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首页> 外文期刊>Journal of genetics >Circadian clocks and life-history related traits: is pupation height affected by circadian organization in Drosophila melanogaster?
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Circadian clocks and life-history related traits: is pupation height affected by circadian organization in Drosophila melanogaster?

机译：昼夜节律和生活史相关特征：果蝇的高度受果蝇的昼夜节律组织影响吗？

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In D. melanogaster, the observation of greater pupation height under constant darkness than under constant light has been explained by the hypothesis that light has an inhibitory effect on larval wandering behaviour, preventing larvae from crawling higher up the walls of culture vials prior to pupation. If this is the only role of light in affecting pupation height, then various light : dark regimes would be predicted to yield pupation heights intermediate between those seen in constant light and constant darkness. We tested this hypothesis by measuring pupation height under various light : dark regimes in four laboratory populations of Drosophila melanogaster. Pupation height was the greatest in constant darkness, intermediate in constant light, and the least in a light / dark regime of LD 14:14 h. The results clearly suggest that there is more to light regime effects on pupation height than mere behavioural inhibition of wandering larvae, and that circadian organization may play some role in determining pupation height, although the details of this role are not yet clear. We briefly discuss these results in the context of the possible involvement of circadian clocks in life-history evolution.
机译：在D. melanogaster中，观察到在恒定的黑暗中比在恒定的光照下观察到更高的化ation高度的假设是，光对幼虫的游走行为具有抑制作用，防止幼虫在化up之前向上爬到培养瓶壁上。如果这是光在影响化up高度中唯一的作用，那么可以预测各种光：黑暗状态会产生化粪池高度，介于在恒定光照和恒定黑暗中所见的化脓高度。我们通过在四个果蝇果蝇实验室种群中的各种光照：黑暗条件下测量化ation高度来检验该假设。在LD 14:14 h的恒定黑暗中，化脓高度最大，在恒定光照下，化脓高度最小。结果清楚地表明，光环境对化ation高度的影响远不只是对游荡幼虫的行为抑制，而且昼夜节律组织可能在确定化height高度方面发挥一定作用，尽管该作用的细节尚不清楚。我们在生物钟可能参与生命历史进化的背景下简要讨论了这些结果。

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