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Morphological aspects of testes and sperm ultrastructure in the “symphyta” Digelasinus diversipes kirby 1882 (hymenoptera: Argidae: Dielocerinae) by Jane Moreira; Vinícius Albano Araújo; José Lino-neto is a Biochemistry, Genetics and Molecular Biology article available to read on EtoBox.

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## Abstract In __Digelasinus diversipes,__ spermatozoa are maintained in bundles, with 74 spermatozoa on average, in the seminal vesicle. These spermatozoa are very short (20 μm) and consist of a head and flagellum. The head includes an acrosome (perforatorium covered by the acrosomal vesicle) and a nucleus. A regular electron‐lucent region separates the acrosomal vesicle from the perforatorium, which is inserted parallel to the anterior ending of the nucleus. The small flagellum is composed of two symmetrical mitochondrial derivatives, a centriolar adjunct, an axoneme (9 + 9 + 2), and two accessory bodies. The centriolar adjunct begins above the posterior end of the nucleus and ends covering the anterior tip of two mitochondrial derivatives. In the terminal region of the axoneme, the central microtubules terminate first. The presence of a subacrosomal space, a short mitochondrial derivative diameter, and a short spermatodesm is the ultrastructure characteristics of spermatozoa shared by all “symphyta” species. Differences in the insertion of the perforatorium into the nucleus and the position of the centriolar adjunct distinguish Dielocerinae and the Arginae studied previously. Th

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Author

Jane Moreira; Vinícius Albano Araújo; José Lino-neto

Publisher

John Wiley and Sons; Wiley (John Wiley & Sons); John Wiley & Sons Inc.; Wiley (ISSN 1059-910X)

Published

2011

Language

EN

Field

Biochemistry, Genetics and Molecular Biology (Life Sciences)