The use of active metabolism and swimming activity to evaluate the toxicity of dodecyl benzene sodium sulfonate (LAS-C12) on the Mugil platanus (Mullet) according to temperature and salinity.
Active metabolism and swimming activity were used to study the effects of dodecyl benzene sodium sulfonate (LAS-C12) in Mugil platanus, a species traditionally considered as estuarine. The effects of exposure to different concentrations of LAS-C12 (0.0, 1.0, 2.5, and 5.0 mg/L) on the active metabolism and swimming activity of Mugil platanus were evaluated. The active metabolism and swimming activity were estimated through experiments conducted on each of 9 possible combinations of three temperatures (35, 20, and 15 degrees C) and three salinities (35, 20, and 5 per thousand). The results show that the active metabolism increases according to the LAS-C12 concentration in all temperatures and salinities studied. At the highest tested concentration (5.0 mg/L), the active metabolism was 111%; 84.8 and 105% higher than the control, at 35 per thousand salinity at the three temperatures. However, the swimming activity decreased according to the LAS-C12 concentration in all temperatures and salinities studied. At the highest tested concentration, the swimming activity was 78.6, 73.6, and 78.7% less than the control, at 25 degrees C at the three salinities. The active metabolism and swimming activity averages, achieved in the different salinities studied, were not significantly different, as a result of the LAS-C12 concentration.
Barbieri
Edison
E
Instituto de Pesca-APTA-SAA/SP, Caixa Postal 61, Cananéia, São Paulo, Cep 11990-000, Brasil. edisonbarbieri@yahoo.com.br
D000818:Animals; D001557:Benzenesulfonates / Q000633:toxicity*; D009043:Motor Activity / Q000187:drug effects; D010100:Oxygen / Q000378:metabolism; D023701:Smegmamorpha / Q000502:physiology*; D012965:Sodium Chloride / Q000494:pharmacology; D013550:Swimming / Q000502:physiology*; D013696:Temperature; D014874:Water Pollutants, Chemical / Q000633:toxicity*
D001557:Benzenesulfonates; D014874:Water Pollutants, Chemical; D012965:Sodium Chloride; C001114:dodecylbenzenesulfonic acid; D010100:Oxygen