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The effects of ivermectin in ingested cow-dung on the mortality and oviposition of the dung fly Neomyia cornicina (Diptera: Muscidae)

Published online by Cambridge University Press:  10 July 2009

Jane Gover  and
Les Strong
Jane Gover*
Affiliation:
School of Biological Sciences, University of Bristol, UK
Les Strong
Affiliation:
School of Biological Sciences, University of Bristol, UK
*
J. Cover, School of Biological Sciences, Woodland Road, University of Bristol, BS8 1UG, UK.
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Abstract

Adults of the dung fly Neomyia cornicina (Fabricius) (Diptera: Muscidae) were allowed to feed on cattle dung containing known quantities of ivermectin for a single period of 24 hours. The concentrations required to kill 50% and 95% of the population, within one week of feeding, were calculated to be 0.139 and 0.393 μg/g (wet weight), respectively. Ingested ivermectin was found to reduce significantly the proportion of females ovipositing and delay significantly the onset of first oviposition. For those females which did oviposit, there was no effect of ivermectin ingestion on the number of eggs laid, but the eggs of females fed dung containing ivermectin at 0.15 μg/g showed a significant reduction in percentage egg hatch.

Type
Research Article
Information
Bulletin of Entomological Research , Volume 85 , Issue 1 , March 1995 , pp. 53 - 57
Copyright
Copyright © Cambridge University Press 1995

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