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POLLEN REMOVAL IN CYPRIPEDIUM ACAULE (ORCHIDACEAE) IN RELATION TO AERIAL FENITROTHION SPRAYING IN NEW BRUNSWICK

Published online by Cambridge University Press:  31 May 2012

R. C. Plowright ,
James D. Thomson  and
G. R. Thaler
R. C. Plowright
Affiliation:
University of Toronto, Toronto, Ontario M5S 1A1
James D. Thomson
Affiliation:
University of Toronto, Toronto, Ontario M5S 1A1
G. R. Thaler
Affiliation:
University of Toronto, Toronto, Ontario M5S 1A1
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Abstract

Measures of pollen removal in the orchid Cypripedium acaule Ait. provided a retrospective method for estimating the activity of bumble bee pollinators in New Brunswick spruce-fir forests. Significantly lowered activity was observed in fenitrothion-sprayed forest as compared with unsprayed control areas. The difference is probably attributable to direct mortality of bees in sprayed forest.

Résumé

Des mesures du prélèvement de pollen sur l’orchidée Cypripedium acaule Ait. ont été utilisées pour évaluer rétrospectivement l’activité des bourdons pollinisateurs dans des boisés d’épinette et de sapin au Nouveau-Brunswick. L’activité s’est révélée significativement moindre dans une forêt arrosée au fénitrothion que dans des boisés témoins non-anosés. La différence est probablement due à la mortalité directe des bourdons dans la forêt arrosée.

Type
Articles
Information
The Canadian Entomologist , Volume 112 , Issue 8 , 01 August 1980 , pp. 765 - 769
Copyright
Copyright © Entomological Society of Canada 1980

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References

Case, F. W. 1964. Orchids of the western Great Lakes region. Cranbrook Inst. Sci., Bloomfield Hills, Mich.147 pp.Google Scholar
Correll, D. S. 1950. Native orchids of North America. Chronica Botanica, Waltham, Mass.400 pp.Google Scholar
Plowright, R. C. 1977. The effect of fenitrothion on forest pollinators in New Brunswick. pp. 335–341in Proceedings of the symposium on fenitrothion, the long-term effects of its use in forest ecosystems. Nat. Res. Council Can., Ottawa.Google Scholar
Plowright, R. C., Pendrel, B. A., and McLaren, I. A.. 1978. The impact of aerial fenitrothion spraying upon the population biology of bumble bees (Bombus Latr.: Hym.) in south-western New Brunswick. Can. Ent. 110: 1145–1156.CrossRefGoogle Scholar
Plowright, R. C. and Rodd, H. F.. 1980. The effect of aerial insecticide spraying on hymenopterous pollinators in New Brunswick. Can. Ent. 112: 259–269.CrossRefGoogle Scholar
Stoutamire, W. P. 1967. Flower biology of the lady's-slippers (Orchidaceae: Cypripedium). Mich. Bot. 6: 159–175.Google Scholar
Thaler, G. R. and Plowright, R. C.. The effect of aerial insecticide spraying for spruce budworm control on the fecundity of entomophilous plants in New Brunswick. Can. J. Bot. (in press).Google Scholar
Willson, M. F. and Price, P. W.. 1977. The evolution of inflorescence size in Asclepias (Asclepiadaceae). Evolution 31: 495–511.CrossRefGoogle ScholarPubMed
Willson, M. F. and Rathcke, B. J.. 1974. Adaptive design of the floral display in Asclepias syriaca L. Am. Midl. Nat. 92: 47–57.CrossRefGoogle Scholar