Invasion Patterns and Sex-ratio Dynamics of the Maize Weevil (Coleoptera: Curculionidae) Infesting Field Corn
Authors: Dix, D. E.; All, J. N.
Source: Journal of Economic Entomology, Volume 78, Number 5, October 1985 , pp. 1072-1075(4)
Publisher: Entomological Society of America
Abstract:Field populations of maize weevils, Sitophilus zeamais Motschulsky, were monitored during the 1981, 1982, and 1983 growing seasons in 19 cornfields located in the Georgia Piedmont and Coastal Plain. Colonizing weevils were predominately males (1.6 males:1.0 females) with the weevils per corn ear and weevil-infested corn ears clumped. Superior colonizing capabilities of males in conjunction with poor overwintering abilities of females are proposed to cause the male-skewed sex ratio. F1 and laboratory weevil populations were composed primarily of females (0.6 males:1.0 females), indicating female skewedness may be the common condition under periods of continuous reproduction.
Document Type: Research Article
Publication date: October 1985
- 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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