Biological Characteristics of Locusta migratoria migratoria Linnaeus in Northeast China
东北地区亚洲飞蝗的生物学特性

In order to find out the life cycle and the main biological characteristics of Locusta migratoria migratoria Linnaeus in Northeast China,raising and investigation were conducted during 2010—2011 in Jilin province.The results show that one generation of Locusta migratoria migratoria occurs annually in Northeast China,and the eggs are laid in soil to overwinter.The overwintering eggs begin to hatch in early or middle June and reach the hatching peak in middle June.The developmental duration of nymphs are 28~35 days,each spends 5~7days.The adult emergence time is in early July,and reaches the eclosin peak period in middle July.After about a week the adult male and female begin to copulate,and reach the copulation peak in late July.The adult begin to oviposit in early August after copulation for two weeks,and the oviposition activity has been extended to the early October.The environmental conditions have important influences on the growth and breeding activities of Locusta migratoria migratoria.