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Science 15 April 1983:
Vol. 220. no. 4594, pp. 310 - 312
DOI: 10.1126/science.220.4594.310
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Articles

Enchenopa binotata Complex: Sympatric Speciation?

T. K. WOOD 1 and S. I. GUTTMAN 2

1 Department of Entomology and Applied Ecology and School of Life Sciences, University of Delaware, Newark 19711
2 Department of Zoology, Miami University, Oxford, Ohio 45056

Enchenopa binotata is a complex of six treehopper species that have diverged along host plant lines. When females were forced to oviposit on "adopted" host plants, few eggs were deposited. Fewer eggs hatched on "adopted" hosts and those that did hatch did so in response to the phenology of the "adopted" host. Mortality of nymphs on "adopted" hosts was substantially higher than on native hosts. These and other data support a sympatric model of speciation through shifts in host plants.

Submitted on July 12, 1982
Revised on December 15, 1982


THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:
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Evidence that female preferences have shaped male signal evolution in a clade of specialized plant-feeding insects.
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Science. ISSN 0036-8075 (print), 1095-9203 (online)