Open AccessHistopathological Alterations in Gills of Neotropical Fish Cheirodon interruptus in an Environment Influenced by a Wood Treatment Plant
Author(s) -
Flores-Lopes Fábio,
Santos Carolyne S.,
de OliveiraRafaela R.
Publication year - 2022
Publication title -
international journal of zoological investigations
Language(s) - English
Resource type - Journals
ISSN - 2454-3055
DOI - 10.33745/ijzi.2022.v08i01.014
Subject(s) - gill , biology , fish <actinopterygii> , veterinary medicine , toxicology , fishery , medicine
The gill epithelium has an important role in maintenance of ionic and osmotic balance of fish a getting as response to physiological and environmental factors. The aim of the present study was to evaluate the pathological alterations in the gills of the fish Cheirodon interruptus collected in the municipality of Triunfo – RS, in two consecutive years (2008 and 2009) from one point located inside the area of a wood treatment plant. The collected fish were fixed in formol 10% and preserved in 70% ethanol. The gills were removed and prepared using routine histological technique. The data demonstrated the occurrence of high frequency of moderate and severe changes in the two years of sampling in fishes. The Histopathological Alterations Index (HAI) demonstrated a small increase in 2009 as compared to 2008. The results suggest that individuals are suffering the action of stressors, but the gills may recover if there is an improvement of environmental conditions.