Abstract
Newly emerged females of 11 species of Florida mosquitoes were flown in sound-recording boxes at 27°C under LD 12:12 to investigate the effects of temporary crowding during larval stages on the spontaneous flight activity patterns. None of the species investigated exhibited the migratory type flight activity pattern which could be attributable to temporary crowding rearing conditions. Only 4 species, Psorophora confinnis, Culex nigripalpus, Culex Pipiens quinquifasciatus, and Anopheles quadrimaculatus distinctly showed increased flight activity during the first 3 days after emergence when reared under temporary crowding rearing conditions. Seven other species showed at most a very slight increase in flight activity which could be attributed to temporary crowding rearing conditions. The duration of teneral period appears to be species specific and affected by the larval rearing conditions. Most of the species investigated did not show entrainment to light and dark cycles before 48 hr after emergence.
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