Results 121 to 130 of about 475 (138)
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Microscopy Research and Technique, 2002
AbstractPigmentary organelle translocations within fish chromatophores undergo physiological color changes when exposed to external signals. Chromatophores can be isolated in high yields, and their pigmentary organelles can be tracked readily by microscopy.
Victoria A, Kimler, John D, Taylor
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AbstractPigmentary organelle translocations within fish chromatophores undergo physiological color changes when exposed to external signals. Chromatophores can be isolated in high yields, and their pigmentary organelles can be tracked readily by microscopy.
Victoria A, Kimler, John D, Taylor
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Induction of xanthophores from non-pigmented dermal cells of xanthic goldfish in vitro
Cell Differentiation, 1987To identify precursor cells of xanthophores (xanthoblasts), non-pigmented cells without any phenotypic traits as pigment cells were isolated from the dermal tissue of xanthic goldfish with an adult color pattern and cultured in a medium containing 1 mM db-cAMP or 0.25 U/ml ACTH and 10% carp serum.
Y, Wakamatsu, M, Obika, K, Ozato
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Pigment Cell Research, 1995
By whole‐cell transmission electron microscopy (WCTEM), we recently demonstrated that carotenoid droplets are transported by elongating or retracting endoplasmic reticular cisternae in goldfish xanthophores. Here we report that permeabilized xanthophores demonstrate immunogold reactivity against several proteins involved in organelle translocation. The
V A, Kimler, J D, Taylor
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By whole‐cell transmission electron microscopy (WCTEM), we recently demonstrated that carotenoid droplets are transported by elongating or retracting endoplasmic reticular cisternae in goldfish xanthophores. Here we report that permeabilized xanthophores demonstrate immunogold reactivity against several proteins involved in organelle translocation. The
V A, Kimler, J D, Taylor
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Wilhelm Roux's Archives of Developmental Biology, 1982
The subepidermal distribution of xanthophores and melanophores is investigated in embryos ofTriturus alpestris with a uniform (stage 28+) and a banded melanophore pattern (stage 35/36). In ultrathin head and trunk sections from stage 35/36 embryos which externally show longitudinal dorsal and lateral melanophore bands in the trunk and less compact ...
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The subepidermal distribution of xanthophores and melanophores is investigated in embryos ofTriturus alpestris with a uniform (stage 28+) and a banded melanophore pattern (stage 35/36). In ultrathin head and trunk sections from stage 35/36 embryos which externally show longitudinal dorsal and lateral melanophore bands in the trunk and less compact ...
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Carotenoids, instead of pteridines, determine color of xanthophores and erythrophores in tilapia
Journal of HeredityAbstract There has been controversy over whether the chromogenic substances of xanthophores and erythrophores are pteridines or carotenoids in fish. In this study, we first extracted and quantified carotenoids and pteridines from erythrophores and xanthophores in tilapia, respectively.
Guangyuan Liang +9 more
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Iridophore- and Xanthophore-Deficient Melanistic Color Variant of the LizardPlestiodon latiscutatus
Herpetologica, 2016Abstract: Elucidating the ultimate and proximate mechanisms of melanistic color pattern formation has become an important focus of evolutionary biology. There are relatively few studies, however, examining the composition and architecture of pigment cells in melanistic reptiles.
Takeo Kuriyama +3 more
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Effect of methionine-enkephalin on xanthophore aggregation
Peptides, 1980The intracranial injection of an opioid antagonist (naloxone) caused aggregation of xanthophores in goldfish scales. This aggregating effect produced by naloxone was inhibited by an injection of methionine-enkephalin (M-ENK). M-ENK, when injected together with melatonin which normally produces aggregation of xanthophores, interfered with the effect of ...
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Pigment Cell & Melanoma Research, 2019
AbstractAlthough xanthophores are found widely among poikilothermic species, the developmental and biochemical pathways underlying differentiation of these pteridine‐ and carotenoid‐containing cells remain murky. I have identified a recessive zebrafish mutant, camembert (cmm), which displays defective xanthophore pigmentation during embryonic and ...
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AbstractAlthough xanthophores are found widely among poikilothermic species, the developmental and biochemical pathways underlying differentiation of these pteridine‐ and carotenoid‐containing cells remain murky. I have identified a recessive zebrafish mutant, camembert (cmm), which displays defective xanthophore pigmentation during embryonic and ...
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Pigment Cell & Melanoma Research
ABSTRACTReptiles showcase an extensive array of skin colours and patterns, yet little is known about the genetics of reptile colouration. Here, we investigate the genetic basis of the Clown colour morph found in captive‐bred ball pythons (Python regius) to study skin pigmentation and patterning in snakes.
Alan Garcia‐Elfring +6 more
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ABSTRACTReptiles showcase an extensive array of skin colours and patterns, yet little is known about the genetics of reptile colouration. Here, we investigate the genetic basis of the Clown colour morph found in captive‐bred ball pythons (Python regius) to study skin pigmentation and patterning in snakes.
Alan Garcia‐Elfring +6 more
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The role of xanthophores in the stripe pattern formation of Zebrafish, Danio rerio
2017Animals have evolved a fascinating diversity in their color patterns, which serves as an essential component of their survival strategies. Color pattern formation in zebrafish (Danio rerio) is a great model system to study general pattern formation involving different cell types.
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