Navigation Links
Family tree of fish yields surprises
Date:7/17/2013

The mighty tuna is more closely related to the delicate seahorse than to a marlin or sailfish. That is one of the surprises from the first comprehensive family tree, or phylogeny, of the "spiny-rayed fish," a group that includes about a third of all living vertebrate species. The work is published July 15 in the journal Proceedings of the National Academy of Sciences.

The spiny-rayed fish are an incredibly diverse group, including tuna and billfish, tiny gobies and seahorses, and oddities such as pufferfish and anglerfish. The fish occupy every aquatic environment from coral reefs and open oceans to lakes and ponds. It includes all the major commercially fished species -- all of which are threatened. But until now, no one has had any idea exactly how more than 18,000 species in 650 families are related to each other, said Peter Wainwright, professor and chair of evolution and ecology at the University of California, Davis and senior author on the paper.

"There has been a 'bush' at the top of the family tree leading to the rest of the vertebrates," Wainwright said. "Now we have this beautiful phylogeny of one-third of all vertebrates."

The study also shows that after roaring along for their first 100 million years, the pace of evolution of the spiny-rayed fish downshifted about 50 million years ago.

Some groups of fish have gone along steadily for millennia; others have gone through bursts of rapid evolution. Overall, the researchers found that the rate at which new species formed was fairly constant across the group from their origin to about 50 million years ago, then dropped about five-fold and has remained at that level since.

That might mean that these fish have essentially filled the available spaces, Wainwright said.

"It's not uncommon in evolution to see a rapid diversification followed by a slowdown, but it's never been seen on such a scale before," he said.

Wainwright's labora
'/>"/>

Contact: Andy Fell
ahfell@ucdavis.edu
530-752-4533
University of California - Davis
Source:Eurekalert

Page: 1 2 3

Related biology news :

1. Merkin Family Foundation to fund next generation of Broad Institute scientists
2. Family history of liver cancer increases risk of developing the disease
3. Starting a family does not encourage parents to eat healthier
4. Discovery of a new family of key mitochondrial proteins for the function and viability of the brain
5. Family values
6. FirstMark Exhibiting and Presenting at the San Diego Academy of Family Physicians 55th Annual Postgraduate Symposium
7. Parkinsons disease gene identified with help of Mennonite family: UBC-VCH research
8. Helping family is key for social birds
9. Millipede family added to Australian fauna
10. CEVA, Rubidium Partner to Deliver Speech Processing Solutions based on the CEVA-TeakLite Family of DSPs
11. Bloomberg School receives $28 million for family planning advocacy
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:7/30/2014)... the way for a breakthrough that may prevent ... to poisonous chemicalsparticularly those in pesticides and chemical ... issue of the journal ChemBioChem outlines ... commonly used in pesticides and warfare agents. The ... Engineering Associate Professor of Chemical and Biological Engineering ...
(Date:7/30/2014)... truffle uses reversible epigenetic processes to regulate its genes, ... - a picture of the genome regulation taking place ... journal Genome Biology and illustrates how the ... ,jumping genes,. The authors say this may shed light ... , Black truffles (Tuber melanosporum), also known as Prigord ...
(Date:7/30/2014)... Red Queen in Lewis Carroll,s Through the Looking ... National University of Singapore improved a 35-year-old ecology ... decades to millions of years. , The new ... incorporates the "Red Queen Effect," an evolutionary hypothesis ... which suggests that organisms must constantly increase their ...
Breaking Biology News(10 mins):Engineering a protein to prevent brain damage from toxic agents 2How black truffles deal with the jumpers in their genome 2Classic Lewis Carroll character inspires new ecological model 2Classic Lewis Carroll character inspires new ecological model 3
... virus previously used as a marker in tracing human ... State. Results of this study also suggest that some ... than previously thought. , "The most genetically divergent human ... researcher at Penn State's Center for Infectious Disease Dynamics. ...
... Baptist Medical Center and colleagues at four other medical ... identify genes that may contribute to early atherosclerosis. ... and early adult life who have a genetic predisposition ... for heart disease and stroke sooner and more aggressively," ...
... In a new twist on the slogan “milk does ... staple as a contrast agent in gastrointestinal imaging exams—with ... the annual meeting of the Radiological Society of North ... bowel distension and enhancement as we see with the ...
Cached Biology News:Viral marker of human migration suspect 2Scientists work to identify genes that contribute to early heart attack risk 2Got inexpensive contrast agent? Milk plays new role in imaging 2
(Date:7/31/2014)... Sales Horizons, a leader in sales ... training course – Mastering the Complex Sale ... Drawn from proven sales training programs used by thousands ... Sale online sales training course is available to every ... contact with customers, like technical support, engineers, clinical support, ...
(Date:7/30/2014)... 2014 A study presented at the ... efficacy of CSL Behring,s C1 Inhibitor (C1-INH) concentrate ... highly sensitized patients. C1-INH is a human protein ... The study shows that post-transplant treatment ... levels of complement components 3 and 4, suggesting ...
(Date:7/30/2014)... 30, 2014 Sales Horizons, a leader ... blended sales training programs for companies engaged in complex ... used by thousands of salespeople over 25 years in ... program can be customized to address the unique sales ... blended sales training program consists of two parts: ...
(Date:7/30/2014)... Vycom announces the addition of Thermax ... meet Factory Mutual (FM) 4910 fire propagation and smoke ... benches, process tools, fume hoods, furniture and cabinetry. These ... semiconductor wafers used in electronic chip manufacturing. , ... with excellent workability and superior aesthetics. It is available ...
Breaking Biology Technology:Sales Horizons Offers Mastering the Complex Sale - a Comprehensive, Online Sales Skills Training Course 2Sales Horizons Offers Mastering the Complex Sale - a Comprehensive, Online Sales Skills Training Course 3Study Suggests C1-INH May Aid in Prevention of Antibody-Mediated Rejection Following Kidney Transplant 2Study Suggests C1-INH May Aid in Prevention of Antibody-Mediated Rejection Following Kidney Transplant 3Sales Horizons Launches New Blended Sales Training Programs to Companies Engaged in Complex B2B Sales 2Sales Horizons Launches New Blended Sales Training Programs to Companies Engaged in Complex B2B Sales 3Vycom Announces Flametec® Thermax PVC (FM4910 Listed) For a Variety of Clean Room Applications with Excellent Workability and Aesthetics 2
... of articles on developing start-up companies in the technology or ... - You've started your new company, named it, and perhaps ... need additional funding, what other choices do you have? Before ... , ,Most of us recognize that we must have ...
... fast becoming one of the most sought-after spokesmen on behalf ... chief information officers and others will have plenty of prospective ... staff openings. , ,Tim Jump, who will speak at ... in Milwaukee, is a pre-engineering teacher by trade, and ...
... CDW Corp . has signed a definitive merger agreement ... equity firm Madison Dearborn Partners , which has endorsed ... a conference call with investors, CDW chief executive officer John ... growth strategies, including a planned expansion of the Berbee platform. ...
Cached Biology Technology:Early Stage: Step 11 - Other forms of finance 2Early Stage: Step 11 - Other forms of finance 3Early Stage: Step 11 - Other forms of finance 4Jump starting technology education 2Jump starting technology education 3CDW buyer supports Berbee growth plans 2
Rabbit anti-NFkB p105/p50 (Ser337) Class: Antibody Product Group: Signalling molecules and phospho-specific Antibody...
Anti-Kusabira Orange Monoclonal Antibody Description: 100 g Research Focus: tag Storage: -20C Shipping Temperature: 4C...
CD69/CD3 50 tests...
Mouse monoclonal [CIG 3A11/5] to Cig2 (rating: *****) ( Abpromise for all tested applications)....
Biology Products: