Controlled Atmosphere and Temperature Treatment System to Disinfest Fruit Moth, Carposina sasakii (Lepidoptera: Carposinidae) on Apples

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Abstract:

Carposina sasakii Matsumura (Lepidoptera: Carposinidae) is a serious pest of apples and peaches in Korea and Japan. Because of its limited distribution, C. sasakii has been identified as a quarantine pest in several countries. The Controlled Atmosphere/Temperature Treatment System (CATTS) was tested as an alternative to methyl bromide fumigation to control C. sasakii in apples. The fifth instar was the most tolerant immature stage to a heat treatment of 44°C for 20 min. When the apples infested with different stages of C. sasakii were treated under CATTS conditions (heating rate of 16°C/h, chamber temperature of 46°C, final core temperature of 44°C under 1% O2/15% CO2 atmosphere), young larvae (first‐fourth instars) did not survive after 40 min exposure, but the fifth instars required an exposure of at least 60 min to attain 100% mortality. A partial heat shock protein 90 (hsp90) was cloned and showed inducible expression in response to heat shock at 44°C. CATTS suppressed transcription of the hsp90 gene. Apples did not show any appreciable loss of quality in relation to fruit firmness, sweetness, and decay after a 60 min CATTS treatment. These results suggest that CATTS can be applicable to control C. sasakii in apples.

Keywords: CATTS; Carposina sasakii; apple; heat shock

Document Type: Research Article

DOI: http://dx.doi.org/10.1603/EC12133

Publication date: October 1, 2012

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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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