Elevated temperature and toxic Microcystis reduce Daphnia fitness and modulate gut microbiota

Environmental Pollution, Journal Year: 2020, Volume and Issue: 271, P. 116409 - 116409

Published: Dec. 31, 2020

Language: Английский

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Tumors (re)shape biotic interactions within ecosystems: Experimental evidence from the freshwater cnidarian Hydra

The Science of The Total Environment, Journal Year: 2021, Volume and Issue: 803, P. 149923 - 149923

Published: Aug. 26, 2021

While it is often assumed that oncogenic processes in metazoans can influence species interactions, empirical evidence lacking. Here, we use the cnidarian Hydra oligactis to experimentally explore consequences of tumor associated phenotypic alterations for its predation ability, relationship with commensal ciliates and vulnerability predators. Unexpectedly, hydra's ability was higher tumorous polyps compared non-tumorous ones. Commensal colonized preferentially hydras than ones, had a replication rate on former. Finally, choice experiment, were eaten by fish predator. This study, first time, provides neoplastic growth has potential, through effect(s) host phenotype, alter biotic interactions within ecosystems should thus be taken into account ecologists.

Language: Английский

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Population bottlenecks constrain host microbiome diversity and genetic variation impeding fitness

PLoS Genetics, Journal Year: 2022, Volume and Issue: 18(5), P. e1010206 - e1010206

Published: May 23, 2022

It is becoming increasingly clear that microbial symbionts influence key aspects of their host’s fitness, and vice versa . This may fundamentally change our thinking about how microbes hosts interact in influencing fitness adaptation to changing environments. Here we explore reductions population size commonly experienced by threatened species microbiome diversity. Consequences such are normally interpreted terms a loss genetic variation, increased inbreeding associated depression. However, effects bottlenecks might also be mediated through diversity, as functionally important microbes. utilise 50 Drosophila melanogaster lines with different histories these questions. The were phenotyped for egg-to-adult viability genomes sequenced estimate variation. bacterial 16S rRNA gene was amplified investigate We found 1) host constrained richness 2) core microbiomes low variation constituted from subsets flies higher 3) both diversity contributed 4) connectivity robustness networks the inbred regardless 5) reduced weaker evolutionary responses stressful environments, 6) unrelated Wolbachia density. These findings suggest reduce hologenomic (combined variation). Thus, while current biodiversity crisis focuses on sizes eukaryotes, an additional focal point should carried which turn adaptability consequences persistence populations.

Language: Английский

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Faecal Microbiota Divergence in Allopatric Populations of Podarcis lilfordi and P. pityusensis, Two Lizard Species Endemic to the Balearic Islands

Microbial Ecology, Journal Year: 2022, Volume and Issue: 85(4), P. 1564 - 1577

Published: April 28, 2022

Gut microbial communities provide essential functions to their hosts and are known influence both ecology evolution. However, our knowledge of these complex associations is still very limited in reptiles. Here we report the 16S rRNA gene faecal microbiota profiles two lizard species endemic Balearic archipelago (Podarcis lilfordi P. pityusensis), encompassing allopatric range distribution through a noninvasive sampling, as an alternative previous studies that implied killing specimens IUCN endangered near-threatened species, respectively. Both showed microbiome composition consistent with omnivorous trophic ecology, high representation cellulolytic bacteria taxa. We also identified species-specific core signatures retrieved islet ascription, seasonality main factors explaining bacterial community composition. The different Podarcis populations characterised by harbouring proportion unique taxa, thus reinforcing view divergent evolutionary entities.

Language: Английский

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Adapting to climate with limited genetic diversity: Nucleotide,DNAmethylation and microbiome variation among populations of the social spiderStegodyphus dumicola

Molecular Ecology, Journal Year: 2022, Volume and Issue: 31(22), P. 5765 - 5783

Published: Sept. 16, 2022

Understanding the role of genetic and nongenetic variants in modulating phenotypes is central to our knowledge adaptive responses local conditions environmental change, particularly species with such low population diversity that it likely limit their evolutionary potential. A first step towards uncovering molecular mechanisms underlying population-specific environment carry out association studies. We associated climatic variation genetic, epigenetic microbiome populations a social spider extremely standing diversity. identified are strongly variation, average temperature, pattern consistent adaptation. Variation DNA methylation many genes was correlated wide set climate parameters, thereby revealing different associations than variants, which show strong correlations more restricted range parameters. levels were largely independent cis-genetic overall structure, suggesting can work as an mechanism. Microbiome composition also but most precipitation-related factors. Our results suggest for both shaping phenotypic environments.

Language: Английский

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Wolbachia impacts microbiome diversity and fitness‐associated traits for Drosophila melanogaster in a seasonally fluctuating environment

Ecology and Evolution, Journal Year: 2024, Volume and Issue: 14(7)

Published: July 1, 2024

Abstract The microbiome contributes to many different host traits, but its role in adaptation remains enigmatic. fitness benefits of the often depend on ecological conditions, theory suggests that fluctuations both and environment modulate these benefits. Moreover, vertically transmitted bacteria might constrain ability respond changing environments. Drosophila melanogaster provides an excellent system investigate impacts interactions between environment. To address this question, we created field mesocosms D. undergoing seasonal environmental change with without bacteria, Wolbachia pipientis . Sampling temporal patterns revealed constrained microbial diversity. Furthermore, a dominant member microbiome, Commensalibacter , were associated differences two higher‐order starvation resistance lifespan. Our work here interplay abiotic context microbe–microbe may shape key phenotypes underlie We conclude by exploring consequences complex for our understanding eco‐evolutionary processes host‐microbiome interactions.

Language: Английский

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Evidence for microbially-mediated tradeoffs between growth and defense throughout coral evolution

Animal Microbiome, Journal Year: 2025, Volume and Issue: 7(1)

Published: Jan. 3, 2025

Abstract Background Evolutionary tradeoffs between life-history strategies are important in animal evolution. Because microbes can influence multiple aspects of host physiology, including growth rate and susceptibility to disease or stress, changes animal-microbial symbioses have the potential mediate tradeoffs. Scleractinian corals provide a biodiverse, data-rich, ecologically-relevant system explore this idea. Results Using comparative approach, we tested if coral microbiomes correlate with across 425 million years evolution by conducting cross-species microbiome survey (the “Global Coral Microbiome Project”) combining results long-term global prevalence trait data. Interpreting these data their phylogenetic context, show that microbial dominance predicts susceptibility, traced dominance-disease association single putatively beneficial symbiont genus, Endozoicomonas. Endozoicomonas relative abundance tissue explained 30% variation 60% 40 genera, while also correlating strongly high rates. Conclusions These demonstrate symbiosis correlates both rate, suggest mediating role. Exploration mechanistic basis for findings will be our understanding how

Language: Английский

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Characterization of the microbial communities in Tunisian wild populations of the Mediterranean fruit fly (Ceratitis capitata) and their implications for the future implementation of the sterile insect technique

Insect Science, Journal Year: 2025, Volume and Issue: unknown

Published: March 18, 2025

Abstract Insects and their associated microbiota have developed a sustained mutually beneficial relationship, characterized by the influence of symbiotic microorganisms on host's physiological processes fitness parameters. The Mediterranean fruit fly, Ceratitis capitata (Diptera: Tephritidae), is one world's most ubiquitous, invasive, harmful agricultural pests. In Tunisia, medfly widely distributed across all bioclimatic zones. However, in absence surveillance, infestations can escalate drastically, causing damage levels as high 100%. Our study aimed to characterize microbiome profile Tunisian populations from Zaghouan, Tozeur, Siliana, Bizerte understand microbial dynamics implicated invasiveness adaptability potential if SIT applied. We conducted amplicon sequencing using MiSeq Illumina culture‐dependent approach. findings revealed notable differences communities regions. For instance, Serratia was prevalent Tozeur populations, while Klebsiella showed abundance Bizerte. composition bacterial within influenced several factors including environmental conditions, geographical location, developmental stage, sex insects. Investigating intricate relationship between insects pivotal for understanding biology developing effective pest management strategies. Additionally, isolation bacteria adult larval medflies collected region presence species that could be utilized attractants or supplements artificial diets case application aiming at producing competitive sterile males.

Language: Английский

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Different Species of Yeast Alter the Lifespan and Fecundity of Drosophila melanogaster

Biology Bulletin Reviews, Journal Year: 2025, Volume and Issue: 15(1), P. 109 - 128

Published: Feb. 1, 2025

Language: Английский

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Microbial solutions to dietary stress: experimental evolution reveals host–microbiome interplay in Drosophila melanogaster

Proceedings of the Royal Society B Biological Sciences, Journal Year: 2025, Volume and Issue: 292(2043)

Published: March 1, 2025

Can the microbiome serve as a reservoir of adaptive potential for hosts? To address this question, we leveraged approximately 150 generations experimental evolution in Drosophila melanogaster on stressful, high-sugar diet. We performed fully reciprocal transplant experiment using control and bacteria. If confers benefits to hosts, then recipients should gain fitness compared with controls. Interestingly, found that such exist, but their magnitude depends evolutionary history—mismatches between fly reduced fecundity potentially exerted costs, especially stressful The dominant bacteria ( Acetobacter pasteurianus ) uniquely encoded several genes enable uric acid degradation, mediating toxic effects accumulation due diet flies. Our study demonstrates host genotype × environment interactions have substantial phenotype, highlighting how ecological context together shape microbiome.

Language: Английский

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