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:9/2/2014)... suggests that professional baseball pitchers with poor core stability are ... single season because of injury than are pitchers who have ... , In the study, 347 pitchers were assessed for lumbopelvic ... pelvis as they raised a leg to step up were ... 30 days cumulative, not consecutive during the season ...
(Date:9/2/2014)... If you think losing weight is enough to prevent Type ... report in September 2014 issue of The FASEB ... overweight to develop Type 2 diabetes. This study compared genetically ... a fast-food meal, the circulating metabolites, including those related to ... same levels. These findings suggest that the onset of ...
(Date:9/2/2014)... (September 2, 2014) In the battle between our ... unknown ally in bacteria-killing viruses known as phages. In ... Hospital, Partners In Health, Haiti,s National Public Health Laboratory, ... to give up their virulence in order to survive. ... found that cholera,s mutational escape from phage predation ...
Breaking Biology News(10 mins):In pro baseball pitchers, weak core linked to more missed days 2In pro baseball pitchers, weak core linked to more missed days 3What you eat and not just the number of calories, is a significant factor in diabetes risk 2War between bacteria and phages benefits humans 2War between bacteria and phages benefits humans 3
... Long touted as an energy-saving alternative for home ... to be even more efficient, as well as dimmable, ... by householders as a longer-lasting, energy efficient alternative to ... the power and last 1,000 times longer than incandescent ...
... and her colleagues have identified a specific DNA change ... in some people. It provides a potential mechanism that ... consistent with the growing trend of personalized medicine. ... issue of the American Journal of Psychiatry ...
... used as live bait for freshwater fishing. With ... channel catfish and other freshwater fishes. They may ... in bait shops in Arizona, Colorado and New Mexico ... a chytrid fungus called Batrachochytrium dendrobatidis (Bd). "These ...
Cached Biology News:Queen's researchers shine light on compact fluorescent bulb problems 2Altered gene can increase risk of schizophrenia 2Altered gene can increase risk of schizophrenia 3Spring fishing season arrives... and with it, amphibian diseases 2Spring fishing season arrives... and with it, amphibian diseases 3
(Date:9/2/2014)... NEW YORK , September 2, 2014 ... Market Study on Membrane Technology in Pharmaceutical, Biopharma and ... Witness Highest Growth by 2019" the global membrane technology market for ... 7,029.9 million in 2014 and is expected to grow ... to reach an estimated value of USD 10,886.0 million ...
(Date:9/2/2014)... , Sept. 2, 2014 Orexigen Therapeutics, ... the U.S. Patent and Trademark Office (PTO) has issued ... being evaluated for weight loss. NB32 is a fixed-dose ... U.S. Patent No. 8,815,889 claims methods for ... bupropion. The patent expires in 2024. If NB32 is ...
(Date:9/2/2014)... NC (PRWEB) September 02, 2014 ... of its 11th clinical research site: PMG Research of ... ownership and operation of the clinical research department at ... expanding PMG’s presence in eastern North Carolina. This new ... For the patients in Rocky Mount and the surrounding ...
(Date:9/1/2014)... The global oligonucleotide synthesis market is expected to ... in 2014, growing at a CAGR of 9.8% ... market is categorized on the basis of products ... synthesized oligonucleotides segment is expected to register the ... during the forecast period, owing to an increasing ...
Breaking Biology Technology:Global Membrane Technology Market Will Reach $10,886.0 Million in 2019: Persistence Market Research 2Global Membrane Technology Market Will Reach $10,886.0 Million in 2019: Persistence Market Research 3Global Membrane Technology Market Will Reach $10,886.0 Million in 2019: Persistence Market Research 4Global Membrane Technology Market Will Reach $10,886.0 Million in 2019: Persistence Market Research 5Orexigen Expands NB32 Intellectual Property Portfolio With New U.S. Patent 2Orexigen Expands NB32 Intellectual Property Portfolio With New U.S. Patent 3Orexigen Expands NB32 Intellectual Property Portfolio With New U.S. Patent 4PMG Research Announces the Formation of its Eleventh Site 2PMG Research Announces the Formation of its Eleventh Site 39.8% CAGR for Oligonucleotide Synthesis Market Globally to 2019 Says a New Research Report Available at RnRMarketResearch.com 29.8% CAGR for Oligonucleotide Synthesis Market Globally to 2019 Says a New Research Report Available at RnRMarketResearch.com 39.8% CAGR for Oligonucleotide Synthesis Market Globally to 2019 Says a New Research Report Available at RnRMarketResearch.com 49.8% CAGR for Oligonucleotide Synthesis Market Globally to 2019 Says a New Research Report Available at RnRMarketResearch.com 5
... Inc. (NYSE Amex: CUR ) announced it ... develop its human neural stem cell technology for the ... "Research to Treat Cancerous Brain Tumors with Neural Stem ... Investigator John Zhang, MD, PhD, Professor of Neurosurgery, Loma ...
... that attacks the small intestines of humans and animals ... can fight disease and aid in military operations. ... engineering, at the University of Tennessee, Knoxville, and his ... attachment of the microorganism Giardia. Giardia causes one of ...
... Informex , the leading meeting place for buyers ... introduction of a new conference, ,Business Strategies for ... to be hosted October 5-6th, 2011 in Boston, ... topics regarding the future of pharma, sourcing strategies ...
Cached Biology Technology:Neuralstem Awarded Department of Defense Contract for Brain Cancer Research 2Neuralstem Awarded Department of Defense Contract for Brain Cancer Research 3UT professor's pathogen research inspires robotics design for medicine and military 2New Conference Offers Solutions for Success in the Growing Biologics Market 2New Conference Offers Solutions for Success in the Growing Biologics Market 3
... cytopathic effect inhibition assays, also known as CPE ... culture supernatents; serum from PK studies and delivery ... defined as the quantity of interferon required per ... infection by 50%. All standards used ...
... CGH Genomic Labeling Systems are a high-performance ... genomic DNA samples for array-based Comparative Genomic ... direct labeling formats, the BioPrime Plus Array ... solution to your genomic labeling needs. ...
... are cytopathic effect inhibition assays, also known as ... tissue culture supernatents; serum from PK studies and ... is defined as the quantity of interferon required ... viral infection by 50%. All standards ...
... PBL's bioassays for interferons are cytopathic effect ... assays. Sample types include; tissue culture supernatents; ... In these assays, one unit is defined as ... reduce the cytopathic effect of viral infection by ...
Biology Products: