Release of Backcross Insects on St. Croix to Suppress the Tobacco Budworm (Lepidoptera: Noctuidae): Behavior and Interaction with Native Insects

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Abstract:

During four releases of backcross insects to suppress native populations of Heliothis Virescens (F.) on St. Croix, U.S. Virgin Islands, the behavior of backcross insects and their interaction with native insects were studied. Backcross females were observed actively flying, feeding, and mating earlier than native females; however, no difference in time of oviposition or preference for oviposition sites was detected. Activity time of backcross and native males appeared to coincide. Mating interaction was at random between native and backcross insects when backcross insects were placed in the field as pupae and allowed to emerge. When adults were released, greater than expected intramating frequencies were observed, apparently as a result of inadequate dispersal of insects released as adults. Mating interaction between native and backcross insects was verified by an increase in sterility of native females with increased numbers of released insects. Backcross females with eupyrene sperm in their spermathecae were commonly collected.

Document Type: Research Article

Publication date: June 1, 1983

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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