Pecan Weevil: Feeding and Initial Oviposition as Related to Nut Development
Author: Calcote, Vernon R.
Source: Journal of Economic Entomology, Volume 68, Number 1, February 1975 , pp. 4-6(3)
Publisher: Entomological Society of America
Abstract:Individual unmated males, unmated females, and pairs of Curculio caryae (Horn) were confined to nut clusters on 'Stuart' variety pecan trees in 1972 to study feeding damage and oviposition in relation to nut development. Through Aug. 14, male weevils penetrated the nut shell and caused immature nuts to fall; thereafter, as the shells hardened, males penetrated through the shucks only. Virgin females caused slightly more fallen nuts (drops) over a longer period. The majority of nuts punctured before Aug. 18 fell in 6–15 days; nuts punctured after Aug. 18 remained green and adhered to the tree past normal harvest. Individual male and female pecan weevils destroyed an average 0.23 and 0.29 nuts/day, respectively, July 26–Aug. 14. Mated females began oviposition Aug. 18, the date when a thin cotyledonous layer formed inside that seed coat. Effective oviposition started Aug. 23.
Document Type: Research Article
Publication date: 1975-02-01
- 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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