Navigation Links
1 missing gene leads to fruitless mating rituals
Date:7/23/2008

DURHAM, N.C. Male fruit flies missing a gene for one particular odor receptor become clueless in matters of love, scientists at Duke University Medical Center have discovered.

Because they lack the ability to read important chemical cues, these flies will indiscriminately attempt to have sex with other males, and with females who have already mated. The signals they're missing are pheromones wafting from mated females and male flies. The work appears online in Nature Neuroscience.

The researchers found that the signals from this pheromone receptor are so important to the flies that they are wired directly into the higher-order processing center of the fly's brain, which governs behavior. This direct connection surprised the scientists, who have studied other fruit fly courtship genes.

"It goes against the dogma that was established for the olfactory and taste systems," said Hubert Amrein, Ph.D., of the Duke Department of Molecular Genetics and Microbiology. "Our finding implies that signals from the outside don't have to go through processing stations in the chemosensory system before being connected to the higher-order brain structures."

Males without a gene called Gr32a, the gustatory receptor gene, showed normal levels of courtship with virgin females. But in competition with normal (or wild-type) male fruit flies, they were outperformed by 4 to 1. In fact, the Gr32a-lacking flies courted the male competitors in addition to the females.

To further investigate the role of the gene, researchers used decapitated, passive flies of both genders, because these do not provide any behavioral feedback that could confound the precise measurement of the sex appeal they held for the male flies being studied. Both types of males courted the decapitated virgin females equally. However, courtship attempts toward decapitated males increased only in the males lacking the Gr32a gene, and these flies attempted copulati
'/>"/>

Contact: Mary Jane Gore
mary.gore@duke.edu
919-660-1309
Duke University Medical Center
Source:Eurekalert

Page: 1 2

Related biology news :

1. Oldest Australian crayfish fossils provide missing evolutionary link
2. Scientists find missing evolutionary link using tiny fungus crystal
3. UCSB researcher leads worldwide study on marine fossil diversity
4. River damming leads to dramatic decline in native fish numbers
5. Study of marine snail leads to new insights into long-term memory
6. UC Davis researcher leads climate-change discovery
7. USGS science picks -- leads, feeds and story seeds
8. Restoring fish populations leads to tough choice for Great Lakes Gulls
9. Concentrating on different aspects of pain leads to breakthrough in migraine genetics
10. Exercise during pregnancy leads to a healthier heart in moms- and babies-to-be
11. Childrens Hospital leads projects to develop nations first heart assist devices for young children
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:12/11/2014)... Dec. 09, 2014 Research and Markets ... ( http://www.researchandmarkets.com/research/twhjll/biometrics_market ) has announced the ... APAC Region 2015-2019"  report to their offering. ... market is advances in technology. With continuous advances ... solutions to the latest standard that meets the ...
(Date:12/10/2014)... , Dec. 9, 2014  Valencell, a leader in ... seeing a staggering demand from its licensees for highly ... revealed, is not solely coming from fitness and health ... "A wearable is only as useful as ... is the ultimate driver in long-term mass consumer adoption ...
(Date:12/5/2014)... 2014 Increased emphasis on product quality, ... testing and inspection technologies. The convergence of industries ... range of innovative test solutions. This trend is ... which is generally more inclined towards communication, media ... strategies of test equipment vendors will cater to ...
Breaking Biology News(10 mins):Biometrics Market in the APAC Region 2015-2019: Key Vendors are 3M Cogent, NEC, Safran and Suprema 2Wearable Technology Products Demand Highly Accurate Biometric Technology 2Emerging Technologies Enable Smarter Monitoring of Assets, Push Industrial Testing, Inspection and Monitoring Market 2Emerging Technologies Enable Smarter Monitoring of Assets, Push Industrial Testing, Inspection and Monitoring Market 3Emerging Technologies Enable Smarter Monitoring of Assets, Push Industrial Testing, Inspection and Monitoring Market 4
... dominant hyenas have a steady, confident-sounding giggle, subordinate ones produce ... of their social hierarchy, according to a new University of ... giggle call of the spotted, or "laughing," hyena, UC Berkeley ... social status, but also about the age the pitch ...
... , (Nairobi, Kenya) Today the Ministry of Public Health ... (Division of Child and Adolescent Health), unveiled a renewed ... management and control efforts by putting proven interventions to ... at a time when global progress against diarrhoea has ...
... March 31, 2010 Mariam El-Ashmawy, a student enrolled ... Program, has been awarded a 2010 Gilliam Fellowship for ... Ms. El-Ashmawy, a Lewisville native, is one of ... this year from institutions across the country. Each fellow ...
Cached Biology News:Giggles give clues to hyena's social status 2Policy unveiled to combat diarrheal disease, a killer of Kenyan children 2Policy unveiled to combat diarrheal disease, a killer of Kenyan children 3UT Southwestern student receives fellowship from Howard Hughes Medical Institute 2
(Date:12/22/2014)... Dec. 22, 2014  ( www.competitivehealth.com ) — Competitive ... medical bill review and advocacy service, has signed an ... WellCard Savings discount health services marketplace. 63% ... more than they expected to pay. As part of ... costs, WellCard Savings is pleased to offer medical bill ...
(Date:12/22/2014)... 22, 2014 Fertility Associates of Memphis ... Bank USA , a network of more than 20 ... partnership, patients have fast access to a national pool ... IVF . Fertility Associates of Memphis is the only ... treatment option. , Dr. William Kutteh , director ...
(Date:12/19/2014)... BioPlus Specialty Pharmacy (BioPlus), one ... of Nick Maroulis, Pharm.D. to the newly created position ... In this position, Dr. Maroulis will continue to manage ... of our multi-site pharmacies as the company expands. Dr. ... that time he has served in many different capacities ...
(Date:12/19/2014)... Dec. 19, 2014 Bina Technologies, Inc. (Bina, ... that they have been acquired by Roche (SIX: RO, ... privately held company that provides a big data platform ... (NGS) data for the academic and translational research markets. ... and will continue to focus on development of their ...
Breaking Biology Technology:WellCard Savings Announces CoPatient Medical Bill Review Service for Members 2Fertility Associates of Memphis Announces Partnership with Donor Egg Bank USA 2Fertility Associates of Memphis Announces Partnership with Donor Egg Bank USA 3BioPlus Specialty Pharmacy Promotes Dr. Nick Maroulis to Vice President of Specialty Pharmacy Services 2Bina Technologies is acquired by Roche. 2Bina Technologies is acquired by Roche. 3
... 15, 2011   Ecology Coatings, Inc. (OTCQB: ECOC), ... announced that it has developed bio-based GRAS (generally recognized ... are GRAS, they can be used to make coatings ... placed in direct contact with food and food packaging. ...
... VILLAGE, Nev., Dec. 15, 2011 PDL BioPharma, Inc. (PDL) ... paid the December 15, 2011, regular quarterly dividend payment of ... as of December 8, 2011, the record date. ... About PDL BioPharma PDL pioneered the humanization of ...
... or socks that clean and de-odorize themselves when hung on ... railing. Scientists are reporting development of a new cotton fabric ... to ordinary sunlight. Their report appears in ACS Applied ... say their fabric uses a coating made from a compound ...
Cached Biology Technology:Ecology Coatings Develops Coatings Safe for Direct Contact with Food Products 2
ABCA1 Immunogen: Mouse ABCA1-expressing HeLa stable transfectants. Storage: -20 C, Avoid Freeze/Thaw Cycles...
Anti-rat Dipeptidyl Peptidase IV (DPP IV), CD26, Clone 5E8, Monoclonal Antibody...
JAB1 Immunogen: Synthetic peptide, conjugated to KLH, corresponding to residues S(201) E Y Q T I P L N K I E D F G V(216) of human JAB1. The sequence is identical in mouse and rat. Storage: -...
... used to detect the appearance of AcNPV ... cells as early as 8-24 hours post-infection. ... Titer Kit, which allows determination of baculovirus ... The FastPlax Antibody can also be used ...
Biology Products: