Endoparasitic worms inventory on Skipjack Tuna (Katsuwonus pelamis) gastrointestinal from North Sumatera Indian Ocean, Indonesia

Abstract

Skipjack tuna Katsuwonus pelamis is one of the commercial fishes in Indonesia. This species is frequency caught by fishermen in Indian Ocean, North Sumatra Province. Therefore, the objectives of the present study were to identify endoparasitic worms and examine the infection level in skipjack tuna K. pelamis from North Sumatera Indian Ocean. Sampling was conducted in Horizon Private Fishing Port, Sibolga from 21 June to 5 July 2019. A total of 25 fish samples with weight ranges from 390 g to 670 g and total length from 29.3 cm to 34.6 cm. The identification of the worm was carried out in the laboratory using a stereo microscope. The results showed that there were eighth species of worms were found in intestine and stomach of the fish with varies level incidency, for example Echinorhynchus sp. and Rhadinorhynchus sp. with 100% intestinal incidences; Neoechinorhynchus sp.had 72% intestinal incidences; Leptorhynchoides sp. had 56% intestinal incidences; Pomphorhynchus sp. with 32% intestinal incidency; and Acanthocephalus sp. with 20% intestinal incidency. It is concluded that the Echinorhynchus sp. and Rhadinorhynchus sp. had higher incidency.