The residual effect of S 29493 (Baytex) in Trinidad (abstract only)
West Indian med. j
; 10(2): 136, June 1961.
Article
em En
| MedCarib
| ID: med-7587
Biblioteca responsável:
JM3.1
Localização: JM3.1; R18.W4
ABSTRACT
In January 1959 the malaria control programme in Trinidad was changed to a malaria eradication programme. This is scheduled to end in December 1961 and there is every indication that malaria eradication will be accomplished on schedule. DDT has been used since 1945 and while A. aquasalis, the malaria vector of the coastal regions has shown no signs of resistance, several house hold pests, particularly culex fatigans, have developed resistance to DDT and dieldrin, malathion, gammexane and sevin. In order to keep the goodwill of the housewife and thereby enable the residual spraying programme to run smoothly it was decided to investigate the effect of Baytex. In a control area, 1,247 houses were sprayed, of which 1,234 received a deposit of 0.66 gms per square metre and 113 received 1.0 gms per square metre. The results of spraying on C. fatigans and A. aquasalis were evaluated directly by wall testing and indirectly by assessing the fumigant action of Baytex. The effects on other household pests were determined by house visits and absolute mortality on these pests was obtained immediately. Wall test showed diminishing mortality of C. fatigans and A. aquasalis with the passage of time. The fumigant action of Baytex appears to be more lethal in that it has continuous effect over 24 hours in the day compared with the brief effects of actual contact from one hourly direct wall testing technique (AU)
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Coleções:
01-internacional
Base de dados:
MedCarib
Assunto principal:
Resistência a Inseticidas
/
Insetos Vetores
/
Malária
País/Região como assunto:
Caribe ingles
/
Trinidad y tobago
Idioma:
En
Revista:
West Indian med. j
Ano de publicação:
1961
Tipo de documento:
Article
/
Congress and conference