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Use of Optical Brighteners as Radiation Protectants for Gypsy Moth (Lepidoptera: Lymantriidae) Nuclear Polyhedrosis Virus

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Twenty-three optical brighteners were tested as radiation protectants for the gypsy moth nuclear polyhedrosis virus (NPV). Three brighteners were ineffective (i.e., <10% original activity remained after ultraviolet [UVI irradiation), and 17 provided good protection (i.e., >70% original activity remained). Eight of the latter 17 brighteners (In-trawite CF, Leucophor BS, Leucophor BSB, Phorwite AR, Phorwite BRU, Phorwite BKL, Phorwite eL, and Tinopal LPW) provided complete protection (i.e., 100% original activity remaining) at a 1% concentration. At lower concentrations, Phorwite AR and Tinopal LPW were superior UV protectants. Mortality rates were also affected by several brighteners (Intrawite CF, Phorwite AR, Leucophor BS, Leucophor BSB, Tinopal LPW), and NPV-exposed insects died more quickly than those exposed to standard NPV + H20.

Document Type: Research Article

Publication date: October 1, 1992

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  • Journal of Economic Entomology is published bimonthly in February, April, June, August, October, and December. The journal publishes articles on the economic significance of insects and is divided into the following sections: apiculture & social insects; arthropods in relation to plant disease; forum; insecticide resistance and resistance management; ecotoxicology; biological and microbial control; ecology and behavior; sampling and biostatistics; household and structural insects; medical entomology; molecular entomology; veterinary entomology; forest entomology; horticultural entomology; field and forage crops, and small grains; stored-product; commodity treatment and quarantine entomology; and plant resistance. In addition to research papers, Journal of Economic Entomology publishes Letters to the Editor, interpretive articles in a Forum section, Short Communications, Rapid Communications, and Book Reviews.
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