EXCHANGE OF WATER BETWEEN A MITE LAELAPS ECHIDNINA AND SURROUNDING AIR UNDER EQUILIBRIUM CONDITIONS

被引：49

作者：

WHARTON, GW

DEVINE, TL

机构：

[1] Acarology Laboratory, College of Biological Sciences, The Ohio State University Columbus, OH

来源：

JOURNAL OF INSECT PHYSIOLOGY | 1968年 / 14卷 / 09期

关键词：

D O I：

10.1016/0022-1910(68)90023-1

中图分类号：

Q96 [昆虫学];

学科分类号：

摘要：

The spiny rat mite has been found to have a mean half-life of water exchange with vapour in the surrounding air of 18·6 hr at 25°C when the activity of the water vapour of the air av = 0·925. Tritiated water was used in making this determination. It was found that the rate constant for transpiration (kT) could be determined by measuring changes in the tritium content (T*) of the mite with time and that the rate constant for sorption (kS) could be similarly calculated from determinations of the specific radioactivity (S). The minimum rate constant (kP) for the pump responsible for the concentration of water from unsaturated air by the spiny rat mite can be calculated from kT, aw of the haemolymph, and the critical equilibrium activity. These studies were done under equilibrium conditions so that no significant changes in mass occurred. The mean values of the rate constants were: kT=kS0·0373 hr-1 and kP=0·0036 hr-1. © 1968.

引用

页码：1303 / +

页数：1

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