Results 61 to 70 of about 4,950 (170)

Morphological differences in the skin of marble trout <i>Salmo marmoratus</i> and of brown trout <i>Salmo trutta</i>

open access: yesFolia Histochemica et Cytobiologica, 2012
Despite being genetically very closely related, the marble trout <em>Salmo marmoratus</em> and the brown trout <em>Salmo trutta</em> exhibit marked phenotypic differences, particularly with regard to skin pigmentation ...
Urška Sivka   +2 more
doaj   +1 more source

Description of the Early Development of Hoplias intermedius (Günther, 1864) (Characiformes: Erythrinidae)

open access: yesJournal of Morphology, Volume 287, Issue 7, July 2026.
This study provides the first description of the early development of Hoplias intermedius (Characiformes: Erythrinidae), from the embryonic to the juvenile stage. The morphological, meristic, and morphometric characterization contributes to understanding the ontogeny and developmental transitions of Neotropical fishes, supporting taxonomy, conservation,
Mateus Babichi Veiga de Souza   +2 more
wiley   +1 more source

Melanophores: a model system for neuronal transport and exocytosis?

open access: yes, 2007
Black pigment cells, melanophores, from lower vertebrates are specialized in bidirectional and coordinated translocation of pigment granules, melanosomes, in the cytoplasm.
Wallin, Margareta,   +2 more
core   +1 more source

Interspecific hybridization in seahorses: artificially produced hybrid offspring of Hippocampus kuda and Hippocampus reidi

open access: yesFisheries and Aquatic Sciences, 2018
Interspecific hybridization experiments were conducted between the common seahorse Hippocampus kuda (male) and the slender seahorse H. reidi (female) during artificial rearing to develop a new aquarium fish with unique polyandrous mating.
Sang-Yun Han   +3 more
doaj   +1 more source

Shifty Frogs: Evidence of Iridescence Among Amphibians

open access: yesAustral Ecology, Volume 51, Issue 7, July 2026.
ABSTRACT Iridescence is a striking optical phenomenon observed in some animals whereby colour or reflectivity changes based on viewing angle, such that two observers in different locations may simultaneously perceive the same tissue differently. Among amphibians, there is limited photographic evidence of tissues displaying colour shifts that define ...
John Gould
wiley   +1 more source

Visual input regulates melanophore differentiation

open access: yesFrontiers in Cell and Developmental Biology
IntroductionDevelopmental processes continue in organisms in which sensory systems have reached functional maturity, however, little research has focused on the influence of sensory input on cell and tissue development. Here, we explored the influence of
Karen Atkinson-Leadbeater   +2 more
doaj   +1 more source

A new catfish species of Microcambeva Costa & Bockmann, 1994 (Siluriformes: Trichomycteridae) from southern Brazil, with a redescription of M. ribeirae Costa, Lima & Bizerril, 2004

open access: yesJournal of Fish Biology, Volume 109, Issue 1, Page 146-164, July 2026.
Abstract Among the few species of Microcambeva reported as occurring in more than one hydrographic basin, M. ribeirae has been previously listed from both the Ribeira de Iguape and the Guaraqueçaba basins. However, morphological and molecular analyses revealed that the specimens from Guaraqueçaba represent a new species, which is described in this ...
Lucas S. de Medeiros   +6 more
wiley   +1 more source

Circadian rhythm of pigment migration induced by chromatrophorotropins in melanophores of the crab chasmagnathus granulata [PDF]

open access: yes, 2004
The circadian rhythm of black pigment migration of melanophores of the crab Chasmagnathus granulata and the variation in responsiveness of these cells to pigment-dispersing hormone (h-PDH), crustacean cardioactive peptide (CCAP), and red ...
Vargas, Marcelo Alves   +5 more
core   +1 more source

Long-distance communication by specialized cellular projections during pigment pattern development and evolution

open access: yeseLife, 2015
Changes in gene activity are essential for evolutionary diversification. Yet, elucidating the cellular behaviors that underlie modifications to adult form remains a profound challenge. We use neural crest-derived adult pigmentation of zebrafish and pearl
Dae Seok Eom   +4 more
doaj   +1 more source

Melanophores on the dorsal head of a larval zebrafish.

open access: yes, 2014
A) before treatement with epinephrine. B) post treatment. The same fish is shown in A and B. B) shows the region in which melanophores were counted. Scale bars are 200 µm.
Sara C. Edsall (525254)   +1 more
core   +1 more source

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