Full TGIF Record # 6438
Item 1 of 1
Web URL(s):http://journals.cambridge.org/download.php?file=%2FTCE%2FTCE108_11%2FS0008347X00038177a.pdf
    Last checked: 09/29/2015
    Requires: PDF Reader
    Access conditions: Item is within a limited-access website
Author(s):Smirnoff, W. A.; McNeil, J. N.; Valero, J. R.
Author Affiliation:Centre de Recherches Forestieres des Laurentides, Service Canadien des Forets, Sainte-Foy, Quebec, Canada
Title:Experiments on the control of the European skipper, Thymelicus lineola (Lepidoptera: Hesperiidae) by aerial application of a nuclear polyhedrosis virus
Source:Canadian Entomologist. Vol. 108, No. 11, 1976, p. 1221-1222.
Related Web URL:http://journals.cambridge.org/action/displayAbstract?fromPage=online&aid=8552472&fulltextType=RA&fileId=S0008347X00038177
    Last checked: 09/29/2015
    Notes: Abstract only
Keywords:TIC Keywords: Thymelicus lineola; Pathogenicity; Phleum pratense; Arthropoda; Biological control; Hesperiidae
Abstract/Contents:In laboratory tests of the infectivity of a nuclear polyhedrosis virus that occurred naturally in Thymelicus lineola (Ochs.) in Quebec in 1974, second- and fourth-instar larvae, reared individually on timothy (Phleum pratense) and treated with aqueous suspensions of the polyhedra at various concentrations, ceased feeding and changed from green to yellow in color 3-4 days later; 50 and, in brackets, 100% mortality occurred 7-12 (21-33) and 3-6 (12-15) days after treatment, respectively. The adipose tissue was first affected and at death most tissues were heavily infected. Larvae treated in the late fifth instar with an aqueous suspension of polyhedra at 5 X 104/ml developed normally, but the adults to which they gave rise were heavily infected. Some larvae reared from eggs collected from the naturally infected population and surface sterilised were infected with the virus. In a field test in which timothy heavily infested with larvae in the late third or early fourth instars was sprayed from the air with an aqueous suspension containing 5 X 106/ml polyhedra (and an adhesive) at an application rate of 18.7 l/ha, symptoms of viral infection appeared after 7 days and 50, 80 and 100% mortality occurred 15, 19 and 27 days, respectively, after treatment. Mortality in the untreated control area did not exceed 15%. Before treatment, there was 20% defoliation in both the experimental and control areas, but whereas at the end of the season defoliation reached only 50% in the sprayed area, in the untreated control area it was complete. For more effective control, treatment should be made when the larvae are in the second or early third instar.
Language:English
References:2
Geographic Terms:Canada
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Smirnoff, W. A., J. N. McNeil, and J. R. Valero. 1976. Experiments on the control of the European skipper, Thymelicus lineola (Lepidoptera: Hesperiidae) by aerial application of a nuclear polyhedrosis virus. Can. Entomol. 108(11):p. 1221-1222.
Fastlink to access this record outside TGIF: https://tic.msu.edu/tgif/flink?recno=6438
If there are problems with this record, send us feedback about record 6438.
Choices for finding the above item:
Web URL(s):
http://journals.cambridge.org/download.php?file=%2FTCE%2FTCE108_11%2FS0008347X00038177a.pdf
    Last checked: 09/29/2015
    Requires: PDF Reader
    Access conditions: Item is within a limited-access website
Find Item @ MSU
MSU catalog number: QL 461 .C35
Find from within TIC:
   Digitally in TIC by record number.
Request through your local library's inter-library loan service (bring or send a copy of this TGIF record)