皂荚合欢罗蛾的生物学特性研究

Study on the Biological Characteristics of Homadaulaanisocentra of Gleditsia sinensis

室内用皂荚叶饲喂,对合欢罗蛾的发育历期、幼虫龄期、各虫态存活率、成虫寿命等生物学特性进行了系统研究。在温度(26±1)℃,湿度为(70±5)%条件下,合欢罗蛾末龄幼虫有5龄和6龄2个龄期,其中82%为5龄,18%为6龄。幼虫1~6龄历期分别为5.43、3.46、3.92、5.69、7.45、7.25天。合欢罗蛾卵、幼虫、预蛹、蛹、成虫、全世代历期分别为4.81、28.09、2.50、10.92、7.86、37.78天。合欢罗蛾卵孵化率、幼虫存活率、化蛹率、羽化率分别为65.73%、55.00%、90.91%、98.60%,全世代成活率为31.22%。合欢罗蛾完成一个世代最短为46天,最长为58天。雌雄成虫体长差异不显著,雌虫体长为0.73 cm,雄虫体长为0.71 cm。雌虫寿命平均为7.64天,雄虫寿命平均为8.58天。合欢罗蛾单雌产卵量最高为52粒。

The developmental period,larval stage,survival rate and Life span of different insect states were studied by feeding the leaves of Gleditsia sinensis in laboratory.Under the conditions of(26±1)℃and(70±5)%humidity,there were 5~6 instars of the last instar larvae,among which 82%were 5 instar and 18%were 6 instar.The duration of egg,Larva,prepupa,pupa,adult and whole generation were 4.81,28.09,2.50,10.25,7.86 and 37.78 days respectively.The hatching rate,larval survival rate,pupation rate and mergence rate were 65.73%,55.00%,90.91%and 98.60%respectively,and the survival rate of the whole generation was 31.22%.The shortest and longest generations of Homadaula anisocentra are 46 and 58 days respectively.There was no significant difference in body length between males and females.The body length of females and males was 0.73 cm and 0.71 cm respectively.The average life span of female is 7.64 days and that of male is 8.58 days.The highest number of eggs laid by a single female is 52.The life span of female was slightly lower than that of male,6.64 days for female and 8.58 days for Male,the difference was significant.