Baseline micronuclei and nuclear abnormalities frequencies in native fishes from the Paraná River (Argentina)

Brazilian Journal of Biology

Gna Furnus¹  Jd Caffetti¹  Em García¹  Mf Benítez¹  Mc Pastori¹  As Fenocchio¹ 

关键词: biomonitoring;    micronuclei;    nuclear abnormalities;    fishes;    Paraná River;    biomonitoramento;    micronúcleos;    anormalidades nucleares;    peixes;    Rio Paraná;   

DOI  :  10.1590/1519-6984.13712

来源: SciELO

【 摘 要 】

This work aims to establish baseline frequencies of micronuclei (MN) and nuclear abnormalities (NA) in native fish species collected in situ from the Paraná River. For this purpose, the micronucleus test was applied in peripheral blood erythrocytes from specimens obtained from samplings collected at two localities (Posadas and Candelaria, Misiones, Argentina) during the period 2007-2010. The results were statistically analyzed using the Kruskal Wallis test. Data from nine fish species were obtained, among which Steindachnerina brevipinna(Characiformes) revealed the highest baseline frequency of MN and NA, showing statistically significant differences with regard to the other analyzed species. These results are the first report of baseline MN and NA frequencies for native fish species studied and could be useful for future comparisons with data of fishes belonging to other environments.

【 授权许可】

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