NaCl对果蝇生物学特性的影响

以三种不同果蝇品系为材料 ,观察不同浓度 Na Cl(0 m mol/L,10 mm ol/L,5 0 mm ol/L,10 0 mm ol/L,2 0 0 mmol/L)对果蝇生物学特性的影响。结果表明 :低浓度 Na Cl(10 mm ol/L)能加快果蝇幼虫生长发育 ,子代数量相应增加 ,高浓度 Na Cl(10 0 m mol/L,2 0 0 mm ol/L)延滞果蝇发育 ,子代数量减少 ;并且果蝇子代中雌蝇多于雄蝇。Na-Cl能缩短果蝇寿命 ,但低浓度组雄蝇寿命却延长。实验结果表明 ,一定量的 Na Cl能够影响果蝇生长发育、子代数量和成虫寿命 ,干扰群体的雌雄平衡。

Effects of Sodium Chloride on the Bioecology of Drosophila melanogaster

This paper described the effects of NaCl on the bioecology of D.melanogaster under the experimental incubatio n.The results showed that the rate of emergence was quicker and the population o f filial generation was clearly more when D.melanogaster incubated i n 10mmol/L NaCl media.At the concentration of 100 mmol/L and 200 mmol/L the emer gence was dela yed and the filial population was significant smaller than the control.Among the ir filial generation the female population was more than male's.Furthermore,the life period of D.melanogaster was affected by NaCl.The life period of D.melanogaster shorten at higher concentrations,but the male life period prolonged at lower concentration.The experimental results indicate that NaCl affect the emergence speed,sex ratio and the life feriod of Drosophi la.It suggested that the balance of male and female could be changed.