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Greenhouse studies involving interactions of six varieties of Cucurbita spp. and the squash bug, Anasa tristis (De Geer) (Corei dae, Hemiptera), indicate that Butternut is the most resistant and Black Zucchini is the most susceptible of the group. A smaller amount of plant sap was removed from the more resistant plants. Lack of preference appeared to be the major factor involved in resistance. However, the resistant plants produced an antibiotic effect on nymphal development. Nymphs reared on Black Zucchini and Pink Banana attained a significantly later instar and lived longer than those reared on the other four varieties. Tolerance did not seem to be involved in the greenhouse studies. The order of resistance of the six varieties from high to low was Butternut, Royal Acorn, Sweet Cheese, Green Striped Cushaw, Pink Banana and Black Zucchini.
Document Type: Research Article
Publication date: December 1, 1962
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.