Blood glucose and digestive tract andoparasite helminth infection of cantang grouper (Epinephelus lanceolatus x Ephelus fuscoguttatus) from traditional ponds in the Kampung Kerapu of Lamongan East Java

Cantang grouper Epinephelus fuscoguttatus x Epinephelus lanceolatus (E. fuscoguttatus x E. lanceolatus) is a hybrid fish between female tiger grouper and male kertang grouper, which has a high resistance to the environment and pathogen infection. The aim of this research was to find out the stress level (blood glucose levels) and helminth infections in the digestive tract of the cantang grouper (E. fuscoguttatus x E. lanceolatus) on a traditional pond in Kampung Kerapu Lamongan, East Java. This research is a survey research with 40 samples of Cantang grouper with purposive sampling. The results of the study showed that the Cantang groupers were reared in traditional ponds, positively infected by a single worms Prosorhynchus, with a prevalence of 24.4%. The lowest blood glucose levels was 0 mg/dL and the highest was 117 mg/dL. Infection was occurred in Cantang groupers that had blood glucose levels were below of normal, and above of normal with moderate infection degrees. The results also showed that there was no close correlation between blood glucose level of the Cantang grouper with intestinal helminth infections.