[nafex] FW: New Lure for Codling Moths
Lon J. Rombough
lonrom at hevanet.com
Wed Jun 20 08:57:25 EDT 2001
From: "ARS News Service" <isjd at ars-grin.gov>
To: "ARS News List" <ars-news at ars-grin.gov>
Subject: New Lure for Codling Moths
Date: Wed, Jun 20, 2001, 3:14 AM
New Lure Works Better Than Pheromones for Codling Moths
ARS News Service
Agricultural Research Service, USDA
June 20, 2001
Kathryn Barry Stelljes, (510) 559-6069, kbstelljes at ars.usda.gov
Apple, pear and walnut growers will soon have a new tool to control codling
moths, thanks to Agricultural Research Service scientists and a commercial
ARS entomologist Douglas M. Light discovered that one of the chemicals
responsible for a pear's sweet odor, known as the pear ester, attracts both
female and male codling moths. Light works at the Plant Protection Research
Unit of ARS' Western Regional Research Center (http://www.pw.usda.gov) in
Codling moths are the most severe and widely distributed pest of apples,
pears and walnuts in the world. Uncontrolled, the larvae--the "worm in the
apple"--can destroy up to 95 percent of an apple crop and up to 60 percent
of a pear crop. In walnuts, the larvae damage the nuts and create holes in
the hull and shell that can allow fungi to enter.
Pheromones, sex hormones produced by the females, are widely used in
monitoring and mating disruption programs, but only attract male moths.
Researchers estimate that 90 to 95 percent of male codling moths in an
orchard must be trapped or prevented from finding a mate to reduce the
number of fertile eggs laid by females to an economically manageable level.
Capturing female moths has an even greater potential to reduce offspring
without widespread spraying of chemicals.
Through a cooperative research and development agreement, Trécé, Inc., of
Salinas, Calif., is developing commercial monitoring tools using the pear
ester. Trécé also plans to include the attractant in a sprayable lure
formulation known as an "attracticide," which contains small amounts of
ARS and Trécé share a patent on this technology and additional patents are
A story on this research appears in the June issue of Agricultural
Research, the agency's monthly magazine. View it online at:
ARS is the chief scientific research agency of the U.S. Department of
This item is one of the news releases and story leads that ARS Information
distributes on weekdays to fax and e-mail subscribers. You can also get the
latest ARS news on the World Wide Web at
* Feedback and questions to ARS News Service via e-mail: isnv at ars-grin.gov.
* ARS Information Staff, 5601 Sunnyside Ave., Room 1-2251, Beltsville MD
20705-5128, (301) 504-1617, fax (301) 504-1648.
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