Effect of Niclosamide (Bayluscide WP 70 (R)), Anacardium occidentale hexane extract and Euphorbia splendens latex on behavior of Biomphalaria glabrata (Say, 1818), under laboratory conditions

Memórias do Instituto Oswaldo Cruz

Pedro Jurberg²  Otília Sarquis¹  José Augusto A. Dos Santos¹  Regina Da Conceição Reis Ferreira¹ 

[1] ,Universidade Estadual do Rio de Janeiro Instituto de Psicologia Rio de Janiero,Brasil

关键词: Biomphalaria glabrata;    molluscicide;    schistosomiasis;    Bayluscide;    Euphorbia splendens;    Anacardium occidentale;   

DOI  :  10.1590/S0074-02761995000200011

来源: SciELO

【 摘 要 】

The repellent effect of the molluscicides Niclosamide (Bayluscide WP 70 (R)), Anacardium occidentale and the latex of Euphorbia splendens on Biomphalaria glabrata was observed through the investigation of the occurrence of escape behavior among molluscs that were exposed to dosages lower than the LD 50. The total number of individuals out of water among the surviving snails in the control group provided a "Natural Escape Index". The comparison between this total and the total number of surviving snails in each group exposed to the different dosages of the molluscicides after 24 hr provided the "Molluscicide Escape Index" and the detection of a "Repellency Range" to these snails. The escape indexes for Niclosamide, A. occidentale and E. splendens were 10, 6.22 and 6.44 respectively. Repellency occurred at the following concentration ranges: 0.01, 0.02 and 0.03 ppm Bayluscide, 0.1, 0.2 and 0.3 ppm A. occidentale and 0.05, 0.10, 0.15 and 0.20 ppm E. splendens. The Natural Escape Index obtained in the control group was zero.

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