(a) Preleptotene number/cross-section Control 22.82 [+ or -] 2.11 Albizia lebbeck bark extract 8.93 [+ or -] 0.64** (b) Pachytene number/cross-section Control 35.40 [+ or -] 3.37 Albizia lebbeck bark extract 12.10 [+ or -] 0.88** (c)
Secondary spermatocytes number/cross-section Control 67.87 [+ or -] 5.86 Albizia lebbeck bark extract 19.30 [+ or -] 2.08** (d) Rounded spermatides number/cross-section Control 30.83 [+ or -] 2.18 Albizia lebbeck bark extract 8.09 [+ or -] 0.57** Values are mean [+ or -] SEM (n = 10); ** P<0.001 vs Control.
Class II Early Maturation (146.427 [+ or -] 5.694 [micro]m): Tubules in the distal, middle and proximal areas show a continuous germinal epithelium, which is 34.81 [micro]m in height, [+ or -] 1.281 consisting of germ cysts in all stages of development (spermatogonia, primary and
secondary spermatocytes and spermatids).
Primary and
secondary spermatocytes and spermatids were also present in both fish.
tuberosum treatment, effects on
secondary spermatocytes and round spermatids was assessed, elongated spermatids at 14 days treatment, spermiation and sperm transit through epididymis at 7 days treatment (Pina-Guzman et al.
Hence, a significant reduction in spermatogonia, spermatids and
secondary spermatocytes was observed in the TD group.
The FSH is responsible for the development of spermatogonia to
secondary spermatocytes through different stages namely spermatogonia, spermatids, sertoli cells and
secondary spermatocytes.
Once meiosis I is completed (layer four; stage IV),
secondary spermatocytes develop.
Increase in percentage of abnormal seminiferous tubules along with the decline in number of spermatogonia, primary spermatocytes,
secondary spermatocytes and spermatids probably correspond to the decrease in testosterone production or inhibition of pituitary gonadotropin secretion, which resulted in disruption of spermatogenesis (Raji and Bolarinwa, 1997).
Primary spermatocytes,
secondary spermatocytes, spermatids, and differentiating spermatozoa extend, in that order, from the gonadal wall luminally between NPs (Fig.
Analysis of
secondary spermatocytes (MII configurations) was complicated by the possible number and morphologies of the elements.
Primary spermatocytes complete the first divisions of the meiosis that produces
secondary spermatocytes. Secondary
Secondary spermatocytes are smaller than primary spermatocytes spermatocytes.
Primary and
secondary spermatocytes were recognized in the inner layers of the tubules.