Thermally Induced Genital Appendages on Mosquitoes

Science  20 Sep 1963:
Vol. 141, Issue 3586, pp. 1183-1184
DOI: 10.1126/science.141.3586.1183


Temperatures above those normally present in larval sites of certain mosquitoes (for example, Aedes stimulans) cause larvae of potential males to be feminized in all degrees. Certain combinations of temperatures will affect these larvae so that an abnormal pair of genital appendages consistently appears in addition to the usual pair. These appendages appear to be masculine and are presumed to come from imaginal discs that are latent in present-day Diptera.