Results 71 to 80 of about 4,950 (170)

Welfare and Physiological Consequences of Non‐Lethal Blood Sampling From the Caudal Vasculature of Atlantic Salmon (Salmo salar L.)

open access: yesJournal of Fish Diseases, Volume 49, Issue 7, July 2026.
ABSTRACT The objective of this study was to evaluate welfare and health effects following single and repeated non‐lethal blood sampling from the caudal vasculature of Atlantic salmon. Two experiments were conducted at three different temperatures: a 6‐week freshwater experiment with fish weighing 50–100 g, undergoing up to four blood withdrawals, and a
Harriet Romstad   +9 more
wiley   +1 more source

melanophores

open access: yes, 2001
1 Melatonin (5-methoxy N-acetyltryptamine) and serotonin (5-HT) exert rapid, but opposite effects on pigment granule distribution in Xenopus laevis melanophores.
Muy‐Teck Teh   +3 more
core   +1 more source

Volumetric tracking of migratory melanophores during zebrafish development by optoacoustic microscopy.

open access: yes, 2015
Unveiling mechanisms driving specification, recruitment and regeneration of melanophores is key in understanding melanin-related disorders. This study reports on the applicability of a hybrid focus optoacoustic microscope (HFOAM) for volumetric tracking ...
Kneipp, Moritz;Estrada, Héctor;Lauri, Antonella;Turner, Jake;Ntziachristos, Vasilis;Westmeyer, Gil G;Razansky, Daniel
core   +2 more sources

Gap junctions composed of connexins 41.8 and 39.4 are essential for colour pattern formation in zebrafish

open access: yeseLife, 2014
Interactions between all three pigment cell types are required to form the stripe pattern of adult zebrafish (Danio rerio), but their molecular nature is poorly understood.
Uwe Irion   +7 more
doaj   +1 more source

A new species of Hemibrycon (Characiformes, Characidae) from the upper San Juan River drainage, Pacific versant, Colombia

open access: yesZooKeys, 2014
Hemibrycon sanjuanensis, new species, is described from the upper San Juan River drainage, Pacific versant, Colombia. It is distinguished from H. boquiae, H. brevispini, H. cairoense, H. colombianus, H. mikrostiktos, H. metae, H. palomae, H.
Cèsar Román-Valencia   +3 more
doaj   +1 more source

Early and Larval Development of the Marine Species Grey Triggerfish (Balistes capriscus, Gmelin, 1789) and the Use of Different Organisms as First Food Sources

open access: yesAquaculture, Fish and Fisheries, Volume 6, Issue 3, June 2026.
ABSTRACT The aim of this study was to provide an initial description of the embryology and larval development of Balistes capriscus species obtained from natural spawning in captivity. The study also aimed to assess the stocking density and the impact of offering four types of live food as the initial feed during the larviculture phase. Observations of
Henrique David Lavander   +9 more
wiley   +1 more source

Effects of ultraviolet-C radiation on isolated fish scale melanophores

open access: yes, 2004
58-60The effects of ultraviolet-C radiation on isolated fish scale melanophores are studied. The responses of melanophores were measured by mean melanophores size index (MMSI).
Jain, Ravi   +3 more
core  

Homotypic cell competition regulates proliferation and tiling of zebrafish pigment cells during colour pattern formation

open access: yesNature Communications, 2016
Melanophores, iridophores and xanthophores are pigment-cell types that interact to form the stripes in zebrafish. Here, the authors study the interaction between cells of the same kind and show that each pigment-cell type covers the skin by contact based
Brigitte Walderich   +3 more
doaj   +1 more source

Zebrafish Melanophores Suggest Novel Functions of Cell Chirality in Tissue Formation

open access: yes, 2021
Several types of cells show left–right asymmetric behavior, unidirectional rotation, or spiral movements. For example, neutrophil-like differentiated HL60 (dHL60) cells show leftward bias in response to chemoattractant.
Shigeru Kondo, Hiroaki Yamanaka
core   +1 more source

Acoustic detection of melanosome transport in Xenopus laevis melanophores

open access: yes, 2013
Organelle transport studies are often performed using melanophores from lower vertebrates due to the ease of inducing movements of pigment granules (melanosomes) and visualizing them by optical microscopy.
Wallin, Margareta,   +14 more
core   +1 more source

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