Anisakis Infection of Belanger’s Croaker (Johnius Belangerii Cuvier 1830) at The Indian Ocean Coast of Yogyakarta, Indonesia

• Main Authors: A’yun, Nisa Qurota, Syarifah, Rizka Fauziana, Murwantoko, Murwantoko, Setyobudi, Eko
• Format: Article PeerReviewed
• Language: English
• Published: The Hashemite University 2021
• Subjects: Fisheries Sciences
• Online Access: https://repository.ugm.ac.id/278675/1/A%27yun_PN.pdf; https://repository.ugm.ac.id/278675/; https://jjbs.hu.edu.jo/vol15.htm; https://doi.org/10.54319/jjbs/150105
• Institution: Universitas Gadjah Mada

This research intended to find out the prevalence, inten-sity, and species of Anisakis (Nematoda) larvae infecting Belanger’s croaker (Johnius belangerii) at Indian Ocean coast of Yogyakarta. Totally, 150 samples of Belanger’s croaker fish collected from fishermen were used for this experiment. After measuring the total length and weight, each sample was examined for Anisakis larvae infection in the body cavity, internal organ, and muscle. Results showed that Belanger’s croaker was susceptible to Anisakis infection by moderate prevalence (48.7%) with a mean inten-sity of 5.7 larvae/individual. All Anisakis larvae were found in the abdominal cavity (100%). Morphological identification by Scanning Electron Microscopy showed that the Anisakis larvae infecting the Belanger’s croaker was Anisakis Type I, marked by a boring tooth on the anterior part and a mucron at the caudal end. Molecular identification applying PCR-RFLP of the ITS region, sequencing, and phylogenetic analysis of the mitochondrial DNA cox2 gene confirmed the larvae as Anisakis typica var. indonesiensis. The presence of A. typica in Belanger’s croaker is estimated to pose a small risk to human health. Anisakis typica is known as not zoonotic Anisakis species. Moreover, the infection occurred in a relatively moderate prevalence, low intensity, and larvae were not found at the edible part of fish. From another point of view, these larvae are considered as useful biological indicators for several ecological parameters and further studies.