Results 111 to 120 of about 620 (143)

Motile iridophores of a freshwater goby, Odontobutis obscura

Cell and Tissue Research, 1986
Reflecting chromatophores in the dermis of the skin of a freshwater goby, Odontobutis obscura, are of an iridophore type. These chromatophores contain numerous reflecting platelets, which are similar to those in iridophores of other fish and amphibian species.
Tetsuro Iga, Akira Matsuno
openaire   +1 more source

Iridophore development in wild-type and periodic albinoXenopus larvae

Experientia, 1981
Light microscopic studies of iridophore preparations from ap mutantXenopus larvae revealed abnormalities in the morphology and size distribution of reflecting platelets; purine synthesis is normal. A pleiotropic effect of the ap gene on melanoblasts and iridoblasts is proposed.
G J, MacMillan, A M, Gordon
exaly   +3 more sources

Stimulation of Cultured Iridophores by Amphibian Ventral Conditioned Medium

Pigment Cell Research, 1990
That the ventral integument of adult frogs (Rana pipiens) contains factor(s) that stimulate iridophore expression (adhesion, morphologic appearance, proliferation) was demonstrated on iridophores derived from tadpoles of R. pipiens and Pachymedusa dacnicolor, and maintained in primary culture in a growth medium based upon Leibovitz's L‐15. Experimental
J T, Bagnara, T, Fukuzawa
openaire   +2 more sources

Guanine formation in isolated iridophores from bullfrog tadpoles

Biochimica et Biophysica Acta (BBA) - General Subjects, 1972
Iridophores were isolated from the peritoneum of bullfrog tadpoles by the method of trypsin digestion followed by Ficoll density gradient centrifugation. Guanine and hypoxanthine were found in the isolated iridophores. The incorporation of the label of [3H]guanosine into guanine was demonstrated using the isolated iridophores.
H, Ide, T, Hama
openaire   +2 more sources

Guanine and hypoxanthine formation in iridophores of the bullfrog tadpole.

Biochimica et biophysica acta, 1972
Abstract 1. 1. The mechanism of guanine and hypoxanthine formation in iridophores was studied using the ventral skin of bullfrog tadpoles. 2. 2. Incubation mixtures containing skin extract, guanosine or deoxyguanosine and inorganic phosphate yielded guanine, and incubation mixtures containing inosine or adenosine, instead of guanosine or ...
H, Ide, T, Hama
openaire   +3 more sources

The effects of intermedin on the ultrastructure of amphibian iridophores

General and Comparative Endocrinology, 1969
The ultrastructure and pigment composition of untreated and intermedin-treated integumental iridophores of three species of amphibians, Hyla cinerea, H. arenicolor, and Agalychnis dachnicolor, were examined by electron microscopy and by purine analysis.
openaire   +2 more sources

Developmental and comparative transcriptomic identification of iridophore contribution to white barring in clownfish [PDF]

Pigment Cell and Melanoma Research, 2019
AbstractActinopterygian fishes harbor at least eight distinct pigment cell types, leading to a fascinating diversity of colors. Among this diversity, the cellular origin of the white color appears to be linked to several pigment cell types such as iridophores or leucophores.
Pauline Salis, Carine Rey, Anna Marcionetti   +2 more
exaly   +6 more sources

Electrowetting-controlled bio-inspired artificial iridophores

SPIE Proceedings, 2011
Many marine organisms have evolved complex optical mechanisms of dynamic skin color control that allow them to drastically change their visual appearance. In particular, cephalopods have developed especially effective dynamic color control mechanism based on the mechanical actuation of the micro-scale optical structures, which produce either ...
Supone Manakasettharn, J. Ashley Taylor, Tom Krupenkin   +2 more
openaire   +1 more source

Cephalopod coloration model I Squid chromatophores and iridophores

Journal of the Optical Society of America A, 2008
We have developed a mathematical model of skin coloration in cephalopods, a class of aquatic animals. Cephalopods utilize neurological and physiological control of various skin components to achieve active camouflage and communication. Specific physical processes of this coloration are identified and modeled, utilizing available biological materials ...
Richard L, Sutherland, Lydia M, Mäthger, Roger T, Hanlon, Augustine M, Urbas, Morley O, Stone   +4 more
openaire   +2 more sources

Leucophores and iridophores of Fundulus heteroclitus: Biophysical and ultrastructural properties

Journal of Morphology, 1979
AbstractClassical 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, M, Obika, T T, Tchen, John D, Taylor   +3 more
openaire   +2 more sources