Shrimp culture technology

Animal Sciences Animal Disease & Zoonoses
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hi i need ppts and lecture notes for Fish and Shrimp diseases and health management

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Arul Sundari

Have you tried looking for the relevant information at GOI website for the Fisheries and allied streams?

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Hi @Arul Sundari

Shrimp diseases can be broadly categorized into viral, bacterial, fungal, and parasitic infections.

1. Viral Diseases (Most Dangerous)

  • White Spot Syndrome Virus (WSSV):
    • Highly contagious; causes rapid mortality in shrimp.
    • Symptoms: White spots on the exoskeleton, lethargy, reduced feeding.
    • Prevention: Biosecurity measures, screening of broodstock, and pond management.
  • Infectious Hypodermal and Hematopoietic Necrosis Virus (IHHNV):
    • Affects growth and survival; particularly impacts Penaeus vannamei and P. stylirostris.
    • Symptoms: Reduced growth rate, deformed body parts.
    • Prevention: Genetic selection of IHHNV-resistant shrimp strains.
  • Taura Syndrome Virus (TSV):
    • Affects Penaeus vannamei primarily.
    • Symptoms: Red tail fan, soft shell, reduced feeding.
    • Prevention: Use of virus-free post-larvae, improved farm management.

2. Bacterial Diseases

  • Vibrio spp. (e.g., Vibrio parahaemolyticus, V. alginolyticus):
    • Causes Early Mortality Syndrome (EMS) / Acute Hepatopancreatic Necrosis Disease (AHPND).
    • Symptoms: Pale hepatopancreas, slow growth, high mortality.
    • Prevention: Improved water quality, probiotics, and proper sanitation.
  • Necrotizing Hepatopancreatitis (NHP):
    • Caused by a rickettsia-like organism (NHPB).
    • Symptoms: Weakness, empty gut, soft shell.
    • Prevention: Good biosecurity and water quality management.

3. Fungal Diseases

  • Fusarium spp. Infections:
    • Cause shell disease and black gill disease.
    • Prevention: Water quality management, avoiding overfeeding, maintaining hygiene.

4. Parasitic Diseases

  • Microsporidiosis (e.g., Enterocytozoon hepatopenaei - EHP):
    • Causes growth retardation rather than mortality.
    • Symptoms: Reduced growth rate, white fecal matter.
    • Prevention: Use of pathogen-free broodstock and rigorous pond management.
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