Impact of Exogenous Juvenile Hormone Analogue on Wax Excretion and Development of Chinese White Wax Scale (Ericerus pela Chavannes)
Impact of Exogenous Juvenile Hormone Analogue on Wax Excretion and Development of Chinese White Wax Scale (Ericerus pela Chavannes)
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DOI：
10.13275/j.cnki.lykxyj.2018.02.016
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发表时间：
2018-04-01
期刊：
影响因子：
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通讯作者：
Chen Xiao-ming
中科院分区：
文献类型：
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作者：
Liu Ni;Lu Qin;Chen Xiao-ming
[目的]研究外源幼激素类似物（JHA）对中华白蜡蚧分泌和发育的影响。[方法]将高、中、低浓度的JHA分别喷洒在二龄雄蚧上，涂抹在寄主树茎上，注射在寄主树茎上。[结果]试验结果表明，用中等浓度的JHA （2.5 mg.mL(-1)）喷施二龄雄虫，可显著改善中华白蜡蚧（pela Ericerus pela）的蜡分泌，昆明地区平均产出率达41.50%，峨眉地区平均产出率达25.56%。然而，实验结果显示两地区之间存在差异，其原因可能与两地区生态环境的差异有关。JHA对褐家蚕蛹发育的影响中，中、低浓度的JHA均能促进蛹重，高浓度的JHA对蛹重有抑制作用；JHA对蛹长的抑制作用随JHA浓度的增加而增强。JHA能促进蛹羽化，羽化率可达62.70%。62%。[结论]用中等浓度的JHA处理2龄雄幼虫，可显著增加褐皮蛾的蜡分泌。蛹长与蛹内JHA浓度呈负相关。蛹体质量表现为低浓度促进和高浓度抑制；在喷涂处理下，高浓度能显著提高黄颡鱼蛹的出苗率。蛹的羽化不受其体重和体长的影响。
[Objective]To study the effects of exogenous juvenile hormone analogue ('JHA) on Chinese white wax scale with focus on wax secretion and development. [Method] High, medium and low concentrations of JHA were sprayed on the second-instar male scale, smeared on and injected in the stem of host tree respectively. [Result] The results of test showed that spraying the male second-instar with medium concentration of JHA (2.5 mg.mL(-1)) can significantly improve the wax secretion of Chinese white wax scale (Ericerus pela), the average production rate in Kunming region reached 41.50%, the average production rate in Emei region reached 25.56%. However, the experimental results show difference between the 2 regions, the reason may be related to the difference of ecological environment in the two areas. For the effects of JHA on pupal development of E. pela, medium and low concentration JHA can promote the weight of pupa, but high concentration showed inhibition; the inhibition of JHA on pupal length was enhanced with the increase of JHA concentration. JHA can promote pupae eclosion, the eclosion rate could reach as high as 62.70% 81. 62%. [Conclusion] The treatment of 2nd instar male larvae with medium concentration of JHA could significantly increase the wax secretion of E. pela. There is a negative correlation between the length of pupa and JHA concentration in the E. pela. The body weight of E. pela pupae showed low concentration promotion and high concentration inhibition; Under spraying and smearing treatments, high concentration can significantly increase the emergence rate of E. pela pupae. The emergence of E. pela pupae is not influenced by its body weight and body length.