“A circadian clock drives behavioral activity in Antarctic krill (Euphausia superba) and provides a potential mechanism for seasonal timing” DOI Open Access
Lukas Hüppe, Dominik Bahlburg, Ryan Driscoll

и другие.

Опубликована: Апрель 3, 2025

Antarctic krill is a species with fundamental importance for the Southern Ocean ecosystem. Their large biomass and synchronized movements, like diel vertical migration (DVM), significantly impact ecosystem structure biological carbon pump. Despite decades of research, mechanistic basis DVM remains unclear. Circadian clocks help organisms anticipate daily environmental changes, optimizing adaptation. In this study, we used recently developed activity monitor to record swimming individual, wild-caught under various light conditions across different seasons. Our data demonstrate how circadian clock, in combination light, drives distinct bimodal pattern activity, which could facilitate ecologically important behavioral patterns, such as DVM. Rapid damping flexible synchronization indicate that clock adapted life at high latitudes seasonal recordings suggest clock-based mechanism timing processes. findings advance our understanding high-latitude adaptation key species.

Язык: Английский

A comprehensive study of the colloidal properties, biocompatibility, and synergistic antioxidant actions of Antarctic krill phospholipids DOI
Dong Su,

Xixi Wang,

Xiaofang Liu

и другие.

Food Chemistry, Год журнала: 2024, Номер 451, С. 139469 - 139469

Опубликована: Апрель 24, 2024

Язык: Английский

Процитировано

4
Evolutionary tinkering enriches the hierarchical and nested structures in amino acid sequences DOI Creative Commons
Zecheng Zhang, Chunxiuzi Liu,

Yingjun Zhu

и другие.

Physical Review Research, Год журнала: 2024, Номер 6(2)

Опубликована: Май 28, 2024

Genetic information often exhibits hierarchical and nested relationships, achieved through the reuse of repetitive subsequences such as duplicons transposable elements, a concept termed “evolutionary tinkering” by François Jacob. Current bioinformatics tools struggle to capture these, particularly nested, relationships. To address this, we utilized ladderpath, an approach within broader category algorithmic theory, introducing two key measures: order rate η for characterizing sequence pattern repetitions regularities, ladderpath-complexity κ assessing richness. Our analysis amino acid sequences revealed that humans have more with higher κ values, proteins many intrinsically disordered regions exhibit increased η values. Additionally, it was found extremely long low η are rare. We hypothesize this arises from varied duplication mutation frequencies across different evolutionary stages, which in turn suggests zigzag evolution protein complexity. This is supported simulations studies families ubiquitin NBPF, implying species-specific or environment-influenced elongation strategies. The ladderpath offers quantitative lens understand tinkering reuse, shedding light on generative aspects biological structures. Published American Physical Society 2024

Язык: Английский

Процитировано

4
Population structure and adaptability analysis of Schizothorax o’connori based on whole-genome resequencing DOI Creative Commons

Kuo Gao,

Zhi He,

Jinxin Xiong

и другие.

BMC Genomics, Год журнала: 2024, Номер 25(1)

Опубликована: Фев. 6, 2024

Abstract Background Schizothorax o’connori is an endemic fish distributed in the upper and lower reaches of Yarlung Zangbo River China. It has experienced a fourth round whole gene replication events good model for exploring genetic differentiation environmental adaptability Qinghai-Tibet Plateau. The uplift Plateau led to changes river system, thereby affecting exchange population between populations. With release genome data, resequencing been widely used evolutionary analysis screening selected genes fish, which can better elucidate basis molecular adaptation mechanisms fish. Therefore, our purpose this study was understand structure adaptive characteristics S. using whole-genome method . Results results showed that 23,602,746 SNPs were identified from seven populations, mostly on chromosomes 2 23. There no significant diversity relatively low. However, Zangga could be separated Bomi, Linzhi, Milin populations cluster analysis. Based historical dynamics population, size ancestral affected by late accelerated Qinghai Tibet Fourth Glacial Age. sites enriched pathways related DNA repair energy metabolism. Conclusion Overall, provides valuable insights into obvious at level upstream downstream River. current distribution pattern are influenced Ice metabolism adapt low temperature strong ultraviolet radiation environment high altitude.

Язык: Английский

Процитировано

3
Analysis of Whole-Genome as a Novel Strategy for Animal Species Identification DOI Open Access

Yutong Gan,

Guihong Qi,

Lijun Hao

и другие.

International Journal of Molecular Sciences, Год журнала: 2024, Номер 25(5), С. 2955 - 2955

Опубликована: Март 3, 2024

Survival crises stalk many animals, especially endangered and rare animals. Accurate species identification plays a pivotal role in animal resource conservation. In this study, we developed an method called Analysis of whole-GEnome (AGE), which identifies by finding species-specific sequences through bioinformatics analysis the whole genome subsequently recognizing these using experimental technologies. To clearly demonstrate AGE method, Cervus nippon, well-known species, closely related elaphus, were set as model without with published genomes, respectively. By analyzing genomes C. nippon obtained next-generation sequencing online databases, built specific sequence databases containing 7,670,140 570,981 sequences, Then, specificities confirmed experimentally Sanger CRISPR-Cas12a system. Moreover, for 11 fresh samples 35 commercially available products, our results complete agreement those other authoritative methods, demonstrating AGE’s precision potential application. Notably, found mixture products successfully identified it. This study broadens horizons sheds light on conserving resources.

Язык: Английский

Процитировано

3
The repetitive genome of theIxodes ricinustick reveals transposable elements have driven genome evolution in ticks DOI Creative Commons
Isobel Ronai, Rodrigo P. Baptista, Nicole S. Paulat

и другие.

bioRxiv (Cold Spring Harbor Laboratory), Год журнала: 2024, Номер unknown

Опубликована: Март 14, 2024

ABSTRACT Ticks are obligate blood-feeding parasites associated with a huge diversity of diseases globally. The hard tick Ixodes ricinus is the key vector Lyme borreliosis and tick-borne encephalitis in Western Eurasia. ticks have large repetitive genomes that not yet well characterized. Here we generate two high-quality I . genome assemblies, haploid sizes approximately 2.15 Gbp. We find transposable elements comprise at least 69% I. genomes, amongst highest proportions found animals. highly diverse novel, so constructed repeat library for using our scapularis , another major borreliosis. To understand impact on compared their accumulation sister species. these species to be drivers evolution ticks. assemblies will valuable resources biological insights into this important ectoparasite. Our findings highlight further research required.

Язык: Английский

Процитировано

3
Double trouble: two retrotransposons triggered a cascade of invasions in Drosophila species within the last 50 years DOI Creative Commons

Almorò Scarpa,

Riccardo Pianezza, Hannah R. Gellert

и другие.

Nature Communications, Год журнала: 2025, Номер 16(1)

Опубликована: Янв. 9, 2025

Abstract Horizontal transfer of genetic material in eukaryotes has rarely been documented over short evolutionary timescales. Here, we show that two retrotransposons, Shellder and Spoink , invaded the genomes multiple species melanogaster subgroup within last 50 years. Through horizontal transfer, spread D. during 1980s, while both simulans 1990s. Possibly following hybridization, infected island endemic mauritiana (Mauritius) sechellia (Seychelles) with TEs after 1995. In same approximate time-frame, also teissieri a confined to sub-Saharan Africa. We find donors are likely American Drosophila from willistoni cardini repleta groups. Thus, described cascade TE invasions could only become feasible extended their distributions into Americas 200 years ago, aided by human activity. Our work reveals cascades invasions, initiated human-mediated range expansions, have an impact on genomic phenotypic evolution geographically dispersed species. Within few decades, invade many species, including endemics, very distant donor TE.

Язык: Английский

Процитировано

0
Genomic and Methylomic Signatures Associated With the Maintenance of Genome Stability and Adaptive Evolution in Two Closely Allied Wolf Spiders DOI Open Access
Qing Zuo, Runbiao Wu,

Lina Sun

и другие.

Molecular Ecology Resources, Год журнала: 2025, Номер unknown

Опубликована: Янв. 20, 2025

ABSTRACT Pardosa spiders, belonging to the wolf spider family Lycosidae, play a vital role in maintaining health of forest and agricultural ecosystems due their function pest control. This study presents chromosome‐level genome assemblies for two allied species, P. laura agraria . Both species' genomes show notable expansion helitron transposable elements, which contributes large sizes. Methylome analysis indicates that has higher overall DNA methylation levels compared may not only aids element‐driven but also positively affects three‐dimensional organisation after transposon amplification, thereby potentially enhancing stability. Genes associated with hyper‐differentially methylated regions (compared ) are enriched functions related mRNA processing energy production. Furthermore, combined transcriptome methylome profiling uncovered complex regulatory interplay between gene expression, emphasising important body regulation expression. Comparative genomic shows significant cuticle protein detoxification‐related families , improve its adaptability various habitats. provides essential methylomic insights, offering deeper understanding relationship elements stability, illuminating adaptive evolution species differentiation among spiders.

Язык: Английский

Процитировано

0
A circadian clock drives behavioral activity in Antarctic krill (Euphausia superba) and provides a potential mechanism for seasonal timing DOI Open Access
Lukas Hüppe, Dominik Bahlburg, Ryan Driscoll

и другие.

Опубликована: Янв. 23, 2025

Antarctic krill is a species with fundamental importance for the Southern Ocean ecosystem. Their large biomass and synchronized movements, like diel vertical migration (DVM), significantly impact ecosystem structure biological carbon pump. Despite decades of research, mechanistic basis DVM remains unclear. Circadian clocks help organisms anticipate daily environmental changes, optimizing adaptation. In this study, we used recently developed activity monitor to record swimming individual, wild-caught under various light conditions across different seasons. Our data demonstrate how circadian clock, in combination light, drives distinct bimodal pattern activity, which could facilitate ecologically important behavioral patterns, such as DVM. Rapid damping flexible synchronization indicate that clock adapted life at high latitudes seasonal recordings suggest clock-based mechanism timing processes. findings advance our understanding high-latitude adaptation key species.

Язык: Английский

Процитировано

0
A circadian clock drives behavioral activity in Antarctic krill (Euphausia superba) and provides a potential mechanism for seasonal timing DOI Open Access
Lukas Hüppe, Dominik Bahlburg, Ryan Driscoll

и другие.

Опубликована: Янв. 23, 2025

Antarctic krill is a species with fundamental importance for the Southern Ocean ecosystem. Their large biomass and synchronized movements, like diel vertical migration (DVM), significantly impact ecosystem structure biological carbon pump. Despite decades of research, mechanistic basis DVM remains unclear. Circadian clocks help organisms anticipate daily environmental changes, optimizing adaptation. In this study, we used recently developed activity monitor to record swimming individual, wild-caught under various light conditions across different seasons. Our data demonstrate how circadian clock, in combination light, drives distinct bimodal pattern activity, which could facilitate ecologically important behavioral patterns, such as DVM. Rapid damping flexible synchronization indicate that clock adapted life at high latitudes seasonal recordings suggest clock-based mechanism timing processes. findings advance our understanding high-latitude adaptation key species.

Язык: Английский

Процитировано

0
Mechanisms Underlying Astaxanthin Alterations During On-Site Processing of Antarctic Krill (Euphausia superba) DOI

Xixi Wang,

Xinyu Ma, Yating Zhang

и другие.

Journal of Food Composition and Analysis, Год журнала: 2025, Номер unknown, С. 107339 - 107339

Опубликована: Фев. 1, 2025

Язык: Английский

Процитировано

0