二种改进人工饲料对红脉穗螟生长发育和繁殖的影响

在温度(29±1)℃和相对湿度75%±5%条件下,研究了2种改进人工饲料和天然饲料椰子幼果对红脉穗螟Tirathaba rufivena Walker生长发育、繁殖力和营养的影响。结果表明:与天然饲料相比,用改进人工饲料饲养的红脉穗螟幼虫生长发育速度、幼虫存活率、蛹重及产卵量均提高;幼虫相对生长率(RGR)、食物利用率(ECI)及食物转化率(ECD)均显著提高,而相对取食量(RCR)则显著降低。表明红脉穗螟幼虫对2种人工饲料有很好的适应性,可用于大量饲养。

Effects of two improved artificial diets on the development and reproduction of Tirathaba rufivena

Growth,survival,fecundity and nutrition of Tirathaba rufivena Walker raised on two artificial diets and a natural food were studied at（29 ± 1）℃ and（75 ± 5）% RH.Larvae reared on the artificial diets had faster larval growth and development,a higher larval survival rate,heavier pupae and higher adult fecundity than those reared on the natural food（young coconut fruit）.The relative growth rate（RGR）,efficiency of conversion of ingested food（ECI） and efficiency of conversion of digested food（ECD） of larvae fed the artificial diets were significantly higher than those of larvae fed the natural food.Conversely,the relative consumption rate（RCR） of larvae fed the artificial diets was significantly lower than those of larvae fed the natural food.These results indicate that the two kinds of artificial diets used are suitable for mass rearing T.rufivena.