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Memórias do Instituto Oswaldo Cruz
Fundação Oswaldo Cruz, Fiocruz
ISSN: 1678-8060
EISSN: 1678-8060
Vol. 92, No. 4, 1997, pp. 559-561
Bioline Code: oc97101
Full paper language: English
Document type: Research Article
Document available free of charge

Memórias do Instituto Oswaldo Cruz, Vol. 92, No. 4, 1997, pp. 559-561

 en Fecundity changes induced by low-doses of gamma radiation on Biomphalaria straminea (Dunker, 1848)
Mauricy A da Motta & Ana MMA Melo

Abstract

A population of 420 snails Biomphalaria straminea, an intermediate host of
Schistosoma mansoni, received gamma-rays obtained from a ^60Co source in
low-doses (0/2,5/5/7,5/10/15/20 and 25 Gy); half population was kept in
colonies (allowing cross fertilization) and the other half was mantained in
sexual isolation (allowing self fertilization). Results showed that 15 Gy
stimulates the fertility of both groups but the colonies were more
sensitive and at this dose its fertility overpasses the control group dose.
The possible hormonal role played in the observed phenomena is under
investigation.

Keywords
fecundity - gamma radiation - Biomphalaria straminea

 
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