Light and electronic observations on Henneguya ghaffari (Myxosporea, Bivalvulida) infecting the gills and intestine of Nile perch Lates niloticus (Pisces: Teleostei) from Chad and Senegal

[摘要] ABSTRACT: Henneguya ghaffari Ali, 1999, described for the first time in Egypt, has been found on gills and intestine of Nile perch Lates niloticus L. from Chad and Senegal (Africa). It formed plasmodia which induced lesions of infectedtissues. In fresh state, the spore body was ovoid and its size was 11.07 ± 0.7 (range 11 to 13) x 7.7 ± 0.4 (range 7 to 8) µm. The length of the caudal appendages was 44.2 ± 1.7 (42 to 48) µm. The polar capsules were pyriform, of equal size, with thepolar filament showing 4 coils, and measuring 3.17 ± 0.1 (range 3 to 4) x 2.2 ± 0.1 (range 1 to 2) µm. The total length of the spore was 55.73 ± 1.7 (range 53 to 61) µm. At ultrastructural level, our results confirm that in Henneguya species, thesporoplasm is binucleate and the pansporaoblast is disporous.

[学科分类] 生物科学（综合）

[关键词] Myxosporea;Henneguya ghaffari;Ultrastructure;Fish;Chad;Senegal