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Differences in activity enhancement of a baculovirus by an optical brightener between Choristoneura fumiferana and Choristoneura occidentalis (Lepidoptera: Tortricidae)

Published online by Cambridge University Press:  31 May 2012

S.Y. Li  and
I.S. Otvos
S.Y. Li*
Affiliation:
Natural Resources Canada, Canadian Forest Service, Atlantic Forestry Centre, PO Box 960, Corner Brook, Newfoundland, Canada A2H 6J3
I.S. Otvos
Affiliation:
Natural Resources Canada, Canadian Forest Service, Pacific Forestry Centre, 506 West Bumside Road, Victoria, British Columbia, Canada V8Z 1M5
*
1 Author to whom all correspondence should be addressed (E-mail: [email protected]).
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Optical brighteners were recently discovered to function as UV protectants for baculoviruses of insects (Shapiro 1992) and, also, to enhance entomopathogenic activity of these viruses (Hamm and Shapiro 1992; Li and Otvos 1999a). Enhancement of viral activity by brighteners varied greatly from one virus–host system to another: for example, from 1500-fold in LdMNPV against Lymantria dispar (L.) (Lepidoptera: Lymantriidae) (Argauer and Shapiro 1997) to 2- to 13-fold in a multicapsid nuclear polyhedrosis virus of Choristoneura fumiferana (Clemens) (Lepidoptera: Tortricidae) (CfMNPV) against Choristoneura occidentalis Freeman (Li and Otvos 1999a). The reason for this variation in enhancement of viral activity is still unknown. In this study, we used CfMNPV to compare the levels of viral enhancement by an optical brightener between C. occidentalis and C. fumiferana.

Type
Articles
Information
The Canadian Entomologist , Volume 133 , Issue 3 , June 2001 , pp. 329 - 332
Copyright
Copyright © Entomological Society of Canada 2001

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