甲胺磷和乙酰甲胺磷对萼花臂尾轮虫实验种群动态的影响(英文)  

EFFECTS OF METHAMIDOPHOS AND ACEPHATE ON EXPERIMENTAL POPULATION DYNAMICS OF ROTIFER BRACHIONUS CALYCIFLORUS

作　　者：柯丽霞[1] 席贻龙[1] 查春旺[1] 储昭霞[1] 

机构地区：[1]安徽师范大学生命科学学院,安徽省高校生物环境和生态安全省级重点实验室,安徽重要生物资源的保护和利用省级重点实验室,芜湖241000

出　　处：《水生生物学报》2009年第2期189-194,共6页Acta Hydrobiologica Sinica

基　　金：Natural Scientific Foundation of China(30470323);Natural Scientific Foundation of Educational Department of China(051286);Excellent Youth Foundation in Anhui Province(04043050)

摘　　要：应用3天种群增长实验方法,在(25±1)℃、无光照、以3.0×106cells/mL的斜生栅藻为轮虫的食物等条件下,研究了亚致死浓度(0.01、0.1、1.0、10.0、100.0、1000.0和10000.0μg/L)的甲胺磷和乙酰甲胺磷对萼花臂尾轮虫实验种群动态的影响。结果显示,甲胺磷和乙酰甲胺磷显著地影响萼花臂尾轮虫的种群增长率、混交雌体数与非混交雌体数的比值和混交率。甲胺磷显著地影响萼花臂尾轮虫种群中的带卵雌体数与不带卵雌体数的比值,但乙酰甲胺磷对其无显著的影响。和对照组相比,浓度为100.0μg/L的甲胺磷和浓度为1.0—10,000.0μg/L的乙酰甲胺磷均使轮虫种群增长率显著增大,而浓度为1000.0μg/L和10000.0μg/L的甲胺磷却使之显著减小;1000.0μg/L的甲胺磷使轮虫种群中的带卵雌体数与不带卵雌体数的比值显著上升,0.1μg/L的甲胺磷和10.0—10000.0μg/L的乙酰甲胺磷均使轮虫种群中的混交雌体数与非混交雌体数的比值显著上升,0.1μg/L的甲胺磷和10μg/L的乙酰甲胺磷均使轮虫的混交率显著增大,10.0—10000.0μg/L的乙酰甲胺磷使轮虫休眠卵产量显著提高。上述结果表明,亚致死浓度的甲胺磷和乙酰甲胺磷对萼花臂尾轮虫实验种群动态具有显著的影响。Effects of sublethal levels （0. 01,0. 1,1.0,10. 0,100. 0,1000. 0 and 10000. 0 μg/L） of organophosphoras insecticides including methamidophos （ O, S-Dimethyl phosphoramidothioate, CAS No. 10265-92-6） and acephate （ O, S-Dimeth- yl acetylphosphoramidothioate, CAS No. 30560-19-1 ） on population dynamics of rotifer Brachionus calyciflorus were studied by 3-day population growth test at 25 ± 1 ℃ , in dark, and with 3.0 ×10^6cells/mL of S. obliquus as the rotifers＇ food. The resuits showed that both methamidophos and acephate influenced significantly the population growth rate,the ratio mictic females/amictic females and the mictic rate of the rotifers. Methamidophos influenced markedly the carrying-egg females/noncarrying-egg females of the rotifers,but acephate did not. Compared to the controls, 100.0μg/L methamidophos and 1.0-- 10000.0 μg/L acephate increased significantly the population growth rate, but the reverse was true for 1,000. 0 and 10,000. 0 μg/L methamidophos. 1,000.0 μg/L methamidophos increased significantly the ratio carrying-egg females/noncarrying-egg females. 0. 1 μg/L methamidophos and 10. 0--10000.0 μg/L acephate increased significantly the ratio mictic females/amictic females, and both 0. 1 μg/L methamidophos and 10 μg/L acephate increased significantly the mictic rate. 10. 0--10000. 0 μg/L acephate significantly increased the resting egg production. The abovetated results indicated that sublethal levels of methamidophos and acephate influenced significantly the population dynamics of B. calyciflorus.

关 键 词：有机磷杀虫剂 甲胺磷 乙酰甲胺磷 萼花臂尾轮虫 种群动态 

分 类 号：Q178.1[生物学—水生生物学]