Premium
A New Type of Manchette Structure in Spermatids of Culex tigripes (Culicidae)
Author(s) -
Ndiaye Mady,
Mattei Xavier,
Siau Yves
Publication year - 1994
Publication title -
acta zoologica
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.414
H-Index - 37
eISSN - 1463-6395
pISSN - 0001-7272
DOI - 10.1111/j.1463-6395.1994.tb01205.x
Subject(s) - spermiogenesis , biology , microtubule , nucleus , colchicine , chromatin , microbiology and biotechnology , genetics , dna
In young spermatids of Culex tigripes , microtubules organize a manchette which surrounds the nucleus. When the nucleus elongates, 1–5 expansions appear on the wall of the microtubules. They grow and branch out while the nucleus elongates and chromatin condenses. Expansions are straight or curved in shape. They have the same thickness as the microtubule walls, but they rarely constitute links between microtubules. The manchette disappears naturally at the end of spermiogenesis. The action of colchicine on spermatids leads to the complete disappearance of the microtubules and expansions, and inhibits the lengthening of the nucleus.