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Toxic Effects of Domoic Acid in the Seabream Sparus aurata
AbstractNeurotoxicity induced in fish by domoic acid (DA) was assessed with respect to occurrence of neurotoxic signs, lethality, and histopathology by light microscopy. Sparus aurata were exposed to a single dose of DA by intraperitoneal (i.p.) injection of 0, 0.45, 0.9, and 9.0 mg DA kg−1 bw. Mortality (66.67 ± 16.67%) was only observed in dose of 9.0 mg kg−1 bw. Signs of neurological toxicity were detected for the doses of 0.9 and 9.0 mg DA kg−1 bw. Furthermore, the mean concentrations (±SD) of DA detected by HPLC-UV in extracts of brain after exposure to 9.0 mg DA kg−1 bw were 0.61 ± 0.01, 0.96 ± 0.00, and 0.36 ± 0.01 mg DA kg−1 tissue at 1, 2, and 4 hours. The lack of major permanent brain damage in S. aurata, and reversibility of neurotoxic signs, suggest that lower susceptibility to DA or neuronal recovery occurs in affected individuals.
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Nogueira, I.; Lobo-da-Cunha, A.; Afonso, A.; Rivera, S.; Azevedo, J.; Monteiro, R.; Cervantes, R.; Gago-Martinez, A.; Vasconcelos, V. Toxic Effects of Domoic Acid in the Seabream Sparus aurata. Mar. Drugs 2010, 8, 2721-2732.View more citation formats
Nogueira I, Lobo-da-Cunha A, Afonso A, Rivera S, Azevedo J, Monteiro R, Cervantes R, Gago-Martinez A, Vasconcelos V. Toxic Effects of Domoic Acid in the Seabream Sparus aurata. Marine Drugs. 2010; 8(10):2721-2732.Chicago/Turabian Style
Nogueira, Isabel; Lobo-da-Cunha, Alexandre; Afonso, António; Rivera, Socorro; Azevedo, Joana; Monteiro, Rogério; Cervantes, Rosa; Gago-Martinez, Ana; Vasconcelos, Vítor. 2010. "Toxic Effects of Domoic Acid in the Seabream Sparus aurata." Mar. Drugs 8, no. 10: 2721-2732.
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