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Study finds that long-distance migration shapes butterfly wings
Date:2/11/2010

ies in the world, face a number of threats, to the point that monarch migration is considered to be an "endangered phenomenon." Davis has published previous research indicating that female monarch butterflies are on a 30-year decline in the eastern U.S., a troubling pattern that paints a dire picture for population recruitment. Furthermore, monarchs from this population are prone to periodic population crashes from storms at the Mexican overwintering site. Although monarchs worldwide are not threatened, Altizer said, those with the larger wingspan are. "Our study shows that we would lose an evolutionarily unique population if the migration of eastern monarchs were to unravel," she said.


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Contact: Sandi Martin
smartin@warnell.uga.edu
706-542-2079
University of Georgia
Source:Eurekalert

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