HOME >> BIOLOGY >> NEWS
Sex pheromone blocked in bug

Science can put a dent in the sex life of a scarab beetle by blocking its ability to pick up female scent, according to Walter Leal, professor of entomology at UC Davis. The research could eventually lead to methods to control insect pests without affecting harmless or beneficial insects.

"Chemical communication is the prime means of communication in insects," Leal said. If those communications can be controlled in the environment, insect pests could be prevented from breeding, he said.

Female pale-brown chaffers, a scarab beetle that is an agricultural pest in Japan, release a chemical signal or pheromone to attract males.

Insects smell through their antennae. Inside the antennae, pheromone molecules hit a specific switch that sends a nerve signal to the insect's brain. Before the switch can fire again, it must be reset by removing the pheromone, like a wine-taster rinsing her palate.

As they fly toward the female, the male beetles come across wafts of pheromone separated by periods of no scent. To get an accurate reading and stay on course, the beetle must constantly reset its pheromone detection system.

Leal worked with Martine Maibeche-Coisne and Emmanuelle Jacquin-Joly at the Institut National de la Recherche Agronomique in Paris, France; Alexander Nikonov at the National Institute of Agrobiological Sciences in Tsukuba, Japan; and Yuko Ishida at UC Davis. They identified an enzyme called CYP4AW1, expressed in the antennae, that breaks down the pheromone.

When beetles were exposed to both pheromone and metyrapone, a chemical that specifically blocks the enzyme, they could smell the pheromone at first but then could not reset their antennae. They were unable to smell new doses pheromone for several minutes.

The treatment had no effect on other insects, because the enzyme is very specific to that pheromone, Leal said.

The same principles could be ap
'"/>

Contact: Andy Fell
ahfell@ucdavis.edu
530-752-4533
University of California - Davis
9-Aug-2004


Page: 1 2

Related biology news :

1. Asian elephant sex pheromone transporter revealed
2. Fruit fly pheromone receptor first ever discovered linked to specific sexual behavior
3. Researchers record first pheromone images in brains of mice
4. Sex-pheromone link to insect evolution
5. Rockefeller researchers provide the first functional evidence for mammalian pheromone receptors
6. Both smells and pheromones may arouse instinctive behaviors in mammals
7. Male courtship pheromone identified
8. Kidney injurys harmful effects on bones blocked in mice
9. New drugs restore immune response blocked by hepatitis C virus in human cells

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:10/1/2018)... ... October 01, 2018 , ... Paragon Biosciences CEO Jeff Aronin was recently ... and for his work bringing life-altering drugs to patients in need. Jeff’s vision has led ... earned by the R&D teams now at Paragon and its portfolio companies. , ...
(Date:9/28/2018)... (PRWEB) , ... September 28, 2018 , ... ... DNA profiles previously thought to be too complex to interpret – “is scientifically ... the Virgin Islands. , Denying a defense motion for a Daubert hearing on ...
(Date:9/27/2018)... ... September 27, 2018 , ... ... knowledge encoded into synthetic DNA by Microsoft, Twist Bioscience Corporation, and the University ... feature 10,000 crowdsourced images and the full text of 20 important books, among ...
Breaking Biology News(10 mins):
(Date:9/28/2018)... ... September 28, 2018 , ... ... tech innovators, engineers, and scientists from around the world, is excited to announce ... of San Marcos, as the winner of the LabRoots Summer 2018 Textbook Scholarship, ...
(Date:9/27/2018)... ... September 27, 2018 , ... ... Everwell Health Solutions and SureAdhere Mobile Technology, Inc. announced they will formally merge ... in the battle against tuberculosis (TB) and other diseases. These two social enterprise ...
(Date:9/22/2018)... ... September 21, 2018 , ... ... and pathogenesis requires tools that can rapidly and consistently quantify the expression ... Imaging by Time-Of-Flight (MIBI-TOF) detects elements from hydrogen to uranium, permitting simultaneous ...
(Date:9/12/2018)... ... September 11, 2018 , ... Leading regenerative ... of Feline Practitioners Conference (AAFP) later this month. The company’s CEO ... therapy for the treatment of chronic kidney disease in felines at a poster ...
Breaking Biology Technology:
Cached News: