柞栎象成虫触角感受器超微结构

摘要

为研究柞栎象（ Curculio dentipes）寄主定位机制，利用环境扫描电镜对柞栎象触角形态、感受器的类型及分布特点等进行了观察。结果表明：柞栎象触角上有感受器5种类型10个亚型，分别为：刺形感受器2个亚型、毛形感受器4个亚型、锥形感受器、齿形感受器2个亚型和腔形感受器。柞栎象雌雄成虫触角性二型不明显，很难作为形态上性别鉴定的可靠依据。雄虫触角感受器数量多于雌虫，但差异不显著。柞栎象触角感受器从基部至端部（柄节至棒节第4亚节）有明显的分化趋势。%For the biological characteristics of Curculio dentipes, we used environmental scanning electron microscopy (ESEM) to observe and describe the morphology of antennal sensilla on adults of both sexes .We observed ten different types of sen-silla, two types of sensillachaetica , four types of sensillatrichodea , one type of sensillabasiconica ,two types of sensilladen -tiform and one type of sensilla cavity .The differentiation trend of antennal sensilla was not obvious , and it tended to more refined from the base to the end of antennas .Antennae of males had more sensilla than those of females , but it is not signif-icantly.There were obvious differentiation from base to top of sensilla .