Navigation Links
Researchers Document Rapid, Dramatic 'Reverse Evolution' in the Threespine Stickleback Fish
Date:5/15/2008

Adaptation coincides with the '60s cleanup of toxic pollution in Seattle's

Lake Washington

SEATTLE, May 15 /PRNewswire/ -- Evolution is supposed to inch forward over eons, but sometimes, at least in the case of a little fish called the threespine stickleback, the process can go in relative warp-speed reverse, according to a study led by researchers at Fred Hutchinson Cancer Research Center and published online today ahead of print in the May 20 issue of Current Biology (Cell Press).

"There are not many documented examples of reverse evolution in nature," said senior author Catherine "Katie" Peichel, Ph.D., "but perhaps that's just because people haven't really looked."

Peichel and colleagues turned their gaze to the sticklebacks that live in Lake Washington, the largest of three major lakes in the Seattle area. Five decades ago, the lake was, quite literally, a cesspool, murky with an overgrowth of blue-green algae that thrived on the 20 million gallons of phosphorus-rich sewage pumped into its waters each day. Thanks to a $140 million cleanup effort in the mid-'60s -- at the time considered the most costly pollution-control effort in the nation -- today the lake and its waterfront are a pristine playground for boaters and billionaires.

It's precisely that cleanup effort that sparked the reverse evolution, Peichel and colleagues surmise. Back when the lake was polluted, the transparency of its water was low, affording a range of vision only about 30 inches deep. The tainted, mucky water provided the sticklebacks with an opaque blanket of security against predators such as cutthroat trout, and so the fish needed little bony armor to keep them from being eaten by the trout.

In 1968, after the cleanup was complete, the lake's transparency reached a depth of 10 feet. Today, the water's clarity approaches 25 feet. Lacking the cover of darkness they once enjoyed, over the past 40 years about half of La
'/>"/>

SOURCE Fred Hutchinson Cancer Research Center
Copyright©2008 PR Newswire.
All rights reserved

Page: 1 2 3 4

Related biology technology :

1. Glowing zebrafish help researchers track role of sugars in the cell
2. Researchers develop method for transmitting medical images via cell phones
3. Researchers create the first thermal nanomotor in the world
4. U-Md. Researchers Report Advance in Biological Microfactories for Drug Research
5. Boston College, MIT researchers achieve dramatic increase in thermoelectric efficiency
6. Iowa State researchers developing system to efficiently convert biomass to ethanol
7. Researchers engineer new polymers to change their stiffness and strength when exposed to liquids
8. Sigma-Aldrich Announces New Prestige Antibodies(TM) Line for Proteomics and Cell Biology Researchers
9. Stanford researchers hear the sound of quantum drums
10. Researchers at Leeds mine the Terahertz gap
11. Researchers create gold aluminum, black platinum, blue silver
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:12/17/2014)... Bellingham, Washington, USA (PRWEB) December 16, 2014 ... Kirstin Baum, manager at Philipps- Universität Marburg’s Department ... optics and photonics, in the newly released ... 2015-2016. “And never be too shy to ask ... STEM (science, technology, engineering, and mathematics) occupations ranging ...
(Date:12/17/2014)... IN (PRWEB) December 17, 2014 ... Laboratory Excellence following its most recent COLA inspection. ... by COLA, a national healthcare accreditation organization. Accreditation ... standards of quality in day-to-day operations, demonstrate continued ... pass a rigorous on-site laboratory survey. ...
(Date:12/17/2014)... CASI Pharmaceuticals, Inc. (Nasdaq: CASI ... and commercialization of innovative therapeutics addressing cancer and other ... primary commercial focus on China , ... C meeting with the U.S. Food and Drug Administration ... February 2015.  During this meeting the Company will seek ...
(Date:12/15/2014)... 2014 Organovo Holdings, Inc. (NYSE MKT: ... delivering breakthrough 3D bioprinting technology,  today celebrated continued ... its exVive3D TM Human Liver Tissue.  The ... commercial release on November 18, has been recognized ... awards for innovation. Most recently, on ...
Breaking Biology Technology:Network, Multitask, Persevere: SPIE Women in Optics Planner Subjects Share from Experience 2Network, Multitask, Persevere: SPIE Women in Optics Planner Subjects Share from Experience 3Xeno Diagnostics Receives 3rd Award for Laboratory Excellence 2CASI Pharmaceuticals Granted Type C Meeting With U.S. FDA For ENMD-2076 In Fibrolamellar Carcinoma 2CASI Pharmaceuticals Granted Type C Meeting With U.S. FDA For ENMD-2076 In Fibrolamellar Carcinoma 3CASI Pharmaceuticals Granted Type C Meeting With U.S. FDA For ENMD-2076 In Fibrolamellar Carcinoma 4CASI Pharmaceuticals Granted Type C Meeting With U.S. FDA For ENMD-2076 In Fibrolamellar Carcinoma 5Organovo Celebrates a Positive 2014 Reception of its exVive3DTM Human Liver Tissue Product 2Organovo Celebrates a Positive 2014 Reception of its exVive3DTM Human Liver Tissue Product 3
... company developing what it believes to be a novel tool ... tax credits from the State of Wisconsin to ... instead has raised a total of $385,000 from a combination ... to CEO Larry Wells, state law prohibits the company from ...
... Wis. - Last week, the nation marked ... stem cell research. Those restrictions have unquestionably set back ... say. , ,When Congress passed legislation that would ... among families whose loved ones are suffering from a ...
... - After months of speculation, North Prairie Productions, ... selected a site for a biodiesel plant that will produce ... will begin construction on the $42 million facility next spring ... side, where it will relocate its Waterloo offices. , ...
Cached Biology Technology:NovaScan decides against tax credits 2Stem cell research holds the promise for tomorrow 2Stem cell research holds the promise for tomorrow 3Evansville site chosen for biodiesel plant 2
(Date:12/17/2014)... 2014  HITLAB SM announced today its ... to confirm its adherence to current U.S. Food ... HITLAB to conduct regulated smart device and smart ... patient safety and research quality. "HITLAB ... and delivery with innovative technology," said Laura ...
(Date:12/17/2014)... Research and Markets ( http://www.researchandmarkets.com/research/9zq33j/global_chemical ... "Global Chemical Sensor Market 2015-2019" report to ... One major trend upcoming in ... sensors in biomedical applications. Chemical sensors help in ... diagnosis during surgical procedures. The Global Chemical Sensor ...
(Date:12/15/2014)... Research and Markets ( http://www.researchandmarkets.com/research/87pph8/global_facial ... "Global Facial Recognition Market 2015-2019" report to ... Facial recognition is a technology ... system measures the overall facial feature of a ... the distance between eyes. Facial recognition is used ...
Breaking Biology News(10 mins):HITLAB Completes GCP Audit for FDA Smart Device & App Compliance 2Global Chemical Sensor Market 2015-2019: Key Vendors are Abbott Laboratories, Bayer, Hoffmann La-Roche, Johnson & Johnson, NGK Spark Plugs and Robert Bosch 2Global Facial Recognition Market 2015-2019: Key Vendors are 3M Cogent, Cognitec Systems, NEC and Safran Group 2Global Facial Recognition Market 2015-2019: Key Vendors are 3M Cogent, Cognitec Systems, NEC and Safran Group 3
... farmers worldwide to plant genetically modified (GM) cotton to ... several years by saving on pesticides have now been ... researchers at the American Agricultural Economics Association (AAEA) Annual ... that other pests are now attacking the GM cotton. ...
... after the end-Cretaceous mass extinction was much more chaotic ... shows that at certain times and places, plant and ... as they are today. The extinction took place 65.5 ... the beginning of the Cenozoic Era and the Paleocene ...
... five major food crops grown under carbon-dioxide levels ... bounty than those raised in earlier greenhouse and ... global food supplies could be at risk without ... are based on on-going open-air research at the ...
Cached Biology News:Bt cotton in China fails to reap profit after seven years 2Insect predation sheds light on food web recovery after the dinosaur extinction 2Insect predation sheds light on food web recovery after the dinosaur extinction 3Insect predation sheds light on food web recovery after the dinosaur extinction 4Food-crop yields in future greenhouse-gas conditions lower than expected 2