You are not currently logged in.
Access your personal account or get JSTOR access through your library or other institution:
If You Use a Screen ReaderThis content is available through Read Online (Free) program, which relies on page scans. Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
"Nonadaptive" Hilltopping Behavior in Male Checkerspot Butterflies (Euphydryas editha)
Paul R. Ehrlich and Darryl Wheye
The American Naturalist
Vol. 127, No. 4 (Apr., 1986), pp. 477-483
Stable URL: http://www.jstor.org/stable/2461577
Page Count: 7
Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
Preview not available
A fluorescent-dye technique permitted the mating success of male checkerspot butterflies aggregating on a ridge to be compared with that of males on the slope below. Unexpectedly, the males on the ridge had about one-half the mating success of those on the slope. We suggest that formation of this and some other hilltopping aggregations is a "nonadaptive" consequence of otherwise adaptive behavior.
The American Naturalist © 1986 The University of Chicago Press