Diet and Environment Shape Fecal Bacterial Microbiota Composition and Enteric Pathogen Load of Grizzly Bears

Schwab, Clarissa; Cristescu, Bogdan; Northrup, Joseph M.; Stenhouse, Gordon B.; Gänzle, Michael G.

doi:10.1371/journal.pone.0027905

Cited by 64 publications

(57 citation statements)

References 30 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This interdependence shapes likely the gut bacterial communities in fish. The diet and the environment affect the intestinal microbiota of fish and mammals [2,8,13,47], but the same environment in the present study did not result in similar intestinal bacteria, suggesting that the specific endogenous factors outweighed by far the environmental factors to mould the composition of microbiota. The species-specific selective pressures in fish gut may be related to the genetic features of the host that govern behaviour and metabolism.…”

Section: −3contrasting

confidence: 53%

“…Both Clostridium XlVa and XlVb are versatile in their ability to utilise various polysaccharides, such as cellulose, xylan and hemicelluloses, which constitute the major part of vegetalfibres [45,46]. By contrast, members of the genera Clostridium sensu stricto (cluster I) and Clostridium XI include not only species with saccharolytic and fibre-fermenting activities but also proteolytic species [47,48]. Proteocatella includes fermentative proteolytic bacteria that are able to use various products of proteolysis as substrates but not sugars [49].…”

Section: −3mentioning

confidence: 99%

See 1 more Smart Citation

Comparative Analysis of the Intestinal Bacterial Communities in Different Species of Carp by Pyrosequencing

et al. 2014

View full text Add to dashboard Cite

Gut microbiota is increasingly regarded as an integral component of the host, due to important roles in the modulation of the immune system, the proliferation of the intestinal epithelium and the regulation of the dietary energy intake. Understanding the factors that influence the composition of these microbial communities is essential to health management, and the application to aquatic animals still requires basic investigation. In this study, we compared the bacterial communities harboured in the intestines and in the rearing water of grass carp (Ctenopharyngodon idellus), crucian carp (Carassius cuvieri), and bighead carp (Hypophthalmichthys nobilis), by using 454-pyrosequencing with barcoded primers targeting the V4 to V5 regions of the bacterial 16S rRNA gene. The specimens of the three species were cohabiting in the same pond. Between 6,218 and 10,220 effective sequences were read from each sample, resulting in a total of 110,398 sequences for 13 samples from gut microbiota and pond water. In general, the microbial communities of the three carps were dominated by Fusobacteria, Firmicutes, Proteobacteria and Bacteroidetes, but the abundance of each phylum was significantly different between species. At the genus level, the overwhelming group was Cetobacterium (97.29±0.46 %) in crucian carp, while its abundance averaged c. 40 and 60 % of the sequences read in the other two species. There was higher microbial diversity in the gut of filterfeeding bighead carp than the gut of the two other species, with grazing feeding habits. The composition of intestine microbiota of grass carp and crucian carp shared higher similarity when compared with bighead carp. The principal coordinates analysis (PCoA) with the weighted UniFrac distance and the heatmap analysis suggested that gut microbiota was not a simple reflection of the microbial community in the local habitat but resulted from species-specific selective pressures, possibly dependent on behavioural, immune and metabolic characteristics.

show abstract

Section: −3contrasting

confidence: 53%

Section: −3mentioning

confidence: 99%

Comparative Analysis of the Intestinal Bacterial Communities in Different Species of Carp by Pyrosequencing

et al. 2014

View full text Add to dashboard Cite

show abstract

“…Even in insects, gut microflora has been implicated in adaptation to crop rotation (Chu et al., 2013) and novel food sources (Otani et al., 2014). A large number of studies on various captive animals have revealed that perturbations in the diet result in significant changes in the gut microflora communities (e.g., parrots, Xenoulis et al., 2010; grizzly bears, Schwab et al., 2011; black howler monkeys, Nakamura et al., 2011; and elephant seals and leopard seals, Nelson, Rogers, Carlini, & Brown, 2013). …”

Section: Discussionmentioning

confidence: 99%

Gut microflora may facilitate adaptation to anthropic habitat: A comparative study in Rattus

Varudkar

Ramakrishnan

2018

Ecology and Evolution

View full text Add to dashboard Cite

Anthropophilic species (“commensal” species) that are completely dependent upon anthropic habitats experience different selective pressures particularly in terms of food than their noncommensal counterparts. Using a next‐generation sequencing approach, we characterized and compared the gut microflora community of 53 commensal Rattus rattus and 59 noncommensal Rattus satarae captured in 10 locations in the Western Ghats, India. We observed that, while species identity was important in characterizing the microflora communities of the two Rattus hosts, environmental factors also had a significant effect. While there was significant geographic variation in the microflora of the noncommensal R. satarae, there was no effect of geographic distance on gut microflora of the commensal R. rattus. Interestingly, host genetic distance did not significantly influence the community in either Rattus hosts. Collectively, these results indicate that a shift in habitat is likely to result in a change in the gut microflora community and imply that the gut microflora is a complex trait, influenced by various parameters in different habitats.

show abstract

“…The diet and the environment affect the intestinal microbiota of fish and mammals [33, 34]. In the present study, individuals of each species harbored not really similar intestinal bacterial communities, and gut bacterial communities among the four species were also not absolutely different, suggesting that the common bacterial communities in Antarctic fish intestinal tract might contribute to the fish survival ability in extreme Antarctic environment, while the different bacterial communities might be related to the living habits such as diet, depth, and location.…”

Section: Discussionmentioning

confidence: 99%

The Gut Microbial Community of Antarctic Fish Detected by 16S rRNA Gene Sequence Analysis

Song

Huang

et al. 2016

BioMed Research International

View full text Add to dashboard Cite

Intestinal bacterial communities are highly relevant to the digestion, nutrition, growth, reproduction, and a range of fitness in fish, but little is known about the gut microbial community in Antarctic fish. In this study, the composition of intestinal microbial community in four species of Antarctic fish was detected based on 16S rRNA gene sequencing. As a result, 1 004 639 sequences were obtained from 13 samples identified into 36 phyla and 804 genera, in which Proteobacteria, Actinobacteria, Firmicutes, Thermi, and Bacteroidetes were the dominant phyla, and Rhodococcus, Thermus, Acinetobacter, Propionibacterium, Streptococcus, and Mycoplasma were the dominant genera. The number of common OTUs (operational taxonomic units) varied from 346 to 768, while unique OTUs varied from 84 to 694 in the four species of Antarctic fish. Moreover, intestinal bacterial communities in individuals of each species were not really similar, and those in the four species were not absolutely different, suggesting that bacterial communities might influence the physiological characteristics of Antarctic fish, and the common bacterial communities might contribute to the fish survival ability in extreme Antarctic environment, while the different ones were related to the living habits. All of these results could offer certain information for the future study of Antarctic fish physiological characteristics.

show abstract

Diet and Environment Shape Fecal Bacterial Microbiota Composition and Enteric Pathogen Load of Grizzly Bears

Cited by 64 publications

References 30 publications

Comparative Analysis of the Intestinal Bacterial Communities in Different Species of Carp by Pyrosequencing

Comparative Analysis of the Intestinal Bacterial Communities in Different Species of Carp by Pyrosequencing

Gut microflora may facilitate adaptation to anthropic habitat: A comparative study in Rattus

The Gut Microbial Community of Antarctic Fish Detected by 16S rRNA Gene Sequence Analysis

Contact Info

Product

Resources

About