论文部分内容阅读
在一定空间(7238厘米~3)的养虫器内,豚草条纹叶(虫甲)成虫的生殖力随密度的增加而下降。单对饲养的生殖力最高,平均产卵386.7粒;当密度为18和25头时,产卵仅157.6和50.4粒。幼虫期以及蛹期的死亡率,在不同空间中均随密度的增加而增加,随空间的增大,各密度下的死亡率相应减少。食料质量是影响幼虫存活的重要因素之一,用豚草上、中、下部叶片饲养幼虫,其死亡率分别为10％、70.3％和97.6％。幼虫期累计食叶量可达90.58毫克鲜重,随着日龄增加,近似消化力逐渐下降,摄入物质转换为体物质的效率和消化食物转换为体物质的效率随日龄的增加而增加。成熟成虫的取食量基本恒定,平均每48小时食叶28.01毫克鲜重,其近似消化力为64.2％。刚羽化出土的成虫,达到成熟进入生殖生长所需的食叶量约为213.22毫克鲜重。
In a certain space (7238 cm ~ 3) of the bug holder, ragweed striped (Anchovy) adult fecundity decreased with increasing density. The single fecundity had the highest fecundity with an average of 386.7 spawns. When the densities were 18 and 25, spawning was only 157.6 and 50.4. The larval and pupal mortality rate increased with the increase of density in different space. With the increase of space, the mortality rate under each density decreased accordingly. Food quality is one of the important factors affecting the survival of larvae. The larvae were fed on upper, middle and lower leaves of ragweed with the mortality of 10%, 70.3% and 97.6%, respectively. The larvae accumulated leaf mass up to 90.58 mg fresh weight, with the increasing age, the approximate digestibility decreased gradually, the intake of substances into substances and the efficiency of digestion of food into substances increased with increasing efficiency . Mature adult food intake was basically constant, with an average of 28.01 mg fresh leaves per 48 hours, the approximate digestibility of 64.2%. The newly emerged adults, reaching about 213.22 mg fresh weight of mature leaves needed to mature into reproductive growth.