家蚕追寄蝇低温耐受力的试验

Study on the tolerance to low-temperature of Exorista sorbillans

本试验通过对化蛹第2d、5d、8d的家蚕追寄蝇蛹分别进行了7d、15d、30d的低温冷藏处理后,对家蚕追寄蝇的羽化率和对低温的耐受情况进行比较分析,研究发现:(1)经不同时间低温处理后家蚕追寄蝇的羽化率呈现一定的差异;(2)不同蛹期家蚕追寄蝇对低温的耐受程度存在一定的差异;(3)家蚕追寄蝇对低温耐受时间相对较短;(4)由于家蚕追寄蝇对低温具有一定的耐受力,在大规模繁育和放养过程中具有一定的应用价值。

In this test, the pupae of 2,5,8 days of Exorista sorbillans were divided into different group and placed in low-temperature for different time（7d, 15d,30d）. Then the eclosion ratio of Exorista sorbillans was compared and analyzed. The study found that： （1） When pupaes were placed in low-temperature for different time, there are different eclosion ratio among them ; （2） Among different pupal stage, the tolerance to low temperature of Exorista sorbillans is different. （ 3 ） The tolerance time to low temperature of Exorista sorbillans is a little short. （3）As Exorista sorbillans has certain tolerance to low temperature, it can be applied in the process of largescale breeding and releasing of Exorista sorbillans.