Water vapor absorption in arthropods by accumulation of myoinositol and glucose
Water vapor absorption in arthropods by accumulation of myoinositol and glucose
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DOI：
10.1126/science.285.5435.1909
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发表时间：
1999-09-17
期刊：
影响因子：
56.9
通讯作者：
Holmstrup, M
中科院分区：
文献类型：
--
作者：
Bayley, M;Holmstrup, M
亲水性土壤节肢动物一直被认为是通过迁移到更深的土壤层来应对土壤干燥。许多研究表明，它们在相对湿度低于90%的情况下存活干重，仅限于数小时。然而，很少有人注意到生理适应更现实的干燥制度，如在植物的永久枯萎点（98.9%的相对湿度）。描述了一种水蒸气吸收机制，其允许常见的土壤跳虫Folsomia candida在低于永久萎蔫点时保持活性。需要重新评估这个广泛而多样的动物群体的水生理学。
Hydrophilic soil arthropods have been thought to respond to soil desiccation exclusively by migrating to deeper soil Layers. Numerous studies have shown that their survival below 90 percent relative humidity dry weight, is Limited to hours. However, Little attention has been paid to physiological adaptations to more realistic desiccation regimes, such as at the permanent wilting point of plants (98.9 percent relative humidity). A water vapor absorption mechanism is described that allows a common soil collembolan, Folsomia candida, to remain active down to below the permanent wilting point. A reevaluation of the water physiology of this widespread and diverse animal group is required.