叶色草蛉雌性生殖系统发育级别及在测报上的应用

ON THE DEVELOPMENTAL PROGRESS GRADATION OF FEMALE REPRODUCTIVE SYSTEM OF CHRYSOPA PHYLLOCHROMA WESMAEL AND ITS USE IN OCCURRENCE PERIOD FORECASTING

系统解剖并观察了叶色草蛉雌性生殖系统,根据其在生殖过程中的解剖学变化特征,将雌性生殖系统发育分为5级,其中卵巢发育为2、3、4级的成虫分别处于产卵初期、盛期和末期;同时各级卵巢鲜重和核酸、蛋白质、磷脂及酸溶性磷等主要生化成份含量变化测定表明,各级卵巢差异明显,3级卵巢最重,4级与2级次之,5级与1级最低,结果进一步验证了雌性生殖系统发育解剖学分级的正确性。该分级标准予1997年在山东德州市棉田进行测报应用,结果表明,田间叶色草蛉雌虫生殖系统发育级别与棉田产卵量存在较大的相关性,当雌成虫生殖系统分别发育至3级和4级的个体占50％以上时,3～4d后田间卵量则分别进入盛期和末期。

The developmental progress of female reproductive system of Chrysopa phyllochroma Wesmael was divided into 5 levels according to its anatomic characteristics, and the gradation was verified by the corresponding contents main biochemical components including nucleic acid, protein, phospholipid etc. in the different levels of varies. As these developmental levels were used for forecasting the occurrence periods of C. phyllochroma in cotton field , it was found that the peak and terminal periods of its eggs occurred at the times 3-4 days after the individuals of 3rd and 4th levels had been over 50% of the total population, respectively.