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首页> 外文期刊>Cell and Tissue Research >Immunohistochemical evidence for multiple photosystems in box jellyfish
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Immunohistochemical evidence for multiple photosystems in box jellyfish

机译：盒状水母中多种光系统的免疫组织化学证据

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摘要

Cubomedusae (box jellyfish) possess a remarkable visual system with 24 eyes distributed in four sensory structures termed rhopalia. Each rhopalium is equipped with six eyes: two pairs of pigment cup eyes and two unpaired lens eyes. Each eye type probably captures specific features of the visual environment. To investigate whether multiple types of photoreceptor cells are present in the rhopalium, and whether the different eye types possess different types of photoreceptors, we have used immunohistochemistry with a range of vertebrate opsin antibodies to label the photoreceptors, and electroretinograms (ERG) to determine their spectral sensitivity. All photoreceptor cells of the two lens eyes of the box jellyfish Tripedalia cystophora and Carybdea marsupialis displayed immunoreactivity for an antibody directed against the zebrafish ultraviolet (UV) opsin, but not against any of eight other rhodopsin or cone opsin antibodies tested. In neither of the two species were the pigment cup eyes immunoreactive for any of the opsin antibodies. ERG analysis of the Carybdea lower lens eyes demonstrated a single spectral sensitivity maximum at 485 nm suggesting the presence of a single opsin type. Our data demonstrate that the lens eyes of box jellyfish utilize a single opsin and are thus color-blind, and that there is probably a different photopigment in the pigment cup eyes. The results support our hypothesis that the lens eyes and the pigment cup eyes of box jellyfish are involved in different and specific visual tasks.
机译：盒形水母（Cubomedusae）具有非凡的视觉系统，其24只眼分布在四个称为“横纹”的感觉结构中。每个纹状体均配备六只眼：两对色素杯眼和两副不成对的晶状体眼。每种眼睛都可能捕获视觉环境的特定特征。为了研究在纹状体中是否存在多种类型的感光细胞，以及不同眼型是否具有不同类型的感光细胞，我们使用了免疫组织化学与一系列脊椎动物视蛋白抗体进行标记，并通过视网膜电图（ERG）来确定它们的感光细胞。光谱灵敏度。盒状水母Tripedalia cystophora和Carybdea marsupialis的两只晶状体眼的所有感光细胞均显示出针对针对斑马鱼紫外线（UV）视蛋白的抗体的免疫反应性，但对所测试的其他八种视紫红质或视锥蛋白的抗体均无免疫反应。在这两种物种中，色素杯眼对任何视蛋白抗体均没有免疫反应性。 Carybdea下镜眼的ERG分析显示，在485 nm处有一个最大光谱灵敏度，表明存在单一视蛋白类型。我们的数据表明，箱形水母的晶状体眼使用单一视蛋白，因此是色盲的，色素杯眼中可能存在不同的色素沉着。结果支持了我们的假设，即盒状水母的晶状体眼和色素杯眼涉及不同且特定的视觉任务。

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  • 来源
    《Cell and Tissue Research》 |2008年第1期|115-124|共10页
  • 作者

    Peter Ekström; Anders Garm; Jonas Pålsson; Thomas S. Vihtelic; Dan-Eric Nilsson;

  • 作者单位

    Department of Cell and Organism Biology Zoology Building Lund University Helgonavägen 3 S-223 62 Lund Sweden;

    Department of Cell and Organism Biology Zoology Building Lund University Helgonavägen 3 S-223 62 Lund Sweden;

    Department of Cell and Organism Biology Zoology Building Lund University Helgonavägen 3 S-223 62 Lund Sweden;

    Department of Biological Sciences and Center for Zebrafish Research University of Notre Dame Notre Dame IN 46556 USA;

    Department of Cell and Organism Biology Zoology Building Lund University Helgonavägen 3 S-223 62 Lund Sweden;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    Vision; Eyes; Opsin; Tripedalia cystophora; Carybdea marsupialis; (Cnidaria, Cubozoa);

    机译：Vision;Eyes;Opsin;Tripedalia cystophora;Carybdea marsupialis;（Cnidaria;Cubozoa）;

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