Good and bad news for migrating monarchs
Chemical tags in monarch wings are giving scientists a way to trace butterflies from their wintering sites in Mexico back to their birthplaces across eastern North America.
Wassenaar, L.I., and K.A. Hobson. 1998. Natal origins of migratory monarch butterflies at wintering colonies in Mexico: New isotopic evidence. Proceedings of the National Academy of Sciences 95(Dec. 22):15436.
Further Readings:The University of Kansas and the University of Minnesota's Monarch Watch Web site can be found at http://www.monarchwatch.org/.
Keith A. Hobson
115 Perimeter Road
Saskatoon, SK S7N 0X4
Leonard I. Wassenaar
11 Innovation Boulevard
Saskatoon, SK S7N 3H5
From Science News, Vol. 155, No. 1, January 2, 1999, p. 5. Copyright © 1999 by Science Service.
copyright 1999 ScienceService