Navigation Links
Past experience of pheromones induces dominant courtship behavior in fruit flies

By investigating the interplay between pheromone signaling and behavior in fruit flies, researchers have begun to understand how an adult fly's earlier experience as a young individual can influence its behavior towards other flies as an adult. In particular, the researchers found that pheromone signals in the context of experience with adult flies can influence how young flies will behave once they reach maturity.

The work is reported by Jean-Francois Ferveur and colleagues at the Universite de Bourgogne, France, and the University of Manchester, United Kingdom.

When an adult male fruit fly encounters a young male fly, he will actively court the younger individual, sometimes becoming aggressive. These young males that have encountered older flies will go on to similarly dominate other adult males that had encountered only young flies--something in the early experience of the "dominant" flies makes them more aggressive. In the new work, researchers investigated exactly what it is about past experience of these flies that influences adult behavior. Clues caused the researchers to suspect that a key role was played by a chemical signal--a pheromone--carried by adult males during the early encounter.

To prove this, the researches used mutant flies that lack the normal adult pheromones, and they covered these pheromone-defective flies with a variety of other smells. The researchers were able to demonstrate that a male shows courtship dominance behavior over young males if he has been exposed to the smell of normal adult males during a critical period in his life--the first 24 hours. In fact, an encounter with a single adult male was sufficient to make males exhibit dominance behavior when they reached adulthood. The researchers found that, intriguingly, it was not enough for young males to smell these pheromones--the pheromones had to be carried by active adult males. The effect was so strong that males carried on exhibiting courtship dominance be havior until they were five days old.

The authors of the study note that similar findings have been reported in mice and hamsters, suggesting that dominance behavior may often be affected by chemical signals. In future studies, the researchers hope to take the next step in understanding how dominance behavior develops and thereby to identify which parts of the fly's brain are involved in processing dominance-inducing signals.


'"/>

Source:Cell Press


Related biology news :

1. Penguin chicks exposed to human visitors experience spike in stress hormone
2. Virtual animal shelters ?How the Internet is transforming the experience of pet adoptions
3. When mice choose mates, experience counts
4. Brain differences could explain why males and females experience pain relief differently
5. Just the expectation of a mirthful laughter experience boosts endorphins 27 percent, HGH 87 percent
6. Long-term changes in experience cause neurons to sprout new long-lasting connections
7. Hopkins scientists show hallucinogen in mushrooms creates universal mystical experience
8. Out-of-body experiences may be caused by arousal system disturbances in brain
9. Researchers find how protein allows insects to detect and respond to pheromones
10. Olfactory system detects pheromones that control reproduction
11. Human trial proves ricin vaccine safe, induces neutralizing antibodies; further tests planned
Post Your Comments:
*Name:
*Comment:
*Email:


(Date:4/28/2016)... April 28, 2016 First quarter 2016:   ... 966% compared with the first quarter of 2015 The ... 589.1 M (loss: 18.8) and the operating margin was 40% (-13) ... Cash flow from operations was SEK 249.9 M (21.2) ... guidance is unchanged, SEK 7,000-8,500 M. The operating margin ...
(Date:4/26/2016)... 2016 Research and Markets has ... Market 2016-2020"  report to their offering.  , ,     ... The analysts forecast the global multimodal biometrics market ... the period 2016-2020.  Multimodal biometrics is ... as the healthcare, BFSI, transportation, automotive, and government ...
(Date:4/15/2016)... 15, 2016  A new partnership announced today ... underwriting decisions in a fraction of the time ... and high-value life insurance policies to consumers without ... With Force Diagnostics, rapid testing (A1C, Cotinine and ... (blood pressure, weight, pulse, BMI, and activity data) ...
Breaking Biology News(10 mins):
(Date:6/23/2016)... HOUSTON , June 23, 2016 ... agreement with the Cy-Fair Sports Association to serve ... of the agreement, Houston Methodist Willowbrook will provide ... education and connectivity with association coaches, volunteers, athletes ... partner with the Cy-Fair Sports Association and to ...
(Date:6/23/2016)... ... , ... Supplyframe, the Industry Network for electronics hardware design ... Located in Pasadena, Calif., the Design Lab’s mission is to bring together inventors ... and brought to market. , The Design Lab is Supplyframe’s physical representation of ...
(Date:6/23/2016)... , June 23, 2016 ... Hematology Review, 2016;12(1):22-8 http://doi.org/10.17925/OHR.2016.12.01.22 ... , the peer-reviewed journal from touchONCOLOGY, Andrew ... escalating cost of cancer care is placing an ... result of expensive biologic therapies. With the patents ...
(Date:6/23/2016)... FRANCISCO , June 22, 2016  Amgen (NASDAQ: ... sponsorship of the QB3@953 life sciences incubator ... human health. The shared laboratory space at QB3@953 was ... overcome a key obstacle for many early stage organizations ... part of the sponsorship, Amgen launched two "Amgen Golden ...
Breaking Biology Technology: