Abstract
Clinostomum complanatum, a digenean trematode of the Clinostomidae family, is a fish-borne zoonotic parasite responsible for Halzoun syndrome in humans and is transmitted through the consumption of raw or undercooked freshwater fish. Of the total of 112 specimens of European perch (Perca fluviatilis) sampled from a subalpine lake (Lake Endine) in North Italy in 2019, 21 (18.75%) tested positive for encysted metacercariae in the fillet. This study reports the first isolation of C. complanatum in P. fluviatilis and highlights the possible zoonotic risk for consumers, since P. fluviatilis is a food fish used in the traditional local cuisine.
Highlights
Clinostomum complanatum (Rudolphi, 1814) is a digenean trematode of the Clinostomidae family.The high degree of morphological differences within the genus Clinostomum and similarities among species have resulted in several taxonomic revisions of Clinostomum species [1]
Study, we report the first isolation of Endine, a subalpine lake this study, we report the first isolation of C. complanatum in P. fluviatilis from Lake Endine, a subalpine in lake in Lombardy, northern
Primers [15], PCR was initially run using the classical Folmer primers [20], obtaining an amplicon with a low identity of 90.7% with Schistosoma mansoni (e-value 3e11). This is the first study to report the presence of C. complanatum in fillets of Perca fluviatilis from a subalpine lake in Italy
Summary
Clinostomum complanatum (Rudolphi, 1814) is a digenean trematode of the Clinostomidae family. The life cycle of C. complanatum is similar to other species in the Clinostomidae family [3]: the adult stage resides in the buccal cavity of piscivorous birds and reptiles but rarely mammals, including humans. C. complanatum is a fish-borne zoonotic parasite responsible for Halzoun syndrome, a rare disease transmitted after consumption of raw or undercooked freshwater fish infected with metacercariae [6,7,8,9]. Res. Public Health 2020, 17, x FOR PEER REVIEW fish is part of the traditional cuisine, laryngitis caused by C. complanatum is a rare disease [10]. Since there are no drugs fordisease the treatment of clinostomiasis, surgical extraction should be promptly by C. complanatum is a rare [10]. European perch (Perca fluviatilis) is an invaluable resource for local agriculture and fisheries [13].
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