IGNOU BLP 4 2018 - Give the period of occurrence and any one characteristic signs/symptom

Question

Give the period of occurrence and any one characteristic signs/symptoms of the following disease:
a. Microsporidiosis in Tasar Silkworm
b. Muscardine in Muga Silkworm
c. Pebrine in Eri silkworm
d. Bacteriosis in Oak Tasar Silkworm
e. Grasserie in Eri Silkworm

07 Mar 2018

Answer :

Word Count : 279

Sure, let's delve into the fascinating world of silk production and the diseases that can affect silkworms.

a. Microsporidiosis in Tasar Silkworm:
- Period of Occurrence: Microsporidiosis typically occurs during the larval stage.
- Characteristic Signs/Symptoms: Affected larvae exhibit slow growth, reduced silk production, and a whitish appearance due to the accumulation of spores. The disease is caused by microsporidian parasites.

b. Muscardine in Muga Silkworm:
- Period of Occurrence: Muscardine usually occurs during the later larval stages.
- Characteristic Signs/Symptoms: Infected silkworms become

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