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Fig. 10. Spermatozoa of Callichthys callichthys. a) Spermatozoon in longitudinal section. b and c) Nucleus in longitudinal and cross sections. d) Centriolar arrangement. e to g) Midpiece in longitudinal and transverse sections showing mitochondria, vesicles, and cytoplasmic channel. h and i) Flagellum in longitudinal and cross sections. (a, g, h) X 31500; (b, e) X 23000; (c, f) X 17000; (d, i) X 42000. D: distal centriole; E: electron-dense structure; F: flagellum; N: nucleus; P: proximal centriole; V: vesicles; Asterisk: mitochondria, Arrow: cytoplasmic channel; Arrowhead: lateral membranous compartment.
Published as part of Spadella, Maria A., Oliveira, Claudio & Quagio-Grassiotto, Irani, 2007, Comparative analysis of spermiogenesis and sperm ultrastructure in Callichthyidae (Teleostei: Ostariophysi: Siluriformes), pp. 337-350 in Neotropical Ichthyology 5 (3) on page 348, DOI: 10.1590/S1679-62252007000300014, http://zenodo.org/record/5419345
Biodiversity, Taxonomy
Biodiversity, Taxonomy
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