双酚A对光滑双脐螺生存和代谢活动的影响  

Effects of Bisphenol A on the Survival and Metabolic Activities of Biomphalaria glabrata

作　　者：胡楠楠 殷旭仁[1] 曲国立[1] 乔树苗 戴洋[1] HU Nannan;YIN Xuren;QU Guoli;QIAO Shumiao;DAI Yang(Jiangsu Institute of Parasitic Diseases,Wuxi 214000,China)

机构地区：[1]江苏省血吸虫病防治研究所,江苏无锡214000

出　　处：《湖南生态科学学报》2024年第3期65-70,共6页Journal of Hunan Ecological Science

基　　金：江苏省科教能力提升工程(ZDXYS202207)。

摘　　要：【目的】本研究旨在探究光滑双脐螺在双酚A污染水体中的生存状态,以探究在类似污染条件下该物种的定殖潜力。【方法】采用“静水式呼吸室”法,分别测定了0、0.05、0.10、0.20和0.40 mg/L五个浓度双酚A条件下,不同个体大小光滑双脐螺的死亡率、耗氧率和排氨率。此外,还深入分析了光滑双脐螺在双酚A暴露下的软体干质量与耗氧率和排氨率的关系。【结果】光滑双脐螺的软体干质量与耗氧率和排氨率呈负相关。软体干质量小的螺,其耗氧率和排氨率大于软体干质量大的螺。对照组中,小螺(壳宽<8 mm)的耗氧率为1.368、排氨率为83.372,大螺(壳宽≥8 mm)的耗氧率为0.743、排氨率为33.701,随着双酚A浓度升高,不同个体大小光滑双脐螺的耗氧率和排氨率均呈下降趋势,且小螺的下降幅度更大(P<0.05)。双酚A的浓度越高,光滑双脐螺的死亡率越高。双酚A浓度为0.40 mg/L时,小螺的死亡率达到31.3%,大螺的死亡率达到25.6%,且小螺和大螺的死亡率差异显著(P<0.05)。【结论】本研究表明,含有双酚A的水体能显著抑制光滑双脐螺的生存和代谢活动,且这种抑制效果与个体大小密切相关。随着污染物浓度升高,小螺的生理机能受到更为严重的抑制,导致更高的死亡率。这些结果对于评估污染环境中光滑双脐螺的入侵潜力和制定相关管理策略制定具有重要的指导意义。【Objective】This study aims to investigate the survival status of Biomphalaria glabrata in water polluted with bisphenol A(BPA)to explore the colonization potential of this species under similar pollution conditions.【Method】Using the“static water respirometer”method,the mortality,oxygen consumption rate,and ammonia excretion rate of Biomphalaria glabrata of different sizes were measured under five concentrations of BPA(0,0.05,0.10,0.20,and 0.40 mg/L).In addition,the relationship between the dry weight of the soft body and the oxygen consumption rate(OCR)and ammonia excretion rate(AER)of Biomphalaria glabrata under BPA exposure was analyzed in depth.【Results】The dry weight of the soft body of Biomphalaria glabrata showed an opposite trend with its oxygen consumption rate and ammonia excretion rate.Snails with smaller dry weights of the soft body had higher OCR and AER than those with larger dry weights of the soft body.In the control group,the OCR and AER of small snails(snail width<8 mm)were 1.368 and 83.372,respectively.While those of large snails(snail width≥8 mm)were 0.743 and 33.701,respectively.As the concentration of BPA increased,the OCR and AER of Biomphalaria glabrata of different sizes both showed a decreasing trend,and the decrease was more significant for small snails(P<0.05).The higher the concentration of BPA,the higher the mortality of Biomphalaria glabrata.When the concentration of BPA was 0.40 mg/L,the mortality of small snails reached 31.3%,and the mortality of large snails reached 25.6%,with a significant difference in mortality between small and large snails(P<0.05).【Conclusion】This study shows that water containing BPA can significantly inhibit the survival and metabolic activities of Biomphalaria glabrata,and this inhibitory effect is closely related to the size of the individuals.As the concentration of pollutants increases,the physiological functions of small snails are more severely inhibited,resulting in a higher mortality rate.These results have important guiding si

关 键 词：光滑双脐螺 双酚A 死亡率 耗氧率 排氨率 

分 类 号：Q958.13[生物学—动物学] X171.5[环境科学与工程—环境科学]