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Nouveaux Amphibdellatidae (Platyhelminthes, Monogenea, Monopisthocotylea) parasites des Torpedinidae (Pisces, Elasmobranchii) de Méditerranée

Fadila TAZEROUTI, Lassâd NEIFAR & Louis EUZET

fr Zoosystema 28 (3) - Pages 607-616

Published on 29 September 2006

New Amphibdellatidae (Platyhelminthes, Monogenea, Monopisthocotylea), parasites of Torpedinidae (Pisces, Elasmobranchii) from the Mediterranean

Two new species of the genus Amphibdelloides Price, 1937 (Monogenea, Amphibdellatidae), A. kechemirae n. sp. from Torpedo marmorata Risso, 1810 and A. benhassinae n. sp. from T. torpedo (Linnaeus, 1758), are described in Mediterranean (Algeria, France, Tunisia). These gill parasites can be distinguished from the other species of the genus by the morphology and size of the haptorial hooks and of the accessory sclerite of the male copulatory organ. Study of these new species, along with that of Amphibdelloides vallei Llewellyn, 1960 collected from Torpedo marmorata and A. maccallumi (Jonhston & Tiegs, 1922) collected from T. nobiliana Bonaparte, 1835, allows us to propose an amended diagnosis of the genus Amphibdelloides including characters “ovary lopping right intestine caecum” and “vas deferens lopping left intestine caecum”. The amphibdellids parasites of Torpedo Houttuyn, 1764 in the Mediterranean are characterized by an oioxenic specificity.

Keywords :

Platyhelminthes, Monogenea, Amphibdellatidae, Amphibdelloides, Elasmobranchii, Torpedinidae, Torpedo, parasites, gills, new species.

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