关键词: 净初级生产力, 净初级生产力, MOD17A3, 青海共和盆地

Abstract: The aim was to expound the ultrastructure of antennal sensilla of Rhyacionia pinicolana (Doubleday). The shoots of scotch pine, Pinus sylvestris var. mongolica, damaged by moths were collected from forest fields, and then the moths were raised to adults in the indoor. The external morphology of antenna and sensilla were observed by scanning electron microscopy. Results showed that the adult antennae shape was filamentous, gradually tapering from the base to the end, with a total length of about 3.73-5.46 mm. And the scape was short, a long cylindrical shape. The pedicel was inflated like a round ball, which was covered with a lot of squama on its surface. The flagella consisted of 40-44 subsegments. Also five types of sensilla on surface of R. pinicolana were observed including sensilla trichodea, sensilla auricillica, sensilla coeloconica, sensilla chaetica and b?hm bristles. Furthermore, the antenna length and types of male and female showed dimorphism, though the distribution characteristic of sensilla between different genders was very similar. On this foundation, the functions of each type of sensilla were speculated. All these results were of great value to in- depth understanding of the chemosensory system and helpful to revealing the host selection behavior mechanism.