Navigation Links
Global climate change: The impact of El Nio on Galpagos marine iguanas
Date:12/12/2007

New Haven, Conn. A before-and-after study led by Yale biologists, of the effects of 1997 El Nio on the genetic diversity of marine iguanas on the Galpagos Islands, emphasizes the importance of studying populations over time and the need to determine which environmental and biological factors make specific populations more vulnerable than others.

According to the authors, recurring El Nio events provide an ideal system to study the impact of human-mediated climate change on ecosystems worldwide, by allowing observation of changes in populations associated with individual events.

Since global warming is expected to cause an increase in the strength and frequency of El Nio events, it is important to evaluate the impact of El Nio on natural populations and their capacity to respond to environmental stresses, said Gisella Caccone, senior research scientist in ecology and evolutionary biology at Yale, and senior author of the paper published this week in the Public Library of Science (PLoS) One.

In this study, the researchers investigated the effect of sea surface warming associated with the single, intense El Nio event of 1997 to 1998 on genetic diversity in Galpagos marine iguana populations. They found that populations within the same species responded very differently.

Collaboration between German scientists who fortuitously collected and archived samples between 1991 and 1993 and Yale researchers who sampled the iguanas in 2004 enabled these unique before-and after comparisons. More than 800 samples from 11 Galpagos marine iguana populations were evaluated.

The researchers looked for changes in levels of genetic variation in nuclear microsatellite DNA and mitochondrial DNA markers of samples collected before and after this El Nino event. Changes in microsatellite frequency are sensitive enough to detect low p
'/>"/>

Contact: Janet Rettig Emanuel
janet.emanuel@yale.edu
203-432-2157
Yale University  
Source:Eurekalert

Page: 1 2

Related biology news :

1. Global Warming and the Habitability of Planet Earth, Sept. 26
2. Green skies: Engineers work may reduce jet travels role in global warming
3. Scientists in first global study of poison gas in the atmosphere
4. North Americas northernmost lake affected by global warming
5. IEEE-USA innovation forum will help prepare US tech leaders to prosper in a global marketplace
6. Majority of Americans want local action on global warming, says poll
7. International team of scientists warns of climate changes impact on global river flow
8. Changing the global dietary environment
9. Global deal fuels QUTs world-changing research
10. NIH hosts event to launch Council of Science Editors global theme issue
11. Agricultural soil erosion is not adding to global warming

Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Global climate change: The impact of El Nio on Galpagos marine iguanas
Global climate change: The impact of El Nio on Galpagos marine iguanas
(Date:11/5/2009)...ining grant in the amount of $2,756,719 by the Nat...duation Education and Research Training (IGERT) pr... to Kent State. The grant, which is funded under t... runs through 2014. , The grant funds an IGERT p...e sensing (EARS). The purpose of the program is to...
(Date:11/4/2009)...g Beach and Riverside are responsible for a signif...and the true impact of air pollution and ship emis...d, according to researchers at the University of S...pears in an online edition of the American Journa...f all childhood asthma cases in Long Beach and six...
(Date:11/4/2009)... DNA codes, or genomes, of the famed fugu (or puff...10K Project, an international effort to build an i...ecies of animals for conducting comparative studie..., Participating in The Genome 10K project, descri... of the Journal of Heredity , are 70 leading scie...
Breaking Biology News(10 mins):Kent State receives $2.7 million NSF training grant for environmental aquatic resource sensing 2USC study finds big air pollution impacts on local communities 2Singapore scientists join international study of 10,000 vertebrates' genomes 2Radiology Benefit Management Could Save Medicare up to 2418 Billion Over 10 Years 51941 1Radiology Benefit Management Could Save Medicare up to 2418 Billion Over 10 Years 51941 2Radiology Benefit Management Could Save Medicare up to 2418 Billion Over 10 Years 51941 3Scientists Reverse Muscular Dystrophy in Mice 51938 1Scientists Reverse Muscular Dystrophy in Mice 51938 2Scientists Reverse Muscular Dystrophy in Mice 51938 3Arcadian Chairman and Chief Executive Officer Robert Fahlman to Present at Focus on Healthcare Conference in New York City 51935 1
...y the National Institute on Drug Abuse (NIDA), par...he first time identified genes that might increase...reakthrough research was conducted by Dr. George U...m led by Dr. Jed Rose at the Center for Nicotine a...edical Center. , The study, published in the journ...
... of Allergy and Infectious Diseases (NIAID), part ...announced it is awarding $23 million per year for ... for Influenza Research and Surveillance. Collecti...rveillance program internationally and in the Unit...key areas, including understanding how the virus c...
...n that reduced calorie intake can increase health ...ity of California) and his collaborators* have dis... can still induce many of the health and longevity...tly, this also includes anti-cancer effects. , Th...creening technique to find drugs which mimic this ...
Other Biology News:NIDA study identifies genes that might help some people abstain from smoking 2NIAID expands capability for influenza research and surveillance 2NIAID expands capability for influenza research and surveillance 3NIAID expands capability for influenza research and surveillance 4It's never too late to get it back! Aging interrupted 2
(Date:11/9/2009).../ -- NexBio, Inc. announced the presentation of ne...rgy, Asthma, and Immunology in Miami, Florida. Th...), a Sialidase, Decreases Airway Resistance and Ha...s of Asthma". ,, DAS181 (Fludase ® ) is an...g candidate being studied in human clinical develo...
(Date:11/9/2009)...he top 10 pharmaceutical giants use Datafarm for p...ada. Datafarm’s announcement comes on the he...eeting where Health Canada stated that, effective ...CTD regulatory submissions for New Drug Submission...st. , Marlborough, MA (PR...
(Date:11/9/2009)...swire/ -- Following the provision of clinical,and ...tion (FDA), privately,owned UK company Daval Inter...om ) has been informed that its innovative,anti-in...phan-Drug,designation for the treatment of Amyotro... known as Lou Gehrig,s disease, is the most common...
(Date:11/8/2009).... 5, 2009 Complete Genomics, a third-generation h...blication of a report in the journal Science des...ncluding analysis of sequence data from three comp... three genomes sequenced on the proof-of-principle... coverage to $1,726 for 45x coverage for the sampl...
Breaking Biology Technology:NexBio(R) Presents Data Showing Anti-Asthma Activity of DAS181 (Fludase(R)*) at ACAAI 2009 2NexBio(R) Presents Data Showing Anti-Asthma Activity of DAS181 (Fludase(R)*) at ACAAI 2009 3Datafarm Responds to Health Canada's Announcement of Hybrid eCTD Submission Procedural Simplification 2Complete Genomics publishes in Science on low-cost sequencing of 3 human genomes 2
...IN LAKES, N.J., March 13 Medco Health,Solutions, ...eed to sell $300,million aggregate principal amoun... and $1.2 billion aggregate principal amount of 7-...underwritten public offering. Citi,J.P. Morgan Sec...arclays,Capital Inc. are acting as representatives...
... Generation Treatment from Abbott Shows No Thrombo...ary Clinical Study of Thirty Patients, ABBOTT PAR...cet from ABSORB, the world,s first clinical trial ...e treatment of coronary artery,disease, demonstrat...t,lesion revascularizations (retreatment of a dise...
...EY, Calif., March 13 Nile Therapeutics,Inc. (OTC ...quarter and,full year financial results for 2007. ...e conference call from the investor relations sect... . The webcast will remain available on,the compan...ll., For the fourth quarter of 2007, Nile reporte...
Other Biology Technology:Medco Issues $1.5 Billion of Senior Notes 2Medco Issues $1.5 Billion of Senior Notes 3The Lancet Publishes Results From World's First Clinical Trial of a Fully Bioabsorbable Drug Eluting Coronary Stent 2The Lancet Publishes Results From World's First Clinical Trial of a Fully Bioabsorbable Drug Eluting Coronary Stent 3The Lancet Publishes Results From World's First Clinical Trial of a Fully Bioabsorbable Drug Eluting Coronary Stent 4Nile Therapeutics Reports 2007 Fourth Quarter and Full Year Financial Results 2Nile Therapeutics Reports 2007 Fourth Quarter and Full Year Financial Results 3
Mouse Anti-Human huntingtin Monoclonal Antibody, Unconjugated from Developmental Studies Hybridoma Bank
PureLink HiPure Plasmid Filter Midiprep Kit from Invitrogen
ViraPower UbC Lentiviral Gateway Expression Kit from Invitrogen
ViraPower Lentiviral Packaging Mix from Invitrogen
Biology Products: