The profile of myxobolus infection in the gill tissue of common carp (Cyprinus carpio L.) strain punten from concrete ponds

Abstract

Abstract One of the successes in cultivation activities is by maintaining the quality of fish and their environment. Common carp (Cyprinus carpio L.) cultivation is one of the leading commodities in various regions, especially East Java. In Indonesia, there are several types of common carp strains, one of the seventh strains in Indonesia is the Punten strain from the Punten, Batu area of Malang. However, several cases show incidents of disease attacks, one of those diseases that often infect fish in Punten is the parasite Myxobolus sp. The observation of tissue lesion was used gills from common carp (C. carpio L.) taken from The Unit of Freshwater Cultivation Management (UPBAT) Punten, Batu Regency. Based on the results of observations, the visible lesion in the gill tissue, among, oedema, haemorrhage, the fusion of lamellae and vacuoles with scores and proportions of damage per field of view (%) in infected fish, respectively are, score 2 moderate (52%), 1 minor (25%), 1 minor (12%) and 2 moderate (18%). Based on the assessment, the scoring results show mild to moderate damage, so it is still classified as early-stage damage or it can also show the fish’s ability to recover in a good environment. However, the presence of infectious infections also allows the management of waste and water quality management in each pond, to maintain the environmental health of the common carp.