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Behavior of centrioles during meiosis in the male silkworm, Bombyx mori (Lepidoptera) by Naoko Yamashiki; Naoko Kawamura is a Biochemistry, Genetics and Molecular Biology article available to read on EtoBox.

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The behavior of centrioles during eupyrene and apyrene meiosis was examined in the silkworm, __Bombyx mori__, by transmission electron microscopy and indirect immunofluorescence for tubulin. In eupyrene spermatocytes the centrioles, accompanied by axonemes, attached temporarily to the nucleus at diplotene, then detached from the nucleus in diakinesis. After the separation, a beret‐shaped structure consisting of a double membrane covered the proximal region of the pair of centrioles. The structure disappeared after breakdown of the nuclear membrane. The centriole, with the axoneme, reattached to the nucleus at telophase I. The process was repeated during meiosis II until the centrioles maintained their nuclear attachment in newly developed spermatids. In stark contrast to their eupyrene counterparts, apyrene spermatocytes were conspicuously devoid of any attachment of the centrioles to the nucleus. These eupyrene‐specific and apyrene‐specific relationships were consistently and repeatedly found between the nuclear membrane and centrioles, giving rise to suspicion that the behavioral phenomena may be related to differentiation of the dimorphic sperm types.

Who reads Behavior of centrioles during meiosis in the male silkworm, Bombyx mori (Lepidoptera)?

Author

Naoko Yamashiki; Naoko Kawamura

Publisher

John Wiley and Sons; Wiley (Blackwell Publishing); Blackwell Publishing Inc.; Wiley (ISSN 0012-1592)

Published

1998

Language

EN

Field

Biochemistry, Genetics and Molecular Biology (Life Sciences)