Effects of Several Temperature and Humidity Regimens on Eggs of Six Species of Lepidopterous Pests of Cotton in Arizona
Authors: Fye, R. E.; Surber, D. E.
Source: Journal of Economic Entomology, Volume 64, Number 5, 15 October 1971 , pp. 1138-1142(5)
Publisher: Entomological Society of America
Abstract:No adverse effects on eggs of the bollworm, Heliothis Zea (Boddie), resulted from exposures for 2, 4, 8, 16, and 24 hr to 35°C and 10, 20 and 40% RH, but some reduction in hatch occurred during the 2nd 4-hour exposure to 40° and 10% RH, and hatch of eggs exposed for the longer periods was low. Similar results were obtained with eggs of the tobacco budworm, H. virescens (F.), except that no hatch occurred during the 24-hour exposures at 35° and 10% RH and at 40°C, the 1st reduction in hatch occurred during the 3rd exposure period in 10% RH. Eggs of the beet armyworm, Spodoptera exigua (Hübner), failed to hatch after 1 exposure of 20 hours to 35° and 10% RH and 1 of 8 hours to 40°C and 10% RH; hatch was low in eggs exposed 8 hours or more to 40°C. Similar results were obtained with eggs of the cabbage looper, Trichoplusia ni (Hübner), but the eggs hatched somewhat better at the high temperatures and low humidities. Hatch of eggs of the saltmarsh caterpillar, Estigmene acrea (Drury), was severely reduced by exposures of 16 hours or more to 35° and 4 hours or more to 40°C. Hatch of eggs of the pink bollworm, Pectinophora gossypiella (Saunders), was severely reduced after 2 exposures of 16 hours or more to 35°C and 10 and 20% RH, after 4-hour exposures to 40°C and 10% RH, and by 1 or more exposures of 16 hours or more to 40°C.
Document Type: Research Article
Publication date: October 15, 1971
- 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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