temephos การใช้

• As with other organophosphates, temephos affects the central nervous system through inhibition of cholinesterase.
• Resistance to temephos by " A . aegypti " has been seen in Brazil.
• In 1999, mosquitoes from the city of Rio de Janeiro were already resistant to temephos.
• Therefore, temephos should be limited only to sites where less hazardous larvicides are ineffective and with intervals between applications.
• Temephos, marketed as Abate and ProVect, is an organophosphate which prevents mosquito larvae from developing resistance to bacterial larvicides.
• The Brazilian Aedes aegypti resistance monitoring program detected temephos resistance in " A . aegypti " populations from several localities in the country in 1999 ( Funasa 2000, Lima et al . 2003 ).
• Due to the small amount needed and the fast rate that temephos breaks down in water, this type of larvicide does not pose an unreasonable health risk to humans, but at large doses it can cause nausea or dizziness.