Leaf Consumption and Development of Tobacco Hornworm Larvae Feeding on Burley and Dark Tobacco
Authors: JONES, GEORGE A.; THURSTON, RICHARD
Source: Journal of Economic Entomology, Volume 63, Number 6, 15 December 1970 , pp. 1938-1941(4)
Publisher: Entomological Society of America
Abstract:Leaf consumption and development of larvae of Manduca sexta (Johannson) feeding on burley and dark tobacco grown in the field and the greenhouse were studied. Recording leaf consumption with a Xerox 914 Copying Machine® and measuring the area consumed with a polar planimeter was rapid, convenient, and accurate.
Larvae reared on burley tobacco grown in the greenhouse consumed almost twice as much leaf area as larvae reared on burley tobacco grown in the field, but the dry weight of the field-grown tobacco was greater than that of the greenhouse-grown tobacco. Larvae that fed on field-grown dark tobacco consumed the smallest leaf area, but the dry weights of field-grown burley and dark tobacco consumed were very close, 6.054 and 6.468 grams, respectively. The source of the leaf did not a fleet the percentage of total leaf eaten by the various instars; the accumulative average was 0.07% by the 1st, 0.32% by the 2nd, 1.25% by the 3rd, 7.48% by the 4th, and 90.88% by the 5th instar. Larvae that fed on field-grown and greenhouse-grown burley tobacco completed development in an average of 15.7 and 18.5 days, respectively; the former produced the heaviest and the latter the lightest pupae.
Document Type: Research Article
Publication date: December 15, 1970
- 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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