Navigation Links
Most vertebrates -- including humans -- descended from ancestor with sixth sense
Date:10/11/2011

ITHACA, N.Y. People experience the world through five senses but sharks, paddlefishes and certain other aquatic vertebrates have a sixth sense: They can detect weak electrical fields in the water and use this information to detect prey, communicate and orient themselves.

A study in the Oct. 11 issue of Nature Communications that caps more than 25 years of work finds that the vast majority of vertebrates some 30,000 species of land animals (including humans) and a roughly equal number of ray-finned fishes descended from a common ancestor that had a well-developed electroreceptive system.

This ancestor was probably a predatory marine fish with good eyesight, jaws and teeth and a lateral line system for detecting water movements, visible as a stripe along the flank of most fishes. It lived around 500 million years ago. The vast majority of the approximately 65,000 living vertebrate species are its descendants.

"This study caps questions in developmental and evolutionary biology, popularly called 'evo-devo,' that I've been interested in for 35 years," said Willy Bemis, Cornell professor of ecology and evolutionary biology and a senior author of the paper. Melinda Modrell, a neuroscientist at the University of Cambridge who did the molecular analysis, is the paper's lead author.

Hundreds of millions of years ago, there was a major split in the evolutionary tree of vertebrates. One lineage led to the ray-finned fishes, or actinopterygians, and the other to lobe-finned fishes, or sarcopterygians; the latter gave rise to land vertebrates, Bemis explained. Some land vertebrates, including such salamanders as the Mexican axolotl, have electroreception and, until now, offered the best-studied model for early development of this sensory system. As part of changes related to terrestrial life, the lineage leading to reptiles, birds and mammals lost electrosense as well as the lateral line.

Some ray-finned fishes including paddlefishes and sturge
'/>"/>

Contact: Joe Schwartz
Joe.Schwartz@cornell.edu
607-254-6235
Cornell University
Source:Eurekalert

Page: 1 2

Related biology news :

1. Storing vertebrates in the cloud
2. Wired for sound: A small fishs brain illustrates how people and other vertebrates produce sounds
3. Port Valdez invertebrates stabilized 26 years after quake
4. Genetic clues to evolution of jaws in vertebrates unearthed by CU-led team
5. Prehistoric fish extinction paved the way for modern vertebrates
6. Singapore scientists join international study of 10,000 vertebrates genomes
7. The evolutionary foundation of genomic imprinting in lower vertebrates
8. President Obama calls for increased investment in science, including biomedical research
9. Researchers report advances vs. preeclampsia, including potential prediction
10. Gold Standard/Elsevier offers timely, reliable drug pricing data, including average wholesale price
11. Tigers in serious trouble around the world, including here in the US
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:4/17/2014)... RSV infection , Respiratory syncytial virus (RSV) ... infections, generating life-threating illness in very young and ... limited. RSV enters host cells through the fusion ... bundle. Small interfering peptides that prevent bundle formation ... are highly susceptible to degradation. In this issue ...
(Date:4/17/2014)... Professor Marc Andr Gauthier and Professor Luca Razzari ... each been awarded large grants from the John ... for Innovation (CFI) for the acquisition of state-of-the-art ... be added matching grants from the Ministre de ... et de la Technologie (MESRST). These new laboratories ...
(Date:4/17/2014)... cells in bone marrow need to produce hydrogen sulfide ... according to a new study from the Center for ... Dentistry of USC. , Professor Songtao Shi, principal investigator ... produced by the cells governs the flow of calcium ... signals that results in osteogenesis, or the creation of ...
Breaking Biology News(10 mins):JCI online ahead of print table of contents for April 17, 2014 2JCI online ahead of print table of contents for April 17, 2014 3JCI online ahead of print table of contents for April 17, 2014 4JCI online ahead of print table of contents for April 17, 2014 5JCI online ahead of print table of contents for April 17, 2014 6New state-of-the-art biotech and nanotech equipment for INRS 2
... is available in German . , Scientists of ... investigated another navigational skill of desert ants. These ants are ... sun compass along with a step counter and visible landmarks ... research team from Jena recently discovered that these ants also ...
... of Biological Sciences (AIBS) has selected Meredith Niles, a ... Richards, a graduate student at the University of Maryland, ... the University of Rhode Island, to receive the 2010 ... "AIBS is committed to fostering a productive dialogue between ...
... Americans recognize things need to change in the grocery ... is included in their food and on the packages. ... the right food choices to avoid obesity, but will readily ... new survey by FoodMinds. "In light of all the ...
Cached Biology News:Smelling the scenery in stereo 2AIBS names emerging public policy leaders 2AIBS names emerging public policy leaders 3Americans want Uncle Sam's help putting healthy foods on their dinner table 2
(Date:1/15/2014)... Niagara Thermal Products is proud to announce that ... ("B3") as the critical thermal component supplier in support ... Corps of Engineers.  B3 has developed the only comprehensive ... destroys VOCs and other chemical pollutants, allergens and organic ...
(Date:1/15/2014)... RedBrick Health , a fast-growing leader in consumer health ... EmblemHealth , the New York -based ... RedBrick Compass health assessment, combined with the RedBrick Journeys ... EmblemHealth is among the first health plans in the ...
(Date:1/15/2014)... 15, 2014 Two champions of science, ... sponsorship of an annual competition for middle and high ... to, innovative STEM study. The competition presents students with ... of Engineering Aptitude, Mathematics, and Sciences is a ...
(Date:1/15/2014)... Freeslate, Inc ., the leading provider of ... one of India’s top five pharmaceutical companies, has received ... for high throughput solid form screening. , Lupin, ... range of quality, affordable generic and branded formulations and ...
Breaking Biology Technology:Niagara Thermal Products LLC Selected as Critical Supplier for Buffalo BioBlower Air Purification Systems 2EmblemHealth Selects RedBrick Health to Power its Next-Generation Health Engagement and Behavior Change System 2EmblemHealth Selects RedBrick Health to Power its Next-Generation Health Engagement and Behavior Change System 3Technology Student Association Partners with Leaders in STEM Education Advocacy for Annual Competition 2Technology Student Association Partners with Leaders in STEM Education Advocacy for Annual Competition 3Technology Student Association Partners with Leaders in STEM Education Advocacy for Annual Competition 4Technology Student Association Partners with Leaders in STEM Education Advocacy for Annual Competition 5Lupin 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 3
... Anne T. Ferguson, Ph.D., ... , INTRODUCTION , This application ... from Molecular Devices to study the performance of the LIVE/DEAD ... fluorescent dyes, calcein AM (cal AM) and ethidium homodimer (EthD-1), to ...
... , A Sensitive, Robust, Homogenous,and Rapid Assay , ... method , Assays a broad range of tyrosine kinases ... in a kit and in bulk packaging , , ... activity can be accelerated using High Efficiency Fluorescence Polarization ...
... David Handfield, Martin Boissonneault, Esther Tremblay, Benoit Houle and Luc Mnard. ... , Recent advances in ... in both the number of compounds and potential drug targets that ... assay systems has helped to meet the demand for increased throughput. ...
Cached Biology Technology:LIVE/DEAD Viability/Cytotoxicity Assay for Animal Cells Using the SpectraMax Gemini XS Fluorescence Microplate Reader (MaxLine Application Note #43) 2LIVE/DEAD Viability/Cytotoxicity Assay for Animal Cells Using the SpectraMax Gemini XS Fluorescence Microplate Reader (MaxLine Application Note #43) 3LIVE/DEAD Viability/Cytotoxicity Assay for Animal Cells Using the SpectraMax Gemini XS Fluorescence Microplate Reader (MaxLine Application Note #43) 4LIVE/DEAD Viability/Cytotoxicity Assay for Animal Cells Using the SpectraMax Gemini XS Fluorescence Microplate Reader (MaxLine Application Note #43) 5TKXtra DataFile: Homogenous tyrosine kinase detection using High Efficiency Fluorescence Polarization 2TKXtra DataFile: Homogenous tyrosine kinase detection using High Efficiency Fluorescence Polarization 3Development of Radioligand Binding Assays for the Motilin Receptor Using ScreenReady Targets. 2Development of Radioligand Binding Assays for the Motilin Receptor Using ScreenReady Targets. 3Development of Radioligand Binding Assays for the Motilin Receptor Using ScreenReady Targets. 4Development of Radioligand Binding Assays for the Motilin Receptor Using ScreenReady Targets. 5
... Ascent FL is equipped ... luminometric measurement technologies that ... of advanced features of ... Ascent. Fluoroskan Ascent FL ...
...
...
... cabinets Heraeus HERAsafe KS convince with an optimum ... new frameless slanted window does not obscure the ... window design makes it easy to work in ... a height of more than 250 mm ensures ...
Biology Products: