Relationship of color and polarization information in the butterfly lamina

蝴蝶叶片颜色与偏振信息的关系

• 批准号: 18F18807
• 负责人: 蟻川 謙太郎
• 金额: $ 1.47万
• 依托单位: The Graduate University for Advanced Studies
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for JSPS Fellows
• 财政年份: 2018
• 资助国家: 日本
• 起止时间: 2018-11-09 至 2021-03-31
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-18F18807/
• 关键词: insect; color vision; photoreceptor; lamina; lamina monopolar cell; spectral opponency; spatial opponency; modelling; Intracellular recording; Insect; Vision; Lamina; Spectral sensitivity; Spectral opponency; Papilio xuthus; Modelling

The eye of a butterfly Papilio consists of randomly distributed three spectrally distinct types of ommatidia. Each ommatidium contains nine photoreceptors (PRs) cells, which form a module called cartridge in the lamina with four second-order lamina monopolar cells (LMCs). In the cartridge, PRs of distinct spectral sensitivities are connected via histamine-gated chloride channels, forming characteristic spectral opponency. Some PRs and LMCs have long side branches penetrating neighboring cartridges, indicating possible spatial interaction. Here we aimed at demonstrating the spatio-spectral opponency in the Papilio lamina by intracellular electrophysiology, anatomy, and modeling. We could record spectral sensitivities of PRs from many (typically 50) different angles and indeed found that off-axis stimulations altered the sensitivity profile, indicating the spatio-spectral opponency. We made a computational model to analyze the responses, which supported our hypothesis of synaptic interaction underlying the complicated opponency. This model will be extended to estimate the function of interommatidial connections that produce spatial opponency in PRs and LMCs.

凤蝶的眼睛由随机分布的三种光谱不同类型的小眼组成。每个小眼含有9个光感受器（PRs）细胞，它们与4个二级板单极细胞（LMCs）形成一个称为盒的模块。在检测盒中，不同光谱灵敏度的PR通过组胺门控氯离子通道连接，形成特征性光谱灵敏度。一些PR和LMCs具有长的侧支，穿透相邻的墨盒，表明可能的空间相互作用。在这里，我们旨在通过细胞内电生理学、解剖学和建模来展示凤蝶叶片中的空间光谱特性。我们可以从许多（通常为50个）不同的角度记录PR的光谱灵敏度，并且确实发现离轴刺激改变了灵敏度曲线，表明了空间-光谱的一致性。我们建立了一个计算模型来分析反应，这支持了我们的假设，突触相互作用背后的复杂的双稳态。这个模型将被扩展到估计的功能interrommatidial连接，产生空间的相干性在PR和LMCs。

项目成果

The costly love spot of the horsefly (Tabanus bromius)

马蝇 (Tabanus bromius) 的昂贵爱情点

• 发表时间: 2019
• 作者: Marko Ilic;Rok Janza;Andrej Meglic;Alec Skorjanc;Gregor Belusic.
• 通讯作者: Gregor Belusic.

Horsefly object-directed polarotaxis is mediated by a stochastically distributed ommatidial subtype in the ventral retina

• DOI: 10.1073/pnas.1910807116
• 发表时间: 2019-10-22
• 期刊: PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
• 影响因子: 11.1
• 作者: Meglic, Andrej;Ilic, Marko;Belusic, Gregor
• 通讯作者: Belusic, Gregor