加和行为的改变。在变态过程中，耳石的生长是每天或几乎每天进行的，并且在变态过程中耳石继续生长。因此，耳石应用的基本原则适用于鳗鱼变态，非日环生沉积和再吸收不应用作鳗鱼耳石特征的解释（例如，背...
Several basic tenets of otolith research have been questioned recently with regard to eel metamorphosis. Specifically, some researchers have suggested that otolith increment formation is not daily, and otolith material may be resorped during metamorphosis. We conducted a rearing experiment to test the hypothesis that increment formation is daily and that the otolith continues to grow during eel metamorphosis. We marked the otoliths of wild-caught Myrophis punctatus leptocephali and reared these fish through metamorphosis. Metamorphosis was characterized by a decreasing standard length, pre-anal length, and body depth accompanied by an increase in pigmentation and a change in behavior. Increment formation was daily or near-daily through metamorphosis, and the otolith continued to grow during metamorphosis. Thus, the basic tenets of otolith application apply to eel metamorphosis, and non-daily ring deposition and resorption should not be used as explanations for otolith characteristics of eels (e.g., back-c...