Results 61 to 70 of about 2,198 (218)

Photoperiod modulates male sexual maturation in the Emperor tetra (Nematobrycon palmeri), a strictly tropical ornamental fish

open access: yesJournal of the World Aquaculture Society, Volume 57, Issue 3, June 2026.
Abstract Photoperiod manipulation is widely used to regulate reproduction in temperate fish species, but little is known about its effects in strictly tropical species. This study evaluated whether the Emperor tetra (Nematobrycon palmeri), a tropical ornamental fish, can modulate sexual maturation in response to artificial light regimes.
Lury N. García   +2 more
wiley   +1 more source

Kinesin‐Induced Buckling Reveals the Limits of Microtubule Self‐Repair

open access: yesAdvanced Science, Volume 13, Issue 26, 8 May 2026.
This study shows that kinesin‐driven buckling induces extensive microtubule lattice damage that often exceeds intrinsic self‐repair and leads to filament failure. While curvature, motor motility, and force individually cause limited damage, their combination overwhelms repair.
Shweta Nandakumar   +9 more
wiley   +1 more source

Assessing Colouration in Ichthyology: Insights from the Melanophore Index Perspective

open access: yes
Fish colouration significantly influences various aspects of their biology, including communication, camouflage, and mate selection. Among the pigment cells responsible for generating colours, melanophores are particularly significant due to their ...
Nivethitha, P., Pragasan , L. Arul
core   +1 more source

Melanophore response assay in zebrafish v1

open access: yes, 2018
Melanophores (also called melanocytes) are chromatophores (pigment-containing epithelial cells) that contain black or dark brown pigment granules. The aggregation or dispersal of these cells is under hormonal or nervous system control; these responses ...
Dainara Pereira dos Santos Souza   +1 more
core   +1 more source

Figure 5: Melanophore movement with our Box initial condition.

open access: yes, 2023
Figure 5: Melanophore movement with our Box initial condition. (a)–(d) Snapshots of the ensemble average number density (cells/mm2) across 10, 000 ABM realizations, (e)–(h) corresponding PDE results using the optimal value of αmm for a mesh resolution of
William Martinson (16466514)
core   +1 more source

Coordinated regulation of chromatophore differentiation and melanogenesis during the ontogeny of skin pigmentation of Solea senegalensis (Kaup, 1858). [PDF]

open access: yesPLoS ONE, 2013
Abnormal pigmentation of Senegalese sole has been described as one problem facing the full exploitation of its commercial production. To improve our understanding of flatfish pigmentation of this commercially important species we have evaluated eleven ...
Maria J Darias   +6 more
doaj   +1 more source

Genetic Divergence in the Absence of Strong Ecological Differences Between Coexisting White and Common Atlantic Marine Stickleback

open access: yesEcology and Evolution, Volume 16, Issue 5, May 2026.
We examined whether the “white” threespine stickleback of Nova Scotia represents a nascent species distinct from sympatric common marine sticklebacks. Genomic analyses revealed that whites form a unique genetic cluster with low but widespread divergence across the genome despite evidence of gene flow, while morphometric and isotopic data indicated ...
Kieran Samuk   +2 more
wiley   +1 more source

Melanopsin: An opsin in melanophores, brain, and eye [PDF]

open access: yesProceedings of the National Academy of Sciences, 1998
We have identified an opsin, melanopsin, in photosensitive dermal melanophores of Xenopus laevis . Its deduced amino acid sequence shares greatest homology with cephalopod opsins. The predicted secondary structure of melanopsin indicates the presence of a long cytoplasmic tail with multiple putative phosphorylation ...
Provencio, I.   +4 more
openaire   +3 more sources

Delousing performance of ballan wrasse (Labrus bergylta) and lumpfish (Cyclopterus lumpus): seasonal consistency and the challenge of cryptic lice for lumpfish

open access: yesPest Management Science, Volume 82, Issue 5, Page 4661-4668, May 2026.
Ballan wrasse and lumpfish effectively reduce sea lice on salmon year round, although lumpfish struggle with cryptic lice, highlighting new considerations for lice management. Abstract BACKGROUND Cleaner fish play a crucial role in controlling caligid sea lice in Atlantic salmon aquaculture across the North Atlantic.
Adam Jonathan Brooker   +4 more
wiley   +1 more source

Melanophore size is reduced in enz mutant embryos at 2 dpf.

open access: yes, 2013
Melanophore size is reduced in enz mutant embryos at 2 dpf.
Paul D. Henion (52133)   +2 more
core   +1 more source

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