Canadian Forest Service Publications

A Baculovirus of the European Skipper, Thymelicus lineola (Lepidoptera : Hesperiidae) 1977. Smirnoff, W.A.; Ackermann, H.W. Journal of Invertebrate Pathology 30: 224-231.

Year: 1977

Issued by: Laurentian Forestry Centre

Catalog ID: 16409

Language: English

Availability: PDF (request by e-mail)

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The nuclear polyhedrosis virus (NPV) of the European skipper, Thymelicus lineola, observed for the first time in Quebec in 1974, is highly pathogenic for its host. The infected larvae fill with pure polyhedra and die within 4 to 10 days. All tissues were infected except nerve cells and silk glands, but all nuclei of infected cells were filled with polyhedra. Biochemical analyses revealed that important metabolic disturbances occurred in infected larvae, such as serious modifications in the activity of certain enzymes. Polyhedra measured from 360 to 1330 nm in diameter and contained up to about 80 single-enveloped virions which measured to 270 x 58 nm. Abnormally short and abnormally long particles were also observed. Safety tests on mammals, fish, and beneficial insects revealed that this virus had no effects on these organisms, thus, it was recommanded for the control of T. lineola outbreaks.