Is the diet cyclic phase‐dependent in boreal vole populations?

Ecology and Evolution, Journal Year: 2024, Volume and Issue: 14(4)

Published: April 1, 2024

Abstract Herbivorous rodents in boreal, alpine and arctic ecosystems are renowned for their multi‐annual population cycles. Researchers have hypothesised that these cycles may result from herbivore–plant interactions various ways. For instance, if the biomass of preferred food plants is reduced after a peak phase cycle, rodent diets can be expected to become dominated by less plants, leading crash. It could also taxonomic diversity increases crash cycle. The present study first use DNA metabarcoding quantify two functionally important boreal species (bank vole tundra vole) assess whether diet changed systematically cyclic phase‐dependent manner. We found spectrum broad both but with little interspecific overlap. There was no evidence systematic shifts metrics between phases cycle either species. While species' composition moderately seasons, changes were small compared other sources variation—especially differences individuals. Thus, variation attributed marginal relative overall flexibility. Based on general consumer‐resource theory, we suggest overlap render it unlikely generate synchronous propose determining dietary niche width should step scientific inquiries about role populations.

Language: Английский

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Geographical Variation of Diet Composition of Cervus nippon kopschi in Jiangxi, China Based on DNA Metabarcoding

Animals, Journal Year: 2025, Volume and Issue: 15(7), P. 940 - 940

Published: March 25, 2025

Food resources are the fundamental basis for survival and reproduction of animals. Diet research is foundation understanding their ecological habits great significance evaluating status carrying out effective protection management. South China sika deer (Cervus nippon kopschi) most endangered subspecies wild in China, with a small population shrinking distribution area. Here, we used DNA metabarcoding technology to study diet composition C. n. kopschi Taohongling Sika Deer National Nature Reserve Jiangxi, China. Comparative analysis among different areas (A-E) was conducted, as well hortulorum raised same areas. We found that dominant families were Rosaceae (46.73% relative abundance), Anacardiaceae (6.02%), Poaceae (5.54%), Fabaceae (3.92%), Rubus (45.43%) being absolute genus. Thirty-two preferred plant species identified kopschi. The highest abundance (45%) reflexus. family genus (33.89%) Pueraria (32.87%), respectively. Of 15 species, montana (33%). richness, diversity, evenness Area B all areas, significant differences compared Areas C, D, E. A did not differ significantly from those other Principal coordinate (PCoA) nonmetric multidimensional scaling (NMDS) both indicated separation hortulorum, while showed This elaborates on information can provide reference improvement habitat deer.

Language: Английский

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The associations of maternal and children’s gut microbiota with the development of atopic dermatitis for children aged 2 years

Frontiers in Immunology, Journal Year: 2022, Volume and Issue: 13

Published: Nov. 17, 2022

Background It is critical to investigate the underlying pathophysiological mechanisms in development of atopic dermatitis. The microbiota hypothesis suggested that allergic diseases may be attributed gut mother-offspring pairs. purpose this study was relationship among maternal-offspring and subsequent dermatitis infants toddlers at 2 years old. Methods A total 36 pairs were enrolled followed up postpartum central China. Demographic information stool samples collected perinatally from pregnant mothers again their respective offspring following time intervals: birth, 6 months, 1 year years. Stool sequenced with 16S Illumina MiSeq platform. Logistic regression analysis used explore differences between group control group. Results Our results showed had higher abundance Candidatus_Stoquefichus Pseudomonas pregnancy Eubacterium_xylanophilum_group Ruminococcus_gauvreauii_group UCG-002 years, lower Gemella Veillonella Additionally, demonstrated a Prevotella compared group, although no statistical difference found analysis. Conclusion support status appears associated pediatric

Language: Английский

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Increased availability of preferred food and decreased foraging costs from degraded grasslands lead to rodent pests in the Qinghai-Tibet Plateau

Frontiers in Ecology and Evolution, Journal Year: 2022, Volume and Issue: 10

Published: Sept. 8, 2022

The increased population density of rodent species during ongoing grassland degradation further deteriorates its conditions. Understanding the effects on feeding habits is great value for optimizing management strategies. In this study, lightly degraded (LD), moderately (MD), severely (SD), and reseeded (RG) were selected their plant resources soil physical properties investigated. addition, study used ITS2 barcode combined with Illumina MiSeq sequencing method to analyze food composition proportion plateau zokors in different results showed that, degradation, biomass decreased, but relative forbs (LD: 32.05 ± 3.89%; MD: 28.97 2.78%; SD: 49.16 4.67% RG: 10.93 1.53%). Forbs main zokor, accounting more than 90% diet, animal had a clear preference Potentilla species; compaction decreasing trend 10–25 cm layer, suggesting decreased foraging cost. Nutritional analysis that stomach content crude protein MD was significantly higher animals other types. Structural equation modeling significant ( P < 0.05) extremely 0.001) impacts zokors, direct impact contribution rates 0.20 0.63. As severity increased, although aboveground underground plants preferred by zokor corresponding changes environment resulted energy expenditure, thereby increasing suitability zokor. Compared grassland, diversity evenness niche width enlarged, weeds RG, which difficulty obtaining food. Reseeding therefore an effective way control zokors.

Language: Английский

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Diets of Rodents Revealed through DNA Metabarcoding

Mammal Study, Journal Year: 2024, Volume and Issue: 50(1)

Published: Dec. 6, 2024

Rodents are the most abundant mammals on Earth, prevalent all continents except Antarctica, and they fulfill important ecological roles in various ecosystems. Recent progress high-throughput DNA-sequencing technology has enabled identification of diet components environmental samples, such as feces or stomach contents, through DNA metabarcoding. Studies using this method have begun to clarify diets small, nocturnal, elusive rodents. This review summarizes previous studies that used metabarcoding native exotic species Rodentia understand unresolved problems analyses. Furthermore, methodology dietary rodents is discussed, together with issues should be taken into consideration. Finally, future perspectives directions considered use discussed. Received 30 March 2024. Accepted 22 August 2024

Language: Английский

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Assembling and dietary application of a local trnL metabarcoding database for Cervus nippon kopschi in Taohongling Nature Reserve

Biodiversity Data Journal, Journal Year: 2024, Volume and Issue: 12

Published: Nov. 21, 2024

The quality and completeness of the reference database have a direct impact on accuracy forage plant identification, thereby influencing level conservation management wildlife resources. In our research, target amplification was subjected to first-generation sequencing assemble local using chloroplast trnL metabarcoding. We found that primers c-h outperformed g-h as universal DNA metabarcoding 162 valid choloroplast sequences were submitted (GenBank ID: PP081756 - PP081917), which exhibited an obvious preference for A T nucleotides (60.49%). haplotype diversity (

Language: Английский

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