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:8/1/2018)... ... 01, 2018 , ... RURO, Inc., a company known for ... is the software framework that all of RURO’s products are built from, and ... and the future of RURO’s laboratory software portfolio. , To accommodate the needs ...
(Date:7/31/2018)... DIEGO (PRWEB) , ... July 31, 2018 , ... ACEA ... analysis. The company has just introduced the xCELLigence RTCA S16, which the ... and monitored via an external computer, the S16can be placed in any standard CO2 ...
(Date:7/30/2018)... ... July 30, 2018 , ... TC Slade, ... impact of biofield energy healing treated Vitamin D3 on the strength and health ...     Over 260% increase in ALP, a bone-specific enzyme ,     Over 240% ...
Breaking Biology News(10 mins):
(Date:7/31/2018)... ... July 31, 2018 , ... Leading regenerative veterinary ... for extracting and using adipose tissue-derived stem cells to treat or prevent inflammation ... this patent covers Canada specifically, VetStem has been issued similar patents that cover ...
(Date:7/25/2018)... ... July 25, 2018 , ... Eileen ... impact of a biofield energy treated nutraceutical to improve skin health parameters including ... for skin health and reported the following results:,     More ...
(Date:7/25/2018)... ... July 25, 2018 , ... John McDonald, ... the board of the Indiana India Business Council (IIBC), an advocacy group to ... the current board of directors, McDonald joins an impressive roster of local and ...
(Date:7/22/2018)... , ... July 19, 2018 , ... ... driven channel professional has joined their team. With more than ten years of ... Adam will deliver his expertise as CallTower’s Channel Director for the Southwest and ...
Breaking Biology Technology:
Cached News: