Navigation Links
Hind wings help butterflies make swift turns to evade predators, study finds
Date:1/8/2009

ITHACA, N.Y. New tires allow race cars to take tight turns at high speeds. Hind wings give moths and butterflies similar advantages: They are not necessary for basic flight but help these creatures take tight turns to evade predators.

"To escape a predator, you don't have to be fast, you just have to be more erratic," said Tom Eisner, a world authority on animal behavior, ecology and evolution and the Jacob Gould Schurman Professor Emeritus of Chemical Ecology at Cornell. Eisner is co-author of a study on butterfly wings recently published in the Proceedings of the National Academy of Sciences (105: 43).

The study proposes that in the course of evolution, the ability of butterflies to evade predators became linked with bright coloring, as an added protection. In evolutionary terms, gaudy colors are usually a sign to such predators as birds that a prey species has a protective quality, such as a bad taste or great agility, and that chasing them isn't worth the energy. Anyone who has tried to net a colorful butterfly knows they are hard to catch, but this is the first study to show that a butterfly's hind wings are responsible for making them evasive.

Eisner and the paper's lead author, Benjamin Jantzen, (M.S. physics '02), a doctoral student in philosophy of science at Carnegie Mellon University, clipped off the hind wings of butterflies and then filmed their flight using two cameras to get three-dimensional views of their flight trajectories; then they analyzed and plotted on a computer the insects' flight velocity, acceleration, how fast they changed direction, the curvature of their path and more.

They found that clipping the back wings did not affect basic flight, but "we were able to show that removing the hind wings cut their turning acceleration in half," said Jantzen. The butterfly's hind wings scoop air and provide extra force to quickly turn when chased.

Eisner added that some butterflies have other qua
'/>"/>

Contact: Blaine Friedlander
bpf2@cornell.edu
607-254-8093
Cornell University Communications
Source:Eurekalert

Page: 1 2

Related biology news :

1. Using nanotubes to detect and repair cracks in aircraft wings, other structures
2. New Delft material concept for aircraft wings could save billions
3. Monarch butterflies help explain why parasites harm hosts
4. Smell-wars between butterflies and ants
5. As Andean glacier retreats, tiny life forms swiftly move in, CU-Boulder study shows
6. How chromosomes meet in the dark -- Switch that turns on X chromosome matchmaking
7. Scripps research scientists identify blood component that turns bacteria virulent
8. TORC at UH turns to virtual world of Second Life for new study
9. A molecular switch turns on the flame in natures blowtorch
10. UC Davis researchers discover how HIV turns food-poisoning into lethal infection
11. Unfavorable ocean conditions likely cause of low 2007 salmon returns along West Coast
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:7/9/2014)... of a sparrow-sized fossil from China challenges the commonly ... that gained the ability to fly. The birdlike fossil ... much rather the remains of a tiny tree-climbing animal ... the Dinosaur Museum in Blanding, Utah, and Alan Feduccia ... in Springer,s Journal of Ornithology . , The ...
(Date:7/9/2014)... results accrue. To completely and systematically archive this ... fact, researchers in the life sciences spend a ... an online survey of 70 people working in ... Applied Information Technology FIT in Sankt Augustin. Many ... centralized or structured approach to data collection in ...
(Date:7/9/2014)... in their blood are more likely to survive the disease, ... of vitamin D have half the risk of dying compared ... The study is the first to correlate total blood levels ... which includes that produced after exposure to sunlight and ... survival prospects. , The University of Edinburgh team tested ...
Breaking Biology News(10 mins):Researchers declassify dinosaurs as being the great-great-grandparents of birds 2Managing the data jungle 2Managing the data jungle 3
... addictive substance in cigarette smoke, contributes to smokers, higher ... attacks, according to research to be presented Sunday, Dec. ... Meeting in New Orleans. These findings suggest ... steam without the carcinogenic agents of tobacco smoke, may ...
... An experimental drug that targets macrophages, a type of ... tumor glioblastoma multiforme decreased the cancer,s growth and extended ... report on Tuesday Dec. 17, at the American Society ... The rates of apoptosis, or programmed cell death, ...
... A cross-sectional study by investigators from Tokyo University has ... factor against sarcopenia and effective in maintaining muscle strength ... the ageing process, resulting in loss of skeletal muscle ... The multiple adverse health outcomes include physical disability, poor ...
Cached Biology News:Nicotine drives cell invasion that contributes to plaque formation in coronary arteries 2Blocking tumor-associated macrophages decreased glioblastoma's growth & extended survival in mice 2
(Date:1/15/2014)... 15, 2014   Niagara Thermal Products is proud ... BioBlower Technologies LLC ("B3") as the critical thermal component ... from the Army Corps of Engineers.  B3 has developed ... biological contaminants and destroys VOCs and other chemical pollutants, ...
(Date:1/15/2014)... Toronto, Canada (PRWEB) January 15, 2014 ... perspectives on nonclinical and clinical safety assessment in biosimilars. ... a path for biosimilar drug development, however the complex ... regards to quality, safety and efficacy extremely challenging. Based ...
(Date:1/15/2014)... 15, 2014 DTS Language Services, Inc ... Web Portal for Life Science organizations who need document translations. ... subject matter of their documents in advance with a selection ... time-to-delivery of translations, often a critical factor in clinical and ...
(Date:1/14/2014)... Date: Friday, April 11, 2014 , Time: 6 p.m. – ... Warrington, Pa. , Details: The Hepatitis B Foundation, ... cure for hepatitis B and improving the quality of life ... on Friday, April 11 at Warrington Country Club in Warrington, ...
Breaking Biology Technology:Niagara Thermal Products LLC Selected as Critical Supplier for Buffalo BioBlower Air Purification Systems 2Xtalks Life Sciences Webinar Examines Safety Assessment of Biosimilars 2DTS Improves Efficiency for Life Science Document Translations 2Hepatitis B Foundation to Host Annual Crystal Ball Gala 2
... Nets to Prevent Serious Health Hazards ... Associated with Diethylene ... Pharmacopeial (USP),Convention today announced a revised Glycerin monograph in ... United States. The,revision strengthens safety nets to prevent serious ...
... The following was issued,today by the Greater Baltimore ... CEO, Greater Baltimore Committee, 140 company owners, executives ... The third annual Greater Baltimore Region Bioscience Awards, ... / Breakfast & Registration, 8:45 - 9:30 a.m. ...
... March 17 Mercury Therapeutics,Inc. (MTI), a ... protein,kinase targeted drugs, announces that it has ... advise on its strategic and partnering,opportunities, with ... shareholders., This appointment follows a significant ...
Cached Biology Technology:USP Announces Revised Glycerin Monograph 2USP Announces Revised Glycerin Monograph 3Greater Baltimore Committee to Announce Winners of Third Baltimore Region Bioscience Awards at Ceremonies on March 18 2Mercury Therapeutics, Inc: Marquant Appointed to Advise on Strategic and Partnering Opportunities 2Mercury Therapeutics, Inc: Marquant Appointed to Advise on Strategic and Partnering Opportunities 3
... UltraPure Agarose and SYBR Safe DNA Gel Stain ... Saves money versus buying these same products separately ... alternative to ethidium bromide ... Agarose resolves DNA and RNA fragments from 100 bp ...
Anti-WT-1 Liquid. In 10 μM PBS, 0.2 % BSA, pH 7.6. Recognizes the ~47-55 kDa Wilm's tumor protein in Wilm's tumor tissue. ...
... uses continuous chemical suppression and thermally stabilized ... accurate determinations of common anions and cations ... quick to equilibrate, and fully automated with ... you achieve maximum sample throughput at minimum ...
... siRNA applications, contains magnetic nanoparticles (MagTag) which ... of interest. Exploiting magnetic force the full ... towards and delivered into the target cells ... be used for adherent cells; for suspension ...
Biology Products: