Reproductive system abnormalities in Schistosoma mansoni adult worms isolated from Nectomys squamipes (Muridae: Sigmodontinae): brightfield and confocal laser scanning microscopy analysis
Mem. Inst. Oswaldo Cruz
;
98(3): 361-366, Apr. 2003. ilus, tab
Article
in English
| LILACS
| ID: lil-340114
ABSTRACT
Schistosoma mansoni adult worms with genital anomalies isolated from Nectomys squamipes (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
Full text:
Available
Index:
LILACS (Americas)
Main subject:
Ovary
/
Schistosoma mansoni
/
Testis
/
Gonadal Dysgenesis
/
Muridae
Type of study:
Prognostic study
Limits:
Animals
Language:
English
Journal:
Mem. Inst. Oswaldo Cruz
Journal subject:
Tropical Medicine
/
Parasitology
Year:
2003
Type:
Article
Affiliation country:
Brazil
Institution/Affiliation country:
Fiocruz/BR
/
Universidade do Estado do Rio de Janeiro/BR
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