Featured Research

from universities, journals, and other organizations

Warmer is better: Invasive cane toads set to thrive under global warming

Date:
July 2, 2010
Source:
Society for Experimental Biology
Summary:
As global warming threatens many animal species with extinction, the cane toad is set to flourish with increasing temperature. This is a major cause for concern as the cane toad, once introduced to Australia as agricultural pest-control of the cane beetle, is an already highly invasive species and considered a pest in Australia.

As global warming threatens many animal species with extinction, the already destructive cane toad is set to flourish with increasing temperature, say Australian scientists.

"The negative effect of high temperature does not operate in Cane Toads, meaning that toads will do very well with human induced global warming," explains Professor Frank Seebacher from the University of Sydney.

Unlike fish and other cold-blooded creatures, whose oxygen transport system suffers at high temperatures, the cardiovascular system (heart and lungs) of Cane Toads performs more efficiently.

The researchers present their new findings at the Society for Experimental Biology Annual Conference in Prague on Friday 2nd July 2010.

When tested over an ambient temperature range of 20 -- 30 ˚C, Cane Toads acclimatised perfectly to increased temperatures and resting oxygen demands remained constant.

Furthermore, the efficiency of the oxygen transport system in the Cane Toad increased with increasing temperature, showing not only an ability to function over a broad thermal range but remarkably, a preference for higher temperatures.

This is in contrast to previous studies suggesting an increase in temperature results in a higher basic oxygen demand, coupled with decreased efficiency of the circulation system, leading to oxygen starvation.

"Warmer temperatures are advantageous and there is no indication that high temperatures limit oxygen delivery," explained Professor Seebacher.

The scientists say this positive effect may also apply to other anurans (the class of amphibians that includes frogs and toads), but more research needs to be done to find out.

"The impact of global warming doesn't have to be negative. Global average temperatures at present may in fact be cooler than many animals would like," explained Professor Seebacher.

"There will be winners and there will be losers but that needs to be judged on a species by species basis," added Dr Craig Franklin, co-author of the research.

The Cane Toad can adapt its physiology in response to a changing environment repeatedly and completely reversibly many times during its lifetime.

Originally introduced as agricultural pest-control due to its voracious appetite for the Cane Beetle, populations have now escalated out of control. The skin of the Cane Toad is toxic and deadly when ingested by other animals, many of them native predators.


Story Source:

The above story is based on materials provided by Society for Experimental Biology. Note: Materials may be edited for content and length.


Cite This Page:

Society for Experimental Biology. "Warmer is better: Invasive cane toads set to thrive under global warming." ScienceDaily. ScienceDaily, 2 July 2010. <www.sciencedaily.com/releases/2010/07/100701204356.htm>.
Society for Experimental Biology. (2010, July 2). Warmer is better: Invasive cane toads set to thrive under global warming. ScienceDaily. Retrieved April 23, 2014 from www.sciencedaily.com/releases/2010/07/100701204356.htm
Society for Experimental Biology. "Warmer is better: Invasive cane toads set to thrive under global warming." ScienceDaily. www.sciencedaily.com/releases/2010/07/100701204356.htm (accessed April 23, 2014).

Share This



More Earth & Climate News

Wednesday, April 23, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

California Drought Is Good News for Gold Prospectors

California Drought Is Good News for Gold Prospectors

AFP (Apr. 22, 2014) — For months California has suffered from a historic drought. The lack of water is worrying for farmers and ranchers, but for gold diggers it’s a stroke of good fortune. With water levels low, normally inaccessible areas are exposed. Duration: 01:57 Video provided by AFP
Powered by NewsLook.com
Raw: MN Lakes Still Frozen Before Fishing Opener

Raw: MN Lakes Still Frozen Before Fishing Opener

AP (Apr. 22, 2014) — With only three weeks until Minnesota's fishing opener, many are wondering if the ice will be gone. Some of the Northland lakes are still covered by up to three feet of ice, causing concern that just like last year, the lakes won't be ready. (April 22) Video provided by AP
Powered by NewsLook.com
Is North Korea Planning Nuclear Test #4?

Is North Korea Planning Nuclear Test #4?

Newsy (Apr. 22, 2014) — South Korean officials say North Korea is preparing to conduct another nuclear test, but is Pyongyang just bluffing this time? Video provided by Newsy
Powered by NewsLook.com
Nasa Gives You An Excuse to Post a Selfie on Earth Day

Nasa Gives You An Excuse to Post a Selfie on Earth Day

TheStreet (Apr. 22, 2014) — NASA is inviting all social media users to take a selfie of themselves alongside nature and to post it to Twitter, Facebook, Flickr, Instagram, or Google Plus with the hashtag #globalselfie. NASA's goal is to crowd-source a collection of snapshots of the earth, ground-up, that will be used to create one "unique mosaic of the Blue Marble." This image will be available to all in May. Since this is probably one of the few times posting a selfie to Twitter won't be embarrassing, we suggest you give it a go for a good cause. Video provided by TheStreet
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
 
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:  

Breaking News:
from the past week

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:  

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile iPhone Android Web
Follow Facebook Twitter Google+
Subscribe RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins