Hostname: page-component-84b7d79bbc-fnpn6 Total loading time: 0 Render date: 2024-07-25T08:57:46.803Z Has data issue: false hasContentIssue false
  • English
  • Français

NATURAL OCCURRENCE OF VIRUSES OF THE CABBAGE LOOPER IN FIELD PLOTS

Published online by Cambridge University Press:  31 May 2012

R. P. Jaques
R. P. Jaques
Affiliation:
Research Station, Canada Department of Agriculture, Harrow, Ontario
Get access Rights & Permissions [Opens in a new window]

Abstract

Studies on non-treated plots at Harrow, Ontario, in 1967 and 1968 and at Kentville, Nova Scotia, from 1963 to 1968 inclusive showed that residues of viruses of the cabbage looper, Trichoplusia ni (Hübner), found in soil were related qualitatively and quantitatively to the virus residues on leaves of cruciferous plants grown in the plots and to mortality by viruses in the host populations. At Harrow where the cabbage looper is common and where virus diseases occur naturally in field populations, the viruses that occurred in the populations of the host built up in soil as the season progressed. At Kentville where the host is rare, virus was rarely found in soil or on foliage. The typical nuclear-polyhedrosis virus, an atypical nuclear-polyhedrosis virus that formed abnormally large polyhedra, and a granulosis virus were found at Harrow, with the typical nuclear-polyhedrosis virus predominating. Only the typical nuclear-polyhedrosis virus was detected at Kentville.

Type
Articles
Information
The Canadian Entomologist , Volume 102 , Issue 1 , January 1970 , pp. 36 - 41
Copyright
Copyright © Entomological Society of Canada 1970

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

Drake, L. E., and McEwen, F. L.. 1959. Pathology of a nuclear polyhedrosis of the cabbage looper, Trichoplusia ni (Hübner). J. Insect Path. 1: 281–293.Google Scholar
Harcourt, D. G., and Cass, L. M.. 1968. Persistence of a granulosis virus of Pieris rapae in soil. J. Invert. Path. 11: 142–143.Google Scholar
Heimpel, A. M., and Adams, J. R.. 1966. A new nuclear polyhedrosis of the cabbage looper, Trichoplusia ni. J. Invert. Path. 8: 340–346.CrossRefGoogle Scholar
Jaques, R. P. 1967 a. The persistence of a nuclear-polyhedrosis virus in the habitat of the host insect, Trichoplusia ni. I. Polyhedra deposited on foliage. Can. Ent. 99: 785–794.Google Scholar
Jaques, R. P. 1967 b. The persistence of a nuclear-polyhedrosis virus in the habitat of the host insect, Trichoplusia ni. II. Polyhedra in soil. Can. Ent. 99: 820–829.CrossRefGoogle Scholar
Jaques, R. P., and Huston, F.. 1967. Virus of the cabbage looper in soil. Bull. ent. Soc. Am. 13: 152 and 194.Google Scholar
Lowe, R. E., and Paschke, J. D.. 1968. Simultaneous infection with the nucleopolyhedrosis and granulosis viruses of Trichoplusia ni. J. Invert. Path. 12: 86–92.Google Scholar
Mathad, S. B., Splittstoesser, C. M., and McEwen, F. L.. 1968. Histopathology of the cabbage looper, Trichoplusia ni, infected with a nuclear polyhedrosis. J. Invert. Path. 11: 456–464.CrossRefGoogle Scholar