Molecular identification and epidemiological data of Anisakis spp. (Nematoda: Anisakidae) larvae from Southeastern Pacific Ocean off Peru
| Autor: | J.R. Sanchez-Venegas, Estrellita Rojas De-Los-Santos, Enrique Garcia-Candela, Lidia Cruz-Neyra, Rosa Martínez-Rojas, Abraham Delgado-Escalante, Aarón Mondragón-Martínez |
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| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Population
Zoology Anisakiasis Anisakis Article Zoonosis Seriolella parasitic diseases Peruvian sea Merluccius gayi education Scomber Larva education.field_of_study biology Trachurus fungi biology.organism_classification Anisakidae Infectious Diseases QL1-991 Anisakis pegreffii Animal Science and Zoology Parasitology Teleost fish |
| Zdroj: | International Journal for Parasitology: Parasites and Wildlife, Vol 16, Iss, Pp 138-144 (2021) International Journal for Parasitology: Parasites and Wildlife |
| ISSN: | 2213-2244 |
| Popis: | The objective of this study is to determine the infection status of nematode larvae and record epidemiological molecular data in commercial fish from the southeast Pacific off the central coast of Peru. Anisakiasis is a fish-borne zoonosis caused by Anisakis larvae, parasites of relevance in the fishery resources that have negative impact on public health. Between January 2012 to December 2014, 345 specimens of four fish species (Trachurus symmetricus murphyi, Scomber japonicus peruanus, Merluccius gayi peruanus and Seriolella violacea) were examined for Anisakis sp. larvae. A total of 997 Anisakis sp. larvae were found in the body cavity of 196 fish (total prevalence 53.7%, total mean intensity 5.08). After morphological analysis, 958 (96.08%) larvae were identified as Type I and 39 (3.92%) as Type II. Specimens were identified by molecular analysis of the mitochondrial cytochrome c oxidase subunit II (cox2) gene, confirming that A. pegreffii is the predominant species and the most important agent of human anisakiasis off the Peru Central Coast. In addition, we revealed the occurrence of A. physeteris (s.l.) in S. japonicus peruanus (P = 18.0%; MI = 2.17). Therefore, the results obtained in the present study improve the knowledge of the occurrence of Anisakis species in the commercial fish from the Southeastern Pacific Ocean, highlighting the importance of considering a potential hazard for humans and the necessity of further research in other fishes of greater preference by the Peruvian population. Graphical abstract Anisakis spp. larvae isolated from the body cavity of marine fish. All larvae were morphologically characterized as Anisakis Type I and II for molecular identification and phylogenetic analysis.Image 1 Highlights • Anisakiasis is a fish-borne zoonosis caused by larvae of the nematode Anisakis sp. present in fish. • The dominant species on the central coast of the Peruvian Sea is A. pegreffii. • A. physeteris (s.l.) was found parasitizing only one host with a low prevalence. • Widespread occurrence of Anisakis sp. in wild sea fish. |
| Databáze: | OpenAIRE |
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