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Memórias do Instituto Oswaldo Cruz
Fundação Oswaldo Cruz, Fiocruz
ISSN: 1678-8060
EISSN: 1678-8060
Vol. 90, No. 2, 1995, pp. 191-194
Bioline Code: oc95039
Full paper language: English
Document type: Research Article
Document available free of charge

Memórias do Instituto Oswaldo Cruz, Vol. 90, No. 2, 1995, pp. 191-194

 en Effect of Niclosamide (Bayluscide WP 70 R), Anacardium occidentale check for this species in other resources Hexane Extract and Euphorbia splendens check for this species in other resources Latex on Behavior of Biomphalaria glabrata check for this species in other resources (Say, 1818), under Laboratory Conditions
Pedro Jurberg; Otilia Sarquis; Jose Augusto A Dos Santos & Regina Da Conceic o Reis Ferreira

Abstract

The repellent effect of the molluscicides Niclosamide
(Bayluscide WP 70 ),  Anacardium  occidentale
  check for this species in other resources
 and the latex of
 Euphorbia  splendens
  check for this species in other resources
 on  Biomphalaria  glabrata
  check for this species in other resources
 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.

Keywords
Biomphalaria glabrata - molluscicide - schistosomiasis - Bayluscide - Euphorbia splendens - Anacardium occidentale

 
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