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:9/2/2014)... led by researchers at the University of Warwick in ... just published in the Journal Early Human Development ... spent in hospital after birth and the use of ... in preterm children. , Mathematic abilities are crucial for ... in very preterm children. Earlier studies of children who ...
(Date:9/2/2014)... the battle between our immune systems and cholera bacteria, ... known as phages. In a new study, researchers from ... National Public Health Laboratory, and elsewhere, report that phages ... in order to survive. Importantly, the study published ... escape from phage predation occurs during human infection. , ...
(Date:9/2/2014)... author Sam Kean stops by Reactions this week to ... shark that, despite what "Shark Week" may lead you ... at http://youtu.be/KhFygIoW_MA . , Kean,s book, "The Disappearing ... the History of the World from the Periodic Table ... a 10-episode video series produced for the newly launched ...
Breaking Biology News(10 mins):Mechanical ventilation a key indicator for pre-term children's math problems 2War between bacteria and phages benefits humans 2War between bacteria and phages benefits humans 3
... New research from The University of Western Ontario leads ... the Arctic Circle during the Pleistocene Epoch (approx. 150,000 ... three years later than modern day African elephants due ... nursing pattern could have contributed to the prehistoric elephant,s ...
... 21, 2010 Reportlinker.com announces that a new market ... Indian Biometric Market http://www.reportlinker.com/p0351944/Indian-Biometric-Market.html ... fastest emerging technology in the Indian Securities & Identification ... many conventional methods of Identity & Security checks like, ...
... Miscanthus x giganteus is the forerunner in the ... researchers believe "putting all their eggs in one basket" could ... recently reported the first natural occurrence in several decades of ... M. x giganteus is the only variety available, ...
Cached Biology News:Being good moms couldn't save the woolly mammoth 2New Miscanthus hybrid discovery in Japan could open doors for biofuel industry 2New Miscanthus hybrid discovery in Japan could open doors for biofuel industry 3
(Date:9/2/2014)... Ore. -- Scientists, including University of Oregon chemist ... create scaffolds of self-assembling, synthetic proteins called peptoid ... , The accomplishment -- detailed this week in ... the Proceedings of the National Academy of ... alternative design of the two-dimensional peptoid nanosheets that ...
(Date:9/2/2014)... NEW YORK , September 2, 2014 ... Market Study on Membrane Technology in Pharmaceutical, Biopharma and ... Witness Highest Growth by 2019" the global membrane technology market for ... 7,029.9 million in 2014 and is expected to grow ... to reach an estimated value of USD 10,886.0 million ...
(Date:9/2/2014)... , Sept. 2, 2014  Technology Applications International ... that its wholly-owned subsidiary Renuell Int,l, Inc. has signed ... and Space Administration ("NASA") at the Johnson Space Center ... See photos: tapplic.com/houstonphotos/ ... are very pleased to announce our latest, exclusive agreement ...
(Date:9/2/2014)... (PRWEB) September 02, 2014 Opertech ... new highly efficient, cost effective approach to sensory ... No. 8,820,265 by the U.S. Patent and Trademark ... Opertech. , “Opertech’s taste evaluation technology ... first automated high throughput system for rapid characterization ...
Breaking Biology Technology:UO-Berkeley Lab unveil new nano-sized synthetic scaffolding technique 2Global Membrane Technology Market Will Reach $10,886.0 Million in 2019: Persistence Market Research 2Global Membrane Technology Market Will Reach $10,886.0 Million in 2019: Persistence Market Research 3Global Membrane Technology Market Will Reach $10,886.0 Million in 2019: Persistence Market Research 4Global Membrane Technology Market Will Reach $10,886.0 Million in 2019: Persistence Market Research 5Technology Applications International Corporation Subsidiary Enters Into Additional Exclusive Agreement with NASA at a Signing Ceremony at the Johnson Space Center In Houston, Texas 2Technology Applications International Corporation Subsidiary Enters Into Additional Exclusive Agreement with NASA at a Signing Ceremony at the Johnson Space Center In Houston, Texas 3Opertech Bio Receives U.S. Patent for High-Throughput Taste Evaluation Technology 2
... Therapeutics,Inc. (OTC Bulletin Board: ARNI), today announced that ... has changed from "LRRI.OB" to "ARNI.OB",effective July 17, ... Inc. is a clinical-stage biopharmaceutical company,that develops and ... Arno,s lead compound is AR-67, a novel, third-generation,camptothecin ...
... Supply Solutions(R),a focus area within SAFC(R), a ... today that the Company has launched a ... with their regulatory,requirement under the new European ... Authorization and restriction of Chemicals,(REACH) http://www.safcsupplysolutions.com/reach ...
... N.J., July 16 Johnson & Johnson Pharmaceutical,Research ... Food and Drug,Administration,s (FDA) Anti-Infective Drugs Advisory Committee ... for DORIBAX(TM) (doripenem for,injection) for the treatment of ... (VAP)., The committee voted that 500 mg ...
Cached Biology Technology:Arno Therapeutics Announces New Ticker Symbol 2SAFC Supply Solutions Launches REACH-Compliant Products and Support 2SAFC Supply Solutions Launches REACH-Compliant Products and Support 3FDA Advisory Committee Provides Opinion of DORIBAX(TM) for the Treatment of Hospital-Acquired Pneumonia 2FDA Advisory Committee Provides Opinion of DORIBAX(TM) for the Treatment of Hospital-Acquired Pneumonia 3FDA Advisory Committee Provides Opinion of DORIBAX(TM) for the Treatment of Hospital-Acquired Pneumonia 4
Anti-hamster Ig HRP detection kit...
The 50 ml Magnetic Separation Rack is designed to be used for small-scale separations using magnetic particles. ,Capacity: four 50 ml tubes. ,Magnets: Neodymium rare earth permanent magnets....
...
Highly efficient electroporation solution suitable for transfection of plasmid DNA, oligonucleotides and siRNA. Compatible with all common electroporators....
Biology Products: