Evidence of a procentriole during spermiogenesis in the coccinellid insect Adalia decempunctata (L): An ultrastructural study
| Autor: | David Mercati, Glenda Dias, Pietro Lupetti, Romano Dallai, José Lino-Neto |
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| Rok vydání: | 2017 |
| Předmět: |
0301 basic medicine
Male Centriole Spermiogenesis Evolution sports Insect spermatogenesis and spermiogenesis Spermatocyte Biology Sperm ultrastructure Electron Centriole and procentriole 03 medical and health sciences Procentriole 0302 clinical medicine Behavior and Systematics Microscopy Electron Transmission Microtubule Botany medicine Basal body Transmission Animals Spermatogenesis Ecology Evolution Behavior and Systematics Centrioles Microscopy Ecology technology industry and agriculture Adalia decempunctata General Medicine biology.organism_classification Cell biology sports.league Coleoptera 030104 developmental biology medicine.anatomical_structure Insect Science Ultrastructure Developmental Biology 030217 neurology & neurosurgery |
| Zdroj: | LOCUS Repositório Institucional da UFV Universidade Federal de Viçosa (UFV) instacron:UFV |
| ISSN: | 1873-5495 |
| Popis: | We studied spermatogenesis and spermiogenesis in Adalia decempunctata (L), a beetle of the Coccinellidae family. The spermatocyte exhibits two centrioles which elongate to form a pair of primary cilia. A novel structure, appearing in cross sections as a dense droplet, is observed near the long centriole during spermiogenesis, and is soon accompanied by a procentriole (PCL). PCL structure consists of singlet microtubules, a central tubule and an incomplete cartwheel. The PCL persists until the end of spermiogenesis, when it vanishes together with the dense droplet. The sperm has an exceptionally long basal body and the nucleus is disposed parallel to the flagellar components, a peculiar trait shared by other species of the coccinellid group. The presence of a procentriole suggested by the use of antibodies is discussed. |
| Databáze: | OpenAIRE |
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