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INFLUENCE OF SOIL MOISTURE ON APPLE MAGGOT EMERGENCE, RHAGOLETIS POMONELLA (DIPTERA: TEPHRITIDAE)

Published online by Cambridge University Press:  31 May 2012

R. Trottier  and
J. L. Townshend
R. Trottier
Affiliation:
Research Station, Agriculture Canada, Vineland Station, Ontario L0R 2E0
J. L. Townshend
Affiliation:
Research Station, Agriculture Canada, Vineland Station, Ontario L0R 2E0
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Extract

Several authors have observed that Rhagoletis pomonella (Walsh) is usually less prevalent during hot dry summers than during cool wet summers (Rivard 1968). Neilson (1964) showed that the emergence of R. pomonella, under laboratory conditions, was affected by the relative humidity of the air. When the relative humidity was 20 or 40%, high mortality occurred during metamorphosis and fewer adults emerged.

The object of this study was to measure the influence of soil moisture on success and time of emergence in a laboratory experiment. The information is needed to improve the forecasting system for apple maggot control in apple orchards (Trottier, in press).

Type
Articles
Information
The Canadian Entomologist , Volume 111 , Issue 8 , August 1979 , pp. 975 - 976
Copyright
Copyright © Entomological Society of Canada 1979

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References

Kramer, P. J. 1969. Plant and Soil Water Relationships. McGraw-Hill, New York.Google Scholar
Neilson, W. T. A. 1964. Some effects of relative humidity on development of pupae of the apple maggot, Rhagoletis pomonella (Walsh). Can. Ent. 96: 810–811.CrossRefGoogle Scholar
Rivard, I. 1968. Synopsis et bibliographie annotée sur la mouche de la pomme, Rhagoletis pomonella (Walsh). Mém. Soc. ent. Qué. 2. 158 pp.Google Scholar
Snodgrass, R.E. 1924. Anatomy and metamorphosis of the apple maggot, Rhagoletis pomonella (Walsh). J. agric. Res.x 28: 1–36.Google Scholar
Trottier, R. Early warning system for apple pest management in Canada. Proc. Organization européenne et méditerranéenne pour la protection des plantes. In press.Google Scholar