A Device for Separation of Pupae from Larvae of Aedes Aegypti (Diptera: Culicidae)

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Abstract
A device has been developed to separate larvae from pupae of Aedes aegypti for mass-rearing operations. The device consists of a tray fitted with a perforated metal screen bottom which fits into a separation chamber. Larvae and pupae are placed in the tray and the chamber is filled with water to a level which touches the bottom of the tray. Trays are kept in the chamber for 10 min. to allow the larvae to pass through the holes. They are then removed from the chamber and placed in chilled 1.5% saline in shallow enamel trays for completion of the separation process. Using these techniques, nearly 0.5 million pupae can be separated within an hour.

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