Abstract
Almost all of the peripheral sensilla, including the compound eyes, of both sexes of adult Aedes aegypti have been described at the fine structure level. More is known about the structure of the sensilla of Ae. aegypti than for any other insect. The fine structure of antennal and palpal sensilla of both sexes of Anopheles stephensi has also been thoroughly described. The number of neurons composing the flagellar and antennal nerves of both sexes of Ae. aegypti and An. stephensi has been determined. The internal morphology of the antennal small sensilla coeloconica of both sexes of Toxorhynchites brevipalpis and Deinocerites cancer and tarsal and labellar chemosensilla of female Culiseta inornata has been described from transmission electron microscopic work. Observations have been made on the types, distribution and external morphology of the antennal sensilla of females of 11 genera and males of 5 genera of mosquitoes. Electrophysiological investigations have been conducted on the antennal, palpal, tarsal and labellar sensilla of female Ae. aegypti , as well as on the antennal sensilla of male Ae. aegypti and the tarsal and labellar sensilla of female Cs. inornata . The molecular and chemical nature of rhodopsin, the visual pigment of adult Ae. aegypti , has been investigated as well as aspects of turnover of the rhabdomere membrane. The information summarized above permits the following: (1) correlation of the stimuli that elicit sequential responses in particular behavioral patterns with the sensilla, (2) discussion of probability of and types of homology of sensilla, and (3) consideration of the relationship between numbers of sensilla and various types of behavior. The fine structure of the ocelli of larval Ae. aegypti has been elucidated and considerable attention focused on the effect of light and light deprivation on the ocelli as well as the mechanism of loss in rhabdomere membrane turnover. The fine structure of the antennal sensilla of larval Ae. aegypti and Tx. brevipalpis , the maxillary sensilla of Tx. brevipalpis , and of selected body setae of Ae. aegypti has been described. The approximate number of neurons in the peripheral nervous system of 4th-instar larvae of Tx. brevipalpis has been determined. Of pupal sensilla, only a few body setae of Ae. aegypti have been investigated using transmission electron microscopic techniques.
Published Version
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