HOME >> BIOLOGY >> NEWS
Flies may taste bitter better, first map of insect 'tongue' reveals

DURHAM, N.C. -- The first sensory map of the fly equivalent of a tongue suggests that insects have discriminating taste -- perhaps trumping that of mammals in the ability to differentiate among bitter flavors. The findings could ultimately prove useful in the development of improved pest repellants, said the Duke University Medical Center researchers.

According to the team's analysis, specialized cells in the fruit fly's primary taste organ, the labellum -- a structure on the fly's head that looks like a pair of lips covered in bristles -- respond to either sweet or bitter flavors, much like cells of the human tongue. However, while earlier work suggested mammalian bitter tasting cells are all alike, the Duke researchers found that different sets of bitter-sensitive nerve cells on the fly "tongue" bear distinct combinations of taste receptors, the Duke team found. Receptors are the protein switches that trigger the nerve cells to send signals to the brain's taste-processing centers in response to particular food items or other chemicals.

The unique coding of the flies' tasting cells raises the possibility that insects can discern among different bitter tastes more precisely than can humans or other mammals, said Hubert Amrein, Ph.D., assistant professor of genetics and lead author of the study. Amrein and his colleagues reported their findings in the June 22, 2004, issue of Current Biology. The work was supported by the National Institutes of Health.

"Our findings suggest that the sensory systems for taste in insects and mammals are set up in a remarkably similar manner, despite the fact that the structure of the taste organs are so different and that the genes involved bear no relationship to one another," Amrein said.

The fly's potentially more discriminating sensitivity to bitter tastes -- generally associated with unpalatable food or toxins -- might allow them to select the best food item among multiple suboptimal choices, Amrein
'"/>

Contact: Kendall Morgan
kendall.morgan@duke.edu
919-684-4148
Duke University Medical Center
21-Jun-2004


Page: 1 2 3

Related biology news :

1. Flies offer clues to anesthesia-resistant memory
2. Scientists, Using Flies, Trace Genetic Links To Cancer
3. For Fruit Flies, Finding The Right Mate May Mean Offspring With A Longer Life Span, According To New Study
4. Two Modes Of Aging Discovered In Fruit Flies
5. Scientists Discover Two Modes Of Aging In Fruit Flies
6. Monogamy Has Its Rewards For Flies
7. UF Researchers Innovative Fence Helps Control Sand Flies
8. Drunken Fruit Flies Reveal Molecular Pathway Regulating Sensitivity To Alcohol
9. Fruit Flies May Shed Light On Cocaine Addiction
10. Two Parasitic Wasps Show Promise For Controlling Pest Flies
11. Malnutrition Impacts Longevity Of Females More Than Males And Shows Gender Differences In Fruit Flies

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


(Date:3/12/2019)... ... 12, 2019 , ... FEITIAN Technologies US Inc. , ... announced today the launch of two new payment card types which can both ... cards. These advanced technologies will help all elements of the payment card chain, ...
(Date:3/9/2019)... ... 07, 2019 , ... A firm believer in causes greater than all of ... This donation will help fund not only research to find a cure, but services ... are always on the lookout for ways to make a difference. When The Leukemia ...
(Date:3/9/2019)... ... March 09, 2019 , ... ... & hM4Di ligands – exciting compounds for scientists studying GPCR and DREADD signalling. ... Abuse and the National Institute of Neurological Disorders and Stroke, both institutes of ...
Breaking Biology News(10 mins):
(Date:2/19/2019)... ... February 19, 2019 , ... VetStem Biopharma has long ... In October 2018, VetStem authorized the formation of Personalized Stem Cells, Inc (“PSC”), ... cell patents, data, and FDA filings to launch into human stem cell clinical therapy. ...
(Date:2/14/2019)... ... 14, 2019 , ... Leak Detection Associates (LDA), ... biotechnology and food industries, formally announced today the appointment of two key leadership ... named Chief Executive Officer and will oversee all aspects of the company’s operations, ...
(Date:2/6/2019)... ... February 05, 2019 , ... Firmex ... executive management team to acquire Firmex, one of the fastest-growing and most widely-used ... Montreal-based private equity firm. Debt financing was provided by the Bank of Montreal. ...
(Date:2/2/2019)... ... ... Dust off your Doc Martens, Virun Nutra-BioSciences is fusing punk rock with ... and Tech Festival at the ESports Arena in Santa Ana on Wednesday afternoon, March ... dietary supplement industries, the Nuriv Music and Tech Festival is scheduled one day prior ...
Breaking Biology Technology:
Cached News: