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Toxicity of Various Insecticides to Xenopsylla Cheopis
Irving Fox
Irving Fox
School of Medicine, School of Tropical Medicine, San Juan,, Puerto Rico
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Gisela A. Rivera
Gisela A. Rivera
School of Medicine, School of Tropical Medicine, San Juan,, Puerto Rico
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Carmen C. Umpierre
Carmen C. Umpierre
School of Medicine, School of Tropical Medicine, San Juan,, Puerto Rico
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Summary
Laboratory strains of Xenopsylla cheopis from La Perla, Puerto Rico, and San Francisco, California, were tolerant to malathion (adult LC50, 0.9–1.9%) and tolerant to fenthion (0.19–0.33%) in tests with World Health Organization test papers. Test papers prepared in our laboratory showed that Abate and Baygon were not significantly effective against adults or larvae. Coumaphos, effective against adults, did poorly against larvae. Naled and carbaryl gave best results against both larvae and adults but because the papers were prepared differently it cannot be claimed that either one is better than fenthion.
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| Past two years | Past Year | Past 30 Days | |
|---|---|---|---|
| Abstract Views | 464 | 225 | 21 |
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| PDF Downloads | 4 | 2 | 0 |