Dactylogyriasis (gill worms)
A. Causes: Dactylogyrus spp., Cychlidogyrusspp., Quadricanthus spp.
B. Characteristics of pathogens:
- Small worms that are ectoparasites, are obligate parasitic (fish as the only definitive host), and breed by laying eggs.
- This disease infects all types of fish that live in fresh water, especially the size of seeds and gills as the target organ of infection.
C. Clinical Symptoms:
- The color of the body of an infected fish will become pale, decreased appetite, thin body, restlessness and fish movements become sluggish.
- fish breathing increases, mucus production in excess gills and fish often jumping.
- fish will gather / approach at the entrance gate.
- The gills will become pale or swollen so the operculum becomes open.
- Visual observation of behavior and clinical symptoms that arise
- Maintaining water quality, especially water temperature stabilization in ponds of> 29 oC.
- Administration of immunostimulants (eg adding vitamin C to feed) regularly during maintenance.
- The content of organic matter dissolves and / or increases the frequency of water changes.
- Fish with dactylogyriasis with low prevalence and intensity, treatment can be done with several types of disinfectants,
a. Immersion in a solution of kitchen salt at a concentration of 500-10,000 mg / liter (depending on the type and age of fish) fish soaked for 24 hours.
b. Immersion in Potassium Permanganate solution
Permanganate (PK) at a dose of 4 mg / liter for 12 hours.
Herbal treatments can use:
a. Orinda citrifolia L.
done by: chopping 10 leaves and then kneading in 5 liters of water, then the water is used to soak the sick fish. The leaves and fruit of Orinda citrifolia L. are also very good for tilapia fish daily feed.
b. Chinese Petai or commonly called Kemlandingan or Lamtoro (Leucaena leucocephala)
treatment is done by:
Mix 2 grams of chopped leaves with fish feed.
Then the feed is given to 1 kg of fish.