Features of the Far Eastern Gypsy Moth (Lymantria dispar L.) Population Outbreak

Data characterizing the gypsy moth Lymantria dispar population in the eruptive phase in the Far East territory in 2008 are presented. The death of insects based on biotic factors (parasitoids and nuclear polyhedrosis virus) has been studied; the sex ratio, weights of male and female pupae, and femal...

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Bibliographic Details
Published in:Contemporary problems of ecology 2020-03, Vol.13 (2), p.172-179
Main Authors: Kurenshchikov, D. K., Martemyanov, V. V., Imranova, E. L.
Format: Article
Language:English
Subjects:
Biomedical and Life Sciences
Biotic factors
Butterflies & moths
Caterpillars
Ecology
Entomopathogenic fungi
Fecundity
Females
Insects
Life Sciences
Lymantria dispar
Parasitism
Parasitoids
Pest outbreaks
Population decline
Population density
Sex
Sex ratio
Viruses
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Summary:Data characterizing the gypsy moth Lymantria dispar population in the eruptive phase in the Far East territory in 2008 are presented. The death of insects based on biotic factors (parasitoids and nuclear polyhedrosis virus) has been studied; the sex ratio, weights of male and female pupae, and female fecundity have been determined. It is shown that nucleopolyhedrovirus is the main cause of death for caterpillars and inhibits the eruptive phase of abundance. It appears that no gypsy moth caterpillars die from entomopathogenic fungi. A strong decrease in the proportion of females is partially mediated by sex-specific parasitism and the moderate fecundity of females, and a high rate of virus-induced mortality is responsible for the fast decline in L. dispar population density in the Far East.
ISSN:1995-4255
1995-4263
DOI:10.1134/S1995425520020067