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Temperature and Moisture Gradient Equipment

Published online by Cambridge University Press:  31 May 2012

W. M. Graham,
A. K. Onyearu and
F. L. Waterhouse
W. M. Graham
Affiliation:
University of St. Andrews, Department of Natural History, Queen's College, Dundee
A. K. Onyearu
Affiliation:
University of St. Andrews, Department of Natural History, Queen's College, Dundee
F. L. Waterhouse
Affiliation:
University of St. Andrews, Department of Natural History, Queen's College, Dundee
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Abstract

The construction of a temperature gradient area based upon a heat exchange grid is described. The main feature of the gradient apparatus is that it provides a flexible, yet temporally stable and evenly sloped gradient, which can be maintained in replicated troughs for many months with minimum attention. The control of the R.H. gradient in troughs containing a food medium is also discussed. Data relating to the life histories of Tribolium examined in the gradient is offered to exemplify the type of results obtainable.

Information

Type
Articles
Information
The Canadian Entomologist , Volume 97 , Issue 8 , August 1965, pp. 880 - 886
Copyright
Copyright © Entomological Society of Canada 1965

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