Untitled - CNR

Marine research at CNRmpthmmpnn nm tabcnnfpcdcmddnndcpcdcnnasf dcnnFigure 4: Spermatozoon of Pagellus bogaraveo. a. Scanning electron micrograph (SEM)of spermatozoa showing the head (h), midpiece (mp) and tail (t). m: mitochondrion.Scale bar: 1 µm. b–f. Transmission electron micrographs (TEM). b. Sagittal longitudinalsection of a spermatozoon showing the ovoid nucleus (n), midpiece (mp) containingone mitochondrion (m), and tail (t). Scale bar: 0.5 µm. c. Sagittal longitudinal sectionthrough the centriolar complex showing the bell-shaped nuclear fossa (nf) containing theproximal (pc) and distal (dc) centrioles. m: mitochondrion. Scale bar: 0.5 µm. d. Apeculiar satellite nuclear notch (nn) shaped like a golf club is located at the level of thedistal centriole (dc). Scale bar: 0.5 µm. e. Cross section through the distal centriole ofthe flagellum, showing alar sheets (as) and Y-shaped bridges (y) connecting the doubletsto the plasma membrane. Scale bar: 0.1 µm. f. The nuclear notch (nn) is located at thelevel of the distal centriole (dc). Scale bar: 0.5 µm. Modified from Maricchiolo et al.[15].2015