棉铃虫幼虫感染白僵菌后呼吸速率和食物利用效率的变化  

THE CHANGES OF THE RESPIRATORY RATE AND NUTRITION UTILIZATION EFFICIENCY OF HELICOVERPA ARMGERA (HUBNER) INFECTED BY BEAUVERIA BASSIANA

作　　者：孙鲁娟[1] 吴孔明[1] 郭予元[1] 

机构地区：[1]中国农业科学院植物保护研究所,北京100094

出　　处：《植物保护学报》2000年第4期322-326,共5页Journal of Plant Protection

基　　金：国家"九五"科技攻关项目(96-005-01-04)

摘　　要：研究了球孢白僵菌Ｂｅａｕｖｅｒｉａ ｂａｓｓｉａｎａ侵染铃虫对３龄幼虫呼吸速率和食物利用的影响。结果表明，１×１０＾６和１×１０＾８分生孢子／ｍｌ孢子悬浮液处理后，高浓度处理幼虫前３ｄ的呼吸速率较对照下降幅度缓慢，但从第４ｄ起呼吸速率明显下降。低浓度组在处理后的前２ｄ呼吸速率上升，随后逐渐下降。总体下，白僵菌侵染后棉铃虫幼虫的呼吸强度较对照呈先显著上升后迅速下降的趋势变化。The physiological changes of Helicauerpa armigera(Hubner) infected byBeauveria bassiana were investigated in the laboratory. The results showed that the respiratory rate of the larvae, which was in high (1× 108conidial/ml) concentration treatment, decreased slowly in the first 3 days compared with the control, however, it decreased drastically from the 4th day. For the low (1 × 106conidial/ml) treatment, the respiratory rate increased in the first 2 days, then decreased gradually. In general, the larvae of cotton bollworm tended to speed up respiration firstly and then decreased in the course of infection . As for the food consumption, weight gain, fecal production and nutrition indexes such as net efficiency (ECD), gross efficiency (ECI), no significant difference was found between the 2 treatments and the control in the first 2 days, but there was significant difference along with the penetration of the integument by growing hyphae.

关 键 词：棉铃虫 白僵菌 呼吸速率 食物利用效率 生物防治 

分 类 号：S435.62[农业科学—农业昆虫与害虫防治]