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冬虫夏草大量人工培植的关键之一是寄主昆虫的规模化饲养,本文对西藏林芝地区冬虫夏草生境中不同土壤基质在室内对蝙蝠蛾幼虫生长的影响以及寄主幼虫对5种植物的取食行为、嗅觉反应进行了系统研究。结果表明蝙蝠蛾幼虫偏好土质疏松、渗透性好的土壤,土壤因子中湿度和有机质含量与蝙蝠蛾幼虫存活率成正相关。蝙蝠蛾3龄幼虫对适生地植物的取食选择性与嗅觉反应趋性顺序为鹅绒委陵菜>珠芽蓼>小大黄>圆穗蓼>羊角天麻;进一步Spearman相关分析显示,幼虫对各植物的选择系数与可溶性糖(R=0.850,P<0.05)和粗蛋白(R=0.898,P<0.05)都存在显著的正相关关系,而与粗纤维(R=-0.952,P<0.05)有着显著的负相关关系,与粗灰分(R=-0.391,P=0.516)之间没有显著的相关关系;取食鹅绒委陵菜、珠芽蓼后的幼虫单头虫重显著大于取食其他植物的幼虫。这一研究结果为冬虫夏草寄主昆虫规模化饲养提供了理论依据。
One of the keys to the artificial cultivation of Cordyceps sinensis was the large-scale rearing of host insects. The effects of different soil matrices in vivo on the growth of the bat moth larvae in the Nyingchi region of Nyingchi, Tibet, as well as the feeding behavior, olfactory response Conducted a systematic study. The results showed that the bat moth larvae prefer soil with loose soil and good permeability, and the soil moisture and organic matter content positively correlated with the survival rate of the bat moth larvae. The order of feeding selectivity and olfactory response of the 3rd instar larvae of the bat moth to suitable plants was order: Potentilla anserina> Polygonum rhynchophylla> Rhubarb> Polygonum cylindrica> Gastrodia elata; Further Spearman correlation analysis showed that the There was a significant positive correlation between the selection coefficient and soluble sugar (R = 0.850, P <0.05) and crude protein (R = 0.898, P <0.05) (R = -0.391, P = 0.516). The larval weight of Larvae fed on Potentilla anserina and Polygonum viviparum was significantly higher than that of other plants . The results of this study provide a theoretical basis for the large-scale breeding of Cordyceps sinensis host insects.