Results 51 to 60 of about 3,969 (218)

Differentiation of zebrafish melanophores depends on transcription factors AP2 alpha and AP2 epsilon.

open access: yesPLoS Genetics, 2010
A model of the gene-regulatory-network (GRN), governing growth, survival, and differentiation of melanocytes, has emerged from studies of mouse coat color mutants and melanoma cell lines.
Eric Van Otterloo   +5 more
doaj   +1 more source

Distinct patterns of pigment development underlie convergent hyperpigmentation between nocturnal and diurnal geckos (Squamata: Gekkota)

open access: yesBMC Evolutionary Biology, 2020
Background Evolutionary transitions in temporal niche necessitates specialized morphology, physiology, and behaviors. Diurnal, heliothermic squamates (lizards and snakes) that bask require protection from ultraviolet radiation (UV) that can damage ...
Aaron H. Griffing   +2 more
doaj   +1 more source

Acute toxicity of Gammalin 20 to Chrysichthys nigrodigitatus (Lacepede) [PDF]

open access: yes, 2003
The impact of acute exposure of Gammalin 20 (an organochlorine pesticide) was investigated in a static bioassay test over a 96-(4-day) period on the fingerlings of Chrysichthys nigrodigitatus (lacepede).
Oti, E.E.
core  

ADAMTS9, a member of the ADAMTS family, in Xenopus development [PDF]

open access: yes, 2018
Extracellular matrix (ECM) remodeling by metalloproteinases is crucial during development. The ADAMTS (A Disintegrin and Metalloproteinase with Thrombospondin type I motifs) enzymes are secreted, multi-domain matrix-associated zinc metalloendopeptidases ...
Boerboom   +37 more
core   +1 more source

Integrative taxonomy reveals four new species of the armoured catfish genus Pareiorhina (Siluriformes: Loricariidae) from the upper Paraná River basin, Brazil

open access: yesJournal of Fish Biology, EarlyView.
Abstract Four new species of the small‐sized armoured catfish genus Pareiorhina are described from mountain ranges in the Grande River drainage, upper Paraná River basin, based on morphological and molecular species delimitation methods. Molecular analyses based on the cytochrome oxidase subunit I (COI) marker recovered Pareiorhina as polyphyletic ...
Pedro L. C. Uzeda   +6 more
wiley   +1 more source

Ontogeny of melanophore photosensitivity in rainbow trout (Oncorhynchus mykiss)

open access: yesBiology Open, 2014
Migratory species experience morphological and physiological changes during transitions between different life stages. In particular, modification of sensory systems is critical for animals to adapt to new environments.
Shyh-Chi Chen   +2 more
doaj   +1 more source

Dynamic colour change predicts movement behaviour in a diadromous fish

open access: yesJournal of Fish Biology, EarlyView.
Abstract Dynamic changes in colour and pattern facilitate key behavioural functions in animals, particularly camouflage for predator avoidance. However, the benefits of colour change depend on the environmental and behavioural contexts. We tested how colour change interacts with movement behaviour in a freshwater fish by filming individuals in an open ...
Joshua S. Barrow, John R. Morrongiello
wiley   +1 more source

Genetical identification and morphological description of the larvae and juveniles of Porocottus leptosomus (Pisces: Cottidae) from Korea

open access: yesFisheries and Aquatic Sciences, 2018
The larvae and juveniles of Porocottus leptosomus belonging to the family Cottidae were collected (n = 95, 3.9–16.5 mm in body length, BL) from Busan, Korea, in March 2015. The larvae and juvenile were identified using DNA barcoding as P. leptosomus, and
Ui Cheol Shin   +4 more
doaj   +1 more source

Black and White: Structural and Functional Aspects of Dermal Chromatophores of the Marbled Whiptail Lizard (Cnemidophorus Marmoratus) [PDF]

open access: yes, 2004
The skin of reptiles is a complex organ with many sensory, regulatory and behavioral functions. Desert reptiles face a suite of challenges as their skin contacts hot-dry environmental surfaces.
Swan, James
core   +1 more source

Pigmentation disorders in three specimens of spiny dogfish, Squalus acanthias Linnaeus, 1758, from the Gulf of Venice, northern Adriatic Sea

open access: yesJournal of Fish Biology, EarlyView.
Abstract This study reports three cases of pigmentation disorders in Squalus acanthias from the Gulf of Venice. Two specimens exhibited spotless phenotypes, whereas one exhibited hypermelanism. Morphological assessments were conducted for two individuals, alongside genetic analysis of mitochondrial genes to determine phylogeographic relationships. Both
Jacopo Bernardi   +5 more
wiley   +1 more source

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