SylbV01-00-00. pmd

VI. Theory
BLOCK 1: Viral diseases of silkworm
Unit 1:
Virus diseases of silkworm
Introduction to silkworm virus diseases. Symptomatology and basic
knowledge on them. Economic importance, classification of silkworm
viruses. Symptomatology and diagnosis of viral infections of silkworm.
Purification of viruses and serological techniques. Nature, size and
morphology of nuclear polyhedrosis virus, cytoplasmic polyhedrosis
virus, infectious flacherie virus, densonucleosis virus.

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Sericulture
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Unit 2:
Prevention and control of viral diseases of silkworms
Predisposing factors, disease cycle including replications, other hosts
and spread of virus diseases. Interaction among silkworm viruses.
Histopathology and pathophysiology of viral infections. Prevention and
control.
BLOCK 2: Bacterial diseases of silkworm
Unit 1:
Importance of bacterial diseases of silkworm
Introduction, history and importance ofBacterial diseases of the
silkworm. Mixed infections. Etiology of bacterial flacherie, morphology
and chemistry, pathogenicity, route of infection, silkworm immunity
and serological detection.
Unit 2:
Bacterial diseases- symptomatology, prevention and control
Introduction, bacterial septicemia, bacterial diseases of digestive organs.
History and importance ofBacterial toxicosis of the silkworm. Structure
and chemistry, biosynthesis of protein and chemistry of crystal toxin,
histopathology, pathophysiology, Prevention and control.
BLOCK 3: Protozoan and fungal diseases of silkworm
Unit 1:
Protozoan diseases, pathogens, symptomatology, prevention
and control
Introduction, history and importance of the pathogenic protozoans of
silkworms. Biodiversity, isolation, purification, morphology and
chemistry of pathogenic protozoans. Strains of Microsporidians infecting
silkworm and their life-cycle. Symptoms at the various stages of the
life cycle of silkworm, pathologies, routes of infection, alternative hosts,
cross infectivity, survival and spread, detection, prevention and control.