Factors Influencing Pink Bollworm Pupation and Moth Emergence From Overwintering Larvae in Central Texas1
Author: FIFE, L. C.
Source: Journal of Economic Entomology, Volume 54, Number 5, October 1961 , pp. 908-913(6)
Publisher: Entomological Society of America
Abstract:Time and rate of moth emergence of the pink bollworm (Pectinophora gossypiella (Saunders)) from overwintering larvae in two environments over a 6-year period at Waco, Texas are reported. Two major peaks of emergence occurred in 5 of the 6 years from infested open cotton bolls on the soil surface and in 4 years from buried bolls. Usually major peaks occurred 16 to 25 days after an inch or more of rainfall on 1 or more days. Smaller peaks occurred within the same intervals after approximately 0.5 inch of precipitation. Usually major peaks were higher and extended over a longer time as the amount of precipitation on 1 to several days increased. As the temperature increased, the number of days between heavy rainfall and high peaks decreased. Burial of infested open bolls resulted in earlier moth emergence than that from bolls on the soil surface. Also, above-normal spring rainfall resulted in earlier emergence than that occurring in dry springs, from both environments, and consequently a higher percentage of the moths died before suitable fruiting forms Oil cotton were available for propagation. In general, the diapause period was longer than average lind was accompanied by a higher mortality during drought conditions from April through .June. As the planting date was delayed, so was the fruiting date, and moth emergence to infest cotton was greatly reduced in both environments.
Document Type: Research Article
Publication date: 1961-10-01
- 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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