Physiology, Journal Year: 2023, Volume and Issue: 39(1), P. 4 - 4
Published: Dec. 7, 2023
Language: Английский
ZOOLOGICAL SCIENCE, Journal Year: 2025, Volume and Issue: 42(1)
Published: Jan. 29, 2025
Animals possess many light-sensitive molecules. They exist as dedicated photoreceptors, or byproducts of biochemical reactions. Their numbers are often high even in species that live environments humans would consider dark, well considered comparably simple (e.g., worms, cnidarians). But why there so photoreceptors? We provide some considerations on this question. Light conveys a significant amount information to animals, through complex spectral and intensity changes, specific the spatial temporal ecological niches inhabits. discuss large number opsins cryptochromes, also present outside eyes partially co-expressed, represent adaptation mechanisms highly light environment within given niche. While theoretical, it is plausible hypothesis most experimentally tested cryptochromes have been shown be functional photoreceptors. The example lunar solar timing marine annelid Platynereis dumerilii provides insight how animals use cellular properties different photoreceptors decode versus light, their adaptations Drosophila melanogaster. suggest future understanding biological processes will strongly benefit from comparative lab field work same species, first for such P. dumerilii. Finally, we point out animal detection systems adaptability crucial understand impact anthropogenic changes ecosystems.
Language: Английский
Citations
1
eLife, Journal Year: 2024, Volume and Issue: 12
Published: May 14, 2024
The circadian clock enables anticipation of the day/night cycle in animals ranging from cnidarians to mammals. Circadian rhythms are generated through a transcription-translation feedback loop (TTFL or pacemaker) with CLOCK as conserved positive factor animals. However, CLOCK’s functional evolutionary origin and mechanism action basal unknown. In cnidarian Nematostella vectensis , pacemaker gene transcript levels, including NvClk (the Clock ortholog), appear arrhythmic under constant darkness, questioning role NvCLK. Utilizing CRISPR/Cas9, we allele mutant ( Δ ), revealing behavior loss dark (DD) light (LL), while maintaining 24 hr rhythm light-dark condition (LD). Transcriptomics analysis revealed distinct rhythmic genes wild-type (WT) polypsunder LD compared DD conditions. LD, Δ/Δ polyps exhibited comparable numbers genes, but were reduced DD. Furthermore, showed alterations temporal expression, impacting their potential interactions. Additionally, differential expression non-rhythmic associated cell division neuronal differentiation was observed. These findings that light-responsive pathway can partially compensate for disruption, has evolved synchronize physiology diel earth’s biosphere.
Language: Английский
Citations
2
EMBO Reports, Journal Year: 2024, Volume and Issue: 25(8), P. 3169 - 3176
Published: July 16, 2024
Language: Английский
Citations
1
eLife, Journal Year: 2023, Volume and Issue: 12
Published: Sept. 1, 2023
The circadian clock enables anticipation of the day/night cycle in animals ranging from cnidarians to mammals. Circadian rhythms are generated through a transcription-translation feedback loop (TTFL or pacemaker) with CLOCK as conserved positive factor animals. However, CLOCK’s functional evolutionary origin and mechanism action basal unknown. In cnidarian Nematostella vectensis , pacemaker gene transcript levels, including NvClk (the Clock ortholog), appear arrhythmic under constant darkness, questioning role NvCLK. Utilizing CRISPR/Cas9, we allele mutant ( Δ ), revealing behavior loss dark (DD) light (LL), while maintaining 24 hr rhythm light-dark condition (LD). Transcriptomics analysis revealed distinct rhythmic genes wild-type (WT) polypsunder LD compared DD conditions. LD, Δ/Δ polyps exhibited comparable numbers genes, but were reduced DD. Furthermore, showed alterations temporal expression, impacting their potential interactions. Additionally, differential expression non-rhythmic associated cell division neuronal differentiation was observed. These findings that light-responsive pathway can partially compensate for disruption, has evolved synchronize physiology diel earth’s biosphere.
Language: Английский
Citations
3
Frontiers in Veterinary Science, Journal Year: 2024, Volume and Issue: 11
Published: Sept. 20, 2024
Introduction The morphological characteristics of eyes in fishes are highly diverse and have evolved to meet the specific visual requirements as per their habitats. These features important for researchers ecologists. dusky spinefoot ( Siganus luridus ) is a tropical teleost fish with laterally flattened body which lives Mediterranean Sea. Currently, there no histological data relating eye. Methods In this study, morphology eye was examined enhance our understanding its structure relationship ecology. Detailed gross microscopic were recorded using light scanning microscopy. Results key observations describe main structural , specifically, diameter orbit, architecture three tunics detailed lens description. choroid divided into four layers, had rete mirabile consisting numerous small blood vessels choroidal gland. tapetum lucidum observed, interesting since herbivore herbivores typically lack . Discussion shed new on intricate provide valuable insights abilities adaptations aquatic environment feeding behavior.
Language: Английский
Citations
0
Published: Oct. 12, 2024
Rather than putting problems solving them, the goal of this paper is to unlock philosophical meanings difference between three domains announced in title. But it made as a joke: preliminary part too big, however not superfluous for main one that deals just with problem discontinuity virtual. Thus, after nevertheless summary resolution helpful concepts, starts within an objectivist scientific key, and once more arrives at methodological idea inherited from old names calling are concepts. they describe something, irrespective their ambiguity. As result, features appear only ideas, historical developments reflections upon but also structural intertwining, grades “amplitudes” ruptures _within _the themselves, dialectic challenges concepts continuity discontinuity. This entire process aimed extricating characteristics same time invites review definitions domains: first all, criteria definitions. Obviously, problematic domain virtual, captured through entwined couple constituted empirical notion concept, _joy life_ _plenitude_. And here surprise: virtual specific non-living reality derives its peculiarity AI rational being.
Language: Английский
Citations
0
Published: Nov. 2, 2024
Rather focusing on problems than solving them, the goal of this paper is to unlock philosophical meanings difference between three domains announced in title. But it made as a joke: preliminary part too big, however not superfluous for main one that deals just with problem discontinuity virtual. Thus, after nevertheless summary resolution helpful concepts, starts within an objectivist scientific key, and once more arrives at methodological idea inherited from old names calling are concepts. they describe something, irrespective their ambiguity. As result, features appear only ideas, historical developments reflections upon but also structural intertwining, grades “amplitudes” ruptures _within _the themselves, dialectic challenges concepts continuity discontinuity. This entire process aimed extricating characteristics same time invites review definitions domains: first all, criteria definitions. Obviously, problematic domain virtual, captured through entwined couple constituted empirical notion concept, _joy life_ _plenitude_. And here surprise: virtual specific non-living reality derives its peculiarity AI rational being.
Language: Английский
Citations
0
Physiology, Journal Year: 2023, Volume and Issue: 39(1), P. 4 - 4
Published: Dec. 7, 2023
Language: Английский
Citations
0