IGNOU BLP 4 2026 - Explain the causes, symptoms and control measures of Muscard

Question

Explain the causes, symptoms and control measures of Muscardine disease in silkworms.

28 Feb 2026

Answer :

Word Count : 451

Muscardine disease is a serious fungal infection that affects silkworms, caused primarily by the fungus *Beauveria bassiana*. This disease is highly contagious and can spread rapidly in silkworm rearing environments, leading to significant losses in silk production. Understanding its causes, symptoms, and control measures is crucial for effective crop protection in sericulture. The primary cause of Muscardine disease is the invasion of the silkworm's body by fungal spores of *Beauveria bassiana*. The spores attach to the silkworm’s cuticle and germinate, penetrating the body wall and multiplying inside the hemolymph. The fungus produces toxins that damage the internal organs, eventually leading to the death of

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