Molecular identification and epidemiological data of Anisakis spp. (Nematoda: Anisakidae) larvae from Southeastern Pacific Ocean off Peru

Rosa Martínez-Rojas, Aarón Mondragón-Martínez, Estrellita Rojas De-Los-Santos, Lidia Cruz-Neyra, Enrique García-Candela, Abraham Delgado-Escalante, J. R. Sanchez-Venegas

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3 Scopus citations


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.

Original languageEnglish
Pages (from-to)138-144
Number of pages7
JournalInternational Journal for Parasitology: Parasites and Wildlife
StatePublished - Dec 2021

Bibliographical note

Funding Information:
This work was financed by the Vice-Rector for Research of the Universidad Nacional Mayor de San Marcos ( UNMSM ) through funding CON-CON 2014 Nº 141001241 and 2015 Nº 151001221, Lima, Peru.

Publisher Copyright:
© 2021 The Authors


  • Anisakiasis
  • Anisakis pegreffii
  • Peruvian sea
  • Teleost fish
  • Zoonosis


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