Results 61 to 70 of about 7,034 (200)

Genetic and phenotypic variation in wood tiger moths from the Caucasus: insights into male warning color variation

Insect Science, EarlyView.
Coloration serves several fitness‐related functions, including thermoregulation, immunity, social signaling, sexual selection, and predator avoidance. Consequently, color polymorphism can have a significant impact on a species’ interactions with its environment, including its relationships with predators, prey, and potential mates. The wood tiger moth (
Juan A. Galarza, Ossi Nokelainen, Melanie N. Brien, Cristina Ottocento, Bibiana Rojas, Janne K. Valkonen, Tamar Chunashvili, Tõnis Tasane, Chris D. Jiggins, Johanna Mappes   +9 more
wiley   +1 more source

En Route to a Chiral Melanin: The Dynamic “From-Imprinted-to-Template” Supramolecular Role of Porphyrin Hetero-Aggregates During the Oxidative Polymerization of L-DOPA

Frontiers in Chemistry, 2020
Chiral porphyrin hetero-aggregates, produced from meso-tetrakis(4-N-methylpyridyl) porphyrin H2T4 and copper(II) meso-tetrakis(4-sulfonatophenyl)porphyrin CuTPPS by an imprinting effect in the presence of L-3,4-dihydroxyphenylalanine (L-DOPA), are shown ...
Massimiliano Gaeta, Rosalba Randazzo, Valentina Villari, Norberto Micali, Alessandro Pezzella, Roberto Purrello, Marco d'Ischia, Alessandro D'Urso   +7 more
doaj   +1 more source

Afamelanotide improves quality of life and light tolerance in Austrian erythropoietic protoporphyria patients

JDDG: Journal der Deutschen Dermatologischen Gesellschaft, EarlyView.
Summary Background Erythropoietic protoporphyria (EPP) is a rare genetic disorder characterized by severe phototoxic reactions that occur within minutes of light exposure. In clinical studies, afamelanotide has been shown to prolong pain‐free sun exposure, improve quality of life, and reduce the frequency and severity of phototoxic reactions ...
Magdalena Seidl‐Philipp, Hanna Schratter, Johanna Auer, Gerold Schwantzer, Maximilian Lammer, Philipp Hinteregger, Ines Vergeiner, Robert Gruber, Peter Wolf, Angelika Hofer   +9 more
wiley   +1 more source

Emerging infectious disease selects for darker plumage coloration in greenfinches

Frontiers in Ecology and Evolution, 2014
Outbreaks of emerging infectious disease offer a unique chance to study viability selection in action in short time windows. Finch trichomonosis, caused by a protozoan Trichomonas gallinae emerged in Great Britain in 2005 and led to epidemic mortality ...
Marju eMänniste, Peeter eHõrak
doaj   +1 more source

Field‐based evidence of impaired sperm quality associated with conventional farming in two passerine birds

Ibis, EarlyView.
The detrimental effects of conventional farming on bird biodiversity are increasingly documented. Despite this, the specific impacts of both organic and conventional farming practices on bird coloration and sperm quality in natural settings remain unexplored. This study aimed to determine whether these farming practices differentially affect body mass,
Ségolène Humann‐Guilleminot, Audrey Bailly, Karine Monceau, Mélissa Desbonnes, Vincent Bretagnolle, Jérôme Moreau   +5 more
wiley   +1 more source

Environmental correlates of spatio‐temporal patterns of colour variation in a bird of prey: The common buzzard (Buteo buteo)

Ibis, EarlyView.
High colour variability in animals has been associated with adaptability to environmental change. Establishing how such variability is distributed in time and space, and identifying environmental correlates, can help understand the processes driving it.
Kaspar Delhey, Elena F. Kappers, Mihai Valcu, Christiaan Both, Bart Kempenaers   +4 more
wiley   +1 more source

How Effective Is Vitamin C for Gingival Depigmentation? A Scoping Review

Clinical and Experimental Dental Research, Volume 12, Issue 2, April 2026.
ABSTRACT Objectives Excessive gingival pigmentation can be treated by surgically removing the pigmented gingival tissue with a scalpel, bur, LASER, electrocautery, cryotherapy, chemical peeling, or masking with free gingival grafts. Recently, vitamin C (ascorbic acid), in gel, powder, or liquid has been used alone or as an adjunct to micro‐needling or ...
Shubhankar Mehrotra, Malvika Shyamkumar, Shravya Marcherla, Aditi Chopra, Marwa Madi   +4 more
wiley   +1 more source

Microsphere Autolithography—A Scalable Approach for Arbitrary Patterning of Dielectric Spheres

Advanced Functional Materials, Volume 36, Issue 19, 5 March 2026.
MicroSphere Autolithography (µSAL) enables scalable fabrication of patchy particles with customizable surface motifs. Focusing light through dielectric microspheres creates well defined, tunable patches via a conformal poly(dopamine) photoresist. Nearly arbitrary surface patterns can be achieved, with the resolution set by the index contrast between ...
Elliott D. Kunkel, Alec G. Burnett, Katherine E. Scheiber, Hans D. Robinson   +3 more
wiley   +1 more source

Chemoenzymatic elaboration of the Raper–Mason pathway unravels the structural diversity within eumelanin pigments†

Chemical Science, 2020
Melanin is a central polymer in living organisms, yet our understanding of its molecular structure remains unresolved. Here, we apply a biosynthetic approach to explore the composite structures accessible in one type of melanin, eumelanin.
Q. Z. Ni, Brianna N. Sierra, J. L. La Clair, M. Burkart   +3 more
semanticscholar   +1 more source

Melanin Metabolism: A Novel Oxidative Degradation Mechanism and Regulation by Hydrolyzed Conchiolin Protein

Journal of Cosmetic Dermatology, Volume 25, Issue 3, March 2026.
ABSTRACT Background Most pharmacological depigmenting agents and cosmetic skin‐brightening products achieve their effects by suppressing melanogenesis. However, the fate of melanin after melanosome transfer to keratinocytes—and the mechanisms governing its intracellular clearance—remains insufficiently explored.
Xinyi Zhao, Haifeng Zeng, Long Zhu, Lihao Gu   +3 more
wiley   +1 more source