The head region of 72 bullet tunaAuxis rocheifrom the western MediterraneanSea (south-east Spain and the Strait of Gibraltar) was examined for parasites.Seven metazoan species were found in the fish from south-east Spain: threemonogeneans, two trematodes and two copepods, whereas only three specieswere isolated in the fish from the Strait of Gibraltar. A comparison of the levelsof infection of the parasites according to fish size in south-east Spain showed thatthe prevalence ofDidymozoon auxisand the mean abundance ofAllopseudaxinemacrovawere higher in the larger hosts (range of fork length¼38 – 44 cm) than inthe smaller ones (33 – 37 cm). A comparison of the parasite infections according togeographical region showed that the mean abundances of Nematobothriinaegen. sp. andCaligus bonitowere higher in fish from south-east Spain than in thosefrom the Strait of Gibraltar. A comparison of the parasite fauna ofA. rocheifromthe Mediterranean Sea with the published data onAuxisspp. from the Atlantic,Indian and Pacific Oceans revealed the closest similarity between theMediterraneanA. rocheiand the AtlanticA. thazard.
Metazoan parasites in the head region of the bullet tuna Auxis rochei (Osteichthyes: Scombridae) from the western Mediterranean Sea / Mele, S; Saber, S; Gómez Vives, Mj; Garippa, Giovanni; Alemany, F; Macías, D; Merella, P.. - In: JOURNAL OF HELMINTHOLOGY. - ISSN 0022-149X. - 89:(2015), pp. 734-739. [10.1017/S0022149X14000662]
Metazoan parasites in the head region of the bullet tuna Auxis rochei (Osteichthyes: Scombridae) from the western Mediterranean Sea
GARIPPA, Giovanni;
2015-01-01
Abstract
The head region of 72 bullet tunaAuxis rocheifrom the western MediterraneanSea (south-east Spain and the Strait of Gibraltar) was examined for parasites.Seven metazoan species were found in the fish from south-east Spain: threemonogeneans, two trematodes and two copepods, whereas only three specieswere isolated in the fish from the Strait of Gibraltar. A comparison of the levelsof infection of the parasites according to fish size in south-east Spain showed thatthe prevalence ofDidymozoon auxisand the mean abundance ofAllopseudaxinemacrovawere higher in the larger hosts (range of fork length¼38 – 44 cm) than inthe smaller ones (33 – 37 cm). A comparison of the parasite infections according togeographical region showed that the mean abundances of Nematobothriinaegen. sp. andCaligus bonitowere higher in fish from south-east Spain than in thosefrom the Strait of Gibraltar. A comparison of the parasite fauna ofA. rocheifromthe Mediterranean Sea with the published data onAuxisspp. from the Atlantic,Indian and Pacific Oceans revealed the closest similarity between theMediterraneanA. rocheiand the AtlanticA. thazard.File | Dimensione | Formato | |
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