Results 41 to 50 of about 4,754 (216)

Paulinella chromatophora – rethinking the transition from endosymbiont to organelle

open access: yesActa Societatis Botanicorum Poloniae, 2014
Eukaryotes co-opted photosynthetic carbon fixation from prokaryotes by engulfing a cyanobacterium and stably integrating it as a photosynthetic organelle (plastid) in a process known as primary endosymbiosis.
Eva C.M. Nowack
doaj   +1 more source

Dynamic Skin Patterns in Cephalopods

open access: yesFrontiers in Physiology, 2017
Cephalopods are unrivaled in the natural world in their ability to alter their visual appearance. These mollusks have evolved a complex system of dermal units under neural, hormonal, and muscular control to produce an astonishing variety of body patterns.
Martin J. How   +4 more
doaj   +1 more source

Identification of key regulatory pathways and genes involved in the dynamic progression of pigmentation in Sinibrama taeniatus

open access: yesFrontiers in Marine Science, 2023
IntorductionColoration is a prominent trait in fish that is closely linked to their market value. Fish exhibit a diverse range of body colors, making them an excellent model for studying molecular mechanisms underlying pigmentation.
Dengyue Yuan   +9 more
doaj   +1 more source

Tight Junction Protein 1a regulates pigment cell organisation during zebrafish colour patterning

open access: yeseLife, 2015
Zebrafish display a prominent pattern of alternating dark and light stripes generated by the precise positioning of pigment cells in the skin. This arrangement is the result of coordinated cell movements, cell shape changes, and the organisation of ...
Andrey Fadeev   +4 more
doaj   +1 more source

Photosensitivity of Chromatophores [PDF]

open access: yesAmerican Zoologist, 1983
Almost all major phyla of invertebrates and lower vertebrates display a direct sensitivity of their chromatophores to light by either dispersing or—in rare cases—aggregating the pigment granules within the cell. This “primary response” of color change is an accessory component of the “dermal light sense” and characterizes the chromatophores as an ...
openaire   +1 more source

A fluorescent chromatophore changes the level of fluorescence in a reef fish. [PDF]

open access: yesPLoS ONE, 2012
Body coloration plays a major role in fish ecology and is predominantly generated using two principles: a) absorbance combined with reflection of the incoming light in pigment colors and b) scatter, refraction, diffraction and interference in structural ...
Matthias F Wucherer, Nico K Michiels
doaj   +1 more source

Genetic Control of Tissue Remodeling by a Non‐Coding SNP in ITGA8 Explains Carotenoid‐Based Color Polymorphism in Marine Mollusks

open access: yesAdvanced Science, EarlyView.
In this study, the orange‐muscle giant abalone (Haliotis gigantea) is used as a model to identify a non‐coding SNP that disrupts the interaction between ITGA8 pre‐mRNA and the splicing factor ILF2, leading to altered ITGA8 splicing. These splicing changes promote carotenoid accumulation in abalone muscle through the regulation of tissue remodeling ...
Xiaohui Wei   +17 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

Mastigophora and Rhizopoda found in saline lakes Weissovo and Repnoie (near Slaviansk). Selected passages describing Ochromonas species and Pedinella. [Translation of: Trudy Obshch.Ispyt.Prir.imp.khar'kov.Univ. 21 119-140, 1888] [PDF]

open access: yes, 1888
This translation includes selected passages of a longer paper on Mastigophora and Rhizopoda found in saline lakes Weissovo and Repnoie. The translation focuses on describing taxonomy and morphology of Ochromonas species and Pedinella.
Vysotskii, A. V.
core  

Sentience in cephalopod molluscs: an updated assessment

open access: yesBiological Reviews, EarlyView.
ABSTRACT This article evaluates the evidence for sentience – the capacity to have feelings – in cephalopod molluscs: octopus, cuttlefish, squid, and nautilus. Our framework includes eight criteria, covering both whether the animal's nervous system could support sentience and whether their behaviour indicates sentience.
Alexandra K. Schnell   +4 more
wiley   +1 more source

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