Abstract
Gotocotyla acanthura (Parona & Perugia, 1896) Meserve, 1938 collected from the gills of Pomatomus saltatrix from the coast of the state of Rio de Janeiro state was analyzed using scanning electron microscopy (SEM). The study demonstrated the presence of a buccal cavity, a genital atrium on the ventral surface and a muscular structure on the dorsal surface at the level of the body constriction. An elongated haptor with 80 to 120 pedunculated clamps symmetrically distributed in two rows, with rib-like thickenings and a curved lappet bearing a pair of hooks at the posterior extremity of the body were also observed. The cirrus could be seen protruding from the genital atrium, armed with pectinate spines along its length and presenting up to eight pointed spines around the genital atrium.
Highlights
Gotocotyla acanthura (Parona & Perugia, 1896) Meserve, 1938 collected from the gills of Pomatomus saltatrix from the coast of the state of Rio de Janeiro state was analyzed using scanning electron microscopy (SEM)
The specimens of G. acanthura presented an elongated body that was constricted near the anterior extremity, with a haptor in the posterior portion as an extension of the body (Figure 1a and Figure 2e)
Examination of the tegument of G. acanthura in the present study showed that the everted cirrus with pectinate spines and the muscular structure on the dorsal surface of the body elucidated the morphological features
Summary
Gotocotyla acanthura (Parona & Perugia, 1896) Meserve, 1938 collected from the gills of Pomatomus saltatrix from the coast of the state of Rio de Janeiro state was analyzed using scanning electron microscopy (SEM). Hayward and Rohde (1999) did not observe the lateral vaginae described by Lebedev (1984) and synonymized G. travassosi with G. acanthura (Parona & Perugia, 1896) Meserve, 1938, which Ultrastructural data obtained from SEM studies on specimens of G. acanthura collected from P. saltatrix were used to provide detail and extend the current knowledge of the morphology of this species.
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