PSC = primary spermatocyte; SSC = secondary spermatocyte
; ST = spermatid; SPZ = spermatozoa; SZ = spermatozeugmata.
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
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
Population of preleptotene, pachytene, secondary spermatocytes
and step-19 spermatid were declined by 60.86%, 65.81%, 71.56% and 66.55%, respectively.
Few secondary spermatocytes
with karyolytic nuclei can be seen.
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.