Hostname: page-component-586b7cd67f-vdxz6 Total loading time: 0 Render date: 2024-11-20T09:31:29.306Z Has data issue: false hasContentIssue false

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
Affiliation:
Research Station, Canada Department of Agriculture, Vineland Station, Ontario

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
Copyright
Copyright © Entomological Society of Canada 1970

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Abbott, W. S. 1925. A method of computing the effectiveness of an insecticide. J. econ. Ent. 18: 265267.CrossRefGoogle Scholar
Boudreaux, H. B. 1958. The effect of relative humidity on egg-laying, hatching, and survival in various spider mites. J. Insect Physiol. 2: 6572.CrossRefGoogle Scholar
Flitters, N. E. 1968. Microelectrothermometry for psychrometric determinations of insect leaf microhabitats. Ann. ent. Soc. Am. 61: 923926.CrossRefGoogle Scholar
Fraenkel, G., and Herford, G. V. B.. 1938. The respiration of insects through the skin. J. exp. Biol. 15: 266280.CrossRefGoogle Scholar
Herne, D. H. C. 1968. Some responses of the European red mite, Panonychus ulmi, to immersion in water. Can. Ent. 100: 540541.CrossRefGoogle Scholar
Hueck, H. J., Kuenen, D. J., Den Boer, P. J., and Jaeger, E.. 1952. The increase of egg production of the fruit tree red spider mite (Metatetranychus ulmi) under influence of DDT. Physiol. comp. 2: 371377.Google Scholar
Linke, W. 1953. Investigation of the biology and epidemiology of the common spider mite, Tetranychus althaeae V. Hanst., with particular consideration to hops as the host. Höfchen-Briefe 6: 181232.Google Scholar
McEnroe, W. D. 1961. The control of water loss by the two-spotted spider mite. Ann. ent. Soc. Am. 54: 883887.CrossRefGoogle Scholar
Mori, H. 1957. The influence of temperature and relative humidity upon the development of the eggs of fruit tree red spider mite Metatetranychus ulmi (Koch). J. Fac. Agr. Hokkaido Univ. 50: 363370.Google Scholar
Mori, H., and Chant, D. A.. 1966. The influence of humidity on the activity of Phytoseiulus persimilis Athias-Henriot and its prey, Tetranychus urticae (C. L. Koch) (Acarina: Phytoseiidae, Tetranychidae). Can. J. Zool. 44: 863871.CrossRefGoogle Scholar
Putman, W. L. 1968. Some effects of anoxia and hypoxia on the European red mite, Panonychus ulmi (Acarina: Tetranychidae). Can. Ent. 100: 617623.CrossRefGoogle Scholar
Ramsey, J. A., Butler, C. G., and Sang, J. H.. 1938. The humidity gradient at the surface of a transpiring leaf. J. exp. Biol. 25: 255265.CrossRefGoogle Scholar
Solomon, M. E. 1957. Estimation of humidity with cobalt thiocyanate papers and permanent colour standards. Bull. ent. Res. 48: 389506.CrossRefGoogle Scholar
Winston, P. W., and Bates, D. H.. 1960. Saturated solutions for the control of humidity in biological research. Ecology 41: 232237.CrossRefGoogle Scholar