Hostname: page-component-cd9895bd7-mkpzs Total loading time: 0 Render date: 2024-12-26T16:05:00.666Z Has data issue: false hasContentIssue false
  • English
  • Français

NOTES ON THE BIOLOGY OF THE APPLE RUST MITE, ACULUS SCHLECHTENDALI (PROSTIGMATA: ERIOPHYOIDAE), AND ITS DENSITY ON SEVERAL CULTIVARS OF APPLE IN NOVA SCOTIA1

Published online by Cambridge University Press:  31 May 2012

H. J. Herbert
H. J. Herbert
Affiliation:
Research Station, Canada Department of Agriculture, Kentville, Nova Scotia
Get access Rights & Permissions [Opens in a new window]

Abstract

The apple rust mite, Aculus schlechtendali (Nal.), is active on the apple leaves from late May until early August and passes through three generations as indicated by the peak numbers of eggs. This species overwinters as deutogynes under bud scales and crevices in the bark. During the latter part of May the deutogynes lay eggs that develop into first generation primaries, followed by a second generation the latter part of June. Eggs laid by the second generation primaries produce the overwintering deutogynes. Injury to the leaves, mainly bronzing to the ventral surfaces, becomes noticeable early in July. The numbers of A. schlechtendali varied between cultivars within orchards. The differences were not consistent between orchards.

Type
Articles
Information
The Canadian Entomologist , Volume 106 , Issue 10 , October 1974 , pp. 1035 - 1038
Copyright
Copyright © Entomological Society of Canada 1974

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

Downing, R. S. and Moilliet, T. K.. 1967. Relative densities of predacious and phytophagous mites on three varieties of apple trees. Can. Ent. 99: 738–741.Google Scholar
Henderson, C. F. and McBurnie, H. S.. 1943. Sampling technique for determining populations of the citrus red mite and its predators. U.S. Dep. Agric. Circ. 671.Google 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 apple in Washington. J. econ. Ent. 62: 74–86.CrossRefGoogle Scholar
Keifer, H. H. 1942. Eriophyid studies, XII. Bull. Calif. Dep. Agric. 31: 117–129.Google Scholar
Oatman, E. R. 1972. An ecological study of arthropod populations on apple in northeastern Wisconsin: Population dynamics of mite species on the foliage. Ann. ent. Soc. Am. 66: 122–131.CrossRefGoogle Scholar
Taylor, L. R. 1961. Aggregation, variance, and the mean. Nature, Lond. 189: 732–735.CrossRefGoogle Scholar