PLEROCERCOIDS OF ADENOCEPHALUS PACIFICUS IN ARGENTINE HAKE, MERLUCCIUS HUBBSI FROM PATAGONIAN WATERS

CANTATORE, DELFINA M. P.; LANFRANCHI, ANA L.; CANEL, DELFINA; LEVY, EUGENIA; TIMI, JUAN T.

Copenhague

Congreso; 15th International Congress of Parasitology; 2022

World Federation of Parasitologists

ntroduction: Adenocephalus pacificus is the agent of a common fish-borne cestodosis, byconsumption of raw fish. Its adults are known worldwide, but its larvae have been reported in fish only from Peru, where most human cases have been reported. In the Argentine sea, sea lions host this species, which allow infer that previous records of “pseudophyllidean” larvae in Argentine hakes, Merluccius hubbsi, belong to this species. Aim: To identify plerocercoids parasitizing hakes and, from a pubic halth perspective, to assess the risk of parasitism for consumers.Methods: A total of 471 hakes caught in 11 samples in the southern Patagonian waters weremeasured, headed and gutted (H&G) and examined for plerocercoids. H&G fish were washed andparasites were retained in a sieve. Then, each fish was filleted and examined by transillumination.Larvae were characterized by sequencing the partial lsrDNA (D1–D3 domains) and almost complete cox1.Results: Larvae were recovered from H&G fish in 5 samples at prevalence