Abstract:
In this study, the morphology and ultrastructure of the compound eye of Asi. xanthospilota were examined by using scanning electron microscopy (SEM), transmission electron microscopy (TEM), micro-computed tomography (μCT), and 3D reconstruction. Spectral sensitivity was investigated by electroretinogram (ERG) tests and phototropism experiments. The compound eye of Asi. xanthospilota is of the apposition type, consisting of 611.00 ± 17.53 ommatidia in males and 634.8 0 ± 24.73 ommatidia in females. Each ommatidium is composed of a subplano-convex cornea, an acone consisting of four cone cells, eight retinular cells along with the rhabdom, two primary pigment cells, and about 23 secondary pigment cells. The open type of rhabdom in Asi. xanthospilota consists of six peripheral rhabdomeres contributed by the six peripheral retinular cells (R1~R6) and two distally attached rhabdomeric segments generated solely by R7, while R8 do not contribute to the rhabdom. The orientation of microvilli indicates that Asi. xanthospilota is unlikely to be a polarization-sensitive species. ERG testing showed that both males and females reacted to stimuli from red, yellow, green, blue, and ultraviolet light. Both males and females exhibited strong responses to blue and green light but weak responses to red light. The phototropism experiments showed that both males and females exhibited positive phototaxis to all five lights, with blue light significantly stronger than the others.
摘要:
在这项研究中,Asi复眼的形态和超微结构。xanthospilota用扫描电子显微镜(SEM)检查,透射电子显微镜(TEM),显微计算机断层扫描(μCT),和三维重建。通过视网膜电图(ERG)测试和向光性实验研究了光谱灵敏度。阿西的复眼。xanthospilota属于并置类型,男性为611.00±17.53眼病,女性为634.80±24.73眼病。每个小眼都由一个平面下凸角膜组成,由四个视锥细胞组成的锥体,八个视网膜细胞和横纹肌,两个原代色素细胞,和大约23个次级色素细胞。Asi中的开放型横纹肌。xanthospilota由六个外周视网膜细胞(R1〜R6)贡献的六个外周横纹肌和两个仅由R7产生的远端附着的横纹肌节段组成,而R8对横纹肌没有贡献。微绒毛的取向表明Asi。xanthospilota不太可能是对极化敏感的物种。ERG测试表明,男性和女性对红色刺激都有反应,黄色,绿色,蓝色,和紫外线。雄性和雌性都对蓝光和绿光表现出强烈的反应,但对红光表现出微弱的反应。向光性实验表明,雄性和雌性对所有五种光都表现出正的趋光性,蓝光明显强于其他人。