title: [Change in sex ratio of a Drosophila population in relation to population size].
abstract: Changes in sex ratio with population size fluctuations were studied in natural and cage populations of Drosophila. It was shown that the proportion of females decreased with an increase in population size both in natural and laboratory populations. If laboratory populations were maintained on a poor diet, this effect was absent. The amplitude of number fluctuation was shown to be higher in males than in females. The possible role of density-dependent selection on sex in the control of population size dynamics is discussed.
authors.forename: G V
authors.initials: GV
authors.lastname: Grechanyĭ
authors.forename: M V
authors.initials: MV
authors.lastname: Pogodaeva
mesh_terms: D000818:Animals; D016009:Chi-Square Distribution; D004032:Diet; D004331:Drosophila melanogaster / Q000235:genetics*; D005260:Female; D016015:Logistic Models; D008297:Male; D011156:Population Density; D012621:Seasons; D012641:Selection, Genetic; D012744:Sex Ratio
vernacular_title: Izmenenie polovogo sostava populiatsii drozofily pri dinamike cheslennosti.