摘要
麦长管蚜和禾谷缢管蚜蜜露的主要糖分为果糖、葡萄糖、蔗糖及两种未知糖分.其中前者以蔗糖含量最高,后者则不含蔗糖.其游离氨基酸种类基本相同,但后者蜜露中未鉴定出苏氨酸;除丙氨酸和组氨酸外,麦长管蚜中各类氨基酸的含量明显高于禾谷缢管蚜,其中单头麦长管蚜日分泌氨基酸量以亮氨酸和丙氨酸最高,分别达到了0.204 7 ng和0.137 7 ng,而禾谷缢管蚜以丙氨酸和亮氨酸最高,分别达到了0.154 3 ng和0.102 5 ng.随着蜜露含量的增加,各天敌的搜索与滞留时间显著延长,但逐渐趋于平缓,基本符合逻辑斯蒂增长.燕麦蚜茧蜂在两种蚜虫蜜露上的搜索与滞留时间差异显著,而瓢虫与草蛉类的搜索与滞留时间差异不显著,说明蜜露对捕食性和寄生性天敌的影响不同.
Sugars in honeydew of Sitobion avenae comprised glucose, saccharose, fructose and other two kinds of unknown sugars. The proportion of saccharose in the honeydew of S. avenae was the highest but no in Rhopalosiphum padi. Except threo-nine, free amino acids in honeydew of S. avenae and R. padi were the same. The quantity of free amino acids in honeydew of S. avenae was higher than that of R. padi except for alanine and histidine. Leusine (0. 204 7 ng) and alanine (0. 137 7 ng) were the two kinds of highest free amino acid in S. avenae secretions per aphid per day, and alanine (0. 154 3 ng) , leusine (0. 102 5 ng) in R. padi. With the increasing of honeydew dose, the retention and searching time of Aphidius avenae, Chrysopa sinica, Chrysopa septempuctata, Coccinella septempunctata and Propylaea japonica were longer,but the tendency were smooth. The retention and searching times of A. avenae to honeydews of the two aphid species were notably different, but C. sinica, C. septempunctata, C. septempunctata and P. japonica were not. Fig 3, Tab 1 , Ref 13
出处
《应用与环境生物学报》
CAS
CSCD
2003年第2期171-174,共4页
Chinese Journal of Applied and Environmental Biology
基金
国家973项目(GB20000126)
中国博士后基金项目部分内容~~
