Quelques espèces de cestodes Tétrarhynques de la côte Atlantique des États Unis, dont l'une n'était pas connue à l'état adulte

Abstract

not available

Review of the genus Progrillotia Dollfus, 1946 (Cestoda: Trypanorhyncha), with a redescription of Progrillotia pastinacae Dollfus, 1946 and description of Progrillotia dasyatidis sp. n.

“…There are no supernumerary hooks. In P. louiseuzeti, Dollfus (1969, fig. 83) noted that the opposite intercalary rows join in the midline of the tentacle and that there was no separate longitudinal band of hooks (Dollfus, 1969, p. 538).…”

“…The new species differs from congeners in having, on the tentacles, a single rather than two rows of intercalary hooks and fewer testes. The generic definition is emended based upon the new species, the redescription of P. pastinacae Dollfus, 1946 and re-examination of the type specimen of P. louiseuzeti Dollfus, 1969. Important additional characters noted are that the tentacular hooks are solid, a prebulbar organ is present and that there are gland cells attached to the retractor muscle within the bulb.…”

“…Subsequently, Dollfus (1969) added a second species, P. louiseuzeti, collected from Dasyatis violacea (Bonaparte, 1832), from Sète, on the Mediterranean coast of France. Dollfus (1969) elevated Progrillotia to generic rank, noting that in addition to the disposition of the testes anterior to the ovary, the two species of Progrillotia possessed an armature that differed from Grillotia in lacking a continuous band of small hooks on the external surface of the tentacle. Both species of Progrillotia were incompletely described and the critical details of the distribution of hooks on the external surface of the metabasal region of the tentacle were not described.…”

Eutetrarhynchid trypanorhynchs (Cestoda) from elasmobranchs off Argentina, including the description of Dollfusiella taminii sp. n. and Parachristianella damiani sp. n., and amended description of Dollfusiella vooremi (São Clemente et Gomes, 1989)

“…Among the species with homeomorphous hooks in the metabasal armature, D. taminii differs from D. carayoni (Dollfus, 1942), D. micracantha (Carvajal, Campbell et Cornford, 1976) D. geraschmidti (Dollfus, 1974), D. michiae (Southwell, 1929), D. musteli (Carvajal, 1974), D. schmidti (Heinz et Dailey, 1974), D. spinifer (Dollfus, 1969), and D. tenuispinis (Linton, 1890) by possessing falcate hooks, instead of uncinate or spiniform hooks. (Heinz et Dailey, 1974) lacks the initial rows of uncinate hooks and the basal swelling with billhooks that are present in D. taminii.…”

“…Several species of Parachristianella have been reported from the Pacific and North Atlantic Oceans, but no previous record exists from the South Atlantic (Dollfus 1969, Beveridge 1990, Campbell and Beveridge 2007.…”