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The Symptoms and Histopathology of Poisoning by Maneb in Oncopeltus fasciatus (Dallas)1,2

Published online by Cambridge University Press:  31 May 2012

R. D. McMullen
R. D. McMullen
Affiliation:
Research Station, Research Branch, Canada Department of Agriculture, Summerland, B.C.
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Abstract

Maneb (manganous ethylene bisdithiocarhamate) applied topically to Oncopeltus fasciatus nymphs causes death after 7 to 10 days. The gross symptoms of intoxication, histopathology and effect on oxygen consumption are described. Activities such as feeding and walking are slightly reduced after 24 hours and completely inhibited after 3 to 4 days. The tissues most severely affected by the treatment are the secretory cells of the mid-gut epithelium and the cells of the Malpighian tubules. These at first show extreme vacuolization, reduction of the size of cell nuclei and finally cytolysis. Oxygen consumption in vivo is reduced by the treatment.

Type
Articles
Information
The Canadian Entomologist , Volume 97 , Issue 11 , November 1965 , pp. 1200 - 1208
Copyright
Copyright © Entomological Society of Canada 1965

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