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Ultrastructural comparison of the compound eyes of the Asian corn borer Ostrinia furnacalis (Lepidoptera: Crambidae) under light/dark adaptation.
Arthropod Structure & Development ( IF 2 ) Pub Date : 2019-11-25 , DOI: 10.1016/j.asd.2019.100901
Qing-Xiao Chen 1 , Ying-Wu Chen 1 , Wen-Liang Li 1
Affiliation  

The Asian corn borer Ostrinia furnacalis is one of the most destructive pests of maize throughout eastern Asia and the South Pacific. In the present study the fine structure of the compound eyes of adult O. furnacalis was investigated under light/dark adaptation using light and electron microscopy. The compound eyes of male and female O. furnacalis are superposition eyes with electron-lucent clear zones. The sexual differences of the compound eyes of O. furnacalis are mainly reflected in eye size rather than ommatidial ultrastructure. Each ommatidium of both sexes contains 12 retinula cells, one of which is the basal retinula cell. All the retinula cells form a centrally-fused, two-tiered rhabdom, whose distal layer passes through the clear zone and distally connects with the crystalline cone. The ultrastructural changes under light/dark conditions mainly involve the rhabdom occupation ratio to retinula cell volume in the proximal layer of the rhabdom as well as the dimensions of the subcorneal zone and the crystalline tract. Pigment movements occur within the retinula cells and primary pigment cells, but are undetectable within the secondary pigment cells. Regardless of light or dark adaptation, in other words, the pigments never migrate into the clear zone.

中文翻译:

暗/暗适应下亚洲玉米bore(Ostrinia furnacalis,鳞翅目:Crombidae)的复眼的超微结构比较。

亚洲玉米boreOstrinia furnacalis是整个东亚和南太平洋地区最破坏性的玉米害虫之一。在本研究中,使用光镜和电子显微镜在暗/暗适应下研究了成年O.furnacalis复眼的精细结构。雄性和雌性O. furnacalis的复眼是具有电子透明区域的叠加眼。香茅的复眼的性别差异主要反映在眼睛的大小上,而不是脐带的超微结构。男女的每个眼孔都包含12个视网膜细胞,其中一个是基底视网膜细胞。所有的视网膜细胞形成一个中央融合的两层横纹,其远端层穿过透明区,并在远端与晶状体相连。在明暗条件下的超微结构变化主要涉及横纹肌近端层的横纹肌占有率与视网膜细胞体积以及角膜下区和晶状体的尺寸。色素运动发生在视网膜细胞和原代色素细胞内,但在次生色素细胞内无法检测到。换句话说,无论是暗调还是暗调,颜料都不会迁移到透明区域。
更新日期:2019-11-01
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