The influence of caffeine and thymol on the survival, growth and reproduction of Subulina octona (Brugüière, 1789) (Mollusca, Subulinidae)

Brazilian Archives of Biology and Technology

Paula Ferreira²  Geraldo Luiz Gonçalves Soares¹  Sthefane D'ávila²  Elisabeth Cristina De Almeida Bessa² 

[1],Universidade Federal de Juiz de Fora Instituto de Ciências Biológicas Departamento de ZoologiaJuiz de Fora MG ,Brasil

关键词: Caffeine;    Thymol;    molluscicide;    Subulina octona;    snail-terrestrial;   

DOI  :  10.1590/S1516-89132009000400018

来源: SciELO

【 摘 要 】

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.

【 授权许可】

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