A new description of the reproductive system of Schistosoma mansoni (Trematoda: Schistosomatidae) analyzed by confocal laser scanning microscopy

dc.creatorNeves, Renata Heisler
dc.creatorBiolchini, Carla de Lamare
dc.creatorSilva, José Roberto Machado
dc.creatorCarvalho, Jorge José
dc.creatorBranquinho, Thiago Braga
dc.creatorLenzi, Henrique Leonel
dc.creatorHulstijn, Maarten
dc.creatorGomes, Delir Corrêa
dc.date2019-12-19T10:51:27Z
dc.date2019-12-19T10:51:27Z
dc.date2005
dc.date.accessioned2023-09-26T20:35:44Z
dc.date.available2023-09-26T20:35:44Z
dc.identifierNEVES, Renata Heisler et al. A new description of the reproductive system of Schistosoma mansoni (Trematoda: Schistosomatidae) analyzed by confocal laser scanning microscopy. Parasitology Research, v. 95, p. 43-49, 2005.
dc.identifier0932-0113
dc.identifierhttps://www.arca.fiocruz.br/handle/icict/38696
dc.identifier10.1007/s00436-004-1241-2
dc.identifier1432-1955
dc.identifier.urihttps://repositorioslatinoamericanos.uchile.cl/handle/2250/8860251
dc.descriptionClassical schemes of the adult Schistosoma mansoni reproductive system have been described. In our study, whole adult worms derived from unisexual or mixed infections and stained with carmine chlorine were virtually and tomographically analyzed under confocal laser scanning microscopy. We found that: (1) there were morphological differences in the ovary, vitteline glands and testicular lobes between specimens derived from unisexual or mixed infections; (2) there was always a single lobed ovary (three or four lobes), presenting differentiation from the anterior to the posterior lobes, where the most mature oocytes were located; (3) the proximal segment of oviduct was connected to an ampullary dilatation, full of tailed spermatozoa, characterizing a seminal receptacle; (4) there was no long vitelline duct, but a short one that begins at the end of the proximal region of the vitelline gland; (5) long cells of Mehlis' gland placed radially around the ootype were not observed. Otherwise, the ootype was only lined by thick cuboidal epithelial cells with plaited bases and nuclei with flabby chromatin, making a clear distinction from the uterine epithelium. This morphological feature suggests that each cell represents a gland. (6) In coupled males, the specimens located inside the gynaecophoric canal had smaller testicular lobes, suckers, and body length and width when compared to their partners. Our results show that the reproductive system does not follow a unique pattern within flatworms. Due to its better resolution, confocal laser scanning microscopy, using a reflected mode with tomographic sections, allows new interpretations, modifying the adopted and current descriptions of the internal morphological structures of S. mansoni adult worms.
dc.description2025-01-01
dc.formatapplication/pdf
dc.languageeng
dc.publisherSpringer Verlag (Germany)
dc.rightsrestricted access
dc.subjectSchistosoma mansoni
dc.subjectSistema reprodutivo
dc.subjectMicroscopia confocal de varredura a laser
dc.subjectSchistosoma mansoni
dc.subjectReproductive system
dc.subjectConfocal laser scanning microscopy
dc.titleA new description of the reproductive system of Schistosoma mansoni (Trematoda: Schistosomatidae) analyzed by confocal laser scanning microscopy
dc.typeArticle


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