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:2/27/2017)... 2017   Strategic Cyber Ventures , the industry,s ... a $3.5 million investment in  Polarity , the first ... is DC based and is led by cybersecurity veterans ... Ron Gula , also a longtime cybersecurity veteran ... this series A round of funding. This new funding ...
(Date:2/21/2017)... ARMONK, N.Y. and PORTLAND, Ore. ... IBM ) and the Avamere Family of Companies (Avamere ... Care) today announced a six-month research study that will ... caregivers improve eldercare at senior living and health centers. ... facilities, Avamere hopes to gain insights into physical and ...
(Date:2/13/2017)... 2017  RSA Conference -- RSA, a Dell Technologies ... to enhance fraud detection and investigation across digital ... Fraud & Risk Intelligence Suite. The new platform ... insights from internal and external sources as well ... customers from targeted cybercrime attacks. "Fraudsters ...
Breaking Biology News(10 mins):
(Date:3/24/2017)... 2017 On Thursday, March 23, ... 5,817.69, down 0.07%; the Dow Jones Industrial Average edged ... 500 closed at 2,345.96, marginally dropping 0.11%. US markets ... green, 4 sectors finished in red, and 1 sector ... initiated reports coverage on the following Biotechnology equities: BioDelivery ...
(Date:3/24/2017)... Agenus Inc. (NASDAQ: AGEN), an immuno-oncology company ... vaccines, today announced participation at the following conferences: ... and Maidstone Life Sciences conference "Cancer Immunotherapy Conference" at ... New York, NY . Agenus will participate in ... am: Robert B. Stein , M.D., Ph.D., President, ...
(Date:3/23/2017)... , ... March 23, 2017 , ... Lajollacooks4u is proud to announce it has become ... hosted corporate cooking challenges for companies around the world, such as Illumina, HP and Qualcomm, ... the reason for its increasing popularity is due to its new team building format, a ...
(Date:3/23/2017)... 2017  Northwest Biotherapeutics (OTCQB: NWBO) (NW Bio), ... for solid tumor cancers, today announced that yesterday ... announced last Friday, March 17, 2017. ... securities totaling 28,843,692 shares, comprised of 18,843,692 common ... of Class C Warrants pre-funded at the closing ...
Breaking Biology Technology: