摘要
家蚕Ｂｏｍｂｙｘｍｏｒｉ（Ｌ．）血液过氧化氢酶（ＣＡＴ）活力随发育时期呈现有规律的动态变化。在幼虫期，ＣＡＴ活力以龄初、龄末较高，而龄中较低；化蛹后，ＣＡＴ活力迅速上升，至中期达到峰值，随后迅速下降直至羽化。不同性别间ＣＡＴ活力均以雄性较高；不同蚕品种间ＣＡＴ活力有很大差异；饲料对ＣＡＴ活力有一定影响，人工饲料育蚕ＣＡＴ活力略大于桑叶育的；高温冲击和氟化物添食都能引起ＣＡＴ活力的显著变化，但变化的幅度因品种、性别、时期和添食剂量而有所不同。研究认为，家蚕血液ＣＡＴ活力与其发育变态、体内代谢均具有密切关系，逆境条件下ＣＡＴ活力变化幅度的大小可以作为家蚕抗逆性强弱的一个重要生理指标。
The catalase (CAT) activity of haemolymph in the silkworm, Bombyx mori (L.) exhibited a regular dynamic change through the larvapupamoth development. During larval stage, the CAT activity in any instar was higher at early and late stage than at middle stage; after pupation, the CAT activity rised rapidly and reached a peak at 48-96 h, then declined drastically until eclosion. The CAT activity of the male was higher than that of the female. There was great variation of CAT activity among silkworm races. Artificial diet could also affect CAT activity as compared with that fed on mulberry leaves. Both high temperature shock and fluoride solution administration could cause great change in CAT activity and the degree of change varied with silkworm race, sex, stage and administration dose. In view of above, it reveals that the CAT activity is closely related to larval development, metamorphsis, as well as body metabolism, and the change of CAT activity under adverse conditions could be taken as one of the most important physiological index for larval resistance.
出处
《昆虫学报》
CAS
CSCD
北大核心
1998年第2期124-129,共6页
Acta Entomologica Sinica
