Schistosoma mansoni check for this species in other resources - reproductive system abnormalities - adult worms - trematode - anorchism - confocal laser scanning microscopy"/>
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Memórias do Instituto Oswaldo Cruz
Fundação Oswaldo Cruz, Fiocruz
ISSN: 1678-8060
EISSN: 1678-8060
Vol. 98, No. 3, 2003, pp. 361-365
Bioline Code: oc03081
Full paper language: English
Document type: Research Article
Document available free of charge

Memórias do Instituto Oswaldo Cruz, Vol. 98, No. 3, 2003, pp. 361-365

 en Reproductive System Abnormalities in Schistosoma mansoni check for this species in other resources Adult Worms Isolated from Nectomys squamipes check for this species in other resources (Muridae: Sigmodontinae): Brightfield and Confocal Laser Scanning Microscopy Analysis
Renata Heisler Neves; Michele Costa-Silva; Elaine Machado Martinez; Carla de Lamare Biolchini; Henrique Leonel Lenzi; Delir Corrêa Gomes & José Roberto Machado-Silva

Abstract

Schistosoma mansoni check for this species in other resources adult worms with genital anomalies isolated from Nectomys squamipes check for this species in other resources (Muridae: Sigmodontinae) were studied by confocal laser scanning microscopy under the reflected mode. One male without testicular lobes (testicular agenesia/anorchism) and two females, one with an atrophied ovary and another with 17 uterine eggs, were identified. The absence of testicular lobes occurred in a worm presenting otherwise normal male adult characteristics: tegument, tubercles and a gynaecophoric canal with spines. In both female specimens the digestive tube showed a vacuolated appearance, and the specimen with supernumerary uterine eggs exhibited a developing miracidium and an egg with a formed shell. The area of the ventral sucker was similar in both specimens however the tegument thickness, ovary and vitelline glands of the specimen with the atrophied ovary were smaller than those of the one with supernumerary eggs. These reported anomalies in the reproductive system call attention to the need to improve our understanding of genetic regulation and the possible role of environmental influences upon trematode development.

Keywords
Schistosoma mansoni check for this species in other resources - reproductive system abnormalities - adult worms - trematode - anorchism - confocal laser scanning microscopy

 
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