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Dispersal of Three Species of Coccinellids in Corn Fields1

Published online by Cambridge University Press:  31 May 2012

M. A. Ewert  and
H. C. Chiang
M. A. Ewert
Affiliation:
Department of Entomology, Fisheries, and Wildlife, University of Minnesota, St. Paul
H. C. Chiang
Affiliation:
Department of Entomology, Fisheries, and Wildlife, University of Minnesota, St. Paul
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Abstract

To determine the dispersal of coccinellids in corn fields, two methods were used: sticky traps were placed at different elevations to catch the beetles in flight, and a sucrose solution was sprayed on the upper or lower portions of plants to concentrate beetles.

The results show that the distribution on the plants is closely related to the manner of dispersal of the species, the Hippodamia species fly at a greater height than C. maculata, and H. convergens and H. 13-punctata are, respectively, about 15 and 9 times as mobile as C. maculata. The results generally support the idea that entomophagous coccinellids are more nomadic than their phytophagous relatives.

Type
Articles
Information
The Canadian Entomologist , Volume 98 , Issue 9 , September 1966 , pp. 999 - 1003
Copyright
Copyright © Entomological Society of Canada 1966

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