Navigation Links
Fly's courtship sheds light on the formation of innate behaviors

By studying how genes influence the development and use of neural circuits that control a specific set of mating behaviors in the fruit fly, researchers have provided new insight into how instinctual behaviors ?those that are not based on prior experience ?arise in the developing nervous system. The work is reported by Jean-Christophe Billeter and other members of Stephen Goodwin's group at the University of Glasgow, along with research groups at Brandeis and California State University, and appears in the June 6th issue of Current Biology.

Instinctual behaviors, such as suckling in newborns, or the flight-fight response, are generally seen as subconscious drives underlying the actions of humans and other animals. Yet the manner by which these innate behaviours are hard-wired into our brains remains obscure.

In their new work, the researchers set out to address this question using mutations that perturb the stereotypical male courtship behavior of the fruit fly Drosophila melanogaster. The male fly, in its attempt to mate, will perform a series of complex behaviours ?including following females, singing, licking, and tapping ?that are not based on the fly's past experience. One gene, fruitless, has been shown to be pivotal to the emergence of these stereotypical behaviours. Fruitless is known to generate a variety of similar but functionally different proteins, some of which are exclusively expressed in male flies.

Using a mutant that specifically disrupts one form of the Fruitless protein, the researchers showed that the male fly's sexual behavior is not a closed neural circuit, but rather a series of independent but interlinked steps that are regulated to have an additive effect on the success of the courtship behavior as a whole.

Studying various mutants, the researchers were able to uncouple the later steps of copulation from the earlier courtship steps, assigning specific populations of neurons to the behaviors involved, and the reby going a long way in describing how the neural code for these behaviors is formulated in the developing fly's brain. This work, in conjunction with other studies performed by these and other research groups in recent years, shows how fundamentally important one gene can be to effecting a behavior, and how that behavior can be altered (and potentially evolve) as the gene itself is affected by external cues, by interactions with other genes, and by the organism's neuronal environments.


'"/>

Source:Cell Press


Related biology news :

1. Past experience of pheromones induces dominant courtship behavior in fruit flies
2. Bacteria collection sheds light on urinary tract infections
3. Sea skate experiment sheds light on human cell transport
4. Bacterial genome sheds light on synthesizing cancer-fighting compounds
5. Newly discovered genetic disease sheds light on bodys water balance
6. Multi-species genome comparison sheds new light on evolutionary processes, cancer mutations
7. Gene discovery sheds light on causes of rare disease, cancer
8. Skull study sheds light on dinosaur diversity
9. OHSU discovery sheds light into how stem cells become brain cells
10. Clock molecules sensitivity to lithium sheds light on bipolar disorder
11. Lizard third eye sheds light on evolution of color vision
Post Your Comments:
*Name:
*Comment:
*Email:


(Date:6/21/2016)... 21, 2016 NuData Security announced today that ... of principal product architect and that Jon ... customer development. Both will report directly to ... moves reflect NuData,s strategic growth in its product ... customer demand and customer focus values. ...
(Date:6/9/2016)... control systems is proud to announce the introduction of fingerprint attendance control software, allowing ... are actually signing in, and to even control the opening of doors. ... ... ... Photo - http://photos.prnewswire.com/prnh/20160609/377487 ...
(Date:6/2/2016)... The Department of Transport Management (DOTM) of ... project, for the , Supply and Delivery of ... Infrastructure , to Decatur , ... Management Solutions. Numerous renowned international vendors participated in the tendering ... selected for the most compliant and innovative solution. The contract ...
Breaking Biology News(10 mins):
(Date:6/27/2016)... -- Global demand for enzymes is forecast to grow ... billion.  This market includes enzymes used in industrial ... animal feed, and other markets) and specialty applications ... beverages will remain the largest market for enzymes, ... containing enzymes in developing regions.  These and other ...
(Date:6/27/2016)... Raleigh, NC (PRWEB) , ... June 27, 2016 ... ... a mission to bring innovative medical technologies, services and solutions to the healthcare ... development and implementation of various distribution, manufacturing, sales and marketing strategies that are ...
(Date:6/24/2016)... 24, 2016 Epic Sciences unveiled a ... susceptible to PARP inhibitors by targeting homologous recombination ... The new test has already been incorporated into ... cancer types. Over 230 clinical trials ... pathways, including PARP, ATM, ATR, DNA-PK and WEE-1. ...
(Date:6/23/2016)... 23, 2016   Boston Biomedical , an ... designed to target cancer stemness pathways, announced that ... Orphan Drug Designation from the U.S. Food and ... cancer, including gastroesophageal junction (GEJ) cancer. Napabucasin is ... inhibit cancer stemness pathways by targeting STAT3, and ...
Breaking Biology Technology: