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A laboratory investigation of Paulinia acuminata (DeGeer) (Orthoptera: Acrididae) as a biological control agent for Salvinia molesta

Published online by Cambridge University Press:  10 July 2009

I. F. Chisholm
I. F. Chisholm
Affiliation:
University of Rhodesia, P.O. Box M.P. 167, Mount Pleasant, Salisbury, Rhodesia.
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Abstract

The feeding rate of nymphs of Paulinia acuminata (Deg.) on Salvinia molesta was studied in the laboratory using single nymphs on different numbers of Salvinia leaves. Each successive instar ate more plant tissue, but at population densities likely to occur in nature it was unlikely that consumption rate could match the natural Salvinia growth rate. The controlling effect of Paulinia on Salvinia in Lake Kariba, Rhodesia, may therefore be negligible.

Type
Original Articles
Information
Bulletin of Entomological Research , Volume 69 , Issue 1 , April 1979 , pp. 111 - 114
Copyright
Copyright © Cambridge University Press 1979

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References

Mitchell, D. S. (1970). Autecological studies of Salvinia auriculata Aubl.—Ph.D. thesis, Univ. London.Google Scholar
Thomas, P. A. (1974). Investigations into the biology of Paulinia acuminata (DeGeer) Orthoptera: Acrididae) with particular reference to the biological control of Salvinia auriculata.—M. Phil, thesis, Univ. London.Google Scholar