Authors: MARKWICK, NGAIRE P.; REID, SUZANNE; LAING, WILLIAM; CHRISTELLER, JOHN T.

Source: Journal of Economic Entomology, Volume 88, Number 1, February 1995 , pp. 33-39(7)

Publisher: Entomological Society of America

Abstract:

A linear relationship was found between mean larval weight gain and dietary casein levels in the codling moth, Cydia pomonella (L.). When protease inhibitors were added to artificial diets, the effects on growth rate of codling moth larvae were more pronounced where the dietary casein level was higher. Potato proteinase inhibitor 1 was the most effective single proteinase inhibitor in reducing growth rate, followed by soybean trypsin inhibitor. However, the most significant reductions in growth rate occurred with larvae fed diets containing a combination of potato proteinase inhibitor 1 and carboxypeptidase inhibitor. Predominant larvae gut proteolytic activities were elastase like endopeptidase activity and leucine aminopeptidase. Larvae that had chronically ingested the elastase inhibitors potato proteinase inhibitor 1 and eglin C, or combinations of protease inhibitors that included potato proteinase inhibitor 1, showed significantly lower elastase like activity.

Document Type: Research article

Publication date: 1995-02-01

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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