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Epidemiology and molecular identification of Anisakis pegreffii (Nematoda: Anisakidae) in the horse mackerel Trachurus trachurus from northern Morocco

Published online by Cambridge University Press:  06 March 2013

N. Abattouy*
Affiliation:
Department of Parasitology, Faculty of Pharmacy, University of Granada, Spain
A. Valero López
Affiliation:
Department of Parasitology, Faculty of Pharmacy, University of Granada, Spain
J. Lozano Maldonado
Affiliation:
Department of Parasitology, Faculty of Pharmacy, University of Granada, Spain
M.H. Benajiba
Affiliation:
Department of Biology, Faculty of Sciences, University Abdel Malek Essâadi, Tetuan, Morocco
J. Martín-Sánchez
Affiliation:
Department of Parasitology, Faculty of Pharmacy, University of Granada, Spain
*
*Fax: +34 958 243862 E-mail: [email protected]

Abstract

Anisakis infection parameters were studied in horse mackerel (Trachurus trachurus) taken from two areas of northern Morocco (Tetouan and Tangier), which showed a mean prevalence of 54.9%. Identification of the ITS1–5.8S–ITS2 fragment by polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) showed A. pegreffii to be the dominant species; no A. simplex s.s. were detected. The presence of A. pegreffii in horse mackerel was not influenced by the sex (P= 0.46) or catch area (Atlantic versus Mediterranean, P= 0.52) of the fish, but was significantly related to their length, weight, liver weight and gonad weight, and to the season of their capture (P< 0.05). A low prevalence (8.6%) and mean intensity (1.0) was detected in the muscle, probably related to the reduced ability of A. pegreffii to penetrate muscle. The risk of the presence of A. pegreffii in the muscle was fivefold higher in fish caught during the summer than during any other season. Susceptible members of the human population can minimize the risk of infection by avoiding the consumption of larger horse mackerel specimens during the summer.

Type
Research Papers
Copyright
Copyright © Cambridge University Press 2013 

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