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EFFECTS OF WATER AND HIGH HUMIDITY ON THE EUROPEAN RED MITE, PANONYCHUS ULMI (ACARINA: TETRANYCHIDAE)1

Published online by Cambridge University Press:  31 May 2012

Wm. L. Putman
Wm. L. Putman
Affiliation:
Research Station, Canada Department of Agriculture, Vineland Station, Ontario
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Abstract

Water deposited on peach leaves as a constantly replenished film for 48 hr killed few European red mites, Panonychus ulmi (Koch), by drowning. Considerably more, especially of larvae, were lost by their coming loose from the water-covered leaf surface and floating off; the proportion thus lost did not differ greatly between 6- and 48-hr treatments. Relative humidity of 100% and to a lesser degree, 96–99%, inhibited activity and development.

Type
Articles
Information
The Canadian Entomologist , Volume 102 , Issue 8 , August 1970 , pp. 955 - 961
Copyright
Copyright © Entomological Society of Canada 1970

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