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Ultrastructure of the spermatozoon of Bothriocotyle SP. (Cestoda:Bothriocephalidea), A parasite of Schedophilus velainii (Sauvage,1879) (Perciformes:Centrolophidae) in Senegal

The mature spermatozoon of Bothriocotyle sp. is filiform and tapered at both extremities. It possesses 2 axonemes of unequal length, showing the 9 + “1” pattern of Trepaxonemata. The anterior extremity exhibits a crest-like body. Thereafter, the crest-like body disappears, and the first axoneme is surrounded by a ring of cortical microtubules (about 27 units) that persist until the appearance of the second axoneme. This ring of cortical microtubules is characteristic only for species of Bothriocephalidea and represents a very useful phylogenetic Character. The spermatozoon cytoplasm is slightly electron-dense and contain numerous electron-dense granules of glycogen in several regions. The anterior and posterior extremities of the spermatozoon lack cortical microtubules. The posterior extremity of the spermatozoon of Bothriocotyle sp. possesses a nucleus and a disorganized axoneme, which also characterizes spermatozoa of the Echinophallidae studied to date.


Auteur(s) : Aïssatou BA, Yann Quilichini, Papa Ibnou Ndiaye, Cheikh Tidiane BA, Bernard Marchand
Pages : 502-508
Année de publication : 2012
Revue : Journal of Parasitology
N° de volume : 98
Type : Article
Statut Editorial : Revue scientifique
Mise en ligne par : BA Aïssatou