Hostname: page-component-745bb68f8f-d8cs5 Total loading time: 0 Render date: 2025-01-10T23:39:42.175Z Has data issue: false hasContentIssue false
  • English
  • Français

SENSIBILITÉ DE LAMBDINA FISCELLARIA FISCELLARIA (LEPIDOPTERA: GEOMETRIDAE) À L’INFECTION PAR BACILLUS THURINGIENSIS BERLINER SEUL OU EN PRÉSENCE DE CHITINASE

Published online by Cambridge University Press:  31 May 2012

W. A. Smirnoff
W. A. Smirnoff
Affiliation:
Centre de recherches forestières des Laurentides, Service canadien des forêts, Québec, Québec
Get access Rights & Permissions [Opens in a new window]

Abstract

A Bacillus thuringiensis Berliner formulation, with and without chitinase, was tested on various instars of Lambdina fiscellaria fiscellaria Guén. reared under various temperature conditions. The results revealed that resistance to infection increased as larval development progressed and at lower temperatures. At a given temperature, 65% of third-instar larvae died after 5 days while only 10% of fifth-instar larvae died in the same period. Chitinase increased the efficiency of B. thuringiensis for all larval instars and at all temperatures.

Résumé

Une formulation de Bacillus thuringiensis Berliner avec et sans chitinase a été testée sur des larves de Lambdina fiscellaria fiscellaria Guén. de divers âges et élevées sous des conditions de température différentes. La résistance à l’infection augmente avec l’âge et aux basses températures. Ainsi, pour une température donnée, 65% des larves du IIIè âge succombent en 5 jours alors que seulement 10% des larves du Vè âge subissent le même sort. Par contre, dans tous les cas, l’addition de chitinase augmente l’efficacité du bacille.

Type
Articles
Information
The Canadian Entomologist , Volume 106 , Issue 4 , April 1974 , pp. 429 - 432
Copyright
Copyright © Entomological Society of Canada 1974

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Bibliographie

Morris, O. N. 1969. Susceptibility of several forest insects of British Columbia to commercially produced Bacillus thuringiensis II. Laboratory and field pathogenicity tests. J. invert. Path. 13: 285–295.CrossRefGoogle ScholarPubMed
Smirnoff, W. A., Juneau, A. and Valéro, J.. 1972. Results of experimental aerial sprayings of Bacillus thuringiensis against spruce budworm larvae. Forest Res. Lab. Bi-mon, Res. Notes 28: 1–2.Google Scholar