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SUPPRESSION OF BLACK FLY POPULATIONS IN DEEP RIVER, ONTARIO

Published online by Cambridge University Press:  31 May 2012

W. F. Baldwin ,
H. P. Gross ,
M. L. Wilson ,
D. J. Keill ,
R. J. Stuart ,
R. J. Sebastien ,
A. G. Knight ,
G. D. Chant ,
P. A. Knight  and
A. S. West
W. F. Baldwin
Affiliation:
Biology and Health Physics Division, Chalk River Nuclear Laboratories, Chalk River, Ontario
H. P. Gross
Affiliation:
Biology and Health Physics Division, Chalk River Nuclear Laboratories, Chalk River, Ontario
M. L. Wilson
Affiliation:
Biology and Health Physics Division, Chalk River Nuclear Laboratories, Chalk River, Ontario
D. J. Keill
Affiliation:
Biology and Health Physics Division, Chalk River Nuclear Laboratories, Chalk River, Ontario
R. J. Stuart
Affiliation:
Biology and Health Physics Division, Chalk River Nuclear Laboratories, Chalk River, Ontario
R. J. Sebastien
Affiliation:
Biology and Health Physics Division, Chalk River Nuclear Laboratories, Chalk River, Ontario
A. G. Knight
Affiliation:
Biology and Health Physics Division, Chalk River Nuclear Laboratories, Chalk River, Ontario
G. D. Chant
Affiliation:
Biology and Health Physics Division, Chalk River Nuclear Laboratories, Chalk River, Ontario
P. A. Knight
Affiliation:
Biology and Health Physics Division, Chalk River Nuclear Laboratories, Chalk River, Ontario
A. S. West
Affiliation:
Biology and Health Physics Division, Chalk River Nuclear Laboratories, Chalk River, Ontario
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Abstract

Data from black fly traps in Deep River over the past 5 years indicate that larvicides applied to breeding sites in streams surrounding the town have substantially reduced the numbers of this pest. Very high numbers occurred in 1972, the result of invasion associated with high westerly and northerly winds at a critical period of time or with heavy protective snow cover during the preceding winter. The lowest population levels occurred in 1975, when treatment included a stream near the town which had not been treated previously. The results indicate that with proper stream management it is possible to substantially reduce the nuisance value of black flies in a small northern town.

Type
Articles
Information
The Canadian Entomologist , Volume 109 , Issue 2 , February 1977 , pp. 249 - 254
Copyright
Copyright © Entomological Society of Canada 1977

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References

Baldwin, W. F., West, A. S., and Gomery, J.. 1975. Dispersal pattern of black flies (Diptera: Simuliidae) tagged with 32P. Can. Ent. 107: 113–118.CrossRefGoogle Scholar
Baldwin, W. F. and Gross, H.. 1972. Fluctuations in numbers of adult black flies (Diptera: Simuliidae) in Deep River, Ontario. Can. Ent. 104: 1466–1470.CrossRefGoogle Scholar
Wellington, W. G. 1974. Black fly activity during cumulus-induced pressure fluctuations. Environ. Ent. 3(2): 351–353.CrossRefGoogle Scholar