Authors: CHAN JR., HARVEY T.; JANG, ERIC B.

Source: Journal of Economic Entomology, Volume 88, Number 3, June 1995 , pp. 569-753(185)

Publisher: Entomological Society of America

Abstract:

The effects of dietary pH on hl1val development of the Mediterranean fruit fly, Ceratitis capituta (Wiedemann), were studied in laboratory and pilot scale mass-rearing operations. Laboratory scale diets were formulated at eight different initial pHs ranging from 3.2 to 8.0, and the effect on larvae were evaluated based on larval development time and pupal yield. Optimal larval development occurred at pH 5.0-5.5 and pupal yield was highest between 3.2 and 5.5. Diet pHs of 6.0 or higher were found to delay larval development and reduce pupal survival. Diet pHs of 3.2 and 4.0 also delayed larval development. Pilot-scale evaluations were subsequently conducted at pH 4.0 and 5.0 and compared with the normal Animal and Plant Health Inspection Service production diet for cumulative yield and pupal weight. Optimal diet pH for pupal size, larval yield, and rapid development was determined to be 5.0 in pilot-scale tests. Optimizing physiochemical factors such as pH can improve overall yield of mass-reared C. capitata.

Document Type: Research article

Publication date: 1995-06-01

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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