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首页> 外文期刊>Reviews in Fisheries Science & Aquaculture >Making the Otolith Magnesium Chemical Calendar-Clock Tick: Plausible Mechanism and Empirical Evidence
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Making the Otolith Magnesium Chemical Calendar-Clock Tick: Plausible Mechanism and Empirical Evidence

机译:制作欧斯特二镁化学日历 - 时钟滴答:合理的机制和经验证据

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摘要

The incorporation of a number of readily measured trace elements into otoliths is considered to be under some sort of physiological control, but rarely are explicit mechanisms proposed. Studies of the incorporation of the trace element magnesium reveal that in some taxa there exists strong seasonal patterning, taking on the characteristics of a ''chemical calendar-clock.'' However, Mg/Ca and the isotopic ratio Mg-26/24 are less ''clock-like'' in taxa that are not as metabolically active. Herein, it is hypothesized that Mg uptake and incorporation are related to metabolic activity. Further, a two-step process of Mg incorporation is proposed: (1) limited entry into the otolith-bearing chamber through ion channels and (2) association with water-soluble proteins within the chamber. Supporting data from a range of taxa and life histories are provided; the authors' aim is to stimulate discussion and encourage physiologists to test these and alternative mechanistic hypotheses.
机译:将许多容易测量的痕量元素掺入偏岩中被认为是在某种生理控制下,但很少提出了明确的机制。 对痕量元素镁的掺入表明,在一些分类群中,存在强烈的季节性图案化,承担“化学日历时钟”的特点。然而,Mg / Ca和同位素比Mg-26/24是 在分类队中的少于“时钟”的“时钟”,不像代谢活跃。 在此,假设Mg吸收和掺入与代谢活性有关。 此外,提出了一种两步的Mg掺入方法:(1)通过离子通道和与腔室内的水溶性蛋白质相关的偏离壳体壳体的有限进入。 提供来自一系列分类群和生命历史的支持数据; 作者的目标是刺激讨论并鼓励生理学家来测试这些和替代机制假设。

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