ISSN:
1432-0878
Keywords:
Testis
;
Spermiogenesis
;
Macro-Golgi
;
RER
;
SER
;
Ribosomes
;
Lesuerigobius friesii, Gobius bucchichi (Teleostei)
Source:
Springer Online Journal Archives 1860-2000
Topics:
Biology
,
Medicine
Notes:
Summary Testes of Lesuerigobius friesii and Gobius bucchichi were studied in adult reproductive fish. During the onset of spermatid development, a peculiar system of alternating rough (RER) and smooth (SER) endoplasmic reticular tubules form rings distally to the cell nucleus. The RER tubules are seen to possess up to 12 ribosomes in cross-section, whereas the SER are strongly electron-dense. Nanotubules connect these stacks of tubules to the developing head and tail of the sperm. With ripening of the sperm these tubules disintegrate within the excessive cytoplasm. It seems likely that these are special forms of Macro-Golgi System that possibly provide protamines for the developing sperm.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00309894
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