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Vol. 9, Special Issue 11 (2020)

Bio-agents (Pathogens, Parasitoid and Predators) of Gypsy moth Lymantria obfuscata Walker (Lepidoptera: Lymantriidae) and their mechanism of action and Natural mortality

Author(s):
Showket A Dar, Owais Mir, Sajad H Wani, Ejaz A Dar, Kounser Javeed, Sajad H Mir, Munazah Yaqoob, Abid Showkat, Ajaz A Kundoo and Rohie Hassan
Abstract:
The gypsy moth, Lymantria spp. (Lepidoptera: Lymantriidae), is one of the distinguished pest species feeding on forest trees and the caterpillars prefer oaks, birches, poplars and willows, causing huge defoliation, growth loss and tree mortality. Softwoods like hemlocks and pines are more likely to die after a single defoliation than hardwoods. A number of parasitoids have been released for classical biological control of the destructive this forest insect gypsy moth, however the pathogens especially Entomophaga maimaiga and the nucleo-polyhedrovirus have been found to give promising results. The parasitoids attacking on larval or pupal stages of gypsy moth have also been observed and evaluated by researchers. The infections due to Entomophaga maimaiga and LdMNPV can occur in all larval stages but are usually most profound in late instars. In Ladakh region a number of predators and parasitoids have been observed to feed on this pest. Generally, in Ladakh region infestation is huge and once enormous numbers of tiny caterpillars are present, a few become so entangled in their own webbing that they are unable to escape out of the web network and this results in their mortality in a natural way. During the whole infestation season (active larval season) almost 10-40 per cent population die because of this undesirable complexity in and around silken webs that had a considerable control over population build up.
Pages: 23-29  |  133 Views  4 Downloads
How to cite this article:
Showket A Dar, Owais Mir, Sajad H Wani, Ejaz A Dar, Kounser Javeed, Sajad H Mir, Munazah Yaqoob, Abid Showkat, Ajaz A Kundoo and Rohie Hassan. Bio-agents (Pathogens, Parasitoid and Predators) of Gypsy moth Lymantria obfuscata Walker (Lepidoptera: Lymantriidae) and their mechanism of action and Natural mortality . The Pharma Innovation Journal. 2020; 9(11S): 23-29.
The Pharma Innovation Journal