Fig. 4 in Luciobarbus capito

Fig. 4. Mothocya renardi (Bleeker, 1857): Electron micrograph of the testis lobes during the male phase: A1, Spermatocyte (4800X); A2, spermatids (9300X); A3, somatic accessory cells and portion of spermatophore (2900X); B1, cross section through spermatozoan head (4800X); B2, longitudinal section through spermatophore (4800X); B3, cross section through spermatozoan tail (6800X); C1, spermatozoan head region (6800X); C2, spermatozoan tail, acrosome and extracellular tubules (6800X); C3, spermatozoan acrosome and tail (18500X); D1, spermatozoan tail surrounded by extracellular tubules (11000X); D2, spermatozoan tail (30000X) showing transverse striations and central lumen (insight: wall of spermatozoan tail with double membrane); D3, a portion of spermatozoan tail showing central lumen filled with electron-dense granules (68000X). Sc: spermatocyte, N: nucleus, M: mitochondria, Pm: plasma membrane, Sd: spermatid, T: tail, H: head, Sac: somatic accessory cell, A: acrosome, Ect: extracellular tubule, Sz: spermatozoa, S: spermatophore, Edg: electron-dense granules, Ts: transverse striations, Dm: double membrane.