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PATHOGENICITY OF VAIRIMORPHA NECATRIX (MICROSPORIDIA: NOSEMATIDAE) AGAINST OSTRINIA NUBILALIS (LEPIDOPTERA: PYRALIDAE)1

Published online by Cambridge University Press:  31 May 2012

Leslie C. Lewis ,
Robert D. Gunnarson  and
Joan E. Cossentine
Leslie C. Lewis
Affiliation:
United States Department of Agriculture, Agriculture Research Service, Corn Insects Research Unit, Ankeny, Iowa 50021 and Department of Entomology, Iowa State University, Ames, 50011.
Robert D. Gunnarson
Affiliation:
Department of Entomology, Iowa State University, Ames, Iowa 50011.
Joan E. Cossentine
Affiliation:
Department of Entomology, Iowa State University, Ames, Iowa 50011.
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Abstract

Vairimorpha necatrix (Kramer) readily infects and kills the European corn borer, Ostrinia nubilalis (Hübner), in the laboratory. The corn borer is either killed in the larval stage within a few days after infection by disruption of the midgut and septicemia or in the pupal stage by microsporidiosis. Insects that are not killed by V. necatrix have a reduced potential for pupation, emergence, and reproduction.

Résumé

Vairimorpha necatrix (Kramer) peut aisément infecter et causer la mort de la pyrale du maïs, Ostrinia nubilalis (Hübner), en laboratoire. La pyrale est tuée soit comme larve quelques jours après l'infection par la rupture du mésentère suivie d'une septicémie, soit au stade nymphal par microsporidiose. Les chenilles non tuées ont une chance réduite de parvenir jusqu'à la nymphose, l'émergence et la reproduction.

Type
Articles
Information
The Canadian Entomologist , Volume 114 , Issue 7 , July 1982 , pp. 599 - 603
Copyright
Copyright © Entomological Society of Canada 1982

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