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Studies on Larval mortality: Diseases, Pest and Predator menace in Outdoor and Indoor reared Tasar Silkworm, Antheraea mylitta Drury (Daba TV)

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Author Affiliations

  • 1Department of Zoology, Kakatiya University, Warangal-506009, INDIA
  • 2Department of Zoology, Kakatiya University, Warangal-506009, INDIA

Res. J. Animal, Veterinary and Fishery Sci., Volume 1, Issue (4), Pages 1-7, May,24 (2013)

Abstract

The rearing of Tasar silkworm, Antheraea mylitta D., conducted in outdoor conditions by the tribal people on the forestgrown Terminalia arjuna trees resulted in 80-90% crop loss due to pests, predators, natural calamities and diseases. Thereare several predators of tasar silkworm like Ichneumon fly, Canthecona bug, reduvid bug, Hicrodulla bipapilla (Prayingmantis) etc., which are natural enemies in abundance in the rearing field resulting in low yield of cocoons. Duringtraditional rearing the Tasar silkworms are also facing four serious diseases like Virosis, Bacteriosis, Microsporidiosis andMycosis which in turn add to heavy crop loss. In order to stabilize tasar silk production and increase income from tasarculture, tasar silkworm rearing methods need considerable improvement. In the present study, the tasar silkworms inoutdoor (nylon netted) and indoor (innovative) conditions reared simultaneously is envisaged and mortality due to variouscauses was comparatively evaluated. The Effective Rate of Rearing (by number) has shown occasional increase in some ofthe crops in the three years of indoor rearing. The most significant finding of the present studies is that the loss due to pestsis minimal to nil and due to rainfall is nonexistent in the indoor rearing.

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