红棕象甲触角感器的超微结构

Ultrastructure of antennal sensilla of Rhynchophorus ferrugineus(Olivier)

为明确红棕象甲成虫触角感器的超微结构、种类、数量和分布情况,利用扫描电子显微镜观察雌雄成虫触角感器的外部形态特征、类型和分布。结果表明,红棕象甲触角共有6种感器,分别为刷形感器、簇状感器、毛形感器、刺形感器、芽孢形感器和叉形感器,其中刷形感器和簇状感器分别有2种亚型,毛形感器有3种亚型,刺形感器有4种亚型。雌雄之间部分感器的着生位置和数量存在明显的性二型现象,刺形感器Ⅲ型、刺形感器Ⅳ型以及叉形感器可能与雌虫寻找产卵场所时识别寄主挥发物有关。

In order to determine the ultrastructure,types,quantity and distribution of antenna sensilla in Rhynchophorus ferrugineus(Olivier)adults,the external morphological characteristics,types and distribution of the antenna sensilla of R.ferrugineus were observed by scanning electronic microscopy.The results showed that there were six types of sensilla on the antennae of R.ferrugineus,namely sensilla brush,sensilla cluster,sensilla trichodea,sensilla chaetica,sensilla gemmiformium and sensilla furcatea,including two kinds of sensilla brush,two kinds of sensilla cluster,three kinds of sensilla trichodea,and four kinds of sensilla chaetica.There was sexual dimorphism in the position and quantity of sensilla between male and female.Sensilla chaeticaⅢ,sensilla chaeticaⅣand sensilla furcatea may be involved in the identification of host volatiles when the female looks for oviposition sites.