| 孙帆,葛乐乐,白琰,江姗,席贻龙.2021.亚致死浓度的盐酸四环素对萼花臂尾轮虫 存活、生殖和种群增长的影响.动物学杂志,56(3):377-383. |
| 亚致死浓度的盐酸四环素对萼花臂尾轮虫 存活、生殖和种群增长的影响 |
| Effects of Sublethal Concentration of Tetracycline Hydrochloride on Survival, Reproduction and Population Growth of Brachionus calyciflorus |
| 投稿时间：2020-10-10 修订日期：2021-05-07 |
| DOI：10.13859/j.cjz.202103007 |
| 中文关键词: 盐酸四环素 萼花臂尾轮虫 生活史特征 慢性毒性 |
| 英文关键词:Tetracycline hydrochloride Brachionus calyciflorus Life history characteristics Chronic toxicity |
| 基金项目:国家自然科学基金项目（No. 31971562），安徽省高校生物环境与生态安全省级重点实验室专项基金项目（No. 2004sys003） |
|
| 摘要点击次数: 536 |
| 全文下载次数: 886 |
| 中文摘要: |
| 盐酸四环素是一种广谱抗生素，但其对轮虫存活、生殖和种群增长等的影响尚未知。本文应用生命表实验方法研究了不同浓度[0（对照组）、2.5、5、10、20、40和80 mg/L]的盐酸四环素对萼花臂尾轮虫（Brachionus calyciflorus）存活、生殖和种群增长的影响。单因素方差分析表明，盐酸四环素浓度对轮虫的生命期望、世代时间、净生殖率和种群内禀增长率均具有显著性影响（P < 0.05），但对后代混交率无显著性影响（P > 0.05）。多重比较（最小显著差数法）显示，与对照组相比，2.5 ~ 40 mg/L盐酸四环素处理组中轮虫的生命期望和世代时间分别显著延长了35% ~ 52%和13% ~ 24%（P < 0.01），净生殖率显著提高了17% ~ 37%（P < 0.05）；80 mg/L盐酸四环素处理组中轮虫的净生殖率和内禀增长率分别显著降低了20.35%和8.69%（P < 0.05）。回归分析表明，盐酸四环素浓度与轮虫的生命期望、世代时间、净生殖率和内禀增长率之间均具有显著的剂量-效应关系。在监测较低浓度的盐酸四环素生态效应时，生命期望、世代时间和净生殖率具有相同的敏感性；而在监测较高浓度的盐酸四环素生态效应时，净生殖率和内禀增长率具有相同的敏感性。 |
| 英文摘要: |
| Tetracycline hydrochloride (TCH) is a broad-spectrum antibiotic. This study investigated the effects of TCH at concentrations of 0 (control), 2.5, 5, 10, 20, 40 and 80 mg/L on the survival, reproduction and population growth of Brachionus calyciflorus by means of life-table experiment. One-way ANOVA showed that TCH concentration had significant effects on life expectancy at hatching, generation time, net reproductive rate and intrinsic rate of population increase of the rotifers (P < 0.05), but did not have a marked effect on proportion of sexual offspring (P > 0.05). Multiple comparison of the least significant difference (LSD) showed that compared to the control, treatments with TCH at 2.5﹣40 mg/L prolonged significantly life expectancy at hatching and generation time by 35%﹣52% and 13%﹣24%, respectively (P < 0.01), and increased net reproductive rate by 17%﹣37% (P < 0.05), while that at 80 mg/L decreased net reproductive rate and intrinsic rate of population increase of the rotifers by 20.35% and 8.69%, respectively (P < 0.05) (Table 1). Regression analysis showed that there were significant dose-effect relationships between TCH concentration (x, mg/L) and life expectancy at hatching (y1), generation time (y2), net reproductive rate (y3) as well as intrinsic rate of population increase of the rotifers (y4), and the relationships could be described as y1 =﹣0.029x2 + 1.843x + 144.669, y2 =﹣0.007x2 + 0.476x + 73.521, y3 =﹣0.003x2 + 0.138x + 19.936 and y4 =﹣1.594 × 10–5x2 + 7.37 × 10–7x + 1.197, respectively (Table 2). When monitoring the ecological effects of lower TCH concentrations, the life expectancy at hatching, the generation time and the net reproductive rate had the same sensitivity, but when monitoring those of higher TCH concentrations, both the net reproduction rate and the intrinsic rate of population increase had the same sensitivity. |
| 附件 |
| 查看全文 查看/发表评论 下载PDF阅读器 |
|
|
|
