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Pseudobicotylophora atlantica n gen, n sp , parasite of Trachinotus spp and redescription of Bicotylophora trachinoti



Pseudobicotylophora atlantica n gen, n sp , parasite of Trachinotus spp and redescription of Bicotylophora trachinoti



Revista Brasileira de Parasitologia Veterinaria 3(2): 99-108, 1994 ( )



Pseudobicotylophora atlantica n. gen., n. sp. is described from the gills of Trachinotus carolinus (L., 1766) and from T. marginatus Cuvier, 1832 captured at Barra da Lagoa, Florianopolis, State of Santa Catarina, and from T. carolinus captured at Itacuruca and Pedra de Guaratiba, Baia de Sepetiba, State of Rio de Janeiro, Brazil. Other geographical records for P. atlantica n. gen., n. sp. from T. carolinus are: Florida, USA; Chesapeake Bay, MD, USA; Mexican coast of the Gulf of Mexico; marine tanks in Venezuela; and Baia da Guanabara, coast of Rio de Janeiro, Brazil. Other hosts and localities are: T. palometa Regan, 1903, from the coast of Uruguay and T. rhodopus Gill, 1863, from the Pacific coast of Mexico. Bicotylophorinae Yamaguti, 1963 is elevated to the family status and the diagnoses of the type genus, Bicotylophora Price, 1936, is amended. The genus Bicotylophora is characterized by having: 1. the buccal organs with 5-6 loculi, 2. the genital atrium armed with three groups of thin spines (as in B. trachinoti), with the blade almost straight, one group central and posterior, and the other two groups bilateral and anterior, without large, hook-like spines or two large, needle-like spines (as in S. baen), with two smaller bundles of needle-like spines, 3. the copulatory organ armed with two bundles of bilateral, thin, needle-like spines (as in B. trachinoti) or a pair of large, needle-like spines associated with six (three on each side) smaller, thin, straight spines (as in B. baen), 4. 30-50 testes, and 5. the vagina walls with sclerotized ridges. Bicotylophora trachinoti (MacCallum, 1921), is redescribed, based on the type specimens. The new genus Pseudobicotylophora is characterized by having: 1. the buccal organs with 4-5 loculi, 2. the genital atrium armed with two groups of thin spines, with the blade almost straight, and two pairs of, dissimilar, large, hook-like spines, 3. the copulatory organ armed with one bundle of thin spines and a pair of similar, hook-like spines, different from those of the genital atrium, 4. approximately 20 testes, and 5. the vagina with two pairs of muscular lobes.

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