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Life cycle of protozoan parasites

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As Siyam
As Siyam

Protozoan parasites have complex life cycles that involve both aquatic and host-dwelling stages. Three examples are provided: 1) Ichthyophthirius multifiliis lives on the skin, gills, and fins of freshwater fish and causes skin lesions and respiratory stress. It has a free-swimming stage that infects new hosts. 2) Cryptocaryon irritans infects marine fish and causes skin discoloration, fin damage, and eye cloudiness. Its life cycle also includes a free-living stage. 3) Spironucleus salmonicida resides in the internal organs and muscles of salmonids, releasing toxins that cause disease. Stress reduction and

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LIFE CYCLE OF PROTOZOAN FISH PARASITES Shoriful Islam(ASH1602006M) Bipul Chandra Das (ASH1602034M) Md. Rony Kazi (ASH1602047M) Humayra Amin (BKH1602052F) Shanto Datta (ASH1602059M)
Parasite: Are those organisms which cling to relatively large animals externally or internally for food & completion of their life cycle.  Protozoan parasites of fish: Those microscopic,unicellular,free living parasites that undergo protozoa phylum & attack on or in fish body.  General Characteristics:  Locomotory organs: Pseudopodia or flagella or cilia.  Nutrition: Holozoic, Holophytic ,Saprozoic or parasitic  Reproduction: Sexual or asexual.  May be ectoparasitic or endoparasitic.
Protozoan parasites types according to attacking sites of fish body  Ectoparasites  Lives on external surface of fish body  Found on skin,gills & fins. Commonly found ectoparasites are: a. Ichthyophthirius multifiliis b. Cryptocaryon irritans c. Chilodonella uncinate d. Ichthyobodo salmonis etc.  Endoparasites  Lives on internal surface of fish body  Found on intestine , visceral cavity of fish Commonly found endoparasires are: a. Spironucleus salmonicida b. Hexamita muris c. Eimeria falciformis d. Goussia carpelli etc.
Life cycle of protozoan parasites
Life cycle of Ichthyophthirius multifiliis
Effects & Prevention control  Effects:  Affected on skin,gills & fins [Freshwater species]  Epidermal tissue changes & formation of epithelial ulcers.  Causes minutes white spots & form nodule.  Fish show irritation & restless.  Prevention & control:  Prevention of exposure of fish to the parasites  Applying quarantine method.  Formalin 160-250 ppm for 1 hour daily(dip bath)  KMnO4 01% for 30-45 seconds  NaCl 7000-20000 ppm
Life cycle of Cryptocaryon irritans
Effects & Prevention control  Effects:  Affected on skin,gills & fins [Marine water species]  Ragged fins,cloudy eyes,pale gills.  Increase mucus production.  Irregular in skin colour  Breath more rapidly  Prevention & control:  fish should be placed in a quarantine tank for at least 2-3 weeks to make sure they are eating.  maintaining water quality, correct nutrition, stable temparature, and meeting habitat requirement.  Copper solution medication are effective.
Life Cycle of Spironucleus salmonicida
Effects & Prevention control  Effects:  Especially invade on salmonid fish.  Create fowl smelling.  Pus-filled absesses in muscles & internal organ.  Prevention & control:  Elimination of stress and improvement of husbandry will help correct an outbreak of spironucleosis.  Apply quarantine method for prevention.  Metronidazole can be administered in feed at a dosage of 50 mg/kg body weight (or 10 mg/g feed) for 5 consecutive days.  Make water changes (70–100%) each day before re-dosing.
Life Cycle of Eimeria falciformis
Effects & Prevention control  Effects:  Invade the intestine of fish  Resulrs diarrhea,weight loss & dehydration.  Significant damage to the intestine epithelial layer.  Release of blood fluid & electrolytes into the intestine.  Prevention & control:  Water parameter should be maintained accurately.  Apply quarantine method.  The antidiarrhoeic drug may be used.
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Life cycle of protozoan parasites

  • 1. LIFE CYCLE OF PROTOZOAN FISH PARASITES Shoriful Islam(ASH1602006M) Bipul Chandra Das (ASH1602034M) Md. Rony Kazi (ASH1602047M) Humayra Amin (BKH1602052F) Shanto Datta (ASH1602059M)
  • 2. Parasite: Are those organisms which cling to relatively large animals externally or internally for food & completion of their life cycle.  Protozoan parasites of fish: Those microscopic,unicellular,free living parasites that undergo protozoa phylum & attack on or in fish body.  General Characteristics:  Locomotory organs: Pseudopodia or flagella or cilia.  Nutrition: Holozoic, Holophytic ,Saprozoic or parasitic  Reproduction: Sexual or asexual.  May be ectoparasitic or endoparasitic.
  • 3. Protozoan parasites types according to attacking sites of fish body  Ectoparasites  Lives on external surface of fish body  Found on skin,gills & fins. Commonly found ectoparasites are: a. Ichthyophthirius multifiliis b. Cryptocaryon irritans c. Chilodonella uncinate d. Ichthyobodo salmonis etc.  Endoparasites  Lives on internal surface of fish body  Found on intestine , visceral cavity of fish Commonly found endoparasires are: a. Spironucleus salmonicida b. Hexamita muris c. Eimeria falciformis d. Goussia carpelli etc.
  • 4. Life cycle of protozoan parasites
  • 5. Life cycle of Ichthyophthirius multifiliis
  • 6. Effects & Prevention control  Effects:  Affected on skin,gills & fins [Freshwater species]  Epidermal tissue changes & formation of epithelial ulcers.  Causes minutes white spots & form nodule.  Fish show irritation & restless.  Prevention & control:  Prevention of exposure of fish to the parasites  Applying quarantine method.  Formalin 160-250 ppm for 1 hour daily(dip bath)  KMnO4 01% for 30-45 seconds  NaCl 7000-20000 ppm
  • 7. Life cycle of Cryptocaryon irritans
  • 8. Effects & Prevention control  Effects:  Affected on skin,gills & fins [Marine water species]  Ragged fins,cloudy eyes,pale gills.  Increase mucus production.  Irregular in skin colour  Breath more rapidly  Prevention & control:  fish should be placed in a quarantine tank for at least 2-3 weeks to make sure they are eating.  maintaining water quality, correct nutrition, stable temparature, and meeting habitat requirement.  Copper solution medication are effective.
  • 9. Life Cycle of Spironucleus salmonicida
  • 10. Effects & Prevention control  Effects:  Especially invade on salmonid fish.  Create fowl smelling.  Pus-filled absesses in muscles & internal organ.  Prevention & control:  Elimination of stress and improvement of husbandry will help correct an outbreak of spironucleosis.  Apply quarantine method for prevention.  Metronidazole can be administered in feed at a dosage of 50 mg/kg body weight (or 10 mg/g feed) for 5 consecutive days.  Make water changes (70–100%) each day before re-dosing.
  • 11. Life Cycle of Eimeria falciformis
  • 12. Effects & Prevention control  Effects:  Invade the intestine of fish  Resulrs diarrhea,weight loss & dehydration.  Significant damage to the intestine epithelial layer.  Release of blood fluid & electrolytes into the intestine.  Prevention & control:  Water parameter should be maintained accurately.  Apply quarantine method.  The antidiarrhoeic drug may be used.