Abstract：
:Spermiogenesis in Robphildollfusium fractum begins with the formation of a differentiation zone containing: two centrioles, each bearing striated rootlets, nucleus, several mitochondria and an intercentriolar body constituted by seven electron-dense layers. The two centrioles originate two free flagella growing orthogonally to the median cytoplasmic process. Later, the free flagella rotate and undergo proximodistal fusion with the median cytoplasmic process. Nuclear and mitochondrial migrations occur before this proximodistal fusion. Finally, the young spermatozoon detaches from the residual cytoplasm after the constriction of the ring of arched membranes. The spermatozoon of R. fractum exhibits two axonemes of different length of the 9+'1' trepaxonematan pattern, nucleus, two mitochondria, two bundles of parallel cortical microtubules, external ornamentation of the plasma membrane, spine-like bodies and granules of glycogen. Additionally, a shorter axoneme, which does not reach the nuclear region, the presence of an electron-dense material in the anterior spermatozoon extremity and the morphologies of both spermatozoon extremities characterize the mature sperm of R. fractum.
journal_name
C R Bioljournal_title
Comptes rendus biologiesauthors
Bakhoum AJ,Sène A,Ndiaye PI,Bâ CT,Miquel Jdoi
10.1016/j.crvi.2012.06.003subject
Has Abstractpub_date
2012-07-01 00:00:00pages
435-44issue
7eissn
1631-0691issn
1768-3238pii
S1631-0691(12)00158-8journal_volume
335pub_type
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