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United States Department of Agriculture

Agricultural Research Service

Title: Artificial Fruit Fly Larval Rearing at 21st Century

Author
item Chang, Chiou Ling

Submitted to: Meeting Abstract
Publication Type: Other
Publication Acceptance Date: October 17, 2004
Publication Date: March 3, 2005
Citation: Chang, C.L. 2005. Artificial fruit fly larval rearing at 21st century. Meeting abstract at the 8th exotic fruit fly symposium, Riverside, California, March 7-9, 2005. p58.

Interpretive Summary: A novel liquid larval diet and its rearing system was developed in 2004 for laboratory scale of Bactrocera cucurbitae fruit fly production. The diet was composed of brewer's yeast, sugar, antifungal agents (sodium benzoate and nipagen), citric acid, and distilled water. Sponge cloth was used as a support substrate for larvae, alleviating the need for the biological bulking agent (such as mill feed). Similar diet and system were developed for Bactrocera dorsalis in a factory sccale production. Both laboratory and factory scales rearing were evaluated and compared based on the following parameters: developmental period, pupal yield, pupal weight, adult emergence, flight ability, mating ability, fecundity, fertility, F1 egg hatch. Benefits derived from a liquid diet rearing include reduction in post-rearing waste, alleviation of (pesticide-free) bulking agent, reduction in diet ingredient storage and labor and result in cost-effective and environmental friendly rearing. These benefits must be weighed against any reductions in production and size when large-scale mass rearing of fruit flies for use in sterile insect release programs are evaluated.

Technical Abstract: A novel liquid larval diet and its rearing system was developed in 2004 for laboratory scale of Bactrocera cucurbitae fruit fly production. The diet was composed of brewer's yeast, sugar, antifungal agents (sodium benzoate and nipagen), citric acid, and distilled water. Sponge cloth was used as a support substrate for larvae, alleviating the need for the biological bulking agent (such as mill feed). Similar diet and system were developed for Bactrocera dorsalis in a factory sccale production. Both laboratory and factory scales rearing were evaluated and compared based on the following parameters: developmental period, pupal yield, pupal weight, adult emergence, flight ability, mating ability, fecundity, fertility, F1 egg hatch. Benefits derived from a liquid diet rearing include reduction in post-rearing waste, alleviation of (pesticide-free) bulking agent, reduction in diet ingredient storage and labor and result in cost-effective and environmental friendly rearing. These benefits must be weighed against any reductions in production and size when large-scale mass rearing of fruit flies for use in sterile insect release programs are evaluated.

Last Modified: 8/27/2014
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