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The influence of Caffeine and Thymol on the survival, growth and reproduction of Subulina octona (Bruguiére 1789) (Mollusca, Subulinidae)

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The influence of Caffeine and Thymol on the survival, growth and reproduction of Subulina octona (Bruguiére 1789) (Mollusca, Subulinidae)

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Título The influence of Caffeine and Thymol on the survival, growth and reproduction of Subulina octona (Bruguiére 1789) (Mollusca, Subulinidae)
Autor Ferreira, Paula
Soares, Geraldo Luiz Gonçalves
D'ávila, Sthefane
Bessa, Elisabeth Cristina de Almeida
Abstract Subulina octona is a terrestrial snail which serves as an intermediate host for the parasites. It is also an agricultural pest. The aim of this work was to assess, during 120 days, the effects of caffeine and thymol at 2.5 g/L and 5 g/L on the hatchability, survival after hatching, growth and reproduction of S. octona under the laboratory conditions. A total of 240 eggs, 240 juveniles aged 10-day-old, and 240 aged 30-day-old were tested. The results showed that thymol (at 2.5 g/L and 5 g/L) and caffeine (at 5 g/L) acted as ovicides. In the 10-day-old juveniles, caffeine at 5 g/L caused 25% mortality and at 2.5 g/L it caused 30% mortality. Thymol at 2.5 and 5 g/L caused 20 and 22.5% mortality, respectively. In the 30-day-old juveniles, caffeine at 5 g/L caused 47.5% mortality.
Contido em Brazilian Archives of biology and tecnology. Vol. 52, n. 4 (jul./ago. 2009), p. 945-952
Assunto Moluscos
[en] Caffeine
[en] Molluscicide
[en] Snail-terrestrial
[en] Subulina octona
[en] Thymol
Origem Nacional
Tipo Artigo de periódico
URI http://hdl.handle.net/10183/107605
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