Navigation Links
A snapshot of pupfish evolution in action

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
University of California - Davis

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:
Related Image:
A snapshot of pupfish evolution in action
(Date:9/2/2015)... Security of data and assets has ... organizations, telecommunications, hospitals, as well as individuals. Keys, ... used to prevent unauthorised access. Technological advancements resulted ... could gain access to secure premises after being ... devices and numeric codes. However, hackers also could ...
(Date:9/1/2015)... VIEW, Calif. , Sept. 1, 2015 /PRNewswire/ ... with travelers during airport passenger screening. This is ... the passenger screening process will become unintrusive. An ... pre-clearance based on voluntary background investigations will transform ... from Frost & Sullivan, Global Airport Passenger ...
(Date:8/31/2015)... , Aug. 31, 2015 Research and ... the "Saudi Arabia Biomedical Sensors Market - Growth, ... The Saudi Arabia Biomedical Sensors market ... CAGR of 3.64% over the period 2014-2020 ... adaptable to the genetic formulation of each individual. These ...
Breaking Biology News(10 mins):
... in the Biochemistry and Biophysics Department within the School ... has been awarded the 2012 Paul Ehrlich and Ludwig ... field of cell biology." The 100,000 German ... decades on how cells cope with stressinsight that has ...
... where two millipede species meet has been mapped in northwest ... but the two millipedes cross very little into each other,s ... km long and less than 100 m wide where carefully ... by Dr Bob Mesibov, who is a millipede specialist and ...
...  Rune, an information security firm committed to empowering ... Haggard has been appointed to its Board of ... background in the information security sector. He is ... of advanced state-of-the-art information security products in many ...
Cached Biology News:
(Date:10/7/2015)... 7, 2015  ChromaDex Corp. (OTCQX: CDXC), an ... that creates science-based solutions for dietary supplement, food ... products, today announced that the October 1 presentation ... is now available for on-demand viewing at ...   --> LINK: ...
(Date:10/7/2015)... ORANGEBURG, N.Y. , Oct. 7, 2015   ... solutions, today released an infographic that highlights key challenges ... selecting an appropriate disinfectant for the situation. This tool ... around steps hospitals can take to create efficiencies and ... The visual guide emphasizes examples of how ...
(Date:10/7/2015)... RADNOR, Pa. , Oct. 7, 2015   ... global, independent provider of laboratory products, services and ... Technologies Inc. (PTI), a specialty solvent company that ... solvents. This acquisition will enhance VWR,s growing laboratory ... its laboratory and biopharmaceutical manufacturing customers. ...
(Date:10/7/2015)... (PRWEB) , ... October 07, 2015 , ... ... today announced a webinar titled Smart Nanostructured Coatings to provide a comprehensive overview ... Register for this free webinar at . This webinar will be ...
Breaking Biology Technology:
... 5 innovative Essentially products for multiple ... health applications -, - Launch scheduled for April 2008 in ... ... QC, and EAST YORKSHIRE, United Kingdom, April 2,/PRNewswire-FirstCall/ - Neptune Technologies & Bioressources Inc. ...
... 2008 ABR-Affinity,BioReagents, a leading global antibody manufacturer, announced ... the 14th Annual Conference and,Exhibition of the Society for ... 2008., "We are extremely pleased to support the ... the SBS meeting, especially as it is a,non-profit forum. ...
... April 2, 2008 /Xinhua-PRNewswire-FirstCall/ -- China,Technology Development ... a provider of clean and renewable energy ... in China, today announced that the,Company attended ... Thin Film,Amorphous Silicon Solar Module manufacturing line ...
Cached Biology Technology:
... Human IgG Fd. ELISA Specificity: (4) ,human IgG subclass 1 ... ,human IgG subclass 3 100% ,human IgG subclass ... ... 0.04% ,human IgG Fab ...
Human VEGF R2 (KDR) MAb (Clone 89106)...
Salmonella typhimurium Immunogen: Heat inactivated bacterial cells of Salmonella typhimurium B Storage: 4 C...
Biology Products: