Which is the fish is used for larva control of malaria-
Gambusia
Amphethis
Globerulis
None
Ans. is 'a' i.e., Gambusia Antilarval MeasuresEnvironmental control(source reduction)Chemical controlBiological control(Larvicidal agents)The most important step in reducing number of mosquitoes is to eliminate their breeding placesMethods include:a) Minor engineering methods# Levelling# Filling# Drainage of breeding placesb) Water management:# Intermittent irrigation# Changing salinity of water (making water unsuitable for mosquito breeding)Employs usage of chemical insecticides that act as larvicidesi) Mineral oilsii) Paris green (copper acetoarsenite)iii) Synthetic insecticides# Fenthion# Chlorpyrfos# AbateEmploys usage of small fish that feed on mosquito larvae# Gambusia affinis# Lebister reticulatus
Environment and Health