Effects of Food Type, Duration of Hibernal Quiescence, and Weevil Density on Longevity of Sitona lineatus (Coleoptera: Curculionidae)

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Adult longevity of Sitona lineatus (L.) was significantly affected by the kind of food provided and weevil density. Weevils maintained as single reproductive pairs and fed pea foliage lived longer than those fed alfalfa, whereas if maintained in groups of 13 reproductive pairs, the alfalfa-fed weevils lived longer in three of six months of field collection. The shortest life spans for weevils in low or high densities were observed when weevils were fed lentil foliage or starved. Female S. lineatus lived significantly longer than males when maintained as single reproductive pairs, but there were no significant differences between female and male longevity when weevils were kept in groups of 13 reproductive pairs. The spring migrational state of the weevils and the number of months spent in hibernal quiescence also had a significant effect on longevity.

Document Type: Research Article

Publication date: December 1, 1988

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  • 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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