Results 1 to 10 of about 475 (138)

Colour Confusion: Reviewing Ambiguities in the Identification and Classification of Chromatophore Deficiencies Among Amphibians [PDF]

Ecology and Evolution
The 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   +3 more sources

Larval Pigmentation Reveals Environmental and Genetic Influences in Hybridizing Ambystoma Salamanders [PDF]

Ecology 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, Victor Fitzgerald, Patrick Altomari, Jason T. Bracken, Tereza Jezkova   +4 more
doaj   +3 more sources

A Simple Method for RNA-Seq of Manually Isolated Chromatophores in Oryzias Fishes. [PDF]

Dev Growth Differ
ABSTRACT RNA sequencing (RNA‐seq) has become an essential tool for analyzing gene expression and exploring cell type–specific transcriptomes. However, sample preparation and quality control remain challenging, as current approaches typically rely on dissecting tissues containing mixed cell populations or using flow cytometry to isolate fluorescently ...
Goda M, Miyagi A, Sugiwaka K, Watanabe M, Bessho-Uehara M, Hibi M, Toyoda A, Tanaka R, Masengi KWA, Yamahira K, Ansai S, Hashimoto H.   +11 more
europepmc   +2 more sources

Pigments, Chromatophore Structure, and Gene Expression Underlying Colour Polytypy of a Panamanian Poison Frog. [PDF]

Mol Ecol
ABSTRACT Colour polytypism represents an example of phenotypic diversification shaped by genetic divergence and ecological pressures. Poison frogs of the genus Oophaga (Dendrobatidae) are highly polytypic in coloration, making them an ideal system for investigating the genetic and physiological basis of colour variation.
Mantzana-Oikonomaki V, Tamayo-Castillo G, Vásquez-Cháves V, Mora-Machado A, Zamora Ramirez WJ, Ibáñez R, Pröhl H, Rodríguez A.   +7 more
europepmc   +2 more sources

Dominant Negative Mitf Allele Impacts Melanophore and Xanthophore Development and Reveals Collaborative Interactions With Tfec in Zebrafish Chromatophore Lineages. [PDF]

Pigment Cell Melanoma Res
ABSTRACT Ectothermic vertebrates exhibit a diverse array of pigment cell types—chromatophores—that provide valuable opportunities to uncover mechanisms of fate specification and how they evolve. Like melanocytes of mammals, the melanophores of teleosts and other ectotherms depend on basic helix–loop–helix leucine zipper transcription factors encoded by
Korzeniwsky KG, de Mello PLH, Liang Y, Feltes M, Farber SA, Parichy DM.   +5 more
europepmc   +2 more sources

A Chromosome Inversion Creates a Supergene for Sex and Colour in Lake Malawi Cichlids. [PDF]

Mol Ecol
ABSTRACT Cichlid fishes have the highest rates of evolutionary turnover of sex chromosomes among vertebrates. Many large structural polymorphisms in the radiation of cichlids in Lake Malawi are associated with sex chromosomes and may also carry adaptive variation.
Behrens KA, Jailwala S, Clark FE, Meyer AC, Kumar NM, Konings AF, Roberts RB, Conte MA, Streelman JT, McGrath PT, Kocher TD.   +10 more
europepmc   +2 more sources

Disruption of mc1r Disturbs Skin Pigmentation in Xenopus tropicalis. [PDF]

Pigment Cell Melanoma Res
ABSTRACT The melanocortin 1 receptor (MC1R) is well‐established as a pivotal regulator of pigmentation in various species. Despite a wealth of research focused on mammals and fish, the role of Mc1r in amphibians has remained largely unexplored. This study was designed to elucidate the contribution of Mc1r in Xenopus tropicalis.
Li L, Huang J, Chen Y, Ran R.
europepmc   +2 more sources

Xanthophore Distribution of Nemo (Amphiprion ocellaris) Skin Based on various Concentrations of Carotenoid Sources

Jurnal Ilmiah Perikanan dan Kelautan, 2023
The decreased color intensity of  Nemo is related to the amount of carotenoid concentration in the xanthophore of Nemo's skin. Therefore, efforts are needed to maintain stable carotenoid production. Tomato is one of the most abundant carotenoid producers.
Rini Pratiwi, Muhammad Yusri Karim, Dody Dh Trijuno   +2 more
doaj   +1 more source

Pigment pattern morphospace of Danio fishes: evolutionary diversification and mutational effects

Biology Open, 2021
Molecular and cellular mechanisms underlying variation in adult form remain largely unknown. Adult pigment patterns of fishes in the genus Danio, which includes zebrafish, Danio rerio, consist of horizontal stripes, vertical bars, spots and uniform ...
Braedan M. McCluskey, Yipeng Liang, Victor M. Lewis, Larissa B. Patterson, David M. Parichy   +4 more
doaj   +1 more source

Distinct interactions of Sox5 and Sox10 in fate specification of pigment cells in medaka and zebrafish. [PDF]

PLoS Genetics, 2018
Mechanisms generating diverse cell types from multipotent progenitors are fundamental for normal development. Pigment cells are derived from multipotent neural crest cells and their diversity in teleosts provides an excellent model for studying ...
Yusuke Nagao, Hiroyuki Takada, Motohiro Miyadai, Tomoko Adachi, Ryoko Seki, Yasuhiro Kamei, Ikuyo Hara, Yoshihito Taniguchi, Kiyoshi Naruse, Masahiko Hibi, Robert N Kelsh, Hisashi Hashimoto   +11 more
doaj   +1 more source