Correlation between Glucose Level and Protozoan Ectoparasite Infestation Level of Humpback Grouper (Cromileptes altivelis) Nursery in UPBL Situbondo, East Java

The purpose of this study was to determine the correlation between blood glucose levels of humpback grouper with an infestation of protozoa ectoparasites and the correlation between blood glucose levels and the infestation of protozoa ectoparasites in humpback grouper (Cromileptes altivelis) in the Sea Cultivation Development Unit, Situbondo, East Java. This research is survey research. The sample was in the form of a humpback grouper (Cromileptes altivelis) measuring 13-20 cm, 30 of which were randomly drawn from a population of 2,000 individuals. The results of the study showed that the blood glucose level of the humpback grouper Nurserys was the lowest of 21 mg/dL and the highest was 67 mg/dL. Humpback grouper Nurserys began to be infested with Trichodina sp. Ectoparasites, and Cryptocaryon sp. in fish with glucose levels of 25-28 mg/dL included in the category of normal infestations, while fish with glucose levels of 29-36 mg/dL (Normal) are included in the category of mild to severe infestations. The results showed that there was a very close correlation between blood glucose levels of humpback grouper Nurserys and ectoparasite infestations. The higher the blood glucose level the higher the ectoparasite infestation in the Nurserys of the humpback grouper.