Abstract
of endoparasitic worms in skipjack tuna (Katsuwonus pelamis) in Sibolga Waters. Sampling conducted in Debora Private Fishing Port, Sibolga for 20 fishes that object weighing 740 – 1200 gr and length within 37,2 – 41,4 cm. The identification process is carried out in the laboratory using a microscope 40x and 100x total magnification. The endoparasitic worms found are Echinorhynchus sp. (100% intestinal and 10% stomach insidences, 8,6 intensities), Acanthocephalus sp. (25% Intestinal insidences, 1,6 intensities), Rhadinorhynchus sp. (25% intestinal and 5% stomach insidences, 1,5 intensities), Leptorhynchoides sp. (25% intestinal insidences, 1 intensity), Neoechinorhynchus sp. (25% intestinal insidences, 1,4 intensities), Pomphorhynchus sp. (10% intestinal insidences, 1,5 intensities), and Apororhynchus sp. (10% intestinal insidences, 1 intensity).
Highlights
Skipjack tuna Katsuwonus pelamis is one of the commercial pelagic fishes in Indonesian waters and widely distributed in the Indian Ocean, Banda Sea, Java Sea, Bali, and Flores Sea (Firdaus, 2018; Uktolseja, 1989)
Skipjack tuna Katsuwonus pelamis is one of the commercial species of fishes in Indonesia frequently caught by fishermen in Sibolga waters, North Sumatra Province
The results indicated all fish samples were infected by five families of endoparasitic worms belonging to seven genera including Echinorhynchus sp., Acanthocephalus sp., Pomphorhynchus sp., Leptorhynchoides sp., Rhadinorhynchus sp., Neoechinorhynchus sp., and Apororhynchus sp. as shown in Figures 1 to 7
Summary
Skipjack tuna Katsuwonus pelamis is one of the commercial pelagic fishes in Indonesian waters and widely distributed in the Indian Ocean, Banda Sea, Java Sea, Bali, and Flores Sea (Firdaus, 2018; Uktolseja, 1989). This species is one of the main targets for fishing by local fishers of Sibolga in North Sumatra, Indonesia, and and has experienced intensive exploitation (Pulungan and Fadhilah, 2018). The study on the infection of the parasite on skipjack tuna in Indonesia waters is very limited with only three reports by Sabariah et al (2018), and Yani and Susianti (2017), and Diba and Rahmad (2018) on the endo-parasitic worms’ infection from Manokwari waters and Makassar Strait available
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