EFICIíÅ NCIA DE ANESTÉSICOS EM FíÅ MEAS DO GASTRÓPODE Littoraria angulifera
DOI:
https://doi.org/10.20950/1678-2305.2018.304Palavras-chave:
eugenol, cloreto de magnésio, mentol, moluscos, sedaçãoResumo
O presente estudo avaliou o efeito de três anestésicos em três concentrações, o mentol (C10H20O) (1%; 1,5%; 2%), o eugenol (C10H12O2) (0,5%; 1%; 1,5%) e o cloreto de magnésio (MgCl2) (4%;7%;10%), diluídos em água destilada, sobre fêmeas do gastrópode Littoraria angulifera. Para cada concentração foram utilizadas 20 fêmeas (total = 180), com altura da concha entre 18,3 e 26,1 mm, coletadas no mesmo local. Foram observados os tempos de indução e de recuperação do efeito sedativo, assim como a sobrevivência. Os animais foram mantidos em aquários a uma temperatura laboratorial de 25±1°C e as observações foram feitas a cada 30 minutos após a anestesia, durante 2 horas. Após o término do experimento, os animais foram mantidos nos aquários e observados por 15 dias quanto í sobrevivência. Apenas o MgCl2 causou efeito sedativo sobre L. angulifera, sendo que a 4% e a 7% observou-se sedação de 20% e de 95% dos animais, respectivamente, após 2 horas de anestesia, enquanto que a 10%, todos os animais foram anestesiados em 1 hora. Em conclusão, L. angulifera pode ser anestesiada de forma eficiente em uma solução de 10% de MgCl2 durante 1 h e a sua recuperação ocorre ao fim de 30 minutos sem nenhum efeito colateral evidente no comportamento e na sobrevivência.
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