Metazoan parasites in the head region of the bullet tuna Auxis rochei (Osteichthyes: Scombridae) from the western Mediterranean Sea
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Autor/esMele, S. (Salvatore); Saber-Rodríguez, S. (Sámar); Gómez-Vives, M.J. (María José); Garippa, G. (Giovanni); Alemany, F. (Francisco); Macías-López, A.D. (Ángel David); Merella, P. (Paolo)
Versión del editorhttp://journals.cambridge.org/action/displayAbstract?fromPage=online&aid=9992389&fulltextType=RA&fileId=S0022149X14000662
The head region of 72 bullet tuna Auxis rochei from the western Mediterranean Sea (south-east Spain and the Strait of Gibraltar) was examined for parasites. Seven metazoan species were found in the fish from south-east Spain: three monogeneans, two trematodes and two copepods, whereas only three species were isolated in the fish from the Strait of Gibraltar. A comparison of the levels of infection of the parasites according to fish size in south-east Spain showed that the prevalence of Didymozoon auxis and the mean abundance of Allopseudaxine macrova were higher in the larger hosts (range of fork length ¼ 38–44 cm) than in the smaller ones (33–37 cm). A comparison of the parasite infections according to geographical region showed that the mean abundances of Nematobothriinae gen. sp. and Caligus bonito were higher in fish from south-east Spain than in those from the Strait of Gibraltar. A comparison of the parasite fauna of A. rochei from the Mediterranean Sea with the published ...
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