山楂叶螨雄螨繁殖潜力  

Reproduction potential of male adults of the hawthorn spider mite,Tetranychus viennensis(Acari:Tetranychidae)

作　　者：李定旭[1] 权澎琪 董钧锋[1] 胡镇杰 杨海博[1] 陈汉杰[2] LI Ding-Xu QUAN Peng-Qi DONG Jun-Feng HU Zhen-Jie YANG Hai-Bo CHEN Han-Jie(College of Forestry, Henan University of Science and Technology, Luoyang, Henan 471023, China Zhengzhou Fruit Research Institute, Chinese Academy of Agricultural Sciences, Zhengzhou 450009, China)

机构地区：[1]河南科技大学林学院,河南洛阳471023 [2]中国农业科学院郑州果树研究所,郑州450009

出　　处：《昆虫学报》2017年第5期562-569,共8页Acta Entomologica Sinica

基　　金：公益性行业(农业)科研专项经费项目(2011030020)

摘　　要：【目的】山楂叶螨Tetyanychus viennensis Zacher是我国北方落叶果树的重要害虫。本研究旨在探索山楂叶螨雄螨的繁殖潜力。【方法】采用叶碟饲养法,在室内温度25±1℃,相对湿度60%±10%,光周期16L∶8D条件下,研究了山楂叶螨雄螨的交配次数、交配时间及可繁育的雌性后代数。【结果】雄螨羽化后可立即进行交配,第1次交配的交配时间最长,随后的交配时间明显缩短;足以使雌螨充分受精的最短有效交配时间为50 s,远短于其正常的交配时间;雄螨终生交配授精雌螨数为26~37头,可繁育雌性后代688~989头,且与性比关系密切;雄螨日龄对其交配能力有明显的影响,日均交配次数在3日龄成螨内无明显变化,5日龄则显著减少,但在7日龄后仍可维持较高的交配能力;交配历史能显著地影响雄螨的交配能力,在经历20次交配后,雄螨日均交配次数显著降低,但即使经历30次交配仍可保持足够的授精能力。【结论】山楂叶螨雄螨具有较强的交配和授精能力。【Aim】The hawthorn spider mite,Tetranychus viennensis Zacher,is an important damaging pest on deciduous fruit trees in northern China.This study aims to explore the reproduction potential of male adults of T.viennensis.【Methods】Leaf disc bioassay was employed to investigate the number of matings in adult males,mating duration,the number of daughters fathered by a male and the percentage of males in offspring of T.viennensis under the laboratory conditions of 25±1℃,60%±7% RH and a photoperiod of 16 L∶8D.【Results】Upon emergence of T.viennensis adults,males continued to mate with females until the end of their life.The copulation duration of the first mating of males was the longest and became significantly shorter in following matings.The least copulation duration of a male to inseminate a female was 50 s,much shorter than in nature.The newly emerged male adults copulated and inseminated 26-37 females,and contributed to 688-989 daughters over their lifetime,depending on the sex ratio.The age（in days） of male adults significantly affected their mating capability.The daily number of matings of male adults significantly decreased when they were 5 day-old,whereas had no obvious change when they were within 3 day-old.However,the male adults were still able to inseminate several females per day when they were over 7 day-old.The mating history of male adults imposed significant effects on their mating capability.The daily number of matings of male adults significantly decreased when they historically mated more than 20 times,but male adults could maintain the capability to inseminate females sufficiently even they had inseminated 30 females.【Conclusion】Male adults of T.viennensis have an extraordinary reproduction potential to copulate,inseminate and fertilize female adults.

关 键 词：山楂叶螨 繁殖 雄螨 交配 授精 雌性后代 

分 类 号：Q968[生物学—昆虫学]