Figures & data
Figure 1. Monthly variation in parameters of the testis and epididymis of the African sideneck turtle (Pelusios castaneus). A: Gonadosomatic index (GSI, %); B: Epididymis mass index (EMI, %); C: Seminiferous tubule diameter (STD, µm); D: Epididymal ductal diameter (EDD, µm); E: Degree of sperm packing of epididymis (SPE); F: Classification of spermatogenic stage (CSS). Notice that the months of the year are represented by their corresponding numerals in the figure above.
Figure 2. Photomicrograph of the testis of Pelusios castaneus. GEC: germinal epithelial cells; L: lumen (February). H&E: haematoxylin & eosin. Scale bar: 25 µm.
Figure 3. Photomicrograph of the testis of Pelusios castaneus. GEC: germinal epithelial cells; SP: spermatozoa (May). H&E: haematoxylin & eosin. Scale bar: 25 µm.
Figure 4. Peak of spermatogenesis in Pelusios castaneus. SP: spermatozoa; TC: interstitial cell (September). H&E: haematoxylin & eosin. Scale bar: 100 µm.
Figure 5. Photomicrograph of the epididymis of Pelusios castaneus showing spermatozoa within the lumen of the duct of the epididymis with efferent ducts (ED) within the lamina propria (LP); PSCE: pseudostratified columnar epithelium; SP: spermatozoa (January). H&E: haematoxylin & eosin. Scale bar: 25 µm.
Figure 6. Photomicrograph of the epididymis of Pelusios castaneus showing spermatozoa within the lumen of the duct of the epididymis with efferent ducts within the lamina propria (LP); SPCE: pseudostratified columnar epithelium; SP: spermatozoa (April). H&E: haematoxylin & eosin. Scale bar: 25 µm.
