Thelohanellus bicornei sp N. (Myxosporea, Bivalvulida) a gill parasite of Labeo coubie, Ruppel, 1832 (Osteichthyen Cyprinidae) from Burkina Faso, West Africa

摘要

THELOHANELLUS BICORNEI SP. N. (MYXOSPOREA, BIVALVULIDA) A GILL PARASITE OF LABEO COUBIE, RUPPEL, 1832 (OSTEICHTHYEN CYPRINIDAE) FROM BURKINA FASO, WEST AFRICA Thelohanellus bicornei n. sp. (Myxosporea, Bivalvulida) is described from gill of Lobeo coubie (Ruppel, 1832) (Osteichthyen, Cyprinidae) in Burkina Faso, West Africa. The cysts are small and their length is 150 to 350 mum. White, linked together they are rounded shape. The spores are ovoids with smooth valvar surface. Their posterior end is rounded and their anterior part shows two "horns like" expansions. Spores measured 13,5 +/- 0,56 (13-14) pm in length and 8,43 +/- 0,49 (8-9) mum in width. Horns length is I to 1,5 pm long, Polar capsule is piriform, it's length is 7,24 +/- 0,45 mum and the width 3,75 +/- 0,32 mum. The polar filament formed 10 turns.