Navigation Links
Jump in communication skills led to species explosion in electric fishes
Date:4/28/2011

s. Further analysis by collaborator Luke Harmon, PhD, assistant professor of biology at the University of Idaho, revealed that the number of species in clade A has been increasing three to five times faster than the number of species in other mormyrid lineages.

In other words, the fancier the fishs' communication kit, the more likely it was to come up with new electric discharges and new species that identified one another by those discharges.

Putting it to the test

It all worked out statistically and logically but was it what the fish actually experienced?

"After all," says Carlson, "this sensory world is totally foreign to us. I've worked with these fish a long time, so I can tell a few of the discharges apart by ear. But for the most part I need an oscilloscope to see the differences.

Can the Clade A fish tell the difference between discharges? To test them, Carlson ran behavioral playback experiments on fish caught in Gabon.

"A fish would be going pop, pop, pop and we'd pulse it. Depending on the fish, it would either discharge more rapidly, brrrrrrrrr, or stop discharging altogether.

"But if we repeated the stimulus again and again the fish would stop responding. Once it stopped responding, we hit it with a phase-shifted version of the same pulse. If the fish could tell the difference, the discharge rate or pause duration would increase. If it couldn't tell the difference, there would be no change.

The experiments showed that mormyrid fish in Clade A were able to distinguish among pulses, but other mormyrids (those with the EL brain) were not.

Did the evolution of a fancy signal-processing brain drive speciation in the Mormyridae? "It's always difficult with evolutionary studies to say that any one trait is the cause or the trigger for another," Carlson says. "But in this case we were able to show that the complex signal-processing brain evolved before a burst of speciation, that
'/>"/>

Contact: Diana Lutz
dlutz@wustl.edu
314-935-5272
Washington University in St. Louis
Source:Eurekalert  

Page: 1 2 3 4 5 6 7

Related biology news :

1. Scientists exploit ash tree pests chemical communication
2. Skywalker ensures optimal communication between neurons
3. Science reporter wins ASM Public Communications Award
4. Communication engages complex brain circuitry and processes
5. Brain cell communication: Why its so fast
6. Metcalf Institute wins NSF grant to help journalism and communication of oil spill research
7. Teaching communication and information literacy skills
8. Wall Street Communications Retained by iPharro Media
9. Wall Street Communications Retained by iPharro Media
10. Researchers demystifying complex cellular communications hubs found in sensory neurons
11. Dolphins use diplomacy in their communication
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Jump in communication skills led to species explosion in electric fishes 
(Date:8/27/2014)... German . , ... disease affecting the peripheral nervous system. Researchers from the ... Experimental Medicine and University Medical Centre Gttingen have discovered ... rats with the disease. These cells enwrap the nerve ... facilitates the rapid transfer of electrical impulses. If Schwann ...
(Date:8/27/2014)... willing to pay a premium for fruits, vegetables and ... the label claims is another matter. Now scientists studying ... to make sure farms are labelling their produce appropriately. ... Agricultural and Food Chemistry , could help prevent organic ... Food Safety Authority and the Wuerzburg University note that ...
(Date:8/27/2014)... NY (June, 2014) Outstanding basic research, a ... a dedication to patient care have earned the ... University Medical Center (CUMC) and NewYork-Presbyterian Hospital an ... the National Cancer Institute (NCI). The grant renews ... NCI-designated Comprehensive Cancer Centers in New York City ...
Breaking Biology News(10 mins):Potential therapy for incurable Charcot-Marie-Tooth disease 2Herbert Irving Comprehensive Cancer Center awarded $18 million grant 2Herbert Irving Comprehensive Cancer Center awarded $18 million grant 3Herbert Irving Comprehensive Cancer Center awarded $18 million grant 4
... 25-year non-stop research expeditioninto the deep ocean. Over the ... are completing the installation off the British Columbia coast of ... observatory. Using three ships and at least one ROV, ... 400 instruments and sensors to the seafloor where they are ...
... Van Andel Research Institute (VARI) investigators ... therapeutic target in the treatment of the most aggressive ... have few treatment options. "Breast cancer mortality rates ... to traditional treatments tend to be more aggressive and ...
... For the first time, an international group of researchers ... of DNA on chromosome 6. This is the ... The LSUHSC research team was led by Nancy Buccola, APRN, ... Sciences Center New Orleans, who also coordinated the ten clinical ...
Cached Biology News:World's largest ocean observatory takes shape 2World's largest ocean observatory takes shape 3Possible drug target found for one of the most aggressive breast cancers 2LSUHSC research helps link schizophrenia to specific DNA region 2
(Date:8/27/2014)... , Aug. 27, 2014  A novel ... to help physicians better identify early-stage disease, when ... disability, according to a new study in The ... Diagnostics (NYSE: DGX ) and other ... 14-3-3eta protein outperformed conventional antibody-serum testing, including rheumatoid ...
(Date:8/27/2014)... 2014 Reportbuyer.com has added a new ... - A Rational View https://www.reportbuyer.com/product/1595336/The-Graphene-Opportunity---A-Rational-View.html ... A similar amount of hype currently surrounds ... microelectronics to water treatment, but is graphene the ... the Graphene Opportunity Report, authored by Tim ...
(Date:8/27/2014)... 27, 2014 Research and Markets  has ... Ratio Mass Spectrometer Industry Report 2014" report to ... Ratio Mass Spectrometer Industry Report 2014 is a professional ... global isotope ratio mass spectrometer industry. The ... definitions, classifications, applications and industry chain structure. The isotope ...
(Date:8/27/2014)... (PRWEB) August 27, 2014 Riviera ... is announcing the creation of the Sancilio Scientific ... take the SCI’s philosophy of looking to nature ... and development actions are based on sound scientific ... Scientific Advisory Board provides a vehicle for SCI ...
Breaking Biology Technology:Novel Biomarker Detects Early Rheumatoid Arthritis Better than Conventional Methods Alone, According to Journal of Rheumatology Study 2Novel Biomarker Detects Early Rheumatoid Arthritis Better than Conventional Methods Alone, According to Journal of Rheumatology Study 3Novel Biomarker Detects Early Rheumatoid Arthritis Better than Conventional Methods Alone, According to Journal of Rheumatology Study 4The Graphene Opportunity - A Rational View 2The Graphene Opportunity - A Rational View 3The Graphene Opportunity - A Rational View 4Global Stable Isotope Ratio Mass Spectrometer Industry Report 2014 2New Sancilio & Company, Inc. Scientific Board 2New Sancilio & Company, Inc. Scientific Board 3
... a network of tiny sensors as small as dewdrops ... intruder. Scattered outdoors on rocks, fence posts and doorways, ... are a completely new and cost-effective system for safeguarding and ... his Tel Aviv University Faculty of Engineering team drew upon ...
... in key leadership expertise to strengthen its European business ... SIRO ClinPharm Pvt. Ltd., a leading multinational full ... of Scott L. Spector as President Strategic Operations Europe. ... office of Omega Mediation . Mr. Spector brings ...
... faced H1N1 Flu OutbreaksJAMAICA, N.Y., May 26 ... of SANYO North America, announces the donation of ... level of safe, healthy air for areas where ... The first recipients to receive the donated SANYO ...
Cached Biology Technology:Intruder alert: Tel Aviv University's 'Smart Dew' will find you! 2SIRO Group Appoints Scott L. Spector as President, Strategic Operations, for its European Business 2SANYO Donates Air Purification Systems Effective Against Flu Viruses to New York Airports and Schools 2SANYO Donates Air Purification Systems Effective Against Flu Viruses to New York Airports and Schools 3SANYO Donates Air Purification Systems Effective Against Flu Viruses to New York Airports and Schools 4
... Best: DASGIPs Process Control integrates Process ... comprehensive documentation for cultivation processes. A ... pH, dissolved oxygen, temperature and agitation ... Profiles, e.g. constant or scheduled media ...
... LC Sciences provides a genome-wide microRNA ... and proprietary probe design, which enable highly ... (1-3). We have standard arrays for mature ... latest version of the Sanger miRBase database ...
... synthetic peptide whose sequences are derived from mouse resistin protein. ... - S - M - P - L - C - ... - D - K - K - I - K - ... used for neutralization and control experiments with the polyclonal antibody that ...
... Imaging System, Basic Package Superior Protein ... Range: The ProXPRESS 2D Proteomic Imaging System ... for both proteomic and general life science ... enabling the use of all dyes in ...
Biology Products: