Author(s): Mira Mawardi, Angela Mariana Lusiastuti and Diyas Fitria Idealistina

Abstract: This research based on the case of natural infection of Gyrodactylus sp in catfish (100-800 grams). The aim of the study was to control Gyrodactyliasis in catfish by using Curcuma xanthorrhiza Roxb. The catfish natural infected by Gyrodactylus sp macro-size type. The first step procedure to get the efficacy of a dose of Curcuma xanthorrhiza roxb against Gyrodactylus sp in vitro. The second was to observe the efficacy of Curcuma xanthorrhiza roxb dose in vivo which fish are naturally infected by Gyrodactylus sp. The third treatment was carried out on a field scale. The result showed that Curcuma xanthorrhiza roxb. was effectively to kill Gyrodactylus sp in vitro at a dose of 100 ppm in 446 minutes and 200 ppm for 200 minutes. While Gyrodactylus sp (without host) was able to live in water at 24 ⁰C for 2880 minutes. The intensity of Gyrodactylus sp in chronic catfish was 1057 individuals per fish. While the highest fish mortality happened in case 4, it was 65.18% because found to be co-infected with pathogen bacteria. Bacterial infections greatly affect the mortality of catfish. The lowest fish mortality rate of 1.4% was in case 6. Immersion therapy for 24 hours using 100 ppm Curcuma xanthorrhiza Roxb. was effective to kill Gyrodactylus sp and it was safe for catfish. Treated fish will shorten the transmission of Gyrodactylus sp between fishes and reduce mortality. The use of Curcuma xanthorrhiza Roxb. can be recommended.

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