Hostname: page-component-cd9895bd7-jkksz Total loading time: 0 Render date: 2024-12-26T03:38:15.198Z Has data issue: false hasContentIssue false
  • English
  • Français

COMPETITIVE DISPLACEMENT OF PANONYCHUS ULMI (ACARINA: TETRANYCHIDAE) BY ACULUS SCHLECHTENDALI (ACARINA: ERIOPHYIDAE) IN APPLE ORCHARDS1

Published online by Cambridge University Press:  31 May 2012

B. A. Croft  and
S. A. Hoying
B. A. Croft
Affiliation:
Pesticide Research Center and Department of Entomology, Michigan State University, East Lansing
S. A. Hoying
Affiliation:
Pesticide Research Center and Department of Entomology, Michigan State University, East Lansing
Get access Rights & Permissions [Opens in a new window]

Abstract

Evidence for competitive deplacement of Panonychus ulmi (ERM) from apple trees via Aculus schlechtendali (ARM) by what is thought to be a foliage conditioning mechanism is presented. Previous feeding of ARMs at high and moderate density levels near or below the economic threshold for this phytophagous mite on apple reduced the build-up of the ERM in 3 years of field experiments on Red Delicious trees and during a single season on McIntosh apple foliage. Comparative tests measuring oviposition rates of the ERM on excised apple leaves which had sustained high and low levels of previous rust mite feeding gave results similar to field experiments. The applied aspect of how this interspecific relationship can be managed in the context of an integrated mite management program for apples is discussed.

Type
Articles
Information
The Canadian Entomologist , Volume 109 , Issue 8 , August 1977 , pp. 1025 - 1034
Copyright
Copyright © Entomological Society of Canada 1977

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

Chant, D. A. 1959. Phytoseiid mites. Part I. Economics of seven species in southeastern England. Part II. A taxonomic review of the Phytoseiidae, with descriptions of 38 new species. Can. Ent. Suppl. 12. 166 pp.Google Scholar
Croft, B. A. 1975. Integrated control of apple mites. Ext. Bull. Mich. St. Univ. E-825. 12 pp.Google Scholar
Croft, B. A. and Brown, A. W. A.. 1975. Responses of arthropod natural enemies to insecticides. A. Rev. Ent. 20: 285–335.CrossRefGoogle ScholarPubMed
Croft, B. A. and McGroarty, D. L.. 1973. A model study of acaricide resistance, spider mite outbreaks and biological control patterns in Michigan apple orchards. Environ. Ent. 2: 633–638.CrossRefGoogle Scholar
Croft, B. A. and McGroarty, D. L.. 1977. The role of Amblyseius fallacis in Michigan apple orchards. Res. Rep. Mich. agric. Exp. Stn. 48 pp.Google Scholar
Croft, B. A., Welch, S. M., and Dover, M. J.. 1976. Dispersion statistics and sample size estimates for populations of the mite species Panonychus ulmi (Koch) and Amblyseius fallacis on apple. Environ. Ent. 5: 227–234.CrossRefGoogle Scholar
Downing, R. S. and Moilliet, T. K.. 1967. Relative densities of predaceous and phytophagous mites on three varieties of apple trees. Can. Ent. 99: 738–741.CrossRefGoogle Scholar
Helle, W. and Van de Vrie, M.. 1974. Problems with spider mites. Outlook on Agric. 8: 119–125.CrossRefGoogle Scholar
Herbert, H. J. and Sanford, K. H.. 1969. The influence of spray programs on the fauna of apple orchards in Nova Scotia XIX. Apple rust mite, Vasates schlechtendali, a food source for predators. Can. Ent. 101: 62–67.CrossRefGoogle Scholar
Hoyt, S. C. 1969. Integrated chemical control of insects and biological control of mites on apples in Washington. J. econ. Ent. 62: 74–86.CrossRefGoogle Scholar
Huffaker, C. B., Van de Vrie, M., and McMurtry, J. A.. 1970. Ecology of tetranychid mites and their natural enemies; tetranychid populations and their possible control by predators: an evaluation. Hilgardia 40: 391–458.CrossRefGoogle Scholar
Knisley, C. B. and Swift, F. C.. 1972. Qualitative study of mite fauna associated with apple foliage in New Jersey. J. econ. Ent. 65: 445–448.CrossRefGoogle Scholar
Rodriquez, J. G. 1968. The comparative NPK nutrition of Panonychus ulmi (Koch) and Tetranychus telarius (L.) on apple trees. J. econ. Ent. 51: 369–373.CrossRefGoogle Scholar
Van de Vrie, M., McMurtry, J. A., and Huffaker, C. B.. 1972. Ecology of tetranychid mites and their natural enemies. III. Biology, ecology and pest status and host-plant relations of tetranychids. Hilgardia 41: 343–432.CrossRefGoogle Scholar