Metazoan parasite infection in the swordfish, Xiphias gladius, from the Mediterranean Sea and comparison with Atlantic populations: implications for its stock characterization.
Bottom Line: A stepwise Linear Discriminant Analysis of the individual fish examined showed a separation among three groups: one including fish from the Mediterranean Sea (CTS, STS, and IOS); one consisting of fish from the Central South (CS), Eastern Tropical (ET), and Equatorial (TEQ) Atlantic; and a third comprising the fish sampled from the North-West Atlantic (NW); the CN Atlantic sample was more similar to the first group rather than to the other Atlantic ones.Finally, H. corrugatum, A. simplex (s.s.), Rhadinorhynchus pristis, and Bolbosoma vasculosum were related to the fish from the North-West (NW) Atlantic area.These results indicate that some parasites, particularly Anisakis spp. larvae identified by genetic markers, could be used as "biological tags" and support the existence of a Mediterranean swordfish stock.
Affiliation: Department of Public Health and Infectious Diseases, Section of Parasitology, "Sapienza" University of Rome, P.le Aldo Moro, 5, 00185 Rome, Italy.Show MeSH
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Affiliation: Department of Public Health and Infectious Diseases, Section of Parasitology, "Sapienza" University of Rome, P.le Aldo Moro, 5, 00185 Rome, Italy.