Enzymatic response of Macrobrachium jelskii (Miers, 1877) exposed to water from urban and rural rivers in Bahia, Brazil

Several biomarker enzymes such as catalase (CAT) and glutathione S-transferase (GST) can be used to measure oxidative stress in animals caused by exposure xenobiotics. The objective of the present study was characterize different points Capivari (CP1 CP2), Paraguaçu (PG1 PG2) Subaé (SB1 SB2) Rivers, state Bahia, relation presence xenobiotics, using CAT GST bioindicators M. jelskii. water-sampling sites were considered urban or rural all them signs environmental degradation observed. Therefore, acute tests (96h) performed with water samples collected during dry rainy seasons. Results showed that activity prawns exposed from CP1 CP2 very similar, while those PG1, PG2, SB1 SB2 formed distinct groups data. Significant increase at least one analyzed each sampling site observed, when compared control group. This demonstrated a possible jelskii xenobiotics (e.g., domestic sewage, pesticides, oil, heavy metals). Enzymatic activities higher experiments carried out season, except for River. potential bioindicator contributed knowledge aspects antioxidant defense system this species.