Monday, 15 November 2004

Chemical attractants for Autographa californica and Helicoverpa zea (Lepidoptera: Noctuidae) and the female reproductive state of adults captured under a bait station system

Leonardo De A. Camelo, leocamelo@wsu.edu1, Peter J. Landolt2, Richard S. Zack, zack@mail.wsu.edu1, and Daryl Green, dgreen@pear.yarl.ars.usda.gov2. (1) Washington State University, Department of Entomology, Pullman, WA, (2) USDA-ARS, 5230 Konnowac Pass Road, Wapato, WA

Pesticide applications and genetically engineered crops are the most common methods for controlling caterpillars of noctuid moths in North America. The large number of species and the significant damage caused by this taxon make them significant pests. The Food Quality and Protection Act, growing environmental issues, and worker safety related concerns have led scientists to research and develop alternative approaches to controlling these insects; one such program is “attract and kill”. We have developed a series of floral chemical lures from compounds derived from “noctuid-visited” flowers. Attractants are dispensed from polypropylene vials that provide controlled release rates for extended periods of time. A killing station is being tested in the field for use in combination with these lures as an “attract and kill” system. Bait stations are implemented to reduce numbers of female moths before they are able to lay eggs. The male/female attraction ratio to developed lures is 1/1. Field trials were conduced in alfalfa fields in the Yakima Valley (Washington) during the 2003 and 2004 growing seasons. The reproductive state of captured moths was assessed following the protocol developed by Hitchcox (2000) for the Lacanobia fruitworm. Activity of female Autographa californica adults in alfalfa fields was significantly reduced by the use of 50 bait stations per acre containing the floral chemical lure.

Species 1: Lepidoptera Noctuidae Autographa californica (Alfalfa Looper)
Species 2: Lepidoptera Noctuidae Helicoverpa zea (Corn earworm)
Keywords: chemical lure, reproductive state

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