spermiogenesis


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Related to spermiogenesis: spermiation, Spermatocytogenesis

spermiogenesis

 [sper″me-o-jen´ĕ-sis]
the second stage in the formation of spermatozoa, in which the spermatids transform into spermatozoa.

sper·mi·o·gen·e·sis

(sper'mē-ō-jen'ĕ-sis),
That segment of spermatogenesis during which immature spermatids shed much of their cytoplasm and develop a flagellum and acrosomal granule, becoming, through this process, sperms.
[sperm- + G. genesis, origin]

spermiogenesis

/sper·mio·gen·e·sis/ (sper″me-o-jen´ĕ-sis) the second stage in the formation of spermatozoa, when spermatids transform into spermatozoa.

spermiogenesis

(spûr′mē-ō-jĕn′ĭ-sĭs)
n.
Transformation of a spermatid into a spermatozoon.

sper′mi·o·ge·net′ic (-jə-nĕt′ĭk) adj.

spermiogenesis

sper·mi·o·gen·e·sis

(spĕr'mē-ō-jen'ĕ-sis)
That segment of spermatogenesis during which immature spermatids are transformed into elongated sperms.
[sperm- + G. genesis, origin]

spermiogenesis

the second stage in the formation of spermatozoa, in which the spermatids transform into spermatozoa.
References in periodicals archive ?
Fine structure of spermiogenesis in eastern Pacific species of hagfish (Myxinidae).
Month N Regressed Recrudescence Spermiogenesis March 2 1 1 0 April 4 2 2 0 May 2 1 1 0 June 3 0 1 2 July 3 0 0 3 August 2 0 0 2 September 13 0 0 13 October 2 0 0 2 Table 2.
Spermiogenesis and modified sperm morphology in the "seepworm" Methanoaricia dendrobranchiata (Polychaeta:Orbiniidae) from a methane seep environment in the Gulf of Mexico: implications for fertilization biology.
870 km apart (Aldridge 1979a, 1979b) as testes are regressed in both populations in spring; spermiogenesis occurs in late summer.
Spermiogenesis, sperm structure and spermatozeugmata in the gymnolaematous bryozoan Electra pilosa (Bryozoa, Gymnolaemata).
The period of spermiogenesis (Table 1) encompassed July through January (winter-summer); epididymides contained sperm.
Only two stages were present: (1) recrudescence in which there is a renewal of germinal epithelium for the next period of sperm formation; seminiferous tubules contain primary, secondary spermatocytes and varying amounts of spermatids and (2) spermiogenesis in which clusters of spermatozoa line the lumina of the seminiferous tubules and several rows of metamorphosing spermatids are present.
Some authors have shown that vacuole is the consequence of chromatin condensation in spermiogenesis.