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首页> 外文期刊>Journal of Fish Biology >Lunar and daily spawning rhythms of Senegal sole Solea senegalensis
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Lunar and daily spawning rhythms of Senegal sole Solea senegalensis

机译：塞内加尔唯一的Solea塞内加尔的月球和每日产卵节律

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摘要

A periodicity of 29 days was observed in spawning rhythms in Senegal sole Solea senegalensis, with an acrophase around the last quarter and the new moon. In both spring and autumn, a very marked nocturnal spawning rhythm was registered, with spawning beginning after dusk and the acrophase occurring around 2300 hours. When the photoperiod was artificially extended (from 10L:14D to 14L:10D), S. senegalensis synchronized to the new photoperiod: spawning took place after the new 'dusk', the beginning gradually shifting from 2100 to 2300 hours and the acrophase from 2325 to 0032 hours. Under continuous light conditions, fish sustained rhythmicity for 2 days, with an acrophase at 2249 hours, which suggested the existence of an endogenous pacemaker controlling the daily spawning rhythm. These findings provided new insights for better understanding the reproductive physiology of this species and for optimizing the timing protocols of egg collection and larvae production in S. senegalensis aquaculture.
机译：塞内加尔唯一的Solea senegalensis的产卵节律观察到周期为29天，在最后一个季度和新月前后出现顶峰期。在春季和秋季，都有一个非常明显的夜间产卵节律，产卵在黄昏后开始，顶生期大​​约在2300小时左右。当人为地延长光周期（从10L：14D到14L：10D）时，塞内加尔沙门氏菌与新的光周期同步：在新的“黄昏”之后产卵，开始逐渐从2100小时转移到2300小时，顶峰期从2325开始至0032小时。在持续的光照条件下，鱼可维持2天的节律性，在2249小时达到顶峰期，这表明存在控制每天产卵节律的内生起搏器。这些发现提供了新的见解，可以更好地了解该物种的繁殖生理，并优化塞内加尔水产养殖中卵收集和幼体生产的时间安排。

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