Abstract
MaleDrosophila melanogaster differ in the age at which they reach sexual maturity following eclosion from the pupa. Courtship latency, which is the time taken by a male to initiate courtship of a conspecific female, is related to age. Young males take significantly longer than older males to begin courtship. The probability that a male will initiate courtship is influenced by the physiological state of the female. Males of different genotypes readily court mature (3-day-old) virgin females, but they differ significantly in their reaction to immature (12-hr-old) and fertilized females. Genes located on the third chromosome largely control male courtship latency, but responses to immature and fertilized females have different genetic bases, suggesting that the relevant stimulus inputs governing these responses also differ. The adaptive significance of courtship directed toward immature or fertilized females, which rarely mate, probably depends on the average level of sexual responsiveness of potentially receptive mature virgin females in a given population.
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This work was supported by a grant from the Science Research Council of Great Britain.
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Eastwood, L., Burnet, B. Courtship latency in maleDrosophila melanogaster . Behav Genet 7, 359–372 (1977). https://doi.org/10.1007/BF01077449
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DOI: https://doi.org/10.1007/BF01077449