Results 91 to 100 of about 7,818 (207)

Year 1 report for ‘Conserving Texas Biodiversity: Status, Trends, and Conservation Planning for Fishes of Greatest Conservation Need’ [PDF]

open access: yes, 2015
State Wildlife Grant Program, grant TX T-106-1 (CFDA# 15.634), Contract No. 459125 UTA14-001402Substantive progress was made on all major Project Activities in this first year: Activity 1.
Casarez, Melissa   +4 more
core   +1 more source

Clinal Variation in Reproductive Modes and Offspring Body Condition Across a Contact Zone of a Bimodal Viviparous Salamander

open access: yesEcology and Evolution, Volume 16, Issue 3, March 2026.
We examined clinal gradients in reproductive modes and associated offspring body condition across a hybrid zone between two bimodal viviparous subspecies of Salamandra salamandra. We found a clear cline in reproductive modes, with pure modes at the extremes and mixed modes in central populations.
Clara Figueiredo‐Vázquez   +2 more
wiley   +1 more source

The expression of melanopsin and clock genes in Xenopus laevis melanophores and their modulation by melatonin

open access: yesBrazilian Journal of Medical and Biological Research, 2012
Vertebrates have a central clock and also several peripheral clocks. Light responses might result from the integration of light signals by these clocks. The dermal melanophores of Xenopus laevis have a photoreceptor molecule denominated melanopsin (OPN4x)
A.P.C. Bluhm   +3 more
doaj   +2 more sources

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

Desmognathus abditus [PDF]

open access: yes, 2010
Number of Pages: 2Integrative BiologyGeological ...
Tilley, Steven G.
core   +1 more source

A vital dye analysis of the timing and pathways of avian trunk neural crest cell migration [PDF]

open access: yes, 1989
To permit a more detailed analysis of neural crest cell migratory pathways in the chick embryo, neural crest cells were labelled with a nondeleterious membrane intercalating vital dye, DiI.
Bronner-Fraser, Marianne E.   +2 more
core  

Post-embryonic nerve-associated precursors to adult pigment cells: genetic requirements and dynamics of morphogenesis and differentiation.

open access: yesPLoS Genetics, 2011
The pigment cells of vertebrates serve a variety of functions and generate a stunning variety of patterns. These cells are also implicated in human pathologies including melanoma.
Erine H Budi   +2 more
doaj   +1 more source

Ichthyoplankton Adjacent to Live-Bottom Habitats in Onslow Bay, North Carolina [PDF]

open access: yes, 1998
The abundance and distribution of ichthyoplankton adjacent to live-bottom habitats (rock outcroppings containing rich, sessile invertebrate communities and many species of tropical and subtropical fishes) in open-shelf waters « 55-m isobath) in Onslow ...
Powell, Allyn B., Robbins, Roger E.
core  

Pseudoeurycea unguidentis [PDF]

open access: yes, 1999
Number of Pages: 2Integrative BiologyGeological ...
Lynch, James F., Wake, David B.
core   +1 more source

Heterotypic interactions regulate cell shape and density during color pattern formation in zebrafish

open access: yesBiology Open, 2016
The conspicuous striped coloration of zebrafish is produced by cell-cell interactions among three different types of chromatophores: black melanophores, orange/yellow xanthophores and silvery/blue iridophores.
Prateek Mahalwar   +4 more
doaj   +1 more source

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