Navigation Links
Lizards change their diet to avoid predators
Date:12/2/2009

A scientist from the University of Salamanca and another from Yale University have shown that the presence of predators affects the behaviour of Acanthodactylus beershebensis, a lizard species from the Negev Desert in the Near East. According to the study, these reptiles move less and catch less mobile and different prey if they are under pressure from predators.

Many theoretical models had predicted this result, but until now there had been very few experimental trials and none in the case of saurians (reptiles). This experiment by Dror Hawlena, a researcher at Yale University in the United States, and Valentn Prez-Mellado, a researcher at the University of Salamanca, has shown that certain animals, such as the insectivore lizard Acanthodactylus beershebensis, can change their behaviour and diet to avoid being eaten.

"When there is greater pressure from predators, the individuals tend to move less and catch more mobile prey from somewhat different groups. The lizards' diet and food-seeking behaviour changed significantly when we experimentally increased the predation pressure on them", Prez-Mellado tells SINC.

The study, published recently in the journal Oecologia, shows that reptiles threatened by predators become less selective and eat a more diverse range of foods, according to Prez-Mellado, who was in charge of analysing their diet in Spain. The field work done over the summer months in 2000 and 2001 in the Negev Desert in Israel was carried out by Hawlena.

The scientists studied the species' diet data (trophic ecology) in two different situations with and without predators. The Spanish researcher analysed the contents of 327 faecal pellets taken from 291 different lizards in order to reconstruct their diet. Ants were the prey most commonly consumed by the lizards, both by those at risk (69.32%) and the controls (67.12%), followed by insects such as termites (19.14% and 19.17% respectively). The
'/>"/>

Contact: SINC
info@plataformasinc.es
34-914-251-820
FECYT - Spanish Foundation for Science and Technology
Source:Eurekalert  

Page: 1 2

Related biology news :

1. Genetic study finds treasure trove of new lizards
2. How can scientists measure evolutionary responses to climate change?
3. International expedition investigates climate change, alternative fuels in Arctic
4. Saliva proteins change as women age
5. AAAS exhibit featuring photographs of climate change opens Nov. 18
6. Avoiding dangerous climate change: Is geo-engineering the answer?
7. Lifestyle changes may stave off diabetes for a decade
8. Changes in brain chemicals mark shifts in infant learning
9. Studies improve knowledge of underlying brain changes caused by addiction
10. Queens scientists on international team discover ecologically unique changes in Arctic lake
11. Arctic lake sediments show warming, unique ecological changes in recent decades
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Lizards change their diet to avoid predators
(Date:10/18/2014)... of patients with undiagnosed, suspected genetic conditions, a certain ... higher molecular diagnostic yield than traditional molecular diagnostic methods, ... The study is being released to coincide with the ... sequencing, which sequences the protein­coding region of the genome ... in a cell or organism), has been rapidly applied ...
(Date:10/17/2014)... This news release is available in German . ... for only a very few drugs. When treating overdoses, doctors ... Treatment is especially difficult if there is a combination of ... is playing and accidentally swallows his grandmother,s pills? ETH professor ... Zurich wanted to find an answer to this question. "The ...
(Date:10/16/2014)... on how the bowel lining develops and, in the ... starts. , The researchers produced evidence that stem cells ... are a feature of the bowel lining, and believe ... a controversial finding as scientists are still divided on ... Dr Chin Wee Tan and Professor Tony Burgess from ...
Breaking Biology News(10 mins):Study examines type of exome sequencing and molecular diagnostic yield 2Study examines type of exome sequencing and molecular diagnostic yield 3Emergency aid for overdoses 2Emergency aid for overdoses 3Cryptic clues drive new theory of bowel cancer development 2
... The dietary supplement CDP-choline, sold as a brain-boosting ... injury, may block skull and brain damage that can ... of Georgia researchers report. Alcohol consumption in ... ceramide, significantly increasing suicide among cells critical to skull ...
... deadly disease that has wiped out more than 100 species, ... new frog species in Panama: Pristimantis educatoris , from ... Darien Province near the Colombian border. , In 1989 researchers ... identified the cause: a fungal disease called chytridiomycosis. In 2004 ...
... release is available in French . , In ... of Biochemistry have discovered that a small segment of a ... of genes including those that are active in cancer. ... the prestigious journal Nature, has important immediate applications ...
Cached Biology News:Supplement may prevent alcohol-related brain, skull defects 22 new frog species discovered in Panama's fungal war zone 2McGill team discovers a piece of the puzzle for individualized cancer therapy via gene silencing 2
(Date:10/20/2014)... , Oct. 20, 2014 Asterias ... the Company has signed a Notice of Grant ... Medicine (CIRM), effective October 1, 2014.  The NGA ... payments and the release of additional grant funds ... grant award for clinical development of Asterias, product, ...
(Date:10/20/2014)... OncLive® is pleased ... at Thomas Jefferson University has joined its Strategic ... Alliance Partnership program, the Sidney Kimmel Cancer Center ... awareness of the Center’s cutting-edge research programs, comprehensive ... and other health care professionals from the Sidney ...
(Date:10/19/2014)... NextCODE Health, which enables clinicians and researchers to use full ... the launch of its new genomic data analysis and collaboration ... of Human Genetics (ASHG) annual meeting in San ... for free beta access, visit www.nextcode.com . A brief ... here . The Exchange: , ...
(Date:10/19/2014)... (PRWEB) October 19, 2014 The Asian Orthopedic ... market in Asia with analysis and forecast of revenue. The ... to grow to around $416.5 million by 2018, at a ... through the TOC of the Asian Orthopedic braces and support ... provided. This also provides a glimpse of the segmentation of ...
Breaking Biology Technology:Asterias Biotherapeutics Announces Notice of Grant Award with CIRM for Phase 1/2a Clinical Trial of AST-OPC1 in Complete Cervical Spinal Cord Injury 2Asterias Biotherapeutics Announces Notice of Grant Award with CIRM for Phase 1/2a Clinical Trial of AST-OPC1 in Complete Cervical Spinal Cord Injury 3Asterias Biotherapeutics Announces Notice of Grant Award with CIRM for Phase 1/2a Clinical Trial of AST-OPC1 in Complete Cervical Spinal Cord Injury 4Sidney Kimmel Cancer Center at Thomas Jefferson University Partners With OncLive 2Sidney Kimmel Cancer Center at Thomas Jefferson University Partners With OncLive 3The NextCODE Exchange: The first global, real-time system for sharing full-resolution genomic data 2The NextCODE Exchange: The first global, real-time system for sharing full-resolution genomic data 3The Asian Orthopedic braces and support systems market is estimated to grow to around $416.5 million by 2018 - New Report by MicroMarket Monitor 2The Asian Orthopedic braces and support systems market is estimated to grow to around $416.5 million by 2018 - New Report by MicroMarket Monitor 3The Asian Orthopedic braces and support systems market is estimated to grow to around $416.5 million by 2018 - New Report by MicroMarket Monitor 4
... N.Y., June 25 Lixte,Biotechnology Holdings (OTC Bulletin ... Neurological Disorders and Stroke (NINDS), National,Institutes of Health ... Research and Development Agreement (CRADA) to develop,drugs for ... in March,2006 was extended through September 2009., ...
... MichBio announced that,Johnson & Johnson Vice Chairman, Christine A. ... and Conference November 18-19 in Novi,Michigan. MichBio is the ... is the state,s premier life science event attracting,more than ... is one of the most respected professionals in the ...
... titled “Avanta AC™ Advanced Ceramics Solutions as ... white paper outlines the challenges in manufacturing ... as well as the advantages of SACHEM’s ... are critical to a variety of leading ...
Cached Biology Technology:Lixte Biotechnology Holdings Announces Extension of Its Cooperative Research and Development Agreement With The National Institute of Neurological Disorders and Stroke, National Institutes of Health, for Development of Anti-Brain Cancer Drugs 2Lixte Biotechnology Holdings Announces Extension of Its Cooperative Research and Development Agreement With The National Institute of Neurological Disorders and Stroke, National Institutes of Health, for Development of Anti-Brain Cancer Drugs 3Christine Poon Will Keynote MichBio Expo 2Christine Poon Will Keynote MichBio Expo 3 SACHEM Launches New Products for High Purity Advanced Ceramic Powders : Avanta AC™ Advanced Ceramics Solutions Offer Unique Advantages over Inorganic Bases in the Manufacture of Advanced Ceramic Nanoparticles 2
Determin interaction of your protein with Echelons lipids...
Goat Anti-Horse IgG(T) Antibody, Unconjugated...
PA coated Agarose beads LPA Beads...
... to PAX3 This protein is a ... of transcription factors. Members of the PAX ... and a paired-type homeodomain. These proteins play ... paired box gene 3 are associated with ...
Biology Products: