摘要
通辽地区捕食性瓢虫一年发生三或四代,3月上旬出哲,首先出现在易感蚜虫的植物上觅食,第一代发生于5月下旬～7月中旬,第二代于6月上旬发生,第三代于6月下旬发生,第四代于7月中下旬发生,世代重叠现象严重,9月下旬10月初以二、三或四代成虫越冬.七星瓢虫、异色瓢虫越冬有群集性.捕食性瓢虫食性广,食量大,对蚜类发生有追随性,攻击取食,有卵食习性.温度、湿度、光照、风雨对成幼虫活动、取食、个体发育有影响,无孤雌生殖现象.捕食性瓢虫是本地区蚜虫等害虫的很好天敌,应加以保护.
There were three or four generations of predatory ladybirds in the regions of Tongliao a year.They moved out of the league of Zhe in the first ten days on March,they appeared to look for food on the plants which easily suffer from aphides first,The first generation occurrence in may last ten days of to middle ten days of July,the second generation occurence in first ten days of June,the third generation occurrence in last ten days of June,the fourth on behalf in middle ten days on June occurrence,generation layer after layer phenomenon serious,last ten days of September and beginning of October on behalf at the adult in winter.Coccinella septempuctata Linn and Leis axyridis passed the winter gregariously.Predatory ladybirds had good and large appetite.They had the quality of following the aphides appearing,attacking and preying on ,and had the quality of eating eggs.Their adults and larvae could be influenced by the temperature,moisture,illumination,winds and rains on their activity,preying on,and individual's growth as well.They could't reproduce only by female.
出处
《内蒙古民族大学学报（自然科学版）》
2003年第5期436-437,共2页
Journal of Inner Mongolia Minzu University：Natural Sciences
关键词
通辽
捕食性
瓢虫
Tongliao
Predatory
Ladybirds
