亚洲柑桔木虱体色变化规律的研究  

Temporal changes in color in Diaphorina citri

作　　者：吴丰年[1] 梁广文[1] 岑伊静[1] 高娃[1] 

机构地区：[1]华南农业大学昆虫生态研究室,广州510642

出　　处：《应用昆虫学报》2013年第4期1085-1093,共9页Chinese Journal of Applied Entomology

基　　金：公益性行业(农业)科研专项(201003067-01);广东现代农业产业技术体系建设专项资金(LNSG-11)

摘　　要：亚洲柑桔木虱Diaphorina citri Kuwayama为黄龙病的媒介昆虫。本文研究了其雌雄成虫在刚羽化、羽化后3 h、交配盛期和产卵盛期的腹部和前翅颜色变化规律,明确了每个时期的主要体色,同时探讨了不同季节、虫口密度和寄主条件对体色变化的影响。结果表明,雌雄木虱羽化后前翅颜色均由白色→黑色→红褐色渐变,木虱雌成虫腹部颜色随时间推移由黄绿色→灰白色→蓝色→橙色渐变,雄虫由黄绿色→灰黑色→橙色渐变。季节、寄主和虫口密度的变化对雌虫腹部颜色构成有一定的影响,但对雄虫基本上没有影响。不同条件下雌虫腹部的主要颜色为蓝色或橙色,雄虫均以橙色为主,其次为灰黑色,表明木虱成虫多处于交配期或产卵期。木虱5龄若虫的体色变化也较大。多数条件下木虱的性比接近于1∶1,仅春秋季雌性比例略低于雄性。通过观察木虱的体色变化规律可以初步判断其羽化情况和性别,估计羽化期、交配期和产卵盛期,作为木虱生物学特性研究和预测预报的参考。Change in the color of 5th instar nymphs and the abdomens and the forewings of adult Diaphorina cirri Kuwayama were studied. Adult color was observed immediately after emergence, 3 hours after emergence, and during the peak mating period and peak oviposition period. The influence of season, host plant and population density on adult color in males and females was also investigated. The results show that forewing color in both females and males followed a sequence of white to black to red brown after emergence. The abdomen color of females changed from olivine to grayish white to blue to orange, whereas that of males changed from olivine to dark gray to orange. The proportions of females with different colored abdomens varied seasonally and with host plant and population density, but that of males did not. The main abdomen color of females was blue or orange, whereas most males abdomens were orange, followed by dark gray. The color of 5th instar nymphs also changed as they got older. The sex ratios under different conditions were approximately 1 ： 1, but there were fewer females than males in spring and autumn.

关 键 词：亚洲柑桔木虱 体色 雌雄性比 

分 类 号：S436.66[农业科学—农业昆虫与害虫防治]