Navigation Links
Battle of the sexes, fruit-fly style
Date:11/24/2010

BOSTON, Mass. (Nov. 23, 2010) Pity the female fruit fly. Being a looker is simply not enough. To get a date, much less a proposal, you have to act like a girl, even smell like one. Otherwise, you might just have a fight on your hands.

Like most animals, fruit flies must distinguish between a potential mate and a potential competitor. When a male fruit fly suspects he's encountered a female, he'll court; when he senses the other is a male, he'll fight. What triggers these sex-specific responses?

According to new research by scientists at Harvard Medical School, the answer lies with both pheromonal profiles and behavioral patterns. The researchers investigated the effects of taste and action by manipulating a gene that governs both the sex specificity of a fruit fly's body-surface hydrocarbons, or pheromones, and the sex-linked behavioral cues that issue through the dense nerve-cell network that constitutes the fly's brain.

"These findings underscore the importance of behavioral feedback in the manifestation of aggression," says Edward Kravitz, the George Packer Berry Professor of Neurobiology at Harvard Medical School.

The research is published in the November 23 issue of PLoS Biology.

Mara de la Paz Fernndez and Yick-Bun Chan, post-doctoral researchers in the Kravitz lab, discovered these links to aggression when investigating whether a male fruit fly would ever attack a female. They focused on a particular gene called transformer, which is active in females but not in males. Through blocking transformer expression in a variety of different tissues in females, the researchers could specifically alter the "femaleness" or "maleness" of the pheromones, which in turn altered the patterns of aggressive behavior encoded in the fly's brain.

When they changed pheromone profiles so that females "tasted" like males, the researchers found that males would attack them. This indicated that pheromonal cues alo
'/>"/>

Contact: David Cameron
david_cameron@hms.harvard.edu
617-432-0441
Harvard Medical School
Source:Eurekalert

Page: 1 2

Related biology technology :

1. BD and FIND Achieve Milestone in Global Battle Against MDR-TB
2. Intensive Lifestyle Intervention Program for Overweight or Obese Patients with Nonalcoholic Steatohepatitis Reduces Weight and Improves Overall Liver Health
3. BodyMedia, Inc. Launches GowearFit, the First Direct-to-Consumer Lifestyle and Calorie Management System
4. Photos: Project Runways Tim Gunn Launches Addressing Psoriasis(TM) Campaign to Advocate That Patients Shouldnt Let Psoriasis Impact Personal Style
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:1/15/2014)... 2014 The Microcompetition with Foreign DNA ... disease. One of these latent viruses is the Epstein ... rheumatoid arthritis (RA). Rheumatoid arthritis (RA) is a chronic ... by the theory, a study found that RA patients ... (1). , What is Microcompetition? , Dr. Hanan ...
(Date:1/15/2014)... Sunnyvale, CA (PRWEB) January 15, 2014 ... of high throughput research solutions, today announced that ... companies, has received delivery of Freeslate’s CM ... form screening. , Lupin, headquartered in Mumbai, ... quality, affordable generic and branded formulations and Active ...
(Date:1/14/2014)... (PRWEB) January 14, 2014 Date: Friday, ... p.m. , Location: Warrington Country Club, 1360 Almshouse Road, ... Foundation, the only national nonprofit organization solely dedicated to ... quality of life for those affected worldwide, will host ... Warrington Country Club in Warrington, Pa. , Each ...
(Date:1/14/2014)... , Jan. 14, 2014  3D Communications, a leading provider ... major scientific, regulatory, business, and media events in ... , today announced its former associate Virginia Cox , ... office. Virginia Cox re-joins ... Commissioner for the Office of External Affairs at the U.S. ...
Breaking Biology Technology:Study: Rheumatoid Arthritis (RA) Patients Have EBV; The CBCD Says this is Consistent with Microcompetition 2Study: Rheumatoid Arthritis (RA) Patients Have EBV; The CBCD Says this is Consistent with Microcompetition 3Lupin Selects Freeslate’s CM Protégé PharmD System to Accelerate Polymorph Screening for Drug Development 2Lupin Selects Freeslate’s CM Protégé PharmD System to Accelerate Polymorph Screening for Drug Development 3Hepatitis B Foundation to Host Annual Crystal Ball Gala 2Former FDA Associate Commissioner Returns To 3D Communications 2
... May 3, 2011 Cynosure, Inc. (NASDAQ: CYNO ) ... 2011. Revenues for the first quarter of 2011 ... same period of 2010.   Net loss for the first quarter ... share, compared with a net loss of $2.8 million, or $0.22 ...
... May 3, 2011 BioNeutral Group, Inc. (OTCBB: ... announced that it has signed on to introduce ... technology to the infection control professionals attending the ... Infection Control and Epidemiology) ( www.apic.org ). Ygiene® ...
... 2011 Techne Corporation (NASDAQ: TECH ) ... of Tocris Holdings Limited and subsidiaries (Tocris), a leading ... products are used in both in-vitro and in-vivo experiments, ... focused on making biologically active neuro- and bio-chemicals which ...
Cached Biology Technology:Cynosure Reports Financial Results for the First Quarter of 2011 2Cynosure Reports Financial Results for the First Quarter of 2011 3Cynosure Reports Financial Results for the First Quarter of 2011 4Cynosure Reports Financial Results for the First Quarter of 2011 5Cynosure Reports Financial Results for the First Quarter of 2011 6BioNeutral to Premier its EPA-Approved Ygiene® 206 Hospital-Grade Disinfectant at the Annual 2011 APIC Conference, While Community Health of South Florida Begins Product Review 2BioNeutral to Premier its EPA-Approved Ygiene® 206 Hospital-Grade Disinfectant at the Annual 2011 APIC Conference, While Community Health of South Florida Begins Product Review 3BioNeutral to Premier its EPA-Approved Ygiene® 206 Hospital-Grade Disinfectant at the Annual 2011 APIC Conference, While Community Health of South Florida Begins Product Review 4Techne Corporation Announces Acquisition 2Techne Corporation Announces Acquisition 3Techne Corporation Announces Acquisition 4Techne Corporation Announces Acquisition 5
(Date:4/15/2014)... Goddard Space Flight Center in Greenbelt, Md., is ... project support staff. At Goddard, some of the ... place, and some of that cutting-edge innovation has ... , The Swedish Society for Anthropology and Geography ... a person who has shown excellence in the ...
(Date:4/15/2014)... Diana Lados, associate professor of mechanical ... founding director of the university,s Integrative Materials ... career achievement awards from leading engineering societies. ... SAE International, a global association of more ... in the automotive, aerospace, and commercial vehicle ...
(Date:4/15/2014)... If an insect drew a line as it chased ... tangled mess. But there,s method to that mess, says ... and physics, who tries to find simple physical explanations ... , It turns out the tiger beetle, known ... dance as it chases its prey at blinding speeds. ...
Breaking Biology News(10 mins):Goddard scientist receives Vega Medal from King of Sweden 2WPI's Diana Lados honored by SAE International and Minerals, Metals, and Materials Society 2WPI's Diana Lados honored by SAE International and Minerals, Metals, and Materials Society 3WPI's Diana Lados honored by SAE International and Minerals, Metals, and Materials Society 4WPI's Diana Lados honored by SAE International and Minerals, Metals, and Materials Society 5Photo: Tiger beetle's chase highlights mechanical law 2
... centre have uncovered a gene that could help to develop ... with the changing world climate. Researchers funded by the Biotechnology ... Centre in Norwich have identified the gene in barley that ... length of the day. This is key to understanding how ...
... national avian flu conference last fall believe there is little ... stockpile enough vaccine or antiviral medication to stop a bird ... can be spread easily from human to human, according to ... results of the survey will be published in the June ...
... discovered that the protein MDC1 amplifies weak DNA injury ... low-level damage signals become strong enough to activate the ... tractable to repair. , How this "distress call" ... in the January 20 issue of Molecular Cell ( ...
Cached Biology News:Growing crops to cope with climate change 2Medical experts: US unlikely to have enough vaccines to stop avian flu 2Mayo Clinic collaboration discovers protein amplifies DNA injury signals 2Mayo Clinic collaboration discovers protein amplifies DNA injury signals 3