Blood glucose level and infestation degree by Zeylanicobdella sp. in cantang grouper before and after closed wet transportation system

The cantang grouper is one of the high-value fisheries commodities. Transportation is an integral activity in aquaculture, notably in transporting cantang grouper. Among the methods is the closed wet transportation system. The disrupted environment in the closed wet transportation system, exhaustion, and deficit of the immune system can cause the cantang grouper to be infested by marine leech or Zeylanicobdella. In this study, Zeylanicobdella sp. infestation levels and cantang grouper blood glucose levels are compared before and after a closed wet transportation system. This research used an experimental method. The 35 individuals' sample was examined for blood glucose levels and the infestation degree of Zeylanicobdella. Subsequently, they were transported from Situbondo, East Java, to the Faculty of Fisheries and Marine Universitas Airlangga Surabaya and re-examined. The results of measuring blood glucose levels of cantang grouper were in the below-normal category, normal, and above-normal. There was no significant difference in the infestation degree by Zeylanicobdella sp. between before and after transportation. This study concludes that closed wet transportation affected blood glucose levels and did not affect the degree of infestation by Zeylanicobdella sp. in cantang grouper.