Navigation Links
Pear pest's chemical 'come hither' identified
Date:7/2/2010

This release is available in Spanish.

Pear psylla is a cicada-like pest with a vexing tendency to develop resistance to insecticides. But now, a new weapon could be in the works.

Agricultural Research Service (ARS) and University of California-Riverside (UCR) scientists have jointly identified a key component of the female psylla's chemical sex attractant, or pheromone, which could set the stage for luring amorous males to their doom.

Entomologists Christelle Gudot, Dave Horton and Peter Landolt at the ARS Yakima Agricultural Research Laboratory in Wapato, Wash., discovered the compound, 13 methyl heptacosane (13-MeC27), in collaboration with Jocelyn Millar, a professor of entomology at UCR's College of Natural and Agricultural Sciences.

Besides luring male psylla onto sticky traps, the compound's discovery could give rise to lures for either monitoring the pest or disrupting its mating. Both approaches could diminish the reliance on insecticides--saving growers money, sparing beneficial insects, and forestalling the pest's development of insecticide resistance.

Pear psylla's most damaging stage is the nymph. The flat, red-eyed nymphal stage causes reductions in fruit quality as its honeydew drips onto and marks developing fruit. Heavy infestations cause premature leaf fall and loss of yield.

Researchers performed chemical analyses and behavioral assays to isolate and then identify the volatile chemicals extracted from female pear psylla that were most attractive to males. The team's studies showed that 13-MeC27 was the most attractive of several chemicals evaluated. Laboratory assays were then done which confirmed that the attractiveness of the compound to males was equivalent to male response to females. Experiments in pear orchards confirmed that the compound is attractive to males and can be used to bait traps to capture pear psylla.

Under a patent application filed in September 2009 by ARS on behalf of the U.S. Department of Agriculture (USDA), the scientists intend to combine 13-MeC27 with other attractants to produce blends for use in pheromone dispensers, bait stations or traps.

The team published its findings in the Journal of Chemical Ecology.


'/>"/>

Contact: Jan Suszkiw
jan.suszkiw@ars.usda.gov
301-504-1630
United States Department of Agriculture-Research, Education, and Economics
Source:Eurekalert

Related biology news :

1. Balanced ecosystems seen in organic ag better at controlling pests
2. Bugging out: NC State researchers help track wayward pests through mapping
3. Hidden habits and movements of insect pests revealed by DNA barcoding
4. Fungal fumes clear out crop pests
5. Genome advances peril for pests
6. Cape tulips -- pretty but pests in pastures
7. National assessment done on potential invasive snail and slug pests in US
8. Purdue study suggests warmer temperatures could lead to a boom in corn pests
9. Research required urgently to control planthopper pests
10. Purging the plantain pests in Africa
11. UD prof helps discover new chemical method important to drug design, agrichemicals
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:1/6/2017)... , Jan. 6, 2017  Privately-held CalciMedica, Inc., ... in healthy volunteers of a novel calcium release-activated ... acute pancreatitis. Acute pancreatitis, sudden ... mild disorder, but can be very serious.  In severe ... sepsis, where extended hospital stays, time in the ...
(Date:1/4/2017)... , Jan. 4, 2017  CES 2017 – ... biometric sensor technology, today announced the launch of ... sensor systems, the highly-accurate biometric sensor modules that ... biometric technology, experience and expertise. The two new ... designed specifically for hearables, and Benchmark BW2.0, a ...
(Date:12/20/2016)... 2016 The rising popularity of mobility ... is stoking significant interest in keyless access systems. ... low energy (BLE), biometrics and near-field communication (NFC) ... of wireless technologies in the automotive industry. This ... access systems opens the market to specialist companies ...
Breaking Biology News(10 mins):
(Date:1/24/2017)... (PRWEB) , ... January 24, 2017 , ... ... commercially available malaria Plasmodium falciparum culture panels with standard concentrations of histidine rich ... are available in a range of concentrations from six different malaria strains, are ...
(Date:1/24/2017)... ... 2017 , ... The Foundation for Food and Agriculture Research, ... career nominees for the 2017 New Innovator in Food and Agriculture Research Award. ... in which one in nine people suffers from hunger. The Foundation for Food ...
(Date:1/24/2017)... CORAL GABLES, Fla. , Jan. 23, 2017 ... interdisciplinary network focused on scientific discovery and solutions, ... is creating the Frost Institutes for Science and ... technology, engineering, and mathematics (STEM) to help solve ... University of Miami President Julio Frenk ...
(Date:1/24/2017)... -- Today, the Fisher Center for Alzheimer,s Research Foundation is ... that could lead to the development of effective drugs ... groundbreaking research was conducted by the Fisher Center scientists ... Paul Greengard , in the quest to find ... scientists have linked a mutation that protects elderly people ...
Breaking Biology Technology: