沟眶象触角感器的扫描电镜观察

应用扫描电镜观察沟眶象触角感器的类型、数量和分布。结果表明,沟眶象触角上共有5类10种感器,分别为4种锥形感器、2种刺形感器、2种毛形感器、1种栓锥形感器和1种柱形感器。根据感器的分布、形态特征结合已有的文献描述,推测了感器可能的功能。触角感器在每节上的数量和分布不同,在背腹面的分布差异不显著。雌雄成虫触角上感器总的数量存在显著差异。

Observation on antennal sensilla of Eucryptorrhynchus chinenis with scanning electron microscope

Type typology,number and distribution pattern of antennal sensilla were studied in the weevil Eucryptorrhynchus chinenis(Olivier)(Coleoptera,Curculionidae)with scanning electron microscopy.The results showed that there were 5 types and 10 kinds of sensilla,comprising 4 kinds of basiconic sensilla,2 kinds of chaetica sensilla,2 kinds of trichoid sensilla,1 kind of styloconica sensilla and 1 kind of cylindric sensilla.The possible functions were discussed on the basis of the distribution,shape character of sensilla as well as the correlative references.Quantity and distribution of sensilla were different in each segment of antenna.No remarkable difference in the type,number and distribution of antennal sensilla on the antennal dorsal and ventral areas as found.There were remarkable sexual differences in total number of antennal sensilla.