Affiliation:
1. Department of Zoology, University of Cambridge
Abstract
1. A study has been made of the exchanges of water between the atmosphere and the tick Ornithodoros moubata.
2. Unfed nymphs are able to abstract water from moist air (95% R.H.) and to restrict their rate of water loss in dry air.
3. This ability is lost (a) in atmospheres containing 30-45% CO2; (b) in atmospheres containing more than 90% N2 (c) immediately after the tick is fed; (d) gradually after the tick has been starved for some five months.
4. It has been shown that the effect of high (30-45%) concentrations of CO2 is mainly upon the activity of the epidermal cells, possibly mediated through the central nervous system. The concentration required to cause opening of the spiracles is only about 5%.
Publisher
The Company of Biologists
Subject
Insect Science,Molecular Biology,Animal Science and Zoology,Aquatic Science,Physiology,Ecology, Evolution, Behavior and Systematics
Cited by
20 articles.
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