Heteronybelinia Palm, 1999

Jr, Joaber Pereira & Boeger, Walter A., 2005, Larval tapeworms (Platyhelminthes, Cestoda) from sciaenid fishes of the southern coast of Brazil, Zoosystema 27 (1), pp. 5-25 : 7

Genus Heteronybelinia Palm, 1999

Heteronybelinia nipponica ( Yamaguti, 1952) ( Fig. 1 )

HOSTS. — Menticirrhus americanus (NH) (LH = 39.7; P = 2.04; MI = 1.0; MA = 0.02); Umbrina canosai (NH) (LH = 11.9; P = 0.86; MI = 1.0; MA = 0.01).

SITE OF INFECTION. — Coelomic cavity.

Cestoda (Platyhelminthes) of Sciaenidae from Brazil

DESCRIPTION (based on two specimens)

Scolex craspedote, 0.75-0.88 long. Maximum width 0.25-0.33 at the posterior level of the bothridia. Four bothridia 0.32-0.41 long, overlapping apices of bulbs. Internal margins of bothridia densely covered by long spines, other groupings of cuticular spines spread throughout surface of tegument, and sensory fossette near the margin at the center of each bothridium (observed in a single specimen). Tentacle sheath long, irregularly coiled. Bulbs 0.17-0.30 long, 0.04-0.05 wide. Velum 0.06-0.07 long; appendix 0.13-0.15 long. Hooks in continuous spirals. Basal row with uncinate hooks 6-7 μm long, base 2-3 μm wide. Rows 2-4 with similar, “serpe à bec” hooks, longer, and more robust than hooks of other rows, forming a basal armature. Hooks of third row larger than others, 22-25 μm long, base 4-5 μm wide. Hooks of the fifth row rosethorn shaped, 22 μm (20-25) long, base 9 μm (8- 10) wide.

REMARKS

This species was originally described as Nybelinia nipponica by Yamaguti (1952) from Japan. Dollfus (1960) describes Nybelinia rougetcampanae based on a single larva collected from Liosaccus cutaneus (Günter, 1870) , captured off the coast of Dakar. This species was later transferred to Heteronybelinia by Palm (1999). The adult form was described by São Clemente & Gomes (1992) based on six specimens collected from Sphyrna lewini (Cuvier, Griffith & Smith, 1834) from the coast of Rio Grande do Sul. Knoff (2001) reports adults of H. rougetcampanae from Sphyrna zigaena (Linnaeus, 1758) and H. nipponica from Carcharinus signatus (Poey, 1 8 6 8) f r o m t h e c o a s t o f t h e s t a t e o f S a n t a Catarina as distinct species. Palm & Walter (2000) considered H. rougetcampanae a junior synonym of H. nipponica .

Figures

FIG. 1. — Heteronybelinia nipponica (Yamaguti, 1952); A, larva in toto; B, bothridium; C, basal armature; D, hooks of the first seven