Navigation Links
A snapshot of pupfish evolution in action
Date:1/10/2013

Chris Martin has bred more than 3,000 hybrid fish in his time as a graduate student in evolution and ecology at UC Davis, a pursuit that has helped him create one of the most comprehensive snapshots of natural selection in the wild and demonstrated a key prediction in evolutionary biology.

"We can see a surprisingly complex snapshot of natural selection driving the evolution of new specialized species," said Martin, who with Professor Peter Wainwright published a paper on the topic in the Jan. 11, 2013, issue of the journal Science.

The "adaptive landscape" is very important for evolutionary biology, but rarely measured, Martin said. He's been fascinated with the concept since high school.

An adaptive landscape takes variable traits in an animal or plant, such as jaw size and shape, spreads them over a surface, and reveals peaks of success (what evolutionary scientists call fitness) where those traits become most effective, or adaptive.

It is a common and powerful idea that influences thinking about evolution. But while the concept is straightforward, it is much harder to map out such a landscape in the wild.

For example, about 50 species of pupfish are found across the Americas. The tiny fish, about an inch or so long, mostly eat algae on rocks and other detritus. Martin has been studying species found only in a few lakes on the island of San Salvador in the Bahamas, where some of the fish have evolved different-shaped jaws that allow them to feed on hard-shelled prey like snails or, in one case, to snatch scales off other fish.

In a paper published in 2011, Martin showed that these San Salvadoran fish are evolving at an explosively faster rate than other pupfish.

Martin brought some of the fish back to the lab at UC Davis and bred hybrids with fish with different types of jaws. He created about 3,000 hybrids in all, which were measured, photographed and tagged. Martin then took about 2,000
'/>"/>

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

Page: 1 2

Related biology news :

1. Leading evolutionary scientist to discuss how genome of bacteria has evolved
2. An evolutionary surprise
3. Ancient Egyptian cotton unveils secrets of domesticated crop evolution
4. Did climate change shape human evolution?
5. A University of Tennessee professors hypothesis may be game changer for evolutionary theory
6. Analysis of stickleback genome sequence catches evolution in action
7. Study shows unified process of evolution in bacteria and sexual eukaryotes
8. Rapid method of assembling new gene-editing tool could revolutionize genetic research
9. Whats in a surname? New study explores what the evolution of names reveals about China
10. Scientists trace evolutionary history of what mammals eat
11. Not by DNA alone: How the epigenetics revolution is fostering new medicines
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
A snapshot of pupfish evolution in action
(Date:8/5/2015)... MOUNTAIN VIEW, Calif. , Aug. 5, 2015 /PRNewswire/ ... it exhibits continuous growth in applications, penetration into newer ... year after year. The global biosensors space has seen ... having exited the market so far. (Photo ... from Frost & Sullivan, Analysis of the Global ...
(Date:7/31/2015)... de 2015 BGI llevará a cabo la 10ª ... al 25 de octubre de 2015, en ... su décimo aniversario este año. Desde su inauguración en ... reuniones anuales más influyentes del mundo en los campos ... científicas más dinámicas, entusiastas y amenas. ICG-10 ...
(Date:7/31/2015)... Conn. , Jul. 31, 2015 NXT-ID, Inc. ... biometric authentication company focused on the growing mobile commerce ... that it has filed provisional patent 62/198989 for ... This invention highlights a method to advance crypto-currencies such ... by introducing a common, uniform way to manage all ...
Breaking Biology News(10 mins):Innovative Biosensors Incite Use in Non-Traditional Applications 2Innovative Biosensors Incite Use in Non-Traditional Applications 3Innovative Biosensors Incite Use in Non-Traditional Applications 4La 10ª Conferencia Internacional sobre Genómica (ICG-10) comienza en octubre 2La 10ª Conferencia Internacional sobre Genómica (ICG-10) comienza en octubre 3NXT-ID Patents Electronic Crypto-Currency Management Technology 2NXT-ID Patents Electronic Crypto-Currency Management Technology 3NXT-ID Patents Electronic Crypto-Currency Management Technology 4
... plague belongs to a virulent family of bacteria called ... for food poisoning. These bacteria insert into their host ... -- among other things -- disrupting the cells' normal ... cell's internal skeleton. Now, a study published by Rockefeller ...
... the Translational Genomics Research Institute (TGen) in Phoenix, ... discover a gene--called Kibra--associated with memory performance in ... develop new medicines for memory-based diseases such as ... better understanding of how memory works at the ...
... low birth weights tend to have a much lower quality of ... a study published in the latest issue of the UK-based Journal ... birth weights of 1500g or less and compared them with a ... quality of life when it came to physical, emotional, cognitive and ...
Cached Biology News:A wolf in sheep's clothing: Plague bacteria reveal one of their virulence tricks 2Affymetrix 500K array used to identify memory gene 2Very low birth weight linked to reduced quality of life in pre-school children 2
(Date:8/27/2015)... ... August 27, 2015 , ... The Kansas City ... firms and animal health companies to hear from animal health companies with the ... also received licensing agreements or distribution contracts. This meeting is one of ...
(Date:8/27/2015)... /PRNewswire/ - Portage Biotech Inc. ("Portage") (OTC Market: ... Holding Company Limited (Biohaven), announced today that dosing ... BHV-0223, a glutamate modulating agent. Biohaven filed an ... obtained clearance from the U.S. Food and Drug ... holds 54% equity interest in Biohaven, a private ...
(Date:8/27/2015)... , Aug. 27, 2015 /PRNewswire/ - BIOREM Inc. (TSXV: BRM) ("Biorem" ... six-month periods ended June 30, 2015. Biorem,s complete second quarter financial ... FINANCIAL HIGHLIGHTS: in ,000,s except earnings per shareThree-months ended , ... 2014 , 2015 , 2014 Revenue , ... , 4,433 Gross profit , 1,656 , ...
(Date:8/27/2015)... Boston, MA (PRWEB) , ... August 27, 2015 , ... ... the United States, ranking iLab Solutions as number 1,361 in growth for the three ... part of the top 0.1% fastest-growing privately held organizations in the country. , ...
Breaking Biology Technology:VetStem Biopharma, Inc. Among Seventeen Companies Selected to Present at the KC Animal Health Investment Forum on September 1st 2015 2VetStem Biopharma, Inc. Among Seventeen Companies Selected to Present at the KC Animal Health Investment Forum on September 1st 2015 3Portage's Biohaven doses first human subject in Phase 1 trial with lead drug candidate BHV-0223 2Portage's Biohaven doses first human subject in Phase 1 trial with lead drug candidate BHV-0223 3Portage's Biohaven doses first human subject in Phase 1 trial with lead drug candidate BHV-0223 4BIOREM Reports $718,000 Net Earnings for the Second Quarter 2BIOREM Reports $718,000 Net Earnings for the Second Quarter 3iLab Solutions Named to 2015 Inc. 5000 List 2iLab Solutions Named to 2015 Inc. 5000 List 3
... Israel, April 28 ITGI Medical, Ltd.,(TASE: ITGI) ... of heterologous tissue covered stents, announced that the ... (Humanitarian Use Device),designation to Over and Under(R) and ... dissections of native coronary arteries and,Saphenous Vein Grafts. ...
... Mich., April 28 The following news advisory is ... Business Meeting - During the meeting an important development ... MichBio, Michigan,s trade association for the bioscience industry When: ... Reception , 6:30 p.m. Dinner , 7:00 p.m. Meeting ...
... also Initiates the Phase 2b ASTUTE Clinical Trial for ... Inc., a privately held biopharmaceutical company, announced that data ... treatment of patients with low-grade hepatic encephalopathy was presented ... European Association for the Study of Liver Disease (EASL) ...
Cached Biology Technology:Key Industry-Relevant Development to be Announced at MichBio's 2009 Annual Meeting on May 6 2Ocera Therapeutics Presents Data on AST-120 in Patients With Hepatic Encephalopathy at the European Association for the Study of Liver Disease Annual Meeting 2Ocera Therapeutics Presents Data on AST-120 in Patients With Hepatic Encephalopathy at the European Association for the Study of Liver Disease Annual Meeting 3
This kit is designed to select cells labeled with biotinylated antibodies. Kit includes reagents for labeling 3 x 10 9 cells and EasySep magnet....
Designed for use with the Agencourt CleanSEQ and Agencourt AMPure 384-well SPRI reagent kits. For use with 384-well thermal cycling plates....
SDS-OutT Precipitation Reagent...
Physical Form: saline suspension with ethanol Particle Dim: mean particle size 50 μm Matrix: HyperD F. Useful for the removal of detergents from protein samples....
Biology Products: