Gill Fluke Disease in Fish
- This disease is scientifically called as Dactylogyrosis disease
- The causative agent of the disease is monogenic trematode, under the genus Dactylogyrus
- It causes serious infection in fishes and mainly carps and related species are more likely to be affected by the parasites
- Three species of Dactylogyrus is mainly found in carps:
D. vastator and
D. lamellatus are found in carps.
- These are found on the body, fins and gills of fish.
- They can be found throughout the year in a pond if not treated regularly
- They mainly start appearing in the rainy seasons
- They multiply rapidly and their intensity found to be maximum during winter seasons
- Juveniles are mostly affected, however, can affect adults also.
- The main reasons for the infestation are:
- High Organic Load
- High Stocking Density
Symptoms of Infected fish
- Infected fishes rest near the surface of the pond margin,
- Swim very slowly,
- Feel suffocation and gasping air
- More slimy,
- Dropping or folding of fins and
- Pale gills.
- Bath Treatment with 3% salt solution for 10-30minutes
- Indefinite treatment with 0.5-1% Salt solution
- Alternative baths with 1:2,000 acetic acid and 2% sodium chloride are effective.
- 10 ppm of potassium permanganate bath for 1-2 hours
- 5 ppm in the pond may give good results
- Bromex – 50 (0.18 ppm)
- Dylox (0.25 ppm) are effective to control the disease
Gyrodactylosis disease in Fish
- This disease is scientifically called as Gyrodactylosis
- The causative agent of the disease is also a monogenic trematode, under the genus Gyrodactylus
- It causes serious infection in fishes and mainly carps and related species
- They are found on the fins and on the body of the fish
- Clinical Signs:
- Production of more slime,
- Damage of fins and
- Darkening of the body colour.
- The medicines used against Dactylogyrosis are also effective to control this disease.
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