CHROMATOPHORE ORGANS, REFLECTOR CELLS, IRIDOCYTES AND LEUCOPHORES IN CEPHALOPODS
CHROMATOPHORE ORGANS, REFLECTOR CELLS, IRIDOCYTES AND LEUCOPHORES IN CEPHALOPODS
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DOI：
10.1093/icb/23.3.581
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发表时间：
1983-01-01
期刊：
影响因子：
--
通讯作者：
BROCCO, SL
中科院分区：
文献类型：
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作者：
CLONEY, RA;BROCCO, SL
Lohgo的着色器由五种类型的细胞组成：中央色素细胞：放射状排列的斜纹肌纤维：神经元突起；神经胶质细胞：和鞘细胞的包被。八色细胞器中没有鞘细胞。生色团器官的扩张和收缩的周期可能发生在一秒的量级内。很明显，肌肉纤维扩张了色素细胞，展开了色素颗粒。这种色素包含在一个不寻常的丝状细胞质隔室中，称为细胞弹性球囊。这个隔室具有弹性性质。反射器细胞和虹膜细胞产生结构颜色，即使它们的成分是无色的。章鱼的反射器细胞周围有一组叶状的反射片层，称为反射体：这些反射体含有高折射率(1.42)的蛋白质血小板。在每个反射体中，反射片层由大约等于片层厚度的间隙隔开，但具有较低的折射率(1.33)。反射小体被认为是反射光并起到薄膜干扰装置的作用。鱿鱼和墨鱼中的虹膜细胞含有虹膜小体，这些虹膜小体也是由一组带状的血小板组成，但这些虹膜小体位于细胞体的中央。血小板通常相对于皮肤表面呈边缘取向。讨论了真皮虹膜细胞作为衍射栅的可能性。白细胞团有数以千计的过程，其中含有高折射率的蛋白质球体。这些细胞散射所有波长的光，在白光下呈现白色。
The chromatophore organs ofLohgoare each composed of five types of cells: a central pigment cell: radially arranged, obliquely striated muscle fibers: neuronal processes; glial cells: and an investment of sheath cells. Sheath cells are absent inOctopuschromatophore organs. The cycle of expansion and retraction of a chromatophore organ may occur within the order of a second. It is clear that the muscle fibers expand the pigment cell and spread out the pigment granules. The pigment is contained within an unusual, filamentous, cytoplasmic compartment called the cytoelastic sacculus. This compartment has elastic properties.Reflector cells and iridocytes produce structural colors even though their components are colorless. Reflector cells inOctopusbear peripheral sets of leaf-like reflecting lamellae called reflectosomes: these contain proteinaceous platelets with a high refractive index (1.42). In each reflectosome the reflecting lamellae are separated by gaps that are about equal to the thickness of the lamellae, but have a lower refractive index (1.33). Reflectosomes are believed to reflect light and to function as thin-film interference devices.Iridocytes in squid and cuttlefish contain iridosomes that are also composed of sets of ribbon-like platelets but these are located centrally within the cell body. The platelets are usually oriented on edge with respect to the surface of the skin. The possibility that dermal iridocytes may act as diffraction gratings is discussed. Leucophores have thousands of processes that contain globules of protein with a high refractive index. These cells scatter light of all wave lengths and appear white in white light.