Results 91 to 100 of about 4,653 (213)

Leucism recording and skin alterations in the Arabian tadpole (Sclerophrys arabica) (Heyden, 1827) in AlUla, Saudi Arabia

open access: yesThe European Zoological Journal
Leucism is a colour aberration that results from a lack of melanin and alteration in the development or distribution of chromophores. The study records for the first time the occurrence of leucistic larvae of Arabian toad (Sclerophrys arabica) in AlUla ...
R. M. Alansari   +3 more
doaj   +1 more source

The influence of chromatic background on the photosensitivity of tilapia erythrophores

open access: yesBiology Open, 2014
Summary Non-mammalian vertebrates and invertebrates use extraretinal photoreceptors to detect light and perform diverse non-image-forming functions. Compared to well-studied visual systems, the effect of ambient light conditions on photosensory systems ...
Shyh-Chi Chen   +3 more
doaj   +1 more source

Fish chromatophores—from molecular motors to animal behavior

open access: yes, 2016
Chromatophores are pigment-bearing cells of lower vertebrates, including fish that cater for the ability of individual animals to shift body coloration and pattern. Color change provides dynamic camouflage and various kinds of communication. It is also a
Sara Aspengren   +10 more
core   +1 more source

Oxidoreductase activity of chromatophores and purified cytochrome bc1 complex from Rhodobacter sphaeroides: a possible role of cardiolipin

open access: yes, 2012
Osmotic shock was used as a tool to obtain cardiolipin (CL) enriched chromatophores of Rhodobacter sphaeroides. After incubation of cells in iso- and hyper-osmotic buffers both chromatophores with a physiological lipid profile (Control) and with an ...
GIOTTA, Livia   +6 more
core   +2 more sources

Dynamic pigmentary and structural coloration within cephalopod chromatophore organs

open access: yesNature Communications, 2019
Chromatophores in cephalopod skin are known for fast changes in coloration due to light-scattering pigment granules. Here, authors demonstrate structural coloration facilitated by reflectin in sheath cells and offer insights into the interplay between ...
Thomas L. Williams   +16 more
doaj   +1 more source

Color Changes Induced by Pigment Granule Aggregation in Chromatophores: A Quantitative Model Based on Beer\u27s Law

open access: yes, 1997
A model is presented that quantitatively relates changes in the Beer\u27s Law absorbance of light-absorbing chromatophores (melanophores, erythrophores and xanthophores) of cephalopods to changes in the extent of pigment granule aggregation in these ...
Mark B. Masthay, Masthay, Mark
core   +1 more source

Larval Pigmentation Reveals Environmental and Genetic Influences in Hybridizing Ambystoma Salamanders

open access: yesEcology and Evolution
Closely related species may produce hybrids, and these hybrids often display intermediate traits that can influence fitness and reproductive isolation. In this study, we examine Ambystoma barbouri and Ambystoma texanum, two sister salamander species that
Alfredo Ascanio   +4 more
doaj   +1 more source

Environmental control of morphological color changes in the Bigfin Reef Squid, Sepioteuthis lessoniana

open access: yesFrontiers in Marine Science
IntroductionPhenotypic plasticity enables organisms to adjust their traits in response to environmental conditions, yet studies of animal coloration, particularly in cephalopods, have largely focused on rapid neural control while overlooking slower ...
Annaliese Chang   +6 more
doaj   +1 more source

Conserved and lineage-specific mechanisms drive chromatophore differentiation in reptiles

open access: yesNature Communications
The mechanisms by which novel differentiation pathways evolve to produce new cell types are still not fully understood. Chromatophores, the pigmented cells in the skin, offer an ideal paradigm because each type independently develops from neural crest ...
Pierre-Yves Helleboid   +1 more
doaj   +1 more source

6-Ketocholestanol is a recoupler for mitochondria, chromatophores and cytochrome oxidase proteoliposomes [PDF]

open access: yes, 1997
The effect of 6-ketocholestanol (kCh) on various natural and reconstituted membrane systems has been studied. 6-ketocholestanol (5α-Cholestan-3β-ol-6-one), a compound increasing the membrane dipole potential, completely prevents or reverses the ...
Mansurova, Svetlana E   +8 more
core   +1 more source

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