THE EFFECT OF PHOTOPERIODISM ON RESTING, TREEHOLE, MOSQUITO LARVAE

Abstract

During the past few years several workers in culicid biology have made studies of the rest period that accompanies the hibernation of certain temperate and subtropical treehole mosquitoes. Incidental to these studies several attempts have been made to bring on prematurely the phase of active development by artificial agents. Roubaud (2, p. 1126) has shown that young, first stage, Aedes geniculatus larvae can be Induced to hatch from the egg and to begin active development by means of certain enzymatic ferments. As far as the writer knows, no one has yet reported any successful attempts to activate resting larvae in the more advanced stages.