Acta Protozool. (1999) 38: 323 - 326

Three New Myxosporidian (Myxozoa: Myxosporea) Parasites of  Freshwater Fishes from Chad (Central Africa)

Boguyana KostoInguE, Malick Fall, Ngor Faye and Bhen Sikina Toguebaye

Laboratory of Parasitology, Department of Animal Biology, Faculty of Sciences and Technologies, University C.A. DIOP of Dakar, Dakar, Senegal

Summary. Examination of freshwater fishes from Chad (Central Africa) revealed the presence of three new species of Myxosporea. They are: Henneguya fusiformis sp. n. in Clarias anguillaris Linné, 1758 (Clariidae) characterized by a fusiform sporal body (32.0 ± 0.83 x 6.16 ± 0.68 µm) and pyriform polar capsules (5.73 ± 0.43 x 3.5 ± 0.5 µm); Thelohanellus citharini sp. n. found in Citharinus citharus Geoffroy St-Hilaire, 1809 (Citharinidae) had pyriform spores (11.07 ± 0.62 x 6.15 ± 0.36 µm) and elongated polar capsules (6.57 ± 0.49 x 3.23 ± 0.42 µm); Thelohanellus ndjamenaensis sp. n. described from Labeo parvus Boulenger, 1902 (Cyprinidae) had ovoid spores (10.28 ± 0.43 x 7.32 ± 0.46 µm) and pyriform polar capsules (4.21 ± 0.4 x 3.21 ± 0.43 µm).

Key words: Central Africa, Chad, freshwater fishes, Henneguya fusiformis sp.n., Myxosporidea, Thelohanellus citharini sp.n., T. ndjamenaensis sp.n.

Address for correspondence: Bhen S. Toguebaye, Department of Animal Biology, Faculty of Sciences and Technologies, University C. A. DIOP of Dakar, Dakar, Senegal; Fax: (221) 825 25 29 or 824 63 18; E-mail: parasito@ucad.refer.sn

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