Endosulfan induces changes in spontaneous swimming activity and acetylcholinesterase activity of Jenynsia multidentata (Anablepidae, Cyprinodontiformes) |
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Authors: | ML Ballesteros ML Nores MA Bistoni DA Wunderlin |
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Institution: | a Facultad de Ciencias Exactas, Físicas y Naturales, Cátedra Diversidad Animal II, Universidad Nacional de Córdoba, Av. Vélez Sársfield 299, 5000 Córdoba, Argentina b Facultad de Ciencias Exactas, Físicas y Naturales, Departamento de Biología, Cátedra de Fisiología Animal, Universidad Nacional de San Juan, Complejo “Islas Malvinas”, Av. José I. de la Roza y Meglioli, Rivadavia, San Juan, Argentina c Facultad de Ciencias Médicas, Universidad Nacional de Córdoba—CONICET, Ciudad Universitaria, Córdoba, Argentina d Facultad de Ciencias Médicas, Cátedra de Estadística y Bioestadística, Escuela de Nutrición, Universidad Nacional de Córdoba, Pabellón Chile, Ciudad Universitaria, 5000 Córdoba, Argentina e Facultad de Ciencias Químicas, Dto. Bioquímica Clínica—CIBICI, Universidad Nacional de Córdoba—CONICET, Haya de la Torre esq. Medina Allende, Ciudad Universitaria, 5000 Córdoba, Argentina |
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Abstract: | We assessed changes in spontaneous swimming activity and acetylcholinesterase (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 activity and AchE activity in muscle are good biomarkers of exposure to EDS in J. multidentata. |
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Keywords: | Fish behavior Acetylcholinesterase activity Endosulfan Brain Muscle |
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