Effects of host switching on gypsy moth (Lymantria dispar (L.)) under field conditions
نویسندگان
چکیده
منابع مشابه
A field release of genetically engineered gypsy moth (Lymantria dispar L.) nuclear polyhedrosis virus (LdNPV).
The gypsy moth (Lymantria dispar L.) nuclear polyhedrosis virus was genetically engineered for nonpersistence by removal of the gene coding for polyhedrin production and stabilized using a coocclusion process. A beta-galactosidase marker gene was inserted into the genetically engineered virus (LdGEV) so that infected larvae could be tested for its presence using a colorimetric assay. In 1993, L...
متن کاملCharacterization of Gypsy Moth (Lymantria dispar) Nuclear Polyhedrosis Virus.
Characterization of the proteins and nucleic acid of the gypsy moth nuclear polyhedrosis virus isolated in Ithaca, N.Y. (LdNPV-IT) is presented. A total of 29 viral structural proteins were identified by sodium dodecyl sulfate-polyacrylamide gel electrophoresis when the virus was isolated in the absence of alkaline protease activity. Fourteen surface envelope viral proteins were identified by l...
متن کاملTree Mortality in Mixed Pine-Hardwood Stands Defoliated by the European Gypsy Moth (Lymantria dispar L.)
Defoliation by the European gypsy moth (Lymantria dispar L.) and subsequent tree mortality have been well documented in the northeastern United States. In this study we evaluate tree mortality after initial defoliation in mixed pine-hardwood stands in the southeastern United States as the range of European gypsy moth expands. In 1993, 46 mature pine-oak and pine-sweetgum stands were selected on...
متن کاملCritical patch size generated by Allee effect in gypsy moth, Lymantria dispar (L.)
Allee effects are important dynamical mechanisms in small-density populations in which per capita population growth rate increases with density. When positive density dependence is sufficiently severe (a 'strong' Allee effect), a critical density arises below which populations do not persist. For spatially distributed populations subject to dispersal, theory predicts that the occupied area also...
متن کاملImpact of Temperature on Postdiapause and Diapause of the Asian Gypsy Moth, Lymantria dispar asiatica
Lymantria dispar asiatica (Vnukovskij) (Lepidoptera: Lymantridae) is one of three gypsy moth subspecies found in East Asia. Understanding the diapause and postdiapause phases of its eggs is important in characterizing its life cycle. The effects of different constant temperatures for different lengths of times on field-collected, postdiapause eggs were tested during the first year. In the secon...
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ژورنال
عنوان ژورنال: Oecologia
سال: 1994
ISSN: 0029-8549,1432-1939
DOI: 10.1007/bf00323144