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Light-sensitive motile iridophores and visual pigments in the neon tetra, Paracheirodon innesi.
Zoological Science, 2006Although motile iridophores in the longitudinal stripes of neon tetra skin are under control of the sympathetic nervous system, they also respond to light directly and show circadian color changes. Using neon tetra skin, we found that the photoresponse of iridophores depends on light intensity, and that light near 500 nm is most effective.
Noriko Oshima
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Effects of ACTH on melanophores and iridophores isolated from bullfrog tadpoles
General and Comparative Endocrinology, 1973Melanophores and iridophores were isolated from bullfrog tadpoles by the methods of trypsin digestion and Ficoll density-gradient centrifugation and cultured in vitro in collagen-coated plastic dishes. Both chromatophores attached to the dish and formed dendritic structures.
Hiroyuki Ide
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Leucophores and iridophores of Fundulus heteroclitus: Biophysical and ultrastructural properties
Journal of Morphology, 1979AbstractClassical light microscopic studies on pigmentation of Fundulus heteroclitus (killifish) indicated that there are three groups of light reflecting cells; one group on the surface of scales reflects white light, while two other deeper groups (the melaniridophores and the stratum argenteum) are iridescent. The results presented here show that: (1)
David G, Menter +3 more
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The Iridophores of the Echinoid Diadema antillarum
Journal of Cell Science, 1961ABSTRACT The blue pattern seen when the skin of Diadema antillarum is viewed by reflected light is due to iridophores. The quality of their blueness varies with the background provided by neighbouring chromatophores. Microdissection reveals that they consist of gelatinous plates contained in a fibrous and cellular capsule.
Norman Millott, Brenda M. Manly
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Ultrastructure of the skin melanophores and iridophores in paddlefish, Polyodon spathula
Micron, 2007The ultrastructure of melanophores and iridophores of Polyodon spathula has been examined by transmission electron microscopy. In the skin, two types of chromatophores, melanophores and iridophores were founded. Melanophores were localized both in epidermis and dermis.
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Benign dermal iridophore aggregates in a crested gecko (Correlophus ciliatus)
Journal of Exotic Pet Medicine, 2020Abstract A 1-year-old, female intact crested gecko was evaluated because of skin discoloration on her ventrum. Full-thickness biopsies were taken and evaluated histologically. Multifocally and regularly, there were collections of birefringent, granular material, localized primarily to the most superficial dermis subjacent to the overlying epithelium,
Tess Rooney +2 more
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Polarization Reflecting Iridophores in the Arms of the SquidLoligo pealeii
The Biological Bulletin, 200185: 1185–1196. 12. Yang, X.-L., L. Ping, T. Lu, Y. Shen, and M.-H. Han. 2001. Prog. Brain Res. 131: 277–293. 13. Schmidt, K.-F. 1999. Neurosci. Lett. 262: 109–112. 14. Shen, Y., and X.-L. Yang. 1999. Neurosci. Lett. 259: 177–180. 15. McMahon, D. G., D.-Q. Shang, L. Ponomareva, and T. Wagner. 2001. Prog. Brain Res. 131: 419–436. 16. Dowling, J.
N, Shashar +5 more
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ACTION SPECTRA FOR THE IRIDOPHORE LIGHT RESPONSE IN THE NEON TETRA
Photochemistry and Photobiology, 1984Abstract The iridophores of some fishes such as the neon tetra (Paracheirodon innesi) are composed of alternating layers of guanine and cytoplasm. In the dark adapted state, the guanine layers are close together and reflect violet light. After illumination these layers separate and the iridophores reflect green light.
J. N. Lythgoe, Julia Shand
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Chemical characterization of reflecting platelets in motile iridophores of blue damselfish
Comparative Biochemistry and Physiology Part B: Comparative Biochemistry, 1989Abstract 1. 1. The chemical nature of the very thin reflecting platelets within the motile iridophores of the blue damselfish, Chrysiptera cyanea , was studied by thin-layer chromatography on crystalline cellulose. 2. 2. The platelets are composed exclusively of guanine, as judged by the limits of sensitivity of this method. 3. 3.
Masahiro Aihara +3 more
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Zebrafish Leucocyte tyrosine kinase controls iridophore establishment, proliferation and survival
Pigment Cell & Melanoma Research, 2016Summary The zebrafish striped pattern results from the interplay among three pigment cell types; black melanophores, yellow xanthophores and silvery iridophores, making it a valuable model to study pattern formation in vivo.
Fadeev, A. +3 more
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