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Directions: Read each question and select the correct answer from the drop down list. When you are finished answering all of the questions click the submit button at the bottom of the page. Incorrect responses will be indicated with in the boxes below the choices. 1. What size bottle is recommended for use in the bottle bioassay? 2. What inert liquid chemical is recommended in the bottle bioassay to help coat the inside of the bottle with the insecticide? 3.When timing the mortality of the mosquitoes in the bottle, the number dead should be counted at _____ minute(s) intervials. 4. How many bottles should be used to test a single insecticide sample? 5. How many pipets should be used for a run of two insecticides? 6. You must use the same number of mosquitoes for each bottle used. 7. The larvae that are tested for resistance should come only from the field. 8. The technical-grade insecticide should be diluted into ____________ before mixing it in the beaker. 9. The small volume of water used to transfer the mosquito larvae to the beaker must be corrected for in the assay. 10. Before adding the larvae to the beaker mixed with water and insecticide, what should you do? 11. Which insecticides typically to take longer to kill the larvae? 12. CDC suggests that mosquitoes be killed for the homogenization process by freezing. What is the recommended minimum time that the they should be kept in the freezer? 13. When receiving reports that mosquitoes are biting during daylight hours, which genus should you be on the lookout for? 14. If you have found a collection of polluted water with larvae swimming by bending their bodies, which genus are the larvae likely to be? 15. Which mosquito genus lays it eggs in rafts? 16. When blood-feeding, which mosquito holds its body perpendicular to the surface of the skin? 17. What mosquito genus serves as a vector for malaria? |
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| NCID Home | | CDC Home | Search | Health Topics A-Z | This page last reviewed May 7, 2002 Centers
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