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Use of a Predator, Podisus maculiventris, to Distribute Virus and Initiate Epizootics

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Abstract:

Laboratory and field cage studies established that surface-contaminated Podisus Maculiventris (Say) can effectively transmit a Trichoplusia ni single-embedded nuclear polyhedrosis virus to plant surfaces for at least 1 week and thus initiate disease in the cabbage looper, T. ni (Hübner). Leaf discs sequentially exposed for 24-h intervals to virus-contaiminated P. maculiventris were bioassayed with cabbage looper larvae to determine presence of virus, and the resulting mortalities were: day 1, 100%; day 3,96%; day 5, 80%; day 8, 65%; day 11, 50%; and day 14, 19%. Virus-contaminated P. maculiventris were released in field cages containing populations of cabbage loopers; virus infections of the looper populations were initiated, and within 3 to 4 weeks, epizootics gave a high level of population suppression.

Document Type: Research Article

Publication date: February 1, 1982

More about this publication?
  • 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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