冬虫夏草菌寄主小金蝠蛾人工饲养成虫生物学特性

小金蝠蛾是冬虫夏草菌的优良寄主之一,人工培育成虫能否正常交尾及产卵直接关系到种源的持续利用,是目前冬虫夏草人工培育产业的制约因子之一。本文通过对人工饲养小金蝠蛾两个世代(R1、R2)成虫的形态、羽化、交尾、产卵、寿命等生物学特征与其野生亲本进行比较,研究人工培育条件下小金蝠蛾成虫的交尾、产卵能力,为人工培育种源及种群的可持续利用提供依据。研究结果表明,人工饲养条件下小金蝠蛾成虫的平均体长、体重、含卵量、产卵量、寿命均为野生亲本>R1>R2,但在羽化、交尾、产卵等行为上野生亲本与R1、R2不存在明显差异;人工饲养两个世代幼虫的种群增长率分别为177.27%和117.56%,表明人工饲养条件下小金蝠蛾种群可实现持续利用。

Study on Biological Characteristics of Artificial Breeding Adults of Hepialus Xiaojinensis the Larval Host of Cordyceps sinensis

Hepialus xiaojinensis is one of the best host species of Cordyceps sinensis. In artificial culturing of C. sinensis, the reproductive ability in host adults of Hepialus is one of the limiting factors. In this study, the comparison experiments were conducted on the reproductive characteristics of H. xiaojinensis adults between wild parents and their artificial breeding descendants, and the biological characteristics, such as morpha, emergence, copulation, oviposition, life span, were observed. The results indicated, the weight of breeding adults is lighter and the life span is shorter than wild parents. The significant difference(P<0.01) in the oviposition amount between wild parents and breeding descendants adults was discovered. However, no significant difference (P>0.05) was presented between R1 and R2. Fortunately, the behaviors of emergence, copulation and oviposition were similar between wild parents and their artificial breeding descendants. Further more, the population growth rate of R2 and R3 was 177.27% and 117.56% respectively, therefore. The sustainable utility of the artificial breeding population of H. Xiavjinensis was obtained.