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What is Paramoeba perurans?

Published in Fish Parasite 2 mins read

Paramoeba perurans is the causative agent of amoebic gill disease (AGD). It is a significant pathogen impacting farmed marine fish.

Understanding Paramoeba perurans

  • Causative Agent: Paramoeba perurans is the specific amoeba responsible for causing AGD.

  • Impact: It primarily affects:

    • Atlantic salmon (Salmo salar L.).
    • Many other farmed marine fish species worldwide.
  • Disease: AGD is the disease caused by this amoeba, specifically targeting the gills of fish.

Key Facts About Paramoeba perurans and AGD

Here’s a brief overview of Paramoeba perurans and its associated disease, AGD:

Feature Description
Pathogen Paramoeba perurans (Amoeba)
Disease Amoebic Gill Disease (AGD)
Primary Host Atlantic salmon, other farmed marine fish
Target Organ Gills
Global Impact AGD is a significant issue in aquaculture globally.

Why is Paramoeba perurans Important?

  • Economic Impact: AGD caused by Paramoeba perurans results in substantial economic losses in aquaculture due to:
    • Increased mortality.
    • Reduced growth rates.
    • Treatment costs.
  • Fish Health: It compromises the respiratory function of fish, severely affecting their overall well-being.
  • Global Concern: As aquaculture is crucial for food security, understanding and managing Paramoeba perurans is a pressing global priority.

Management and Control

While there is no cure, managing AGD involves approaches such as:

  • Freshwater Baths: Temporarily transferring affected fish to freshwater can reduce amoeba loads.
  • Monitoring: Regular checks on fish health are essential for detecting early signs of AGD.
  • Environmental Controls: Optimizing farming environments to reduce stress can help minimize AGD outbreaks.

By understanding the nature of Paramoeba perurans and the disease it causes, aquaculturists can strive to improve fish health and production.