Use este identificador para citar ou linkar para este item:
https://locus.ufv.br//handle/123456789/24407
Tipo: | Artigo |
Título: | The peculiar structure of the flagellar axoneme in Coccinellidae (Insecta–Coleoptera) |
Autor(es): | Lino-Neto, José Dias, Glenda Folly, Camilla Dallai, Romano Mercati, David Lupetti, Pietro |
Abstract: | The ultrastructure of the complex organisation of the spermatozoa in Harmonia axyridis and Adalia decempunctata (Coccinellidae) was studied, with particular emphasis on the origin of the anterior shifting of the axonemal structure, which becomes parallel to the nucleus in the sperm flagellum. In studying the spermiogenesis, a centriolar remodelling was observed with the long centriole, present in the early spermatids, transformed in the spermatozoa into an exceptionally long and narrowed basal body (about 0.16 × 3.5–4.0 μm long) displaying a 9 + 0 microtubular pattern in the proximal part and a 9 + 2 pattern in the following part; this is a characteristic not observed in any other pterygotan insect. The sperm also have a very long acrosome surrounded by a dense layer of material extending along the whole basal body. These two uncommon features were discussed in the light of sperm movement. |
Palavras-chave: | Coleoptera Coccinellidae Insect spermatozoa Sperm ultrastructure Insect spermiogenesis |
Editor: | Arthropod Structure & Development |
Tipo de Acesso: | Elsevier B. V. |
URI: | https://doi.org/10.1016/j.asd.2018.11.004 http://www.locus.ufv.br/handle/123456789/24407 |
Data do documento: | 2018 |
Aparece nas coleções: | Artigos |
Arquivos associados a este item:
Arquivo | Descrição | Tamanho | Formato | |
---|---|---|---|---|
artigo.pdf Until 2100-12-31 | Texto completo | 13,53 MB | Adobe PDF | Visualizar/Abrir ACESSO RESTRITO |
Os itens no repositório estão protegidos por copyright, com todos os direitos reservados, salvo quando é indicado o contrário.