Results 21 to 30 of about 620 (143)

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

open access: yesMol 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   +7 more
europepmc   +2 more sources

Zebrafish Embryos to Profile Nano(bio)materials: A Modular Platform for Developmental Toxicity, Neurotoxicity, and Inflammation-Regeneration Assays. [PDF]

open access: yesCurr Protoc
Abstract Zebrafish embryos provide a rapid, low‐cost in vivo platform to profile the developmental, neurotoxic, and immunomodulatory effects of engineered nano(bio)materials within a single vertebrate system. This article presents a modular workflow that integrates standardized fish embryo acute toxicity (FET) testing, chemically assisted ...
Bragato C   +8 more
europepmc   +2 more sources

Evolution of Endothelin signaling and diversification of adult pigment pattern in Danio fishes. [PDF]

open access: yesPLoS Genetics, 2018
Fishes of the genus Danio exhibit diverse pigment patterns that serve as useful models for understanding the genes and cell behaviors underlying the evolution of adult form. Among these species, zebrafish D.
Jessica E Spiewak   +10 more
doaj   +1 more source

Anterior-posterior gene expression differences in three Lake Malawi cichlid fishes with variation in body stripe orientation [PDF]

open access: yesPeerJ, 2017
Morphological differentiation among closely related species provides opportunities to study mechanisms shaping natural phenotypic variation. Here, we address variation in the orientation of melanin-colored body stripes in three cichlid species of the ...
Ehsan Pashay Ahi, Kristina M. Sefc
doaj   +2 more sources

Tight Junction Protein 1a regulates pigment cell organisation during zebrafish colour patterning

open access: yeseLife, 2015
Zebrafish display a prominent pattern of alternating dark and light stripes generated by the precise positioning of pigment cells in the skin. This arrangement is the result of coordinated cell movements, cell shape changes, and the organisation of ...
Andrey Fadeev   +4 more
doaj   +1 more source

Flashing spots on the dorsal trunk of hardyhead silverside fish

open access: yesRoyal Society Open Science, 2021
A large number of living creatures are able to use ambient light effectively in biological signalling. Atherinomorus lacunosus, a teleost fish has alignments of circular spots on its dorsal trunk.
Masakazu Iwasaka
doaj   +1 more source

Leukocyte tyrosine kinase functions in pigment cell development.

open access: yesPLoS Genetics, 2008
A fundamental problem in developmental biology concerns how multipotent precursors choose specific fates. Neural crest cells (NCCs) are multipotent, yet the mechanisms driving specific fate choices remain incompletely understood.
Susana S Lopes   +13 more
doaj   +1 more source

Iridophores and their interactions with other chromatophores are required for stripe formation in zebrafish [PDF]

open access: yesDevelopment, 2013
Colour patterns of adult fish are produced by several types of pigment cells that distribute in the dermis during juvenile development. The zebrafish, Danio rerio, displays a striking pattern of dark stripes of melanophores interspersed by light stripes of xanthophores.
Frohnhöfer, Hans Georg   +3 more
openaire   +4 more sources

ULTRASTRUCTURE OF A CEPHALOPOD PHOTOPHORE. II. IRIDOPHORES AS REFLECTORS AND TRANSMITTERS

open access: yesThe Biological Bulletin, 1974
The iridophores of one type of photophore of the deep sea squid, Pterygioteuthis microlampas were examined with the electron microscope and four different types were found. Three of these types have not been previously described. The regular iridophores of the posterior cup appear to be one-fourth wave length reflectors and redirect the light produced ...
Arnold, John M.   +2 more
openaire   +4 more sources

A gene expression study of dorso-ventrally restricted pigment pattern in adult fins of Neolamprologus meeli, an African cichlid species [PDF]

open access: yesPeerJ, 2017
Fish color patterns are among the most diverse phenotypic traits found in the animal kingdom. Understanding the molecular and cellular mechanisms that control in chromatophore distribution and pigmentation underlying this diversity is a major goal in ...
Ehsan Pashay Ahi, Kristina M. Sefc
doaj   +2 more sources

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