Chromatophore Organs, Reflector Cells, Iridocytes and Leucophores in Cephalopods

@article{Cloney1983ChromatophoreOR,
  title={Chromatophore Organs, Reflector Cells, Iridocytes and Leucophores in Cephalopods},
  author={Richard A. Cloney and Steven L. Brocco},
  journal={Integrative and Comparative Biology},
  year={1983},
  volume={23},
  pages={581-592}
}
The chromatophore organs of Lohgo are 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 in Octopus chromatophore 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… 
Dynamic pigmentary and structural coloration within cephalopod chromatophore organs
TLDR
Structural coloration facilitated by reflectin in sheath cells is demonstrated and insights into the interplay between structural and pigmentary coloration elements are offered.
Cephalopod chromatophores: neurobiology and natural history
  • J. Messenger
  • Biology
    Biological reviews of the Cambridge Philosophical Society
  • 2001
TLDR
The physiology and pharmacology of the Chromatophore nerves and muscles of loliginid squids are discussed in detail, and attention is drawn to the multiple innervation of dorsal mantle chromatophores, of crucial importance in pattern generation.
Chromatophore radial muscle fibers anchor in flexible squid skin
TLDR
This work investigated the anchoring mechanism of radial muscle fibers that expand pigment cells in the longfin squid, Doryteuthis (Loligo) pealeii, and postulate that these features may be relevant for the development of soft actuation models in materials science.
White reflection from cuttlefish skin leucophores
TLDR
This study reveals complex morphological arrangements that produce white structural coloration for different brightnesses of skin by differentially combining spheres and plates.
Chromatophores and Body Patterning in the Squid Alloteuthis Subulata
TLDR
The chromatophore system of the small loliginid squid Alloteuthis subulata (Mollusca: Cephalopoda) is very simple and the repertoire of body patterns limited, and the dorsal reds are larger than the yellows and bear more radial muscles.
Macroscale and Microscale Structural Characterization of Cephalopod Chromatophores
TLDR
This study examines the chromatophore organs in detail to investigate the global and local structure and characterize mechanical properties of skin from the squid Loligo pealeii and determine their connectivity and functional relationships with surrounding structures.
OPTICAL PROPERTIES OF THE PIGMENTS FROM CEPHALOPOD CHROMATOPHORES: SOLUTION AND PARTICLE DETERMINATION
TLDR
It is hypothesized that the pigments, which are localized within nanostructured granules in the chromatophore, enhance the scattering of light within the dermal tissue, and that these characteristics may contribute to the color richness of cephalopods.
The ultrastructure and innervation of muscles controlling chromatophore expansion in the squid, Loligo vulgaris
TLDR
There is a possibility that more than one neurotransmitter is present in the nerves innervating chromatophores, as Electron-lucent and dense-cored vesicles are present in all synaptic regions, but electron-dense vesicle are only found towards the distal end of the fibre.
An Unexpected Diversity of Photoreceptor Classes in the Longfin Squid, Doryteuthis pealeii
TLDR
The findings indicate that these animals possess an unexpected diversity of extraocular photoreceptors and suggest that extraocularPhotoreception using visual opsins and visual phototransduction machinery is far more widespread throughout cephalopod tissues than previously recognized.
An ultrastructural study of connective tissue in mollusc integument III. Cephalopoda.
TLDR
Cephalopod integument appears to represent a major evolutionary step distinguishing this class of molluscs from bivalves and gastropods and recalls vertebrates.
...
...

References

SHOWING 1-8 OF 8 REFERENCES
ULTRASTRUCTURE OF A CEPHALOPOD PHOTOPHORE. II. IRIDOPHORES AS REFLECTORS AND TRANSMITTERS.
TLDR
It appears that these three types of iridophores reflect, transmit and collimate the light produced in the photophore to match the background illumination hence making an efficient countershading mechanism.
The physics and biology of animal reflectors.
  • M. Land
  • Physics
    Progress in biophysics and molecular biology
  • 1972
Animal biochromes and structural colours
Cytochalasin B, cytokinesis, and the contractile ring.