Navigation Links
Study sheds light on how marine animals survive stress
Date:5/25/2010

MEDFORD/SOMERVILLE, Mass. -- For marine iguanas living in the Galapagos Islands, an El Nio can be deadly. Some die from starvation while others survive. Scientists have long believed that the difference between life and death for the iguana depended on the animals' ability to secrete the stress hormone corticosterone.

Under stressful conditions, corticosterone functions like a spigot by controlling how the body expends energy during an emergency. It is associated with the "fight or flight" response to stress and is similar to cortisol in humans. But corticosterone can also be lethal if the spigot is not turned off, according to a study of marine iguanas published in the May 26 online issue of the Proceedings of the Royal Society.

The findings could provide insight into how wildlife in the Gulf of Mexico will respond to the current oil spill. Animals will secrete corticosterone to help them cope with the disaster. However, prolonged hormone production could factor into how well animals are able to survive the crisis.

From 2002 through 2008, a research team led by Tufts University Professor of Biology L. Michael Romero studied corticosterone levels in iguanas on Santa Fe Island before and after the El Nio that struck in late 2002.

The team, funded by the National Science Foundation, included co-author Martin Wikelski from the Max Planck Institute for Ornithology and Konstanz University.

The Galapagos Islands' marine iguanas are a suitable model for study because they live in predictable natural conditions. The animals feed exclusively on marine algae. Their greatest and almost only threat or stress occurs during recurrent El Nio-induced food shortages, when a decrease of algae can lead to starvation.

The scientists captured 98 healthy male iguanas on the island in December 2002, just weeks before the El Nio. They injected a group of the animals with a hormone to stimulate a biological process called nega
'/>"/>

Contact: Alexander Reid
alexander.reid@tufts.edu
617-627-4173
Tufts University
Source:Eurekalert

Page: 1 2

Related biology news :

1. Childhood obesity indicates greater risk of school absenteeism, Penn study reveals
2. A study by the MUHC and McGill University opens a new door to understanding cancer
3. Study begins to reveal clues to the cause and progression of sepsis
4. Clones on task serve greater good, evolutionary study shows
5. New study warns limited carbon market puts 20 percent of tropical forest at risk
6. New study examines how rearing environment can alter navigation
7. Study links cat disease to flame retardants in furniture and to pet food
8. New continent and species discovered in Atlantic study
9. Study shows link between alcohol consumption and hiv disease progression
10. Feeling hot, hot, hot: New study suggests ways to control fever-induced seizures
11. Study finds environmental tests help predict hospital-acquired Legionnaires disease risk
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:7/31/2015)... Den 10. internationale konference om Genomik (ICG-10, ... - 25. oktober i Shenzhen , ... i år. Siden starten i 2006 er ICB blevet ... og er en af de mest dynamiske, entusiastiske og ... nylige gennembrud og fremskridt inden for ,omik,-forskning, som yderligere ...
(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)... de julho de 2015 A 10 a. ... será realizada pela BGI de 22-25 de outubro de 2015, ... A conferência está celebrando seu 10 o. aniversário ... se tornou uma das reuniões mais influentes do mundo ... mais dinâmicos, entusiastas e prazerosos. A ...
Breaking Biology News(10 mins):Den 10. internationale konference om Genomics (ICG-10) åbner i oktober 2La 10ª Conferencia Internacional sobre Genómica (ICG-10) comienza en octubre 2La 10ª Conferencia Internacional sobre Genómica (ICG-10) comienza en octubre 3A 10a. Conferência Internacional sobre Genômica (ICG-10) será em outubro 2A 10a. Conferência Internacional sobre Genômica (ICG-10) será em outubro 3
... Although studies of alcohol,s effects on fetal growth have ... on long-term postnatal growth from human studies have been ... heavy prenatal alcohol exposure (PAE) on growth and body ... through to nine years of age, as well as ...
... to a NOAA-led paper published today in the journal ... mainly due to ships, have reduced the ability of ... each other by about two-thirds. From 2007 until ... Lab of Ornithology, NOAA Fisheries Northeast Fisheries Science Center, ...
... - Bureau of Reclamation Commissioner Michael L. Connor ... $1.2 million, and Reclamation will partner with other ... projects to benefit the Desert and Southern Rockies ... to provide more than $3.5 million for these ...
Cached Biology News:Tracking the effects of prenatal alcohol exposure through to 9 years of age 2Tracking the effects of prenatal alcohol exposure through to 9 years of age 3NOAA: Underwater noise decreases whale communications in Stellwagen Bank sanctuary 2WaterSMART funds $1.7 million for science projects in desert and southern Rockies LCCs 2WaterSMART funds $1.7 million for science projects in desert and southern Rockies LCCs 3
(Date:7/31/2015)... , July 31, 2015 In today,s ... that help them drive positive health outcomes, improve ... source of patient care in their communities. At ... tradeshow and conference, AmerisourceBergen announced a new set ... Services Administration Organization and help independent pharmacies endure ...
(Date:7/31/2015)... ... July 31, 2015 , ... Global Resorcinol Market 2015-2019 ... insights on the global resorcinol industry. The report highlights the various growth prospects ... scenarios and analysis of primary and secondary inputs from the existing players of ...
(Date:7/31/2015)... KONG , July 31, 2015 China ... China,s leading provider of cord ... stem cell storage services, today announced that the Company ... the U.S. Securities and Exchange Commission. The filed Form ... ended March 31, 2015. The Form 20-F can be ...
(Date:7/31/2015)... ... July 31, 2015 , ... R-Biopharm is proud to ... hydrolyzed gluten in foods, has been accepted by AOAC International as Official First ... in Fermented Cereal-Based Products by R5 Competitive ELISA,” based on a specific monoclonal ...
Breaking Biology Technology:AmerisourceBergen Unveils Suite of Enhanced Capabilities for Independent Pharmacies at ThoughtSpot 2015 2AmerisourceBergen Unveils Suite of Enhanced Capabilities for Independent Pharmacies at ThoughtSpot 2015 3Resorcinol Market to Grow at 6% CAGR to 2019 Says New Research Report at ReportsnReports.com 2Resorcinol Market to Grow at 6% CAGR to 2019 Says New Research Report at ReportsnReports.com 3Resorcinol Market to Grow at 6% CAGR to 2019 Says New Research Report at ReportsnReports.com 4China Cord Blood Corporation Files Its Annual Report on Form 20-F 2RIDASCREEN® Competitve Gliadin Receives AOAC Official First Action Status 2
... 18 Paragon Bioservices, Inc., a contract research and ... Lilly Global Supplier Award for exceptional performance in support ... be recognized in this manner by such an elite ... guiding principles of quality, excellence and superior customer service ...
... a paper published,today in the online edition of Nature ... academic colleagues from Iceland, Denmark and the,Netherlands present the ... human genome (SNPs) that influence the age of girls ... is influenced by both genetic,and environmental factors, though the ...
... 15 Senetek PLC (OTC Bulletin Board: SNKTY), a ... that target the science of healthy aging, announced that ... is now available by calling 877-SENETEK in the United ... are pleased to provide this service to our investors ...
Cached Biology Technology:deCODE Study Shows Complex Interplay of the Human Biological Clock With Height, Weight and Disease 2deCODE Study Shows Complex Interplay of the Human Biological Clock With Height, Weight and Disease 3deCODE Study Shows Complex Interplay of the Human Biological Clock With Height, Weight and Disease 4Senetek PLC Investor Hotline Goes Live 2
... acid , DTNB , Ellman's reagent ... *CAS-No.: 69-78-3 *Storage: RT, When ... reactive grouping not present in the substrate, it ... will react directly with the product to form ...
Cag-A (IgG) -Ab EIA Sample Size: 10 l...
... Inhibitor is a recombinant human protein produced in ... neutral pancreatic RNase A type enzymes. The ... binds RNases in a 1:1 ratio. The enzyme ... many tissues and cell types. Addition of the ...
...
Biology Products: