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Relative Toxicity of Parathion and Kelthane to the Predacious Mite Phytoseiulus persimilis Athias-Henriot and its Prey, Tetranychus urticae Koch, (Acarina: Phytoseiidae, Tetranychidae) in the Laboratory1

Published online by Cambridge University Press:  31 May 2012

D. C. Herne  and
D. A. Chant
D. C. Herne
Affiliation:
Research Laboratory, Research Branch, Canada Department of Agriculture, Vineland Station, Ontario
D. A. Chant
Affiliation:
Research Laboratory, Research Branch, Canada Department of Agriculture, Vineland Station, Ontario
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Abstract

The relative toxicity of Kelthane (1,1-bis (p-chlorophenyl) -2,2,2-trichloroethanol), and parathion to Phytoseiulus persimilis Athias-Henriot and its prey, Tetranychus urticae K. (= telarius (L.)), was determined using a Potter Spray Tower. Parathion was found to be far more toxic to P. persimilis than was Kelthane. The LD50 values for Kelthane were 0.051% and 0.29% for T. urticae and P. persimilis respectively, and for parathion were 0.050% and 0.0044% respectively. The LD95 values bore a similar relationship to each other. The two materials were equally toxic to T. urticae. Therefore, use of Kelthane rather than parathion in an environment where P. persimilis and T. urticae were interacting would favour the beneficial species. The statistical aspects of the test method are discussed.

Type
Articles
Information
The Canadian Entomologist , Volume 97 , Issue 2 , February 1965 , pp. 172 - 176
Copyright
Copyright © Entomological Society of Canada 1965

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References

Bliss, C. I. 1952. The statistics of bioassay. Academic Press, New York.Google Scholar
Bravenboer, L., and Dosse, G.. 1962. Phytoseiulus riegeli Dosse als Pradator einiger Schadmilben aus der Tetranychus urticae Gruppe. Ent. exp. et applic. 5: 291–304.CrossRefGoogle Scholar
Chant, D. A. 1961a. An experiment in biological control of Tetranychus telarius (L.) (Acarina: Tetranychidae) in a greenhouse using the predacious mite Phytoseiulus persimilis Athias-Henriot (Phytoseiidae). Canad. Ent. 93: 437–443.CrossRefGoogle Scholar
Chant, D. A. 1961b. The effect of prey density on prey consumption and oviposition in adults of Typhlodromus (T.) occidentalis Nesbitt (Acarina: Phytoseiidae) in the laboratory. Canad. J. Zool. 39: 311–315.CrossRefGoogle Scholar
Dittrich, V. 1962. A comparative study of toxicological test methods on a population of the two-spotted spider mite Tetranychus telarius. J. econ. Ent. 55: 644–648.CrossRefGoogle Scholar
Finney, D. J. 1952. Probit Analysis. Cambridge University Press.Google Scholar
Harris, C. R., Manson, G. F. and Mazurek, J. H.. 1962. Development of insecticidal resistance by soil insects in Canada. J. econ. Ent. 55: 777–780.CrossRefGoogle Scholar
Putman, W. L., and Herne, D. C.. 1959. Gross effects of some pesticides on populations of phytophagous mites in Ontario peach orchards and their economic implications. Canad. Ent. 91: 568–579.CrossRefGoogle Scholar
Smith, F., Henneberry, T. and Boswell, A.. 1963. The pesticide tolerance of Typhlodromus fallacis (Garman) and Phytoseiulus persimilis A. H. with some observations on the predator efficiency of P. persimilis. J. econ. Ent. 56: 274–278.CrossRefGoogle Scholar
Stern, V. et al. , 1959. The integrated control concept. Hilgardia 29: 89–101.CrossRefGoogle Scholar
Voss, G. Von. 1961. Ein neues Akarizrd-Austestungsverfahren fur Spinnmilben. Anz. Schädlingsk. 34: 76–77.CrossRefGoogle Scholar