Fine structure of the compound eyes of the crepuscular moth Grapholita molesta (Busck 1916) (Lepidoptera: Tortricidae)
文献类型： 外文期刊
作者： Yang, Xiaofan 1 ; Ran, Hongfan 1 ; Jiang, Yueli 2 ; Lu, Ziyun 1 ; Wei, Guoshu 3 ; Li, Jiancheng 1 ;
作者机构： 1.Hebei Acad Agr & Forestry Sci, Inst Plant Protect, Key Lab IPM Crops Northern Reg North China, Minist Agr & Rural Affairs China, Baoding, Hebei, Peoples R China
2.Henan Acad Agr Sci, Inst Plant Protect, Zhengzhou, Henan, Peoples R China
3.Hebei Agr Univ, Coll Plant Protect, Baoding, Hebei, Peoples R China
关键词： Tortricidae; compound eye; ultrastructure; distal rhabdom; TEM
期刊名称：FRONTIERS IN PHYSIOLOGY （ 影响因子：4.0； 五年影响因子：4.7 ）
ISSN：
年卷期： 2024 年 15 卷
页码：
收录情况： SCI
摘要： Morphological organization, ultrastructure and adaptational changes under different light intensities (10000, 100, 1, and 0.01 mW/m2) of the compound eye of the oriental fruit moth Grapholita molesta (Busck 1916) were investigated. Its superposition type of eyes consist of approximately 1072 ommatidia in males and 1029 ommatidia in females with ommatidial diameters of around 15 mu m. Each ommatidium features a laminated corneal lens densely covered by corneal nipples of 256 nm in height. Crystalline cones are formed by four cone cells, proximally tapering to form a narrow crystalline tract with a diameter of 1.5 mu m. Eight retinula cells, two primary and six secondary pigment cells per ommatidium are present. The 62.3 mu m long rhabdom is divided into a thin 1.8 mu m wide distal and a 5.2 mu m wide proximal region. Distally the fused rhabdom consists of the rhabdomeres of seven retinula cells (R1-R7) and connects with the crystalline cone. In the proximal rhabdom region, the pigment-containing retinula cell R8 occupies a position in centre of the rhabdom while R1-R7 cells have taken peripheral positions. At this level each ommatidial group of retinula cells is surrounded by a tracheal tapetum. In response to changes from bright-light to dim-light adaptations, the pigment granules in the secondary pigment cells and retinula cells migrate distally, with a decrease in the length of crystalline tract.
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