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Eustrongylides excisus in fish species caught in the Massaciuccoli Lake (Northwest Tuscany, Italy): implications for freshwater fish quality and public health Castiglione, D.; Di Maggio, M.; Guardone, L.; Ricci, E.; Tinacci, L.; Guglielmone, G.; Coltraro, M.; Susini, F.; Armani, A. (2023). Eustrongylides excisus in fish species caught in the Massaciuccoli Lake (Northwest Tuscany, Italy): implications for freshwater fish quality and public health. Food Control 153: 109894. https://dx.doi.org/10.1016/j.foodcont.2023.109894 In: Food Control. Butterworth Scientific/Elsevier: London. ISSN 0956-7135; e-ISSN 1873-7129

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Beschikbaar in	Auteurs
VLIZ: Open access 392543 [ download pdf ]

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Trefwoorden

Nematoda [WoRMS] Zoet water

Author keywords

Nematodes; Visible parasites; Risk management; Seafood supply chain; Seafood inspection

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Auteurs		Top
Castiglione, D. Di Maggio, M. Guardone, L.	Ricci, E. Tinacci, L. Guglielmone, G.	Coltraro, M. Susini, F. Armani, A.

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Abstract

In recent years, nematodes belonging to the genus Eustrongylides spp. have been increasingly reported in Italian lakes and in several freshwater fish species. This work aimed to investigate the occurrence of Eustrongylides spp. in 11 freshwater fish species collected from Massaciuccoli lake (Northwest Tuscany, Central Italy): Black bullhead, Ameiurus melas (Rafinesque, 1820), Goldfish, Carassius auratus (Linnaeus, 1758), Wels catfish, Silurus glanis (Linnaeus, 1758), Thinlip grey mullet Chelon ramada (Risso, 1827), Pumpkinseed, Lepomis gibbosus (Linnaeus, 1758), Common carp, Cyprinus carpio (Linnaeus, 1758), Tench (Tinca tinca) (Linnaeus, 1758), European eel, Anguilla anguilla (Linnaeus, 1758), Largemouth black bass, Micropterus salmoides (Lacepède, 1802), Big-scale sand smelt, Atherina boyeri (Risso, 1810), and Stone moroko, Pseudorasbora parva (Temminck & Schlegel, 1846). Overall, 4053 fish specimens (327 large and 3726 small specimens), collected in eight different samplings (July 2020–April 2021), were visually examined, and subjected to artificial digestion. A total of 476 nematode larvae were collected and microscopically identified as Eustrongylides spp. A subsample (10%) of the collected larvae was subjected to molecular analysis through the analysis of the ITS gene region and identified as E. excisus. Quantitative descriptors of the parasite population were calculated using the data collected from the six species that tested positive (A. melas, S. glanis, L. gibbosus, M. salmoides, A. boyeri, C. ramada) and discussed in the light of their dietary habits. This study reports for the first time the presence of E. excisus in S. glanis and juvenile of C. ramada in Italy. The apparent expansion of this zoonotic parasitic nematode in freshwater fish species, possibly related to changes in the lakes’ ecosystems, could represent an issue for local economies. Therefore, Control Authorities and Food Business Operators must respond to this emerging hazard with appropriate control measures, to prevent potentially unfit or dangerous products from reaching the consumer.

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