Results 21 to 30 of about 85,236 (300)

Opsin genes: research perspectives with Neotropical cichlids (Perciformes: Cichlidae) and their relevance in floodplain studies

open access: yesActa Scientiarum: Biological Sciences, 2016
Vision not only plays an important role in the behavior and exploration capacity of new ecology niches but also influences the evolution of species exposed to the heterogeneity of light.
Thomaz Mansini Carrenho Fabrin   +3 more
doaj   +1 more source

Life Cycle Impact Assessment of Microalgae and Synthetic Astaxanthin Pigments

open access: yesEnvironmental and Climate Technologies, 2023
The marketability of fish depends on the visual appearance of the fish, so the feed ingredient pigment contributes to the nutritional value and visual appearance of the product. The benefits of a natural pigment derived from microalgae are the ecological
Zlaugotne Beate   +3 more
doaj   +1 more source

Evolution of the eyes of vipers with and without infrared-sensing pit organs [PDF]

open access: yes, 2019
We examined lens and brille transmittance, photoreceptors, visual pigments, and visual opsin gene sequences of viperid snakes with and without infrared-sensing pit organs. Ocular media transmittance is high in both groups.
Douglas, R. H.   +12 more
core   +3 more sources

Cone visual pigments

open access: yesBiochimica et Biophysica Acta (BBA) - Bioenergetics, 2014
Cone visual pigments are visual opsins that are present in vertebrate cone photoreceptor cells and act as photoreceptor molecules responsible for photopic vision. Like the rod visual pigment rhodopsin, which is responsible for scotopic vision, cone visual pigments contain the chromophore 11-cis-retinal, which undergoes cis-trans isomerization resulting
Imamoto, Yasushi, Shichida, Yoshinori
openaire   +2 more sources

Visual pigments in a living fossil, the Australian lungfish Neoceratodus forsteri

open access: yesBMC Evolutionary Biology, 2007
Background One of the greatest challenges facing the early land vertebrates was the need to effectively interpret a terrestrial environment. Interpretation was based on ocular adaptations evolved for an aquatic environment millions of years earlier.
Davies Wayne L   +3 more
doaj   +1 more source

Evolutionary ecology of opsin gene sequence, expression and repertoire. [PDF]

open access: yes, 2017
Linking molecular evolution to biological function is a long-standing challenge in evolutionary biology. Some of the best examples of this involve opsins, the genes that encode the molecular basis of light reception.
Owens, Gregory L, Rennison, Diana J
core   +1 more source

A holistic multimodal approach to the non-invasive analysis of watercolour paintings [PDF]

open access: yes, 2015
A holistic approach using non-invasive multimodal imaging and spectroscopic techniques to study the materials (pigments, drawing materials and paper) and painting techniques of watercolour paintings is presented.
Bailey, K   +6 more
core   +2 more sources

Fruit ripening: dynamics and integrated analysis of carotenoids and anthocyanins

open access: yesBMC Plant Biology, 2022
Background Fruits are vital food resources as they are loaded with bioactive compounds varying with different stages of ripening. As the fruit ripens, a dynamic color change is observed from green to yellow to red due to the biosynthesis of pigments like
Leepica Kapoor   +3 more
doaj   +1 more source

Inheritance of determinants of flower colour in tetraploid roses [PDF]

open access: yes, 2009
The choice of selection breeding for crop improvement in cut roses requires a better understanding of biological mechanisms and knowledge of the inheritance of the major target traits which can lead to new or improved screening methods.
Gitonga, V.W.   +5 more
core   +3 more sources

Vitamin A Deficiency Alters the Phototransduction Machinery and Distinct Non-Vision-Specific Pathways in the Drosophila Eye Proteome

open access: yesBiomolecules, 2022
The requirement of vitamin A for the synthesis of the visual chromophore and the light-sensing pigments has been studied in vertebrate and invertebrate model organisms.
Mukesh Kumar   +12 more
doaj   +1 more source

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