Nouvelles observations sur les Cestodes Tétrarhynques de la collection du Musée Océanographique de Monaco

Abstract

Les caractères de l'armature des trompes de Sphyriocephalus alberti Guiart 1935 montrent que cette espèce est identique à Sphyriocephalus viridis (Wagener 1854). En outre, la disposition des crochets rappelle curieusement celle du type hétéracanthe.

Revision of the family Sphyriocephalidae Pintner, 1913 (Cestoda: Trypanorhyncha), with the description of Heterosphyriocephalus encarnae n. sp. and redescriptions of two species of Sphyriocephalus

“…According to this author, this feature could only be detected in the distal part of the tentacle, since the half-spiral rows were not distinguishable in the early metabasal armature. Herein we confirm this pattern observed by Bussieras [3] and determine that S. viridis possesses a typical heteroacanthous armature, with half-spiral rows starting on the antibothrial surface and terminating on the bothrial surface. This characteristic is only visible in vastly extended tentacles, since in the early metabasal armature hooks are fairly small and close to one another which makes it hard to observe this pattern.…”

“…Additional localities: Mediterranean Sea: France: off Calvi [2]; Italy: off Naples [23] and Trieste [23]; Algeria: off Bou Ismaïl (Castiglione sensu [3]) and Dellys (present study); Spain: off Barcelona (present study) and Majorca (present study); Atlantic 0.5 ± 0.2; n = 5). Scolex peduncle covered with acicular filitriches.…”

“…Description (Figs. [1][2][3][4] [Based on 13 whole mounts of fully mature worms, 1 immature worm and 1 plerocercoid; 4 worms preserved in ethanol; 2 specimens used for SEM; 6 tentacles detached from scolices and placed in glycerine or mounted in Canada balsam; 6 serialsectioned proglottids.] Cestodes anapolytic, 9.5-34.0 (18.3 ± 7.0; n = 12) mm long (Fig.…”

“…Pintner [23] redescribed the species, allocated it within the genus Sphyriocephalus and erected the family Sphyriocephalidae. Although later authors reviewed the work of Wagener [36] and Pintner [23] and addressed different features of the morphology of this species [1,3,7], the description remained incomplete and several morphological characteristics were still unknown. The present work provides the most advanced redescription of this species and accurately addresses the features that until now have remained unknown or dubious.…”

“…Although this species was originally thought to have an homeoacanthous armature pattern, Bussieras [3] re-examined the type specimens of S. alberti (now S. viridis) deposited in the Oceanographic Museum in Monaco and noted that the metabasal armature follows a typical heteroacanthous pattern. According to this author, this feature could only be detected in the distal part of the tentacle, since the half-spiral rows were not distinguishable in the early metabasal armature.…”