HOME >> BIOLOGY >> NEWS
Fruit flies and global warming -- some like it hot

Researchers working in Australia have discovered ways in which fruit flies might react to extreme fluctuations in temperature. Short-term exposure to high heat stress ("heat hardening") has been known to have negative effects on Drosophila. But Loeschcke and Hoffmann discovered that it can have advantages too. Flies exposed to heat hardening were much more able to find their way to bait on very hot days than were the flies that were exposed to cooler temperatures, but the heat hardened flies did poorly on cool days.

Loeschcke and Hoffmann did field releases with colored flies exposed to different heat hardening treatments to get estimates of a fitness component in the wild. They used the likelihood to be caught at baits in field sites without natural resources as an estimate of fitness in Drosophila. The results showed that heat treated flies were much more often caught at the baits at very hot temperatures while control flies were more often caught at cooler temperatures, while there was an overall balance between negative and positive effects of the heat treatment at intermediate temperatures. As Volker Loeschcke puts it, "a small amount of heat exposure really toughens flies up against a heat wave, but they don't do quite as well when things are cooler." This means that heat hardening is really important in climates where there are hot days over 37 Celsius in summer, but there's not much benefit when it's always warm or always cool. Hardening is likely to become increasingly important for survival as global warming makes our weather more variable.


'"/>

Contact: Patricia Morse
pmorse@press.uchicago.edu
773-702-0446
University of Chicago Press Journals
26-Jan-2007


Page: 1

Related biology news :

1. Fruit fly gene from out of nowhere is discovered
2. Fruit fly research may clean up conventional impressions of biology
3. Fruit bats are not blind as a bat
4. Survival of the rarest: Fruit flies shed light on the evolution of behavior
5. Fruit fly gene research may shed light on human disease processes
6. Fruit flies may pave way to new treatments for age-related heart disease
7. Fruit fly dating game provides clues to our reproductive prowess
8. Fruit juice intake among preschool children not associated with weight
9. Fruit fly study identifies gene mutation that regulates sensitivity to alcohol
10. Fruit fly aggression studies have relevance to humans, animals
11. Psst! Coffee drinkers: Fruit flies have something to tell you about caffeine

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:1/7/2019)... , ... January 07, 2019 , ... ... and Artificial Intelligence solutions for precision health in oncology and other key therapeutic ... Morgan’s exclusive meeting of investors, entrepreneurs and executives spanning the entire healthcare landscape, ...
(Date:1/4/2019)... ... January 02, 2019 , ... ... noteworthy, as the life science tools and service supplier turned 40 in 2018 ... catalog. The catalog features not just part numbers like most catalogs, but rather, ...
(Date:12/27/2018)... ... December 27, 2018 , ... AxioMed ... its new Boston facility, and is now raising growth capital to ramp up ... market share against inferior ball and socket discs. The capital raise is targeted ...
Breaking Biology News(10 mins):
(Date:12/5/2018)... ... December 05, 2018 , ... STRmix™ – sophisticated forensic ... interpret – has been used to convict a Wyoming man of third-degree sexual assault, ... Laboratory used STRmix™ to test for DNA on the couch cushions on which the ...
(Date:11/29/2018)... , ... November 29, 2018 , ... RAGS, today announced ... by Kickstart Seed Fund, with participation from existing investor and board member Jeremy Andrus, ... Smith of Cotopaxi. The additional funding will enable the company to accelerate its growth ...
(Date:11/27/2018)... SANDY SPRINGS, Ga. (PRWEB) , ... November 27, 2018 , ... ... GA, can now visit Dr. Dan Myers’ practice for treatment, with or without a ... of cosmetic procedures and tools, including porcelain veneers, dental implants, bridges and custom crowns. ...
(Date:11/20/2018)... (PRWEB) , ... November 19, 2018 , ... ... pleased to announce the release of the Chinese translation of Best Practices: Recommendations ... 2018, is a practice-changing publication aimed at advancing the science of biobanking to ...
Breaking Biology Technology:
Cached News: