Codling Moth: Effects of Releasing Irradiated Mixed Sexes or Females or Males Only on Reproductive Potential of a Native Population
Authors: White, L. D.; Hutt, R. B.; Moffitt, H. R.; Winterfeld, R. G.; Lydin, L. V.; Clift, A. E.; Schoenleber, L. G.
Source: Journal of Economic Entomology, Volume 69, Number 2, April 1976 , pp. 155-160(6)
Publisher: Entomological Society of America
Abstract:Separate releases of sterile Laspeyresia pomonella (L.) were made throughout the growing season of 1973 in three 31-acre blocks (separated by 500 ft) of a large commercial orchard in the Wenas Valley, WA. Releases consisted of males and females irradiated with 25 krad, females only irradiated with 15 krad, and males only irradiated with 25 krad. A 35-acre control block that was treated with standard applications of insecticide was used as a control.
Infestations in each release area during the season and at harvesttime were compared with conservative estimates of infestations projected in the absence of control. These comparisons showed the area treated with insecticide with a theoretically calculated 99.7% suppression of the population vs. 91.5, 89.7, and 88.5% suppression due to releases of males and females, females only, and males only, respectively.
When the infestations in 1972 were compared with those in 1973, there was a net of 69 and 27% less damaged fruit in the areas treated with releases of females only and mixed sexes, respectively, and a 100% increase in damaged fruit in the area treated with releases of males only.
Document Type: Research Article
Publication date: April 1, 1976
- 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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