Spring diet and energy intake of whooper swans (Cygnus cygnus) at the Yellow River National Wetland in Baotou, China

Liu, Li; Liu, Xiaoguang; Du, Chao; Fang, Haitao; Zhang, Jiyun; Li, Wenjing; Cao, Litong; Gao, Li

doi:10.1371/journal.pone.0264528

Cited by 3 publications

(2 citation statements)

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“…Both host species and diet have been suggested to be potential drivers modulating the gut microbial composition of wild animals ( Xiao et al, 2021 ). The Yellow River National Wetland in Baotou, China, is an indispensable feeding station for migratory birds between the East Asian-Australian and Central Asian flyways ( Liu et al, 2022 ). Thus, we selected wild birds to study the differences in the composition of the gut microbiota.…”

Section: Discussionmentioning

confidence: 99%

A comprehensive comparison of fecal microbiota in three ecological bird groups of raptors, waders, and waterfowl

et al. 2022

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Gut microbiota plays a vital role in maintaining the health and immunity of wild birds. However, less is known about the comparison of fecal microbiota between different ecological groups of wild birds, particularly in the Yellow River National Wetland in Baotou, China, an important transit point for birds migrating all over the East Asia-Australian and Central Asian flyways. In this study, we characterized the fecal microbiota and potential microbial function in nine bird species of raptors, waders, and waterfowl using 16S rRNA gene amplicon sequencing to reveal the microbiota differences and interaction patterns. The results indicated that there was no significant difference in α-diversity, but a significant difference in β-diversity between the three groups of birds. The fecal bacterial microbiota was dominated by Firmicutes, Proteobacteria, Actinobacteria, and Bacteroidetes in all groups of birds. Furthermore, we identified five bacterial genera that were significantly higher in raptors, five genera that were significantly higher in waders, and two genera that were more abundant in waterfowl. The bacterial co-occurrence network results revealed 15 and 26 key genera in raptors and waterfowls, respectively. The microbial network in waterfowl exhibited a stronger correlation pattern than that in raptors. PICRUSt2 predictions indicated that fecal bacterial function was significantly enriched in the antibiotic biosynthesis pathway in all three groups. Metabolic pathways related to cell motility (bacterial chemotaxis and flagellar assembly) were significantly more abundant in raptors than in waders, whereas waders were enriched in lipid metabolism (synthesis and degradation of ketone bodies and fatty acid biosynthesis). The fecal microbiota in waterfowl harbored more abundant vitamin B6 metabolism, RNA polymerase, and tyrosine and tryptophan biosynthesis. This comparative study revealed the microbial community structure, microbial co-occurrence patterns, and potential functions, providing a better understanding of the ecology and conservation of wild birds. Future studies may focus on unraveling metagenomic functions and dynamics along with the migration routine or different seasons by metagenomics or metatranscriptomics.

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Section: Discussionmentioning

confidence: 99%

A comprehensive comparison of fecal microbiota in three ecological bird groups of raptors, waders, and waterfowl

et al. 2022

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“…Fecal samples were collected from the resting places of the demoiselle and common cranes during the autumn migration period and the wintering period from October to December 2021. Based on previous research, the habitat of a large population of over 200 cranes was selected as the sampling site (Liu et al, 2022b ). After the birds left the habitat, a large amount of fresh feces remained.…”

Section: Methodsmentioning

confidence: 99%

Comparative analysis of the gut bacteria and fungi in migratory demoiselle cranes (Grus virgo) and common cranes (Grus grus) in the Yellow River Wetland, China

Li,

Duan,

Wang

et al. 2024

Front. Microbiol.

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IntroductionGut microbiota are closely related to the nutrition, immunity, and metabolism of the host and play important roles in maintaining the normal physiological activities of animals. Cranes are important protected avian species in China, and they are sensitive to changes in the ecological environment and are thus good environmental indicators. There have been no reports examining gut fungi or the correlation between bacteria and fungi in wild Demoiselle cranes (Grus virgo) and Common cranes (Grus grus). Related research can provide a foundation for the protection of rare wild animals.Methods16S rRNA and ITS high-throughput sequencing techniques were used to analyze the gut bacterial and fungal diversity of Common and Demoiselle cranes migrating to the Yellow River wetland in Inner Mongolia.ResultsThe results revealed that for gut bacteria α diversity, Chao1 index in Demoiselle cranes was remarkably higher than that in Common cranes (411.07 ± 79.54 vs. 294.92 ± 22.38), while other index had no remarkably differences. There was no remarkable difference in fungal diversity. There were marked differences in the gut microbial composition between the two crane species. At the phylum level, the highest abundance of bacteria in the Common crane and Demoiselle crane samples was Firmicutes, accounting for 87.84% and 74.29%, respectively. The highest abundance of fungi in the guts of the Common and Demoiselle cranes was Ascomycota, accounting for 69.42% and 57.63%, respectively. At the genus level, the most abundant bacterial genus in the Common crane sample was Turicibacter (38.60%), and the most abundant bacterial genus in the Demoiselle crane sample was Catelicoccus (39.18%). The most abundant fungi in the Common crane sample was Penicillium (6.97%), and the most abundant fungi in the Demoiselle crane sample was Saccharomyces (8.59%). Correlation analysis indicated that there was a significant correlation between gut bacteria and fungi.DiscussionThis study provided a research basis for the protection of cranes. Indeed, a better understanding of the gut microbiota is very important for the conservation and management of wild birds, as it not only helps us to understand their life history and related mechanisms, but also can hinder the spread of pathogenic microorganisms.

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Babesa Sewage Treatment Plant as a vital artificial wetland habitat for a multitude of avian species

Nima,

Mahendra Timsina,

Tenzin Jamtsho

et al. 2023

J. Threat. Taxa

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This study aimed to glean basic ecological aspects on diversity and abundance, temporal variation and guild composition of the birds at Babesa Sewage Treatment Plant (STP). The line transect method was used as the sampling technique from November 2021 to October 2022. A total of 80 species belonging to 58 genera, 29 families, and 11 orders were detected, of which three, namely, River Lapwing Vanellus duvaucelii, Falcated Duck Mareca falcata, and Ferruginous Duck Aythya nyroca, are ‘Near Threatened’ with the remaining being ‘Least Concern’. The highest species richness was recorded in the winter (6.29), the highest species diversity in the spring (2.73), and the highest evenness in the summer (0.76). There was not any statistically significant difference between non-waterbirds and waterbirds, or between feeding guilds. However, based on a permutational multivariate analysis of variance (PERMANOVA), the bird composition was significantly different among seasons. Subsequently, pairwise comparisons revealed a significant difference between autumn & winter (P = 0.006), autumn & summer (P = 0.006), autumn & spring (P = 0.018), winter & summer (P = 0.006), winter & spring (P = 0.006) as well as spring & summer (P = 0.006). The non-metric multidimensional scaling (NMDS) biplot showed most bird species overlap occurred between autumn and spring as well as summer and spring, respectively. Taken together, the present results suggest that the Babesa STP holds significant potential as a habitat for diverse avian populations and underscores the ecological significance of artificial wetlands.

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Spring diet and energy intake of whooper swans (Cygnus cygnus) at the Yellow River National Wetland in Baotou, China

Cited by 3 publications

References 34 publications

A comprehensive comparison of fecal microbiota in three ecological bird groups of raptors, waders, and waterfowl

A comprehensive comparison of fecal microbiota in three ecological bird groups of raptors, waders, and waterfowl

Comparative analysis of the gut bacteria and fungi in migratory demoiselle cranes (Grus virgo) and common cranes (Grus grus) in the Yellow River Wetland, China

Babesa Sewage Treatment Plant as a vital artificial wetland habitat for a multitude of avian species

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