Light-sensitivity of isolated pigment cells of the sea urchin Centrostephanus longispinus
@article{Weber2004LightsensitivityOI,
title={Light-sensitivity of isolated pigment cells of the sea urchin Centrostephanus longispinus},
author={Walter Weber and Martin Dambach},
journal={Cell and Tissue Research},
year={2004},
volume={148},
pages={437-440}
}SummaryPigment cells isolated from the epithelium of the sea urchin Centrostephanus longispinus display light-sensitivity in the same manner as in normal tissue. In complete darkness they have a round to ovoid shape. On illumination a successive extension of pigment-bearing processes can be observed. Darkness leads to a successive retraction of the pseudopodia.
12 Citations
Light-induced alterations in cell shape and pigment displacement in chromatophores of the sea urchin Centrostephanus longispinus
- BiologyCell and Tissue Research
- 2004
Alterations in cell shape of the light-sensitive chromatophores of Centrostephanus longispinus are described and the motion of single granules shows characteristic features of a saltatory movement.
Ultrastructural observations on changes in cell shape in chromatophores of the sea urchin Centrostephanus longispinus
- BiologyCell and Tissue Research
- 2004
Alterations in cell shape of the light-sensitive chromatophores of the sea urchin Centrostephanus longispinus were studied by scanning- and transmission electron microscopy and the possible functional significance is briefly discussed.
Ultrastructure of the basiepithelial nerve plexus of the sea urchin, Centrostephanus longispinus
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The basiepithelial nerve plexus of the Echinoid, Centrostephanus longispinus, contains strands of nerve fibres, which measure between 0.1 and 2.0 μm in diameter, and by means of serial sectioning the structure of multipolar cell bodies within the plexi could be demonstrated.
Spectral Sensitivity of Melanophores in the Primary Color Response of the Rose Bitterling, Rhodeus ocellatus ocellatus
- Environmental ScienceIchthyological Research
- 2017
The effective wavelength within visible light region for inducing melanosome dispersion was investigated using melanophores located around the base of the dorsal fin of young fish set on the stage of a light microscope.
Characterization Of Pigment Cell Specific Genes In The Sea Urchin Embryo (strongylocentrotus Purpuratus)
- Biology
- 2007
The goal of this research was to characterize a subset of genes in the sea urchin embryo that are highly similar to: the polyketide synthase gene (Pks), a sulfotransfer enzyme gene (Sult), three different members of the flavin-containing monooxygenase gene family (Fmo), and the transcription factor glial cells missing (Gcm).
Fine structure of the dorsal arm plate of Ophiocoma wendti: Evidence for a photoreceptor system (Echinodermata, Ophiuroidea)
- BiologyZoomorphology
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Three structures in the dermis of the dorsal arm plate (DAP) of the brittlestar, Ophiocoma wendti, appear to comprise a photoreceptor system, and the transparent stereom may play a role in photoreception, in addition to its generally recognized skeletal function.
Behavioural response of different epithelial tissues of sea cucumber (Apostichopus japonicus) to light and differential expression of the light-related gene Pax6
- Biology
- 2020
The behavioural results indicated that the tentacles, tube feet, and spines were sensitive to light with structural changes, and among the three epithelial tissues, the tentacles were the most sensitive with the shortest reaction and recovery times, whereas the tube feet and sp spine had longer reaction times.
Isolation of pigment cell specific genes in the sea urchin embryo by differential macroarray screening
- BiologyDevelopment
- 2003
The results suggest that S. purpuratus pks, fmo and sult could belong to a differentiation gene battery of pigment cells, which is necessary for the biosynthesis of the sea urchin pigment echinochrome.
Rediscovery of the poorly known sea urchin Centrostephanus longispinus rubicingulus (H.L. Clark, 1921) (Echinodermata, Echinoidea, Diadematidae) on the continental shelf of Brazil, with notes on its morphology and synonymy
- BiologyMarine Biology Research
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This is the first record of this sea urchin Centrostephanus longispinus rubicingulus for northeastern Brazil and raises the number of echinoids known from Northeastern Brazil to 32 species.
Analysis of a Developmental Gene Regulatory Network in the Sea Urchin Embryo During Normal and Regulative Development
- Biology
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5 List of Figures 7 Chapter
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