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Investigations on the nuclear polyhedrosis of teak defoliator, Hybhea puera (Cram) (Lep., Hyblaeidae)
Author(s) -
Ahmed S. I.
Publication year - 1995
Publication title -
journal of applied entomology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.795
H-Index - 60
eISSN - 1439-0418
pISSN - 0931-2048
DOI - 10.1111/j.1439-0418.1995.tb01299.x
Subject(s) - nuclear polyhedrosis virus , biology , infectivity , larva , incubation period , veterinary medicine , pupa , pest analysis , virus , toxicology , incubation , horticulture , virology , botany , medicine , biochemistry
Laboratory and field studies on the nuclear polyhedrosis of teak defoliator caterpillars, Hyhlaeu pueru (Cram) were carried out to understand the insect‐virus relationship. The typical symptoms of nuclear polyhedrosis were observed in both naturally and artificially infected caterpillars. The natural incidence of the disease observed was 35.6%. The number of polyhedral inclusion bodies ( PIBs ) per larva ranged from 1.12 times 10 to 2.37 times 10“ with an average of 1.973 times 10”.There was no correlation between the larval weight and number of PIBs estimated. The virulence of the NPV, measured in terms of total mortality and incubation period was reduced when PIBs of the virus were stored at room temperatur as a dry powder for a period of 6 years. The cross infectivity tests against the Achaea janata. Atteva fabriciella. Catopsilia crocale, Eligma narcissus, Euproctis fraterna and Eutectona machacralis proved negative. It was confirmed with the straining property of the polyhedra that the disease pathogen belonged to nuclear polyhedrosis virus (NPV)