Endosulfan induces changes in spontaneous swimming activity and acetylcholinesterase activity of Jenynsia multidentata (Anablepidae, Cyprinodontiformes)

BALLESTEROS, M.L; DURANDO, P.E.; NORES, M.L; DÍAZ, M.P; BISTONI, M.A; WUNDERLIN, D.A

ENVIRONMENTAL POLLUTION

ELSEVIER SCI LTD

Lugar: Amsterdam; Año: 2009 vol. 157 p. 1573 - 1580

0269-7491

We assessed changes in swimming motility and acethylcholinesterase (AchE) activity of Jenynsia multidentata exposed to Endosulfan (EDS). Females of J. multidentata were exposed to 0.072 and 1.4 µg L-1 EDS. Average speed and movement percentage were recorded during 48 h. We also exposed females to EDS at five concentrations between 0.072 and 1.4 µg L-1 during 24 h, and measured the AchE activity in brain and muscle. At 0.072 µg L-1 EDS swimming motility decreased relative to the control group after 45 h, while at 1.4 µg L-1 EDS swimming motility decreased after 24 h. AchE activity significantly decreased in muscle when J. multidentata were exposed to EDS above 0.072 µg L-1, while no significant changes were observed in brain. Thus, changes in swimming motility and AchE activity in muscle are good biomarkers of exposure to EDS in J. multidentata.