Hostname: page-component-848d4c4894-r5zm4 Total loading time: 0 Render date: 2024-07-01T18:26:31.530Z Has data issue: false hasContentIssue false
  • English
  • Français

FLUCTUATIONS IN NUMBERS OF ADULT BLACK FLIES (DIPTERA: SIMULIIDAE) IN DEEP RIVER, ONTARIO

Published online by Cambridge University Press:  31 May 2012

W. F. Baldwin  and
H. P. Gross
W. F. Baldwin
Affiliation:
Biology and Health Physics Division, Atomic Energy of Canada Limited, Chalk River, Ontario
H. P. Gross
Affiliation:
Biology and Health Physics Division, Atomic Energy of Canada Limited, Chalk River, Ontario
Get access Rights & Permissions [Opens in a new window]

Abstract

Adult black flies were trapped at the townsite of Deep River from the early emergence of Prosimulium spp. (approx. 21 May) through to the late summer decline of Simulium spp. (in August). "Sticky" traps employing CO2 as an attractant were located at five sites throughout the town; in addition a trap was positioned at a "control" site outside the town limits near a heavily forested area. The overall numbers increased rapidly in early June, remaining at high levels until the first week in July, by which time over 110,000 flies had been captured. The numbers of flies recovered both within and outside the town fluctuated widely with weather conditions, seemingly influenced by precipitation. In the town, three centrally located traps captured only half as many adults as two traps near the southerly limits, where a small stream flowed through light forest. The control trap showed that black flies were at least 10 times more plentiful outside Deep River. Three insecticide applications did not have any measurable effect on fly numbers. The predominant local species is Simulium venustum Say.

Type
Articles
Information
The Canadian Entomologist , Volume 104 , Issue 9 , September 1972 , pp. 1465 - 1470
Copyright
Copyright © Entomological Society of Canada 1972

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

Baldwin, W. F., Allen, J. R., and Slater, N. S.. 1966. A practical field method for the recovery of black flies labelled with phosphorus-32. Nature 212 (5065): 959–960.CrossRefGoogle Scholar
Davies, D. M. 1952. The population and activity of adult female black-flies in the vicinity of a stream in Algonquin Park, Ontario. Can. J. Zool. 30: 287–321.CrossRefGoogle Scholar
Davies, L. 1963. Seasonal and diurnal changes in the age-composition of adult Simulium venustum Say (Diptera) populations near Ottawa. Can. Ent. 95: 654–667.CrossRefGoogle Scholar
Gross, H. P., Baldwin, W. F., and West, A. S.. 1972. Introductory studies on the use of radiation in the control of black flies (Diptera: Simuliidae). Can. Ent. 104: 1217–1222.CrossRefGoogle Scholar
West, A. S., Baldwin, W. F., and Gomery, J.. 1971 (unpub.). A radioisotopic-sticky trap autoradiographic technique for studying the dispersal of black flies. Mimeographed document WHO/ONCHO/71. 84.Google Scholar
Wolfe, L. S. and Peterson, D. G.. 1960. Diurnal behaviour and biting habits of black flies (Diptera: Simuliidae) in the forests of Quebec. Can. J. Zool. 38: 489–497.CrossRefGoogle Scholar