disease in fish- life cycle Ichtyophtirius multifilis

Ichtyophtirius multifilis is one type of protozoa that often cause disease in fish, both ornamental fish and fish consumption. Protozoa are small in size, so can not be seen with the naked eye. In the body of the fish that attacked this protozoan will form white spots 0.5 to 1 mm in diameter so that the disease is often called white spot. This white spot is actually a colony of tens to hundreds Ichtyophtirius multifilis

Ichtyophtirius multifilis damaging fish mucus cells, and can cause bleeding. After 8 days of life in fish, these parasites are mature enough to establish a breeding. These parasites escape from the body of fish, and floating in the water for some time. Then attach themselves to an object, like the plants form a layer of skin that looks as mucus. Form so-called cyste. This parasite in cyste divide within 5 hours (depending on temperature), forming thousands of small multifilis Ichtyophtirius. If within 48 jm not find ditempelinya fish, then the children of this parasite will die, the children of this parasite attached to the mucous membrane of the fish.

life cycle Ichtyophtirius multifilis can be divided into four phases:
a. parasitic phase: When living in the fish
b. Phase pre-cyste: Having grown up and break away from the fish's body, but has not yet established cyste.
c. Cyste Phase: During the splitting process occurs, wrapped wall mucus, and attached to an object in water.
d. Phase post-cyste: Represent the seeds of parasites coming out of cyste.