We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Organic contamination and multi-biomarker assessment in watersheds of the southern Brazil: an integrated approach using fish from the Astyanax genus.
- Authors
Zebral, Yuri Dornelles; Righi, Bruna Duarte Pereira; Anni, Iuri Salim Abou; Escarrone, Ana Laura Venquiaruti; Guillante, Tainá; Vieira, Carlos Eduardo Delfino; Costa, Patrícia Gomes; Bianchini, Adalto
- Abstract
We aimed to examine the responses of pollution biomarkers in feral fish from Astyanax genus collected at three hydrographic regions in southern Brazil and the capacity of these tools to differentiate between various levels of contamination. To achieve this, levels of organochlorine pesticides (liver), as well as the biomarkers AChE (muscle and brain), TBARS (liver), and EROD (liver) were assessed. Collections were conducted in four municipalities (Alegrete, Caraá, Lavras, and Santa Vitória) during 1 year, encompassing winter and summer. Fish from Alegrete were the most contaminated overall, but animals sampled in Caraá, and Lavras also displayed elevated levels of current-use pesticides. Elevated levels of endosulfans, DDTs, HCHs, and current-use pesticides were accompanied by elevated levels of TBARS in the liver. Conversely, fish from Santa Vitória exhibited the highest levels of PAHs, accompanied by elevated levels of EROD in the liver and reduced levels of AChE in muscle and brain. TBARS proved to be a reliable biomarker for assessing impacts arising from pesticide accumulation, while EROD and AChE served as valuable indicators of impacts resulting from PAHs accumulation. Ultimately, the results obtained in this study demonstrate the reliable use of the proposed biomarkers for tracking biological impacts stemming from aquatic pollution using feral Astyanax as biomonitoring species.
- Subjects
BRAZIL; ASTYANAX; WATER pollution; WATERSHEDS; WATERSHED management; BIOLOGICAL monitoring; PESTICIDES; ORGANOCHLORINE pesticides; ENDOSULFAN
- Publication
Environmental Science & Pollution Research, 2024, Vol 31, Issue 21, p30543
- ISSN
0944-1344
- Publication type
Article
- DOI
10.1007/s11356-024-33181-5