摘要
试验研究表明 ,萝卜蚜 (Lipaphiserysimi)有翅型出现的百分率与生殖温度、生长温度、母蚜类型、寄主叶老化有密切关系。将在 15℃恒温下由无翅成蚜出生的萝卜蚜饲养在 15℃ ,2 0℃ ,2 5℃恒温下 ,有翅蚜率分别为 6 9.2 % ,5 8.6 %和33.4 %。当生殖温度为 15℃ ,生长温度为 2 5℃时 ,有翅蚜后代的有翅型率 (11.8% )显著低于无翅蚜后代的有翅型率(33.4 % )。当生殖温度为 2 0～ 2 5℃时 ,有翅蚜后代的有翅型率仅为 4 .7%～ 6 .9%。在老化叶片上出生和生长的蚜虫的有翅型率高达 93.1% ,若将新出生在老化叶上的若蚜转移到嫩叶上生长 ,有翅蚜率降为 2 2 .3%。在 2 0～ 2 5℃恒温下 ,有翅蚜若蚜期为 8.0～ 9.8d ,有翅成虫寿命 17.6d ,每雌产蚜 37.9～ 39.0头。
The occurrence of alate turnip aphid ( Lipaphis erysimi) and its development and reproduction were studied in this paper. Alate ratios decreased as the bearing and rearing temperature increased from 15℃ to 20℃ and 25℃. Significantly higher alate ratio (69.2%) was recorded when nymphs were born and reared at 15℃ compared with 11.76% at 25℃. Fewer alate forms developed when the nymphs were born by alate mother than the nymphs were born by wingless mother. A very high alate ratio(93.1±1.2%) was observed when nymphs were born and reared on old leaves, compared to 22.3±2.4% when nymphs were born on old leaves and reared on young leaves. A maternal and nymph wing determination mechanism was suggested. Newly born nymphs took 20.4, 15.8, 9.8 and 8.0 d to develop to alate adults when they were reared on cabbage at 10℃, 15℃, 20℃, 25℃, respectively. Winged adults survived 12.6 d at 15℃ and 17.2～17.7 d at 20～30℃, compared to only 3.7 d on average at 35℃. Higher reproductive rates (37.9 and 39.0 nymphs/female) were found at 20℃ and 25℃, compared to 7.9, 11.9 and 1.3 nymphs/female at 15℃, 30℃ and 35℃ respectively.
出处
《西南农业大学学报（自然科学版）》
CSCD
北大核心
2002年第1期17-20,共4页
Journal of Southwest Agricultural University
