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Survival and reproduction of Euoniticellus intermedius(Coleoptera: Scarabaeidae) in dung following application of cypermethrin and flumethrin pour-ons to cattle

Published online by Cambridge University Press:  09 March 2007

K. Krüger*
Affiliation:
Department of Zoology and Entomology, University of Pretoria, Pretoria, South Africa
O.M. Lukhele
Affiliation:
Department of Zoology and Entomology, University of Pretoria, Pretoria, South Africa
C.H. Scholtz
Affiliation:
Department of Zoology and Entomology, University of Pretoria, Pretoria, South Africa
*
*ARC–Plant Protection Research Institute, Private Bag X134, Pretoria 0001, South Africa. Fax: + 27 12 329 3278 E-mail: rietkkr@plant2.agric.za

Abstract

Cattle were treated with cypermethrin and flumethrin pour-ons to determine possible adverse effects of residues in dung on the survival, fecundity and fertility of Euoniticellus intermedius (Reiche). Dung from both cypermethrin- and flumethrin-treated cattle was collected 1, 2, 3, 5, 7, 14, 21 and 28 days after treatment, with an untreated control for each. Mortality of adult E. intermedius exposed to dung collected from cypermethrin-treated cattle two to seven days after treatment ranged between 80% and 100%. Cypermethrin had no effect on adult and immature survival or on fecundity and fertility of E. intermediusexposed to dung collected 1, 14, 21 and 28 days after treatment. Dung collected from flumethrin-treated cattle had no apparent effect on adult survival, egg production, immature survival, adult emergence, fecundity and fertility of E. intermedius, except at seven days after treatment, when fewer brood balls were produced and consequently fewer adults emerged from dung from treated animals compared with the control.

Type
Research Article
Copyright
Copyright © Cambridge University Press 1999

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