Zeylanicobdella arugamensis intensity and histopathology of hybrid grouper skin from soil and concrete ponds

Z. arugamensis was a parasite that often infested hybrid grouper (E. fuscoguttatus x E. lanceolatus). This study aimed to differentiate the Z. arugamensis intensity and the skin histopathology of hybrid grouper from concrete and soil ponds. The research method was a survey and data analysis using the IBM SPSS 21 Mann Whitney U Test. This study used 50 of hybrid grouper each from soil and concrete ponds. The intensity of Z. arugamensis from soil ponds was significantly different p < 0.05 with concrete ponds. Z. arugamensis infestation from soil ponds were 13 individuals including the intensity of Z. arugamensis in the medium category of 6.69 individuals/fish. Z. arugamensis infestation from concrete ponds were 10 individuals, including the intensity of Z. arugamensis in the light category was 2.9 individuals/fish. The results of histopathological scoring of hybrid grouper skin from soil ponds were significantly different, p=0.05 with concrete ponds. The results of skin histopathological scoring of hybrid grouper from soil ponds were 1.1 for 13 fish while from concrete ponds it was 0.5 for 10 fish. This study showed that there was a significant difference in the intensity of Z. arugamensis and skin histopathology of hybrid grouper from concrete and soil ponds.