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:4/13/2016)... , April 13, 2016  IMPOWER physicians supporting ... are setting a new clinical standard in telehealth thanks ... By leveraging the higi platform, IMPOWER patients can routinely ... pulse and body mass index, and, when they opt ... and convenient visit to a local retail location at ...
(Date:3/23/2016)... 2016 Einzigartige ... und Stimmerkennung mit Passwörtern     ... MESG ), ein führender Anbieter digitaler Kommunikationsdienste, ... SpeechPro zusammenarbeitet, um erstmals dessen Biometrietechnologie einzusetzen. ... Möglichkeit angeboten, im Rahmen mobiler Apps neben ...
(Date:3/18/2016)... --> --> Competitive Landscape ... Vehicles, Physical infrastructure and Perimeter Surveillance & Detection Systems ... market and the continuing migration crisis in the ... has led visiongain to publish this unique report, which is ... & security companies in the border security market and ...
Breaking Biology News(10 mins):
(Date:5/4/2016)... New York, NY (PRWEB) , ... May 04, 2016 , ... ... neurofibromatosis (NF), a genetic disorder that causes tumors to grow on nerves throughout the ... treatment or cure. , Through numerous community events held during the month of May, ...
(Date:5/4/2016)... ... May 04, 2016 , ... Nutrafol®, ... to help treat hormonal and stress related hair loss. With patent-pending formulas for ... of key opinion leaders in the medical and salon channels nationwide. , ...
(Date:5/3/2016)... ... ... In a list published by the Boston Business Journal, iLab Solutions ... percentage of the state's 615,000+ small businesses. The list examined companies based in the ... to 2015. , As this award comes on the heels of iLab’s ...
(Date:5/3/2016)... ... May 03, 2016 , ... Kerafast Inc., ... materials from laboratories across the globe, today announced the availability of a Zika ... of research toward treatment and prevention measures for the Zika virus, the virus’s ...
Breaking Biology Technology: