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Transmission of Virus in Tent Caterpillar Populations1

Published online by Cambridge University Press:  31 May 2012

G. R. Stairs
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Abstract

The transmission of nuclear polyhedrosis virus in populations of the forest tent caterpillar, Malacosoma disstria (Hübner), was studied in Sudbury district, Ontario. Virus was transmitted from generation to generation by infected adults. Their progeny died from virus disease during the second and third larval instars. Adult flies of Sarcophaga aldrichi Parker, a dipterous parasite, were attracted to these dead, diseased larvae, became contaminated with virus, and spread the virus to foliage on which healthy larvae were feeding. The importance of these disseminating agents in the development of virus epizootics is discussed.

Résumé

Dans la région de Sudbury, Ontario, l'auteur étudia la contamination de la livrée des forêts, Malacosoma disstria (Hübner), par un virus à polyhédrose nucléaire. Le virus fut transmis d’une génération à l'autre par les insectes adultes eux-mêmes infectés, et la progéniture mourut au cours des deuxième et troisième stades larvaires. Ces larves mortes et contagieuses ont servi d’hôtes à un diptère parasite, le Sarcophaga aldrichi Parker, qui à son tour fut contaminé par le virus et le répandit sur le feuillage habité par des larves saines de la livrée des forêts. Concernant les virus épizootiques en général, l'auteur traite de leur agents de dissémination.

Type
Articles
Information
The Canadian Entomologist , Volume 98 , Issue 10 , October 1966 , pp. 1100 - 1104
Copyright
Copyright © Entomological Society of Canada 1966

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