Effect of Mild Antibiotic Treatments on <i>D. paulistorum</i> Sex Ratios.

§Sex ratio in the D. paulistorum semispecies Amazonian (AM) and Orinocan (OR) emerging from regular food (untreated) and two independent antibiotic-treatments with Tetracycline (Tet) and Rifampicin (Rif). Total number of flies counted for two weeks from initial day of hatching was 8,693 divided into 4,851 males and 3,842 females. Untreated AM and OR semispecies have the usual 1∶1 sex ratio (also see[42] and references therein). Both antibiotic treatments were performed either over five generations on 0.01% Tet or 0.01% Rif; or over three generations on 0.03% and 0.1% Rif.§ 保罗氏果蝇（D. paulistorum）亚马逊半种群（Amazonian, AM）与奥里诺科半种群（Orinocan, OR）的性比数据，其样本分别取自常规无处理饲料组，以及两种独立的抗生素处理组：四环素（Tetracycline, Tet）处理组与利福平（Rifampicin, Rif）处理组。自孵化首日起连续两周统计的果蝇总个体数为8693只，其中雄性4851只、雌性3842只。未处理的AM与OR半种群呈现典型的1:1性比（另见文献[42]及其引用文献）。两种抗生素处理方案分别为：以0.01%四环素或0.01%利福平连续处理5代；或以0.03%与0.1%利福平连续处理3代。