Navigation Links
Living fossils? Actually, sturgeon are evolutionary speedsters
Date:6/6/2013

ANN ARBOREfforts to restore sturgeon in the Great Lakes region have received a lot of attention in recent years, and many of the news stories note that the prehistoric-looking fish are "living fossils" virtually unchanged for millions of years.

But a new study by University of Michigan researchers and their colleagues reveals that in at least one measure of evolutionary changechanges in body size over timesturgeon have been one of the fastest-evolving fish on the planet.

"Sturgeon are thought of as a living fossil group that has undergone relatively slow rates of anatomical change over time. But that's simply not true," said Daniel Rabosky, assistant professor in the U-M Department of Ecology and Evolutionary Biology and a curator of herpetology at the Museum of Zoology.

"Our study shows that sturgeon are evolving very quickly in some ways. They have evolved a huge range of body sizes. There are dwarf sturgeon the size of a bass and several other species that are nearly as big as a Volkswagen."

The sturgeon finding is just one result in a wide-ranging study of the rates of species formation and anatomical change in fish. The work involved assembling one of the largest evolutionary trees ever created for any group of animals. The evolutionary relationships between nearly 8,000 species of fish are delineated in the branches of the tree, allowing the researchers to make inferences about all 30,000 or so species of ray-finned fish.

The study's findings are scheduled for online publication in Nature Communications on June 6. Rabosky and Michael Alfaro of the University of California, Los Angeles, are the lead authors. U-M computational evolutionary biologist Stephen Smith is a co-author.

The main goal of the project was to test a longstanding idea in evolutionary biology that has anecdotal support but which had never been rigorously evaluated, Rabosky said. It was Charles Darwin who coined the term "livin
'/>"/>

Contact: Jim Erickson
ericksn@umich.edu
734-647-1842
University of Michigan
Source:Eurekalert

Page: 1 2 3

Related biology news :

1. Children living near toxic waste sites experience higher blood lead levels resulting in lower IQ
2. Odor and environmental concerns of communities living near waste disposal facilities
3. Amphibians living close to farm fields are more resistant to common insecticides
4. 100+ million mapped (and growing) records of nearly every living US species
5. Genome sequencing of the living coelacanth sheds light on the evolution of land vertebrate
6. Living in a sunny climate does not improve vitamin D levels in hip fracture patients
7. Not just cars, but living organisms need antifreeze to survive
8. ArcticNet recommends practical solutions to improve standard of living in Canadas north
9. Malnutrition -- Living hungrily ever after
10. NIH grant funds Boston College research into illnesses afflicting people living with HIV
11. Peering into living cells -- without dye nor fluophore
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:8/19/2014)... Some infants born with neonatal abstinence syndrome ... more difficult time going through withdrawal than others, ... While genetic and epigenetic (when genes are turned ... as potential factors, researchers at Boston University School ... conducted a first of its kind study to ...
(Date:8/19/2014)... today,s crocodiles colonised the seas during warm phases and ... Anglo-French study which establishes a link between marine crocodilian ... period of more than 140 million years. , ... Universit de Lyon, France and formerly from the University ... Nature Communications ., Today, crocodiles are ,cold-blooded, animals that ...
(Date:8/19/2014)... Health Science Center at San Antonio and The University ... awarding of more than $750,000 in grants through the ... Launched in 2003, SALSI is a model of how ... science center join forces for greater research and graduate ... a focus on public health issues and diseases of ...
Breaking Biology News(10 mins):In-utero methadone, Subutex exposure could alter gene expression, cause severe Neonatal Abstience Syndrome 2Evolution of marine crocodilians constrained by ocean temperatures 2San Antonio Life Sciences Institute awards $750,000 to innovators 2San Antonio Life Sciences Institute awards $750,000 to innovators 3
... image of one of the proteins that serves as an on-off ... cell suggests there may be a sort of main power switch ... cells discern light, set the heart racing, or detect pain. ... Nature by a research collaboration involving this year,s Nobel laureates ...
... San Diego Calif. Ludwig researchers Arshad Desai and Christopher ... experiment to parse the molecular details of cell division about ... as a control that, in theory, had no chance of ... Intrigued, Campbell and Desai began exploring how it had defied ...
... a collection of craggy peaks, the highesta mountain known ... soldiers on duty in this mountainous terrain must often ... However, quick climbs without adapting to altitude can lead ... by headache, fatigue, gastrointestinal distress, nausea, and insomnia. ...
Cached Biology News:Structure of cell signaling molecule suggests general on-off switch 2A check on tension 22 days of staging as effective as 4 for high-altitude climbs 22 days of staging as effective as 4 for high-altitude climbs 3
(Date:8/20/2014)... 20, 2014 High performance computing ... the most complete climate and Earth system model ... change issues. , Eight national laboratories, including ... National Center for Atmospheric Research, four academic institutions ... Other participating national laboratories include Argonne, Brookhaven, Lawrence ...
(Date:8/20/2014)... Not long ago, it was more or ... late in the development cycle – even after the ... suggest that, like many things GxP, expectations for early ... multiple drug sponsors have been required by authorities to ... phase I/II. It’s not only clinical trial material containers ...
(Date:8/20/2014)... 20, 2014 GraphDB™ 6.0 ... including improvements to the enterprise replication cluster, faster ... Lucene, SOLR and Elasticsearch. This release happens to ... performance triplestore – GraphDB™ was formerly known as ... the only mature enterprise resilient RDF triplestore will ...
(Date:8/19/2014)... Pa. , Aug. 19, 2014 A ... has been nominated for a Centers for Disease Control ... addressing a major public health concern. ... System, is one of a team of researchers nominated ... Charles C. Shepard Science Award for Data Methods and ...
Breaking Biology Technology:New Project Is the ACME of Addressing Climate Change 2New Project Is the ACME of Addressing Climate Change 3Are Extractable and Leachables going Phase-Appropriate? New Webinar Hosted by Xtalks 2Ontotext Improves Its RDF Triplestore, GraphDB™ 6.0: Enterprise Resilience, Faster Loading Speeds and Connectors to Full-Text Search Engines Top the List of Enhancements 2Ontotext Improves Its RDF Triplestore, GraphDB™ 6.0: Enterprise Resilience, Faster Loading Speeds and Connectors to Full-Text Search Engines Top the List of Enhancements 3Ontotext Improves Its RDF Triplestore, GraphDB™ 6.0: Enterprise Resilience, Faster Loading Speeds and Connectors to Full-Text Search Engines Top the List of Enhancements 4Geisinger investigator nominated for federal award 2Geisinger investigator nominated for federal award 3
... Obstructive ... Sleep Apnea, Advanced ... Employee Productivity; Minimize Litigation Risks, CARLSBAD, Calif., Sept. 5 ... manage was the number,of hours a driver spent behind the wheel. ...
... WEST BRIDGEWATER, Mass., Sept. 5 Pressure,BioSciences, Inc. ... has received,approval to CE Mark the Barocycler NEP2320, ... (PCT) instrument. The,Company also announced that it has ... indicating that the Barocycler NEP2320 has been found ...
... a Proven Leader at Driving Growth, SAN FRANCISCO, ... equity firm that focuses on investments in selected segments,of ... software, today announced the appointment of Michael L. Hurt,to ... Mr. Hurt, CEO,of Altra Industrial Motion (Nasdaq: AIMC ...
Cached Biology Technology:Time For the Trucking and Heavy Machinery Industries to Wake Up! 2Time For the Trucking and Heavy Machinery Industries to Wake Up! 3Time For the Trucking and Heavy Machinery Industries to Wake Up! 4Time For the Trucking and Heavy Machinery Industries to Wake Up! 5Pressure BioSciences, Inc. Announces CE Mark Approval and Compliance with the IEC 61010-1 Standard for a Second PCT-based Instrument, the Barocycler NEP2320 2Pressure BioSciences, Inc. Announces CE Mark Approval and Compliance with the IEC 61010-1 Standard for a Second PCT-based Instrument, the Barocycler NEP2320 3Pressure BioSciences, Inc. Announces CE Mark Approval and Compliance with the IEC 61010-1 Standard for a Second PCT-based Instrument, the Barocycler NEP2320 4Genstar Names Michael Hurt to Its Strategic Advisory Board 2
Attachments: Clip bar for tubes 10 to 19 mm in diameter Overall Dimension Height IC: 6 (15.2) Overall Dimension Length IC: 18.5 (46.9) Overall Dimension Width IC: 4 (10.2)...
BD FastImmune EDTA Solution. Applications: Flow Cytometry Storage Temperature: Refrigerate(2 to 8C)...
... GRADE ,5-Bromo-4-chloro-3-indoxyl-beta-D-galactopyranoside C 14 H ... 6 ,M.W.= 408.63 ,Assay: Greater ... in DMF) ,Biological Activity: Blue color ... Analysis: Agrees with theoretical values ,Thin ...
Antibodies were affinity purified using epitopes specific to RFC1 immobilized on solid support....
Biology Products: