Annals of the American Association of Geographers, Journal Year: 2025, Volume and Issue: unknown, P. 1 - 15
Published: May 8, 2025
Language: Английский
Plant Biology, Journal Year: 2025, Volume and Issue: unknown
Published: Jan. 22, 2025
Abstract Island habitats provide unique opportunities to study speciation. Recent work indicates that both ex situ origination and in speciation contribute island species diversity. However, clear evidence of local adaptation endemic plant on islands requires in‐depth studies, which are scarce. This underscores the importance maintaining boundaries by examining how adaptive introgression, hybridization, genetic variation species. Multilocus genome scanning 51 nuclear genes was used investigate evolutionary relationships Scutellaria complex Taiwan assess role diversification generating high endemism Interspecies introgressions were detected phylogenetic networks ABBA‐BABA‐based analysis, suggesting ongoing or recent processes. Coalescent‐based simulation identified hybrid taiwanensis hsiehii , with hybridization between more than two parental Genotype‐environment association studies revealed influence climate, particularly precipitation‐ temperature‐related factors, contributed divergence Additionally, introgression related environmental pressures may have facilitated colonization new identified. research illustrates shaped histories this island‐endemic sheds light multifaceted mechanisms semi‐isolated islands.
Language: Английский
Citations
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Animals, Journal Year: 2025, Volume and Issue: 15(5), P. 624 - 624
Published: Feb. 20, 2025
In the context of global warming, heat tolerance is becoming a crucial physiological trait influencing fish species’ distribution and survival. While our understanding stress has expanded from behavioral studies to transcriptomic analyses, knowledge at level still limited. Recently, highly conserved microRNAs (miRNAs) have provided new insights into molecular mechanisms in fish. This review systematically examines current research across three main reference databases elucidate universal responses miRNAs under stress. Our initial screening 569 articles identified 13 target papers for comprehensive analysis. Among these, least 214 differentially expressed (DEMs) were found, with 15 DEMs appearing two (12 upregulated downregulated). The recurrent analyzed using DIANA mirPath v.3 microT-CDS v5.0 database identify potential genes. results suggest that multiple various genes, forming complex network regulates glucose energy metabolism, maintains homeostasis, modulates inflammation immune responses. Significantly, miR-1, miR-122, let-7a, miR-30b consistently studies, indicating their relevance However, these should not be considered definitive biomarkers without further validation. Future focus on experimentally confirming regulatory roles through functional assays, conducting comparisons different species, performing validation studies. These miRNAs, could valuable monitoring wild health, enhancing aquaculture breeding, guiding conservation strategies. specific need clarification confirm reliability as thermal
Language: Английский
Citations
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Molecular Ecology, Journal Year: 2025, Volume and Issue: unknown
Published: Feb. 28, 2025
Admixture is the exchange of genetic variation between differentiated demes, resulting in ancestry within a population coalescing multiple ancestral source populations. Low-latitude killer whales (Orcinus orca) populations typically have higher diversity than those more densely populated, high productivity and high-latitude regions. This has been hypothesized to be due episodic admixture with distinct backgrounds. We test this hypothesis by estimating local whole genome sequences from three genetically differentiated, low-latitude whale comparing them global variation. find 'Antarctic-like' tracts genomes southwestern Australia (SWA) including recent (within last 2-4 generations) admixture. Admixed individuals had, on average, shorter fewer runs homozygosity unadmixed increased effective size (Ne). Thus, connectivity demes results maintenance Ne relatively small at level comparable sum across demes. A subset admixed regions was inferred evolving under selection SWA population, suggesting that may contributing population's adaptive potential. study provides important rare empirical evidence can maintain sporadic different backgrounds promote long-term stability Ne.
Language: Английский
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Molecular Ecology, Journal Year: 2025, Volume and Issue: unknown
Published: March 5, 2025
Freshwater ecosystems and their biota are under increasing pressure from anthropogenic stressors. In response to declining fish stocks, hatchery stocking programmes widely implemented as core components of restoration management strategies, with positive outcomes for some wild populations. Despite this, remains contentious due potential genetic ecological risks Monitoring evaluation critical ensuring the long-term sustainability populations, but identification stocked individuals post-release a key challenge, particularly mobile species. this study, we combined otolith (natal origin age) genomic data identify evaluate implications culturally socioeconomically important freshwater fish, golden perch Macquaria ambigua (family: Percichthyidae), across Australia's Murray-Darling Basin (MDB). We also generated chromosome-level genome assembly. Many close kin were detected MDB, in prevalence over recent decades mostly origin. Rivers many associated low effective population sizes (Ne < 100). Genetic signatures varied according local context, being most pronounced not restricted rivers considered functionally isolated purposes. Where into that part connected metapopulation, there is scope modify current practices avoid over-representation related individuals. Increased focus on diversity likely promote persistence wild.
Language: Английский
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PLoS Genetics, Journal Year: 2025, Volume and Issue: 21(3), P. e1011624 - e1011624
Published: March 31, 2025
Hybridization among taxa impacts a variety of evolutionary processes from adaptation to extinction. We seek understand both patterns hybridization across and the ecological forces driving those patterns. To this end, we use whole-genome low-coverage sequencing 458 wild-grown 1565 offspring individuals characterize structure, stability, mating dynamics admixed populations Mimulus guttatus nasutus decade sampling. In three streams, genomes are common M. organellar haplotype is fixed in guttatus, but new events rare. Admixture strongly unidirectional, each stream has unique distribution ancestry proportions. one stream, distinct cohorts spatially structured at ~20-50m resolution stable years. Mating system provides almost complete isolation , partial barrier between cohorts. Isolation due phenology near-complete nasutus. Phenological strong some years cohorts, much weaker other years, providing potential bridge for gene flow. These fluctuations associated with differences water availability supporting role climate mediating strength reproductive isolation. Together, accurately predict assortative which estimate directly using paired maternal genotypes. Climate-driven may promote longer-term stability complex mosaic hybrid ancestry, preventing either or collapse species barriers.
Language: Английский
Citations
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Ecology and Evolution, Journal Year: 2025, Volume and Issue: 15(4)
Published: April 1, 2025
ABSTRACT Assessing population vulnerability to climate change is essential for informing management and conservation strategies, particularly amphibians. We integrated genetics ecological niche modeling (ENM) assess the effect of on distribution genetic structure two species Asian warty newts ( Paramesotriton deloustali P. guangxiensis ) in northern Vietnam. analyzed using a genome‐wide SNP dataset generated with MIG‐seq method. Additionally, we applied ensemble predict potential under scenarios (SSP2‐4.5 SSP5‐8.5) periods 2050 2090. Population revealed three primary groups: West, East + Cao Bang (CB), Quang Ninh (QN). CB exhibited discordance between mitochondrial DNA single‐nucleotide nuclear polymorphism data. Furthermore, gene flow within populations was restricted, West QN. Spatial analyses clusters conditioned by environmental variables predicted that cluster would expand, whereas those QN decrease. The introgression structures probably reduces change. ENM analysis these are susceptible change, resulting reduction their suitable habitat areas across all scenarios. also observed shift toward higher elevations. Our results suggest mountainous Vietnam could serve as refugia effects intensify.
Language: Английский
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Molecular Phylogenetics and Evolution, Journal Year: 2025, Volume and Issue: unknown, P. 108344 - 108344
Published: April 1, 2025
Language: Английский
Citations
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Plant Diversity, Journal Year: 2025, Volume and Issue: unknown
Published: April 1, 2025
Language: Английский
Citations
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Frontiers in Plant Science, Journal Year: 2025, Volume and Issue: 16
Published: April 8, 2025
Climate change is a fact that impacts all living organisms. To understand its effects, numerous methods and techniques have been refined in recent years, with species distribution modeling (SDM) being one of the most widely used. This study applied SDM to examine seventeen Sphagnum species, group non-vascular land plants throughout Türkiye, under changing climate conditions. The considered global model (GCM)-BCC-CSM2-HR-two scenarios (SSP1-2.6 SSP5-8.5), two time periods (2021-2040 2081-2100). For analysis, total 211 occurrence records for whole were According results, future status some similar current status, but show differences. Especially SSP5-8.5 scenario 2081-2100 period, it seen there decrease patterns integrals. Our shows simulation these mosses, which ability hold lot water, thus providing valuable information conservation at both local regional levels across Türkiye.
Language: Английский
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Evolutionary Ecology, Journal Year: 2025, Volume and Issue: unknown
Published: April 10, 2025
Language: Английский
Citations
0