Role of microbiocenosis of the gastrointestinal tract in the nutrition of grouse

Vecherskii, M. V.; Кузнецова, Т. А.; Костина, Н. В.; Горленко, М. В.; Golichenkov, M. V.; Умаров, М. М.; Naumova, E. I.

doi:10.1134/s1062359014030108

Cited by 7 publications

(4 citation statements)

References 6 publications

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“…The current study is the first to assess the gut microbiota of hornbills and toucans. Firmicutes and Proteobacteria were the dominant phyla in the gut microbiotas of the three omnivorous species examined in this study, which corroborated with the previous studies on the gut microbiotas of omnivorous birds (Ding et al, ; Grond, Ryu, Baker, Domingo, & Buehler, ; Hird, Carstens, Cardiff, Dittmann, & Brumfield, ; Risely, Waite, Ujvari, Hoye, & Klaassen, ; Vecherskii et al, ). Furthermore, the Firmicutes and Proteobacteria were also found to be the most abundant bacterial phyla in the gut of other carnivorous birds (such as the Accipitridae vultures (Roggenbuck et al, ) and Spheniscidae penguins (Dewar et al, )) and herbivorous birds (such as Anatidae geese (Wang et al, ) and Psittacidae Parrot (Waite, Eason, & Taylor, )).…”

Section: Discussionsupporting

confidence: 92%

Comparative analysis of the gut microbiota of hornbill and toucan in captivity

et al. 2018

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Gut microbiota plays an important role in animals and are considered microbial organs. Hornbill and toucan are birds of the same ecotypes with high appreciative value. In this study, we characterized and compared the gut microbiota of toco toucan ( Ramphastos toco ), great hornbill ( Buceros bicornis ) and wreathed hornbill ( Rhyticeros undulatus ) using 16S rRNA high‐throughput sequencing technology, and further discussed the influence of host bird genetics on its gut microbiota. We identified 10,847 operational taxonomic units (OTUs) from the hyper‐variable V4–V5 region, representing 14 phyla that were dominated by the Firmicutes, Proteobacteria, Cyanobacteria, Fusobacteria, Actinobacteria, and Bacteroidetes. Alpha diversity indices showed no significant difference among the three species ( p > 0.1). However, great hornbill and toco toucan shared a high number of OTUs. Principal component analysis also revealed highly similar gut microbiotas between the two distant species. Therefore, environmental factors might dominate over host genetics in shaping the gut microbiotas of hornbill and toucan. Our study would contribute in elucidating adaptation of the hornbill and toucan to environmental change.

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Section: Discussionsupporting

confidence: 92%

Comparative analysis of the gut microbiota of hornbill and toucan in captivity

et al. 2018

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“…Nitrogen-fixing bacteria belonging to Gammaproteobacteria and Alphaproteobacteria were reported before in termites [ 40 ] and Amazonian catfish ( Panaque nigrolineatus ) [ 41 ]. Nitrogenase activity has been reported in herbivorous grouses [ 42 ]. In this study, LEfSe analyses show Gammaproteobacteria (Enterobacteriaceae family) predominance in upper and lower intestines of frugivores and this might be associated with nitrogen-fixing bacteria; however more studies are necessary to demonstrate their presence.…”

Section: Discussionmentioning

confidence: 99%

Comparison of gizzard and intestinal microbiota of wild neotropical birds

et al. 2018

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Gut bacterial communities have been shown to be influenced by diet, host phylogeny and anatomy, but most of these studies have been done in captive animals. Here we compare the bacterial communities in the digestive tract of wild birds. We characterized the gizzard and intestinal microbiota among 8 wild Neotropical bird species, granivorous or frugivorous species of the orders Columbiformes and Passeriformes. We sequenced the V4 region of the 16S rRNA gene in 94 collected samples from 32 wild birds from 5 localities, and compared bacterial communities by foraging guild, organ, locality and bird taxonomy. 16S rRNA gene-based sequencing data were examined using QIIME with linear discriminant analysis effect size (LEfSe) and metabolic pathways were predicted using PICRUSt algorism. We identified 8 bacterial phyla, dominated by Firmicutes, Actinobacteria and Proteobacteria. Beta diversity analyses indicated significant separation of gut communities by bird orders (Columbiformes vs. Passerifomes) and between bird species (p<0.01). In lower intestine, PICRUSt shows a predominance of carbohydrate metabolism in granivorous birds and xenobiotics biodegradation pathways in frugivorous birds. Gizzard microbiota was significantly richer in granivorous, in relation to frugivorous birds (Chao 1; non-parametric t-test, p<0.05), suggesting a microbial gizzard function, beyond grinding food. The results suggest that the most important factor separating the bacterial community structure was bird taxonomy, followed by foraging guild. However, variation between localities is also likely to be important, but this could not been assessed with our study design.

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“…Most likely, polar bears are not able to assimilate plant and invertebrate polymers either by digestion or fermentation. This is also supported by the morphology of their digestive system, which does not include blind appendices and voluminous chambers, as in fermentative marine [ 33 , 36 ] and terrestrial animals [ 37 ].…”

Section: Discussionmentioning

confidence: 99%

Anthropogenic Neighborhood Impact on Bacterial and Fungal Communities in Polar Bear Feces

Vecherskii,

Kuznetsova,

Khayrullin

et al. 2023

Animals

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Climate changes cause a dramatical increase in the ice-free season in the Arctic, forcing polar bears ashore, closer to human settlements associated with new and non-natural food objects. Such a diet may crucially transform the intestinal microbiome and metabolism of polar bears. The aim of this study was to characterize changes in the gut bacterial and fungal communities resulting from the transition to anthropogenic food objects by the means of 16S and ITS metabarcoding. Thus, rectal samples from 16 wild polar bears from the Kara–Barents subpopulation were studied. Human waste consuming resulted in a significant increase in the relative abundance of fermentative bacteria (Lactobacillaceae, Leuconostocaceae, and Streptococcaceae) and a decrease in proteolytic Enterobacteriaceae. However, the alpha-diversity parameters remained similar. Also, for the first time, the composition of the fungal community of the polar bear intestine was determined. Diet change is associated with the displacement of eurybiontic fungi (Thelebolus, Dipodascus, Candida (sake), and Geotrichum) by opportunistic Candida (tropicalis), Kazachstania, and Trichosporon. Feeding on human waste does not cause any signs of dysbiosis and probably leads to adaptive changes in the bacterial microbiome. However, the emergence of fungal facultative pathogens increases the risk of infections.

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Role of microbiocenosis of the gastrointestinal tract in the nutrition of grouse

Cited by 7 publications

References 6 publications

Comparative analysis of the gut microbiota of hornbill and toucan in captivity

Comparative analysis of the gut microbiota of hornbill and toucan in captivity

Comparison of gizzard and intestinal microbiota of wild neotropical birds

Anthropogenic Neighborhood Impact on Bacterial and Fungal Communities in Polar Bear Feces

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