Abstract
Anisakisspp. nematodes are potentially zoonotic parasites; that infects a wide variety of aquatic species worldwide, with marine fish being the paratenic hosts. The aim of study was identify the presence of Anisakidae nematodes, and other parasites in Mugil curema . A total of 96 M . curema obtained from local markets in Tulancingo, Hidalgo, Mexico, were analyzed by necropsy. Only five M . curema present nematode collection in epaxial muscle. The tissues with the highest prevalence of parasites were identified, and samples of epaxial muscle with larval migration analyzed by histopathology. Visible parasites in necropsy tissues were classified according to their morphology. Nematode found in the liver were Contracaecum spp. (41.17%) and Pseudoterranova spp. third stage (7.36%); in the caudal part of the kidney were Anisakis spp. (13.23%), Pseudoterranova spp. third stage (11.77%) and Contracaecum spp. (5.88%); and in epaxial muscle were Anisakis spp. Larva I (5.88%) and Pseudoterranova spp (4.42%). In one fish, Clinostomum spp. was detected in epaxial caudal muscle. The present work reports for the first time the presence of nematodes of the family Anisakidae and Clinostonum spp. metacercariae, with zoonotic potential, in M . curema intended for human consumption in Tulancingo, Hidalgo, Mexico.
Highlights
Anisakis spp. are a nematode that infects a wide variety of aquatic organisms during the development of the parasite larval stages
In 30.88% fish, the caudal part of the kidney was infested with Anisakis spp. larva I (13.23%), Pseudoterranova spp. (11.77%), and Contracaecum spp. (5.88%)
Parasites were seen in 10.29% of epaxial muscle, and included Anisakis spp. larva I (5.88%) and Pseudoterranova spp. third-stage (4.42%)
Summary
Anisakis spp. are a nematode that infects a wide variety of aquatic organisms during the development of the parasite larval stages. Marine mammals are the primary hosts, with the adult stage developing in the stomach and intestine (Laffon-Leal et al, 2000). The participation of cephalopods, shrimp, and crustaceans as intermediate hosts is important for the development of the L2 larvae (Pekmezci & Yardimci, 2019). Marine fish participate as paratenic host carriers of the L3, which are located in the gastrointestinal tract before migrating to the celomic cavity. The L3 can be free, cystic, or penetrate the internal tissues and epaxial muscle. The life cycle is completed when the infested fish are ingested by marine mammals, allowing the L4 stages to develop (Castellanos et al, 2017)
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