Premium
Effects of iodized salt on the histopathology of the gills and liver in Rhamdia quelen and Metynnis maculatus
Author(s) -
Oliveira Zeni Thayzi,
Vicente André Luiz,
CastilhoWestphal Gisela Geraldine,
Horodesky Aline,
Montanhini Neto Roberto,
Ostrensky Antonio
Publication year - 2017
Publication title -
aquaculture research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.646
H-Index - 89
eISSN - 1365-2109
pISSN - 1355-557X
DOI - 10.1111/are.13056
Subject(s) - biology , gill , toxicity , toxicology , fish <actinopterygii> , aquatic animal , fishery , zoology , medicine
Table salt has been used as a reference substance in toxicological studies on fish and as an antiparasitic agent in aquaculture. The objectives of this work were to evaluate the sensitivity of Rhamdia quelen and Metynnis maculatus to iodized salt and to assess the possible changes in the gills and liver resulting from subchronic exposure of fish to this compound. The iodized salt toxicity levels after 96 h of exposure were 11.4 and 10.8 g L −1 for R . quelen and M . maculatus . None of the observed changes in the livers of the studied fish could be unequivocally correlated with salt exposure. In turn, it could not be entirely ruled out that the changes found in the gills, including epithelial lifting, oedema formation and vascular congestion, were caused by exposure of fish to salt.