SITE OF ACTIVE UPTAKE OF ATMOSPHERIC WATER IN LARVAE OF TENEBRIO-MOLITOR
SITE OF ACTIVE UPTAKE OF ATMOSPHERIC WATER IN LARVAE OF TENEBRIO-MOLITOR
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DOI：
10.1016/0022-1910(75)90154-7
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发表时间：
1975-01-01
影响因子：
2.2
通讯作者：
WINSTON, PW
中科院分区：
文献类型：
--
作者：
DUNBAR, BS;WINSTON, PW
饥饿和干燥8天的幼虫将从93%的相对湿度中摄取水分，这种增加在7天后停止。在0%R.H.饥饿的情况下，摄取率和摄取量是相同的。与那些在53%相对湿度下饥饿的人一样。绑住最后一个腹段可以防止摄取，而捆绑第一个腹段可以获得对照组的三分之一的收益。这支持了这样一种理论，即大气水分的主动吸收是通过直肠而不是身体角质层。由于达到平衡所需的时间，在53%的相对湿度下暴露后的摄取量与0%R.H.后的摄取量相同，以及摄取量的大幅超标，表明该物种的现象是粪便干燥的副产品，而不是水分平衡生理的重要方面。
Larvae starved and desiccated for 8 days will then take up water from 93% r.h., the gain ceasing by 7 days. The rate and amount of uptake were the same in those starved at 0% r.h. as in those starved at 53% r.h. Tying off the last abdominal segment prevents uptake while tying off the first abdominal segment allowed one-third as much gain as controls. This supports the theory that active uptake of atmospheric water is by way of the rectum and not the body cuticle. Because of the time taken to reach equilibrium, of the same uptake after exposure at 53% as after 0% r.h., and of a large overshoot in uptake, it is suggested that the phenomenon in this species is a by-product of drying the faeces and not a vital aspect of the physiology of water balance.