Coordenação de Recursos Pesqueiros e Agronegócio, Instituto Federal de Educação, Ciência e Tecnologia do Pará, Belém, PA, Brazil.
Genet Mol Biol. 2011 Oct;34(4):694-7. doi: 10.1590/S1415-47572011000400024. Epub 2011 Oct 1.
The frequencies of micronuclei (MN) and morphological nuclear abnormalities (NA) in erythrocytes in the peripheral blood of tambaqui (Colossoma macropomum), treated with 2 mg.L(-1) methylmercury (MeHg), were analyzed. Two groups (nine specimens in each) were exposed to MeHg for different periods (group A - 24 h; group B - 120 h). A third group served as negative control (group C, untreated; n = 9). Although, when compared to the control group there were no significant differences in MN frequency in the treated groups, for NA, the differences between the frequencies of group B (treated for 120 h) and the control group were extremely significant (p < 0.02), thus demonstrating the potentially adverse effects of MeHg on C. macropomum erythrocytes after prolonged exposure.
分析了用 2 毫克/升甲基汞（MeHg）处理过的淡水白鲳（Colossoma macropomum）外周血红细胞中的微核（MN）和形态核异常（NA）的频率。两组（每组 9 个标本）暴露于 MeHg 的时间不同（A 组-24 小时；B 组-120 小时）。第三组作为阴性对照（未处理的 C 组，n=9）。虽然与对照组相比，处理组的 MN 频率没有显著差异，但对于 NA，B 组（处理 120 小时）与对照组之间的差异极其显著（p<0.02），表明 MeHg 对淡水白鲳红细胞的潜在不利影响。经过长时间暴露。
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