A histological analysis of coloration in the Peruvian mimic poison frog (Ranitomeya imitator) [PDF]
PeerJ, 2023 Aposematism continues to be a phenomenon of central interest in evolutionary biology. The life history of the mimic poison frog, Ranitomeya imitator, relies heavily on aposematism.
Mallory de Araujo Miles +3 more
doaj +3 more sources
Body Coloration Characterization and Proteomic Analysis of Diurnal Color Variation in Farmed Larimichthys crocea [PDF]
AnimalsThe large yellow croaker (Larimichthys crocea) is an economically significant aquaculture species in Asia, with skin coloration being a key quality attribute affecting consumer choice and commercial value. This study integrated morphological, biochemical,
Na Lin +6 more
doaj +2 more sources
Loss-of-function mutations in the melanocortin-2-receptor (mc2r) lead to skin hyperpigmentation in teleost fish [PDF]
Scientific ReportsMelanocortins regulate pigmentation via melanocortin receptors (MCRs), which are highly conserved across vertebrates. Unlike other MCRs, the melanocortin 2 receptor (MC2R) is exclusively activated by ACTH; however, its role in pigmentation remains ...
Elisa Barreiro-Docío +9 more
doaj +2 more sources
High-intensity light disrupts intracellular organelle dynamics via microtubule depolymerization [PDF]
Scientific ReportsChromatophores provide an excellent model to study organelle transport as they specialize in the translocation of pigment granules in response to defined environmental signals.
Zihao Zhang +3 more
doaj +2 more sources
Synergistic Regulation of Pigment Cell Precursors’ Differentiation and Migration by ednrb1a and ednrb2 in Nile Tilapia [PDF]
CellsThe evolutionary loss of ednrb2 in specific vertebrate lineages, such as mammals and cypriniform fish, raises fundamental questions about its functional necessity and potential redundancy or synergy with paralogous endothelin receptors in pigment cell ...
Zilong Wen +7 more
doaj +2 more sources
Revealing mitf functions and visualizing allografted tumor metastasis in colorless and immunodeficient Xenopus tropicalis [PDF]
Communications BiologyTransparent immunodeficient animal models not only enhance in vivo imaging investigations of visceral organ development but also facilitate in vivo tracking of transplanted tumor cells.
Rensen Ran +5 more
doaj +2 more sources
Colour Confusion: Reviewing Ambiguities in the Identification and Classification of Chromatophore Deficiencies Among Amphibians [PDF]
Ecology and EvolutionThe colour of amphibian skin and eyes (retina and iris) is the result of light interacting with cells called chromatophores, primarily xanthophores, iridophores and melanophores, that can be found in various combinations.
John Gould
doaj +2 more sources
It's not easy being green: Comparing typical skin colouration among amphibians with colour abnormalities associated with chromatophore deficits [PDF]
Ecology and EvolutionAmphibians can obtain their colour from a combination of several different pigment and light reflecting cell types called chromatophores, with defects in one or several of the cells leading to colour abnormalities. There is a need for better recording of
John Gould, Colin McHenry
doaj +2 more sources
Larval Pigmentation Reveals Environmental and Genetic Influences in Hybridizing Ambystoma Salamanders [PDF]
Ecology and EvolutionClosely 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 +2 more sources
Pterin-Based Red Coloration Predicts the Outcome of Male–Male Competition in Guinan Toad-Headed Lizard [PDF]
AnimalsAnimal coloration offers a unique opportunity to explore the evolutionary mechanisms underlying phenotypic diversity. Conspicuous coloration caused by pigments plays a crucial role in social signaling across multiple species by conveying information ...
Xiao Xiao +8 more
doaj +2 more sources