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Effects of Duration and Intensity of Sifting Pupae of Various Ages on Adult Eclosion and Flight Capability of the Mediterranean Fruit Fly (Diptera: Tephritidae)

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Laboratory-reared pupae of Ceratitis capitata (Wiedemann) (medfly), held at 21.1°C, were agitated at intensities of 10 to 50 rpm for various time periods in a simulated rotary sifting device at 3, 4, 5, 6, 7, and 11 days of age, and subsequent effects on adult eclosion and flight capability were determined. Eclosion rates decreased with increasing agitation intensity or duration, and the rates of decrease were nearly similar for 3- to 7-day-old pupae, but less for 11-day-old pupae. The occurrence of nonfliers also increased as the intensity and duration of agitation were increased, but there were differences in sensitivity among ages, with 5-day-old pupae being most sensitive, followed by 4-,3-, and 6-day-old pupae, whereas 7- and 11-day-old pupae were unaffected. The production of nonflying medflies depends upon the intensity and duration of the agitation, but only during the critical period of development.

Document Type: Research Article

Publication date: October 1, 1982

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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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