Impact of - IDL-BNC @ IDRC - International Development Research ...

glutathione reductase). The importance of protcases to hydrolyse ingested
proteins in the presence of protein-digestion reducers must also be studied
further.
The role of botanical substances in plant-insect interactions must be investigated
with emphasis on the basic mechanisms that underlie the insects'
response to and avoidance of xenobiotics. Such studies will contribute to our
understanding of the mechanisms involved in the development of insect
resistance to chemicals and will facilitate biotechnological developments and
improve pest-management strategies.
The search for new, naturally occurring insecticides and synergists represents
a challenge to pest-management specialists and toxicologists. The need to
control an increasing number of resistant species requires the identification of
compounds with novel modes of action. No significant improvement in vector
control can be envisaged without a drastic change in the nature of the biochemical
tools available. They must have long-term economic benefits and be
environmentally acceptable.
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of the sesquiterpene lactone tenulin from Helenium amarum against herbivorous
insects. Journal of Natural Products, 50, 690-695.
Arnason, J.T.; Philogene, B.J.R.; Morand, P.; Scaiano, J.C.; Werstiuk, N.; Lam, J.
1987a. Thiophene and acetylenes: phototoxic agents to herbivorous and bloodfeeding
insects. In Hcitz, JR.; Downum, K.R., ed., Light-activated pesticides.
American Chemical Society, Washington, DC, USA. Symposium, 339,255-264.
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resistance to insects. American Chemical Society, Washington, DC, USA.
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Bernard, C.B.; Arnason, J.T.; Philogène, B.J.R.; Lam, J.; Waddell, T. 1988. Effects of
lignans and other representative secondary metabolites of the Asteraceae on
the MFO activity of the European corn borer, Ostrinia nubilalis Hubner (Lepidoptera:
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Brindley, W.A.; Scum, A.A. 1984. Synergism and antagonism in the analysis of
insecticide resistance. Environmental Entomology, 13, 348-353.
Champagne, D.E.; Arnason, J.T.; Philogène, B.J.R.; Morand, P.; Lam, J. 1986. Lightmediated
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