Featured Research

from universities, journals, and other organizations

New Study Explains Why Hotter Is Better For Insects

Date:
October 3, 2006
Source:
University of Chicago Press Journals
Summary:
Organisms have been able to adapt to environments ranging from cold polar oceans to hot thermal vents. However, University of Washington researchers have discovered a limit to the powerful forces of natural selection, at least when it comes to the adaptation of insects to cold temperatures.

Organisms have been able to adapt to environments ranging from cold polar oceans to hot thermal vents. However, University of Washington researchers have discovered a limit to the powerful forces of natural selection, at least when it comes to the adaptation of insects to cold temperatures.

Related Articles


"For thermodynamic reasons, cold temperatures present a challenging problem for ectothermic [cold-blooded] organisms because they slow biological processes, thus reducing rates of movement, feeding, and population growth," explains author M. R. Frazier.

Many researchers believe that biochemical adaptations can eventually compensate for the effects of low body temperatures, but Frazier and his colleague's recent thermodynamic model, forthcoming in the October issue of The American Naturalist, argues against such compensation.

To address this controversy, the researchers conducted a comparative analysis of published data on the thermal dependence of population growth rate for 65 insect species. They found that insects adapted to cold environments have slower maximum population growth rates than those adapted to warm environments, despite their long evolutionary history in such environments.

"At least with respect to insect population growth rates," says Frazier, "our data suggest that hotter is better. We see little evidence of evolutionary compensation."

This research suggests that adaptation to warmer or to colder temperature inevitably alters the population dynamics of insects, a result that has important consequences for agriculture, public health, and conservation.

Founded in 1867, The American Naturalist is one of the world's most renowned, peer-reviewed publications in ecology, evolution, and population and integrative biology research. AN emphasizes sophisticated methodologies and innovative theoretical syntheses--all in an effort to advance the knowledge of organic evolution and other broad biological principles.

M. R. Frazier, R.B. Huey, and D. Berrigan, "Thermodynamics constrains the evolution of insect population growth rates." The American Naturalist 167:10.


Story Source:

The above story is based on materials provided by University of Chicago Press Journals. Note: Materials may be edited for content and length.


Cite This Page:

University of Chicago Press Journals. "New Study Explains Why Hotter Is Better For Insects." ScienceDaily. ScienceDaily, 3 October 2006. <www.sciencedaily.com/releases/2006/10/061002214840.htm>.
University of Chicago Press Journals. (2006, October 3). New Study Explains Why Hotter Is Better For Insects. ScienceDaily. Retrieved November 28, 2014 from www.sciencedaily.com/releases/2006/10/061002214840.htm
University of Chicago Press Journals. "New Study Explains Why Hotter Is Better For Insects." ScienceDaily. www.sciencedaily.com/releases/2006/10/061002214840.htm (accessed November 28, 2014).

Share This


More From ScienceDaily



More Plants & Animals News

Friday, November 28, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Research on Bats Could Help Develop Drugs Against Ebola

Research on Bats Could Help Develop Drugs Against Ebola

AFP (Nov. 28, 2014) In Africa's only biosafety level 4 laboratory, scientists have been carrying out experiments on bats to understand how virus like Ebola are being transmitted, and how some of them resist to it. Duration: 01:18 Video provided by AFP
Powered by NewsLook.com
New Dinosaur Species Found in Museum Collection

New Dinosaur Species Found in Museum Collection

Reuters - Innovations Video Online (Nov. 27, 2014) A British palaeontologist has discovered a new species of dinosaur while studying fossils in a Canadian museum. Pentaceratops aquilonius was related to Triceratops and lived at the end of the Cretaceous Period, around 75 million years ago. Jim Drury has more. Video provided by Reuters
Powered by NewsLook.com
Tryptophan Isn't Making You Sleepy On Thanksgiving

Tryptophan Isn't Making You Sleepy On Thanksgiving

Newsy (Nov. 27, 2014) Tryptophan, a chemical found naturally in turkey meat, gets blamed for sleepiness after Thanksgiving meals. But science points to other culprits. Video provided by Newsy
Powered by NewsLook.com
Classic Hollywood Memorabilia Goes Under the Hammer

Classic Hollywood Memorabilia Goes Under the Hammer

Reuters - Entertainment Video Online (Nov. 26, 2014) The iconic piano from "Casablanca" and the Cowardly Lion suit from "The Wizard of Oz" fetch millions at auction. Sara Hemrajani reports. Video provided by Reuters
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:

Strange & Offbeat Stories


Plants & Animals

Earth & Climate

Fossils & Ruins

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