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Darker wings for monarch butterflies mean better flight

Date:
July 25, 2012
Source:
Public Library of Science
Summary:
For monarch butterflies, redder wings are correlated with better flight performance, according to new research.

Forewings from three monarchs that span the range of hue scores (values above wings) in this study. Magnified sections show close-up of scales from each individual.
Credit: Andrew K. Davis, Jean Chi, Catherine Bradley, Sonia Altizer. The Redder the Better: Wing Color Predicts Flight Performance in Monarch Butterflies. PLoS ONE, 2012; 7 (7): e41323 DOI: 10.1371/journal.pone.0041323

For monarch butterflies, redder wings are correlated with better flight performance, according to research published July 25 in the open access journal PLoS ONE.

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Previous work has shown that monarch coloring is intended to warn their predators about their bitter taste and toxicity, and that migratory butterflies are darker colored than non-migratory ones, suggesting an association between darker color and increased fitness.

The current work, led by Andrew Davis of the University of Georgia, provides further evidence for this association. The researchers tested 121 captive monarchs in an apparatus called a tethered flight mill, where they can quantify butterfly flight speed, duration, and distance, and found that those with darker orange wings overall flew longer distances than those with lighter wings.

"Butterfly researchers don't often look closely at color variation between individuals of the same species. The results of this project will pave the way for a new line of inquiry into the significance of butterfly wing color."


Story Source:

The above story is based on materials provided by Public Library of Science. Note: Materials may be edited for content and length.


Journal Reference:

  1. Andrew K. Davis, Jean Chi, Catherine Bradley, Sonia Altizer. The Redder the Better: Wing Color Predicts Flight Performance in Monarch Butterflies. PLoS ONE, 2012; 7 (7): e41323 DOI: 10.1371/journal.pone.0041323

Cite This Page:

Public Library of Science. "Darker wings for monarch butterflies mean better flight." ScienceDaily. ScienceDaily, 25 July 2012. <www.sciencedaily.com/releases/2012/07/120725220331.htm>.
Public Library of Science. (2012, July 25). Darker wings for monarch butterflies mean better flight. ScienceDaily. Retrieved December 22, 2014 from www.sciencedaily.com/releases/2012/07/120725220331.htm
Public Library of Science. "Darker wings for monarch butterflies mean better flight." ScienceDaily. www.sciencedaily.com/releases/2012/07/120725220331.htm (accessed December 22, 2014).

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