Dactylogyrosis Disease in Biofloc Tank?

Posted by HANGSHAKALI CHAKRABORTY on

fluke biofloc

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. exitensis,
    • 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.
  • Treatments:

    • 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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