西瓜（Citrullus vulgaris Schrad.）叶提取物的生物活性成分对斯氏按蚊和埃及伊蚊的作用。
Effect of bioactive fractions of Citrullus vulgaris Schrad. leaf extract against Anopheles stephensi and Aedes aegypti.
作者信息
Mullai K, Jebanesan A, Pushpanathan T
机构信息
Division of Vector Biology, Department of Zoology, Annamalai University, Annamalainagar 608002 Tamil Nadu, India.
出版信息
Parasitol Res. 2008 Apr;102(5):951-5. doi: 10.1007/s00436-007-0859-2. Epub 2008 Jan 5.
The benzene extract of Citrullus vulgaris was tested against Anopheles stephensi and Aedes aegypti for the larvicidal activity and ovicidal properties. The crude benzene extract was found to be more effective against A. stephensi than A. aegypti. The LC50 values were 18.56 and 42.76 ppm respectively. The LC50 values for silica gel fractions (bioactive fractions I, II, III and IV) were 11.32, 14.12, 14.53 and 16.02 ppm respectively. The mean per cent hatchability of the egg rafts were observed after 48 h post treatment. The crude extract of benzene exerted 100% mortality at 250 ppm against A. stephensi and at 300 ppm against A. aegypti. The silica gel fractions I and II afforded 100% mortality at 100 ppm and III and IV exerted the hatchability rate of 4.9 and 5.3% at the same concentration against A. stephensi.
对甜瓜的苯提取物进行了测试，以检测其对斯氏按蚊和埃及伊蚊的杀幼虫活性及杀卵特性。发现粗苯提取物对斯氏按蚊的效果比对埃及伊蚊更有效。其半数致死浓度（LC50）值分别为18.56 ppm和42.76 ppm。硅胶馏分（生物活性馏分I、II、III和IV）的LC50值分别为11.32 ppm、14.12 ppm、14.53 ppm和16.02 ppm。在处理后48小时观察卵块的平均孵化率百分比。苯的粗提取物在250 ppm时对斯氏按蚊的死亡率为100%，在300 ppm时对埃及伊蚊的死亡率为100%。硅胶馏分I和II在100 ppm时的死亡率为100%，馏分III和IV在相同浓度下对斯氏按蚊的孵化率分别为4.9%和5.3%。
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