Marion-Poll F C, Guillaumin D, Masson C
INRA-CNRS (URA 1190), L.N.C.I., B.P.23, F-91440 Bures-sur-Yvette, France.
Cell Tissue Res. 1992 Mar;267(3):507-18. doi: 10.1007/BF00319373.
Sensilla on legs and ovipositor of the moth Ostrinia nubilalis were investigated by light and scanning electron microscopy. The ovipositor is composed of two papillae densely packed with medium length mechanoreceptor sensilla (MRb: 80-160 microns, n = 420-460). Long mechanoreceptor sensilla (MRa: 250-300 microns, n = 20-24) and contact chemoreceptors (CRa: 30-40 microns, n = 20-28) are evenly distributed at the periphery of these papillae. Legs support contact chemoreceptors (CRa), scattered among the scales. The pretarsus structure of each leg includes a single contact chemoreceptor (125 microns) inserted dorsally. The fifth tarsomere bears a ventral area without scales on which contact chemoreceptors are disposed in two parallel rows (CRb: 40-60 microns). A sexual dimorphism was found in the number and density of these sensilla (females: mean = 5.3, SD = 1.0; males: mean = 3.3, SD = 0.7), and in the size of the sensory field. The possible involvement of these sensory structures in oviposition site selection is discussed.
利用光学显微镜和扫描电子显微镜对欧洲玉米螟成虫腿部和产卵器上的感器进行了研究。产卵器由两个乳突组成，乳突上密集分布着中等长度的机械感受器（MRb：80 - 160微米，n = 420 - 460）。长机械感受器（MRa：250 - 300微米，n = 20 - 24）和接触化学感受器（CRa：30 - 40微米，n = 20 - 28）均匀分布在这些乳突的周边。腿部有接触化学感受器（CRa），散布在鳞片之间。每条腿的跗节末端结构包括一个背侧插入的单个接触化学感受器（125微米）。第五跗节有一个无鳞片的腹面区域，接触化学感受器在该区域排成两排平行分布（CRb：40 - 60微米）。在这些感器的数量、密度以及感觉场大小方面发现了两性差异（雌性：平均值 = 5.3，标准差 = 1.0；雄性：平均值 = 3.3，标准差 = 0.7）。本文还讨论了这些感觉结构在产卵位点选择中可能发挥的作用。
