Navigation Links
Invasion of the cane toads
Date:2/27/2008

Why do some invasive species expand rapidly in a new environment while others do not" Scientists from the United States and Australia are beginning to make headway on this question after analyzing how fast cane toads invaded different regions of Australia.

Using over 70 years of data on toad presences collected since their introduction, researchers discovered that cane toads invaded different regions of Australia at dramatically divergent rates. These variable invasion rates appear to be e explained not only by environmental features that facilitate toad movement, but also by the evolution of higher movement rates. Natural selection might cause the evolution of increased movement rates in individuals at the edge of a species' range because the first individuals to arrive can monopolize the best habitats and exclude later arrivals and thus gain an advantage.

"The worrying message from this research is that if control efforts fail and an invasive species spreads across a sufficiently large area," says Mark Urban, "then it may be able to invade a broader region than expected because it has adapted to move across greater distances at the edge of its range."

He adds, "Understanding how environmental and genetic variation affects the movement rates of invading populations will generate better predictions about when an introduced species will arrive in a sensitive ecosystem. Our hope is that this information will help control the expansion of introduced species more effectively in the future."

This research has important implications for the global conservation of endangered species, many of which are threatened by the expanding ranges of introduced plants and animals.


'/>"/>

Contact: Patricia Morse
pmorse@press.uchicago.edu
773-702-0446
University of Chicago Press Journals
Source:Eurekalert  

Page: 1

Related biology news :

1. New map outlines risk of zebra mussel invasion
2. New national map shows relative risk for zebra and quagga mussel invasion
3. Fire, ice, and invasion
4. Invasion of the brain tumors
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Invasion of the cane toads
(Date:6/1/2016)... June 1, 2016 Favorable Government ... Administration and Criminal Identification to Boost Global Biometrics System ... released TechSci Research report, " Global Biometrics Market ... Forecast and Opportunities, 2011 - 2021", the global biometrics ... 2021, on account of growing security concerns across various ...
(Date:5/16/2016)...   EyeLock LLC , a market leader of ... an IoT Center of Excellence in Austin, ... of embedded iris biometric applications. EyeLock,s iris ... security with unmatched biometric accuracy, making it the most ... EyeLock,s platform uses video technology to deliver a fast ...
(Date:5/3/2016)... 3, 2016  Neurotechnology, a provider of high-precision ... Automated Biometric Identification System (ABIS) , a complete ... MegaMatcher ABIS can process multiple complex biometric transactions ... of fingerprint, face or iris biometrics. It leverages ... and MegaMatcher Accelerator , which have been ...
Breaking Biology News(10 mins):
(Date:6/24/2016)... ... June 24, 2016 , ... Researchers at the Universita Politecnica ... in people with peritoneal or pleural mesothelioma. Their findings are the subject of a ... , Diagnostic biomarkers are signposts in the blood, lung fluid or tissue of ...
(Date:6/23/2016)... Mass. , June 23, 2016   ... development of novel compounds designed to target cancer ... napabucasin, has been granted Orphan Drug Designation from ... the treatment of gastric cancer, including gastroesophageal junction ... stemness inhibitor designed to inhibit cancer stemness pathways ...
(Date:6/23/2016)... 2016 Houston Methodist Willowbrook Hospital has ... Association to serve as their official health care ... Willowbrook will provide sponsorship support, athletic training services, ... coaches, volunteers, athletes and families. "We ... Association and to bring Houston Methodist quality services ...
(Date:6/23/2016)... June, 23, 2016  The Biodesign Challenge (BDC), a ... ways to harness living systems and biotechnology, announced its ... in New York City . ... students, showcased projects at MoMA,s Celeste Bartos Theater during ... , MoMA,s senior curator of architecture and design, and ...
Breaking Biology Technology: