Biology of a Carrot Weevil, Listronotus texanus (Coleoptera: Curculionidae): Range and Seasonality of Infestations

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Abstract:

Results of sampling 60 commercial carrot fields in the lower Rio Grande Valley, Tex., showed that a carrot weevil,Listronotus texanus (Stockton),occurs throughout the carrot production area. Surveys of various cultivated crops and weed species showed that the primary hosts of the weevil are plants belonging to the family Umbelliferae and that other common weed species that occur in the area are not major hosts. Intensive sampling of two commercial and one research carrot field showed that adult weevils began moving into the fields and laying eggs within 62 days of planting. Weevil populations continued to increase in the fields due to immigration or reproduction. Traps similar to those utilized in the northcentral United States and Canada to monitor populations of L. oregonensis (LeConte) were not very effective for monitoring L. texanus populations.

Document Type: Research Article

Publication date: August 1, 1985

More about this publication?
  • 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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