Mosquitoes: Female Monogamy Induced by Male Accessory Gland Substance

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Abstract
Male accessory glands were implanted in virgin females of Aedes aegypti . When exposed to males, females copulated readily but were not inseminated; they remained sterile for life. Extract from one male could sterilize more than 64 females. The active principle may be a protein or peptide. Intraspecific transplant prevented insemination in 12 species, including Aedes , Anopheles , and Culex ; interspecific transplant gave partial protection.