Diseases Summary

More information on Dactylogyrus Gill Flukes Disease

Main Ref:	60
Disease type:	Parasitic infestations (protozoa, worms, etc.)
Disease name:	Dactylogyrus Gill Flukes Disease
Other names:	Helminthose (gills)
Caus. agent:	Dactylogyrus sp.
Group:

Part of body and/or behavior affected by disease:
Skins and/or fins	Belly	Swimming behavior
Gills	Anus	Other behavior
Eyes	Viscera Afflicted	Other symptoms

Fish affected:	Different species.
Symptoms:	Gills swollen and pale, high mucus secretion, spreaded opercula, restless, near inflow, gasping air, heavy ventilation, dark color, loss of weight, cease to feed, swimming with high speed, jumping out of water, scraping against objects. Can cause epithelial outgrowths and tissue swelling on gills. Serious epizootics and mortality (Grabda 1991).
Treatments:	Masoten bath 25 to 30 g/l for 5 to 10 min. Quinine hydrochloride 30 ppm bath for several days reduced Dactylogyrus on Ctenopharyngodon idella (Edwards and Hine 1974). Masoten bath 25 to 30 g/l for 5 to 10 min. Quinine hydrochloride 30 ppm bath. Can also be treated with Trichlorfon (Dose: 0.25 –3.0 mg/1 liter water for 3 days. The dosage depends on the hardness of the water, the harder the water the more trichlorfon can be used. A 35% water change is recommended after treatment or carbon filter can be used.) and combined with an anti-bacterial drug. FMC ( 1 liter of Formaldehyde (37%) (or 100 ml) 3.7 gm of Malachite Green oxalate (or 0.37 gm) 3.7 gm of Methylene Blue (or 0.37 gm) Dose: 1.0-1.2 ml/100 l tank water or 25 drops/100 l or 1 drop/gallon) can also have good result. When the parasite is resistant to Trichlorfon, Flubendazole (Dose: 100-200 mg/100L for 1-2 days, 50% waterchange should be made), Mebendazole (Dose: 100-200 mg/100L for 2-3 days, afterwards water change should be made. Note: should be dissolved in some alcohol), Levamisole(Dose: 100mg/100L for 1-2 days.), Praziquantel (Dose:300-500 mg/100L for 1-3 days or 150 mg/10L for 2-3 hours), or salt (NaCl) (Dose: 5-10mg/liter aquarium water; 10gm/l for1-2 hours or 5gm/l for 5-7 days). Ref. 41805.
Prophylaxis:	Appropriate diet, disinfection before stocking (CaO), quarantine.
Remarks:	The hook of the gillflukes cause severe damage to the gill tissue, this causes the gill cells to be stimulated to produce more mucus than usual. Ref. 41805.
Mortality and seasonality
Mortality:
Seasonality: