HOME >> BIOLOGY >> NEWS
Electric fish conduct electric duets in aquatic courtship

Cornell researchers have discovered that in the battle of the sexes, African electric fish couples not only use specific electrical signals to court but also engage in a sort of dueling "electric duet."

The study is the first to compare electrical and behavioral displays in breeding and nonbreeding Brienomyrus brachyistius, a type of mormyrid electric fish, which emit weak electric fields from a batterylike organ in their tails to sense their surroundings and communicate their species, sex and social status with other fish. It is also the first study to successfully sort signals in electric fish based on sex.

The research, which is the cover story in the July 1 issue of the Journal of Experimental Biology, is authored by Carl D. Hopkins, Cornell professor of neurobiology and behavior, and Ryan Wong '05, who conducted the study as an undergraduate for his senior honors thesis and is now a Ph.D. student at the University of Texas in Austin.

"Our study provides strong evidence that the 'rasp' [a certain electric signal] is a male advertisement call during courtship in this species," said Wong, noting that the males also serenade females with lower frequency "creaks."

The researchers developed custom software that offers new techniques for separating and documenting electrical pulses based on sex. They video recorded four pair of mating mormyrids (a feat in itself, since the species rarely breeds successfully in captivity) and identified nine common motor displays and 11 specific pulse sequences common to courtship and mating.

"Knowing the electrical and motor patterns during courtship allows for further exploration of such topics as mate choice and neural basis of pattern generation in these fish," explained Hopkins, noting that the next step in the research will be to decode the fish transmissions and unravel their meaning.


'"/>

Contact: Press Relations Office
pressoffice@cornell.edu
607-255-6074
Cornell University News Service
20-Jun-2007


Page: 1

Related biology news :

1. Electric fish shed light on ways the brain directs movement
2. Electrical activity alters language used by nerve cells
3. Electric fish in Africa could be example of evolution in action
4. Electrical stimulation boosts stroke recovery
5. Electrical engineer works on personalizing medical treatment
6. Semiconductor membrane mimics biological behavior of ion channels
7. Interim analysis of anti-cancer vaccine, BiovaxID, to be conducted
8. Innovative smallpox vaccine research study to be conducted at Case Medical Center
9. Plastic with changeable conductivity developed by chemical engineer
10. The Parkinsons Institute to conduct Phase III Clinical Trial of creatine for Parkinsons disease
11. Parents genes, not parents arguing, may cause childrens conduct problems

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


(Date:3/15/2016)... 15, 2016 --> ... Transparency Market Research "Digital Door Lock Systems Market - Global ... 2023," the global digital door lock systems market in terms ... and is forecast to grow at a CAGR of 31.8% ... and medium enterprises (MSMEs) across the world and high industrial ...
(Date:3/14/2016)... , March 14, 2016 NXTD ... growing mobile commerce market, announces the airing of a new ... starting the week of March 21 st .  The commercials ... including its popular Squawk on the Street show. --> ... on the growing mobile commerce market, announces the airing of ...
(Date:3/11/2016)... http://www.apimages.com ) - --> http://www.apimages.com ) - ... Images ( http://www.apimages.com ) - Germany . ... new refugee identity cards. DERMALOG will be unveiling this device, and ... Hanover next week.   --> Germany ... the new refugee identity cards. DERMALOG will be unveiling this device, ...
Breaking Biology News(10 mins):
(Date:4/28/2016)... , ... April 28, 2016 , ... ... will hold an open house for regional manufacturers at its Maple Grove, Minnesota ... Tsugami, Okuma, Hardinge Group, Chiron and Trumpf. Almost 20 leading suppliers of ...
(Date:4/27/2016)... ... ... The Pittcon Organizing Committee is pleased to announce that Charles “Chuck” Gardner was ... since 1987. Since then, he has served in a number of key leadership positions ... the program and exposition committees. In his professional career, Dr. Gardner is the director ...
(Date:4/27/2016)... and RESEARCH TRIANGLE PARK, N.C. ... UTHR ) announced today that Martine ... United Therapeutics will provide an overview and update on ... Annual Health Care Conference. The presentation ... 10:00 a.m. Eastern Time, and can be accessed via ...
(Date:4/27/2016)... MD (PRWEB) , ... April 27, 2016 , ... ... Greg Lamka, PhD to its Scientific Advisory Board. Dr. Lamka will assist PathSensors ... plant pathogen detection. , PathSensors deploys the CANARY® test platform for the ...
Breaking Biology Technology:
Cached News: