作　　者： ; ; ; ; ;

机构地区： 福建省农业科学院

出　　处： 《福建农林大学学报（自然科学版）》 2003年第4期434-437,共4页

摘　　要： 对幼虫头部进行电镜扫描,发现头部下方有一对3节的触角,其端节及第2节上具有感觉器,主要为栓锥形感觉器和锥形感觉器;外颚叶端部边缘和外颚叶侧壁有感觉器,主要为栓锥形感觉器和锥形感觉器;下颚须2节,端节侧壁有2个板形感觉器,端节端部有8个栓锥形感觉器;在两下颚间和下唇后方有锥形感觉器群,下唇须上有栓锥形感觉器和锥形感觉器各一个,在吐丝器前方还有—对锥形感觉器.同时通过对鳞翅目幼虫的化学感觉器、感觉细胞和感觉谱进行讨论,探讨小菜蛾化学感觉器的功能. Larvae head of diamondback moth, Plutella xylostella was investigated by electron microscope scanning. The result was as follows: the antenna on the head had 3 segments and there were some sensilla on the last and 2nd segments, which were mainly styloconic or basiconic; the dominant sensilla on the galea were also styloconic sensillum and basiconic sensillum; maxillary palpus had 2 segments which bad two placoid sensilla and 8 styloconic sensilla; there were a group of basiconic sensilla around the area where galea, maxillary palpus and labium were located; maxillary palpus had basiconic sensilla and styloconic sensilla; a pair of basiconic sensilla was located on the front of fusulus. Contact-chemosensory basis of host-plant selection behavior of caterpillars was also discussed.

关 键 词： 小菜蛾 形态 化学感觉器 电镜扫描

领　　域： [农业科学] [农业科学] [生物学]