Navigation Links
Study proves that 1 extinction leads to another
Date:8/14/2012

When a carnivore becomes extinct, other predatory species could soon follow, according to new research. Scientists have previously put forward this theory, but a University of Exeter team has now carried out the first experiment to prove it.

Published today (15 August 2012) in the Royal Society journal Biology Letters, the study shows how the demise of one carnivore species can indirectly cause another to become extinct. The University of Exeter team believes any extinction can create a ripple effect across a food web, with far-reaching consequences for many other animals.

The research adds weight to growing evidence that a 'single species' approach to conservation, for example in fisheries management, is misguided. Instead the focus needs to be holistic, encompassing species across an entire ecosystem.

The researchers bred two species of parasitic wasps, along with the two types of aphids on which each wasp exclusively feeds. They set up tanks with different combinations of the species and observed them for eight weeks. In tanks that did not include the first species of wasp, the second went extinct within a few generations. In tanks in which they co-existed, both wasp species thrived.

In the absence of the first wasp species, its prey grew in numbers. This threatened the other aphid, which the second wasp species attacks, eventually leading to its extinction. Both types of aphids feed on the same plants and there was not enough food for one to survive when the other thrived in the absence of its wasp predator.

Lead researcher Dr Frank van Veen of the University of Exeter's Centre for Ecology and Conservation said: "Our experiment provides the first proof of something that biologists have argued for a long time: predators can have indirect effects on each other, to the extent that when one species is lost, the loss of these indirect effects can lead to further extinctions. Although our study focused on
'/>"/>

Contact: Sarah Hoyle
s.hoyle@exeter.ac.uk
44-139-272-2062
University of Exeter
Source:Eurekalert  

Page: 1 2

Related biology news :

1. NIH backs Rice University study of delay in gene transcription networks
2. Study of fruit fly chromosomes improves understanding of evolution and fertility
3. Selfish DNA in animal mitochondria offers possible tool to study aging
4. UIC study examines exercise and weight loss for older adults with osteoarthritis
5. Eating grapes may help protect heart health in men with metabolic syndrome, new study suggests
6. Carnegie Mellon study shows skin-aging radicals age naturally formed particles in the air
7. New UC Santa Barbara-based project to study contaminants in urban water environment
8. Study reveals impact of historical domestic cattle hybridization with American bison
9. NYU College of Nursings Dr. Anastasi awarded $2.5 million from NIH to study IBS symptom management
10. New study helps predict impact of ocean acidification on shellfish
11. Iowa State, Ames Lab researchers invent new tool to study single biological molecules
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Study proves that 1 extinction leads to another
(Date:9/18/2014)... the ultimate form of camouflage: you don,t just blend ... is not as uncommon as you might think. Kathryn ... explains that the larval life stages of many marine ... the anatomy that most creatures cannot make transparent. Feller ... shield each individual eye unit with an opaque pigment ...
(Date:9/18/2014)... in the protective tentacles of host anemones, but new ... of kilometres across the open ocean. Although the process ... this is the first time that the high level ... , Dr Steve Simpson, Senior Lecturer in Marine Biology ... colleagues from the Australian Research Council Centre of Excellence ...
(Date:9/17/2014)... of the Santa Ana Wildfire Threat Index a ... the powerful, hot, dry Santa Ana wind, which can ... introduced Sept. 17 by the U.S. Forest Service, in ... , The index includes four classification levels ranging from ... fire agencies and other emergency responders, the media and ...
Breaking Biology News(10 mins):Transparent larvae hide opaque eyes behind reflections 2Expedition finds Nemo can travel great distances to connect populations 2Expedition finds Nemo can travel great distances to connect populations 3UCLA scientists play key role in developing new Santa Ana Wildfire Threat Index 2
... (MGH) researchers have developed a new type of miniature ... expand the application of minimally invasive diagnostic and therapeutic ... the team from the Wellman Center for Photomedicine at ... its use in a mouse model. , ...
... 4 cases of botulism following cosmetic injections to the ... unlicensed preparation that resulted in toxin levels up to ... a report in the November 22/29 issue of JAMA. ... by the toxins of the spore-forming bacterium Clostridium botulinum ...
... collaborating institutions report in this week's Science a ... 2.8 kilometers below Earth's surface. Think that's weird? ... water molecules to useable energy. , The ... the three-dimensional shell that encompasses all planetary life. ...
Cached Biology News:Three-dimensional, miniature endoscope opens new diagnostic possibilities 2Highly concentrated botulinum preparation for cosmetic injections can result in severe illness 2Highly concentrated botulinum preparation for cosmetic injections can result in severe illness 3Bacteria that use radiated water as food 2Bacteria that use radiated water as food 3
(Date:9/17/2014)... PARK, N.C. , Sept. 17, 2014  The ... presentation topics that will be featured at the conference, ... Conference Center on December 3 and 4, 2014. Researchers, ... are invited to hear the following: ... UC San Diego Skaggs School of Pharmacy ...
(Date:9/17/2014)... September 17, 2014 Shimadzu ... Liquid Chromatograph (2D-LC), which offers a powerful ... matrices. The system provides a new level ... which is beneficial to scientists analyzing pharmaceutical ... natural products. , Comprehensive 2D-LC combines two ...
(Date:9/17/2014)... (PRWEB) September 17, 2014 A ... occurring microorganisms such as bacteria, fungi, and algae ... water, methane, biomass, inorganic compounds, carbon dioxide, and ... expanding customer base and improved costs, biodegradable polymers ... economically viable alternative to conventional polymers. Primary factors ...
(Date:9/17/2014)... 2014 BioClinica®, Inc., a leading provider of ... three of its experts are speaking at the ... to be held September 28 to October 1 in ... also announced the innovative Compass technology, a ... trials acquired earlier this year, is up for the ...
Breaking Biology Technology:In Silico Drug Discovery Conference Announces Speakers and Topics 2In Silico Drug Discovery Conference Announces Speakers and Topics 3In Silico Drug Discovery Conference Announces Speakers and Topics 4In Silico Drug Discovery Conference Announces Speakers and Topics 5In Silico Drug Discovery Conference Announces Speakers and Topics 6In Silico Drug Discovery Conference Announces Speakers and Topics 7Shimadzu’s New Nexera-e Two Dimensional Comprehensive Liquid Chromatograph Empowers Laboratories to Separate Even the Most Complex Mixtures 2Growing Demand for Eco-Friendly Products Drives the Global Biodegradable Polymers Market, According to New Report by Global Industry Analysts, Inc. 2Growing Demand for Eco-Friendly Products Drives the Global Biodegradable Polymers Market, According to New Report by Global Industry Analysts, Inc. 3BioClinica to Present at 20th Annual SCDM Conference 2BioClinica to Present at 20th Annual SCDM Conference 3
... BioLife,s Proprietary, Next Generation, Biopreservation, Media Resulted in Increased Yield ... ... Cells, BOTHELL, Wash., Oct. 24 ... of,proprietary hypothermic storage and cryopreservation media products for,cells, tissues, and organs, ...
... Corp. (Other,OTC: IDTA.PK) released today the Jant Pharmacal ... and Oversees markets., - The strategic partnership ... continues, has resulted in increasing market,penetration over the ... sales,have increased significantly in the United States with ...
... Notice of Allowance of European Patent Application Covering Its Core ... Product Applications Protection Rights to All Cytokine ... ... GenOdyssee (GO), a biotechnology,company dedicated to the discovery and development of ...
Cached Biology Technology:BioLife Solutions HypoThermosol(R) Adopted by MicroIslet for Processing Pancreatic Islet Cells to Treat Diabetes 2BioLife Solutions HypoThermosol(R) Adopted by MicroIslet for Processing Pancreatic Islet Cells to Treat Diabetes 3BioLife Solutions HypoThermosol(R) Adopted by MicroIslet for Processing Pancreatic Islet Cells to Treat Diabetes 4International Drug & Explosive Detection Firm Identa Corp Releasing: Jant Pharmacal Corporation Reports Successful Market Penetration of the Accutest(R) IDenta Co-brand in the United States and Oversees 2International Drug & Explosive Detection Firm Identa Corp Releasing: Jant Pharmacal Corporation Reports Successful Market Penetration of the Accutest(R) IDenta Co-brand in the United States and Oversees 3International Drug & Explosive Detection Firm Identa Corp Releasing: Jant Pharmacal Corporation Reports Successful Market Penetration of the Accutest(R) IDenta Co-brand in the United States and Oversees 4GenOdyssee Receives Broad Product Applications Protection in EU for Founding Natural Evolution Technology 2GenOdyssee Receives Broad Product Applications Protection in EU for Founding Natural Evolution Technology 3GenOdyssee Receives Broad Product Applications Protection in EU for Founding Natural Evolution Technology 4
Request Info...
... DNase is a preparation of deoxyribonuclease ... DNA to produce 3-hydroxyl oligonucleotides. This ... applications where maintaining the integrity of ... qualified for use with the Core ...
... catalyzes the template-directed polymerization of nucleotides into ... Polymerase I possesses a 3?5 exonuclease activity ... rate during DNA replication, and also contains ... enzyme to replace nucleotides in the growing ...
RNase-Free DNase 50 l...
Biology Products: