Spermiogenesis in the proteocephalidean cestode Proteocephalus torulosus (Batsch, 1786)
1.
SYSNO ASEP
0157615
Druh ASEP
J - Článek v odborném periodiku
Zařazení RIV
J - Článek v odborném periodiku
Poddruh J
Ostatní články
Název
Spermiogenesis in the proteocephalidean cestode Proteocephalus torulosus (Batsch, 1786)
Tvůrce(i)
Bruňanská, Magdaléna (PAU-O) Nebesářová, Jana (PAU-O) Scholz, Tomáš (PAU-O)
Zdroj.dok.
Parasitology Research. - : Springer
- ISSN 0932-0113
Roč. 90, č. 4 (2003), s. 318-324
Poč.str.
7 s.
Jazyk dok.
eng - angličtina
Země vyd.
DE - Německo
Klíč. slova
cestoda ; spermiogenesis ; ultrastructure
Vědní obor RIV
GJ - Choroby a škůdci zvířat, veterinární medicína
CEP
GA524/01/1314 GA ČR - Grantová agentura ČR
GA206/03/1317 GA ČR - Grantová agentura ČR
CEZ
AV0Z6022909 - PAU-O, BC-A
Anotace
Spermiogenesis of the cestode Proteocephalus torulosus (Batsch, 1786) was examined for the first time using transmission electron microscopy. Spermiogenesis begins with the formation of a distal cytoplasmic protrusion, a differentiation zone, at the periphery of the early spermatid. This differentiation zone is lined with cortical microtubules and contains two centrioles. A flagellar bud arises from each centriole, growing later as a free flagellum. Simultaneously, a median cytoplasmic process (MCP) develops distally to the flagella. The two flagella, which are of unequal length, become longer and rotate towards the MCP. The nucleus elongates and when both flagella are fused with the MCP, the nucleus subsequently migrates into the MCP. Finally, the advanced spermatids detach from a condensing residual cytoplasm at the level of the arching membranes.
