Loading
Amplicon Sequencing · Journal article
International Journal for Parasitology. Parasites and Wildlife · August 3, 2026
Early or partial results. Treat as a signal, not a conclusion.
This is a descriptive molecular survey characterizing gut protist communities in Eurasian beavers using 18S rRNA metabarcoding and targeted pathogen screening. The study identified Blastocystis and trichomonads as dominant commensals in all individuals, detected Cryptosporidium in two beavers, and found geographic location—but not sex—influences microbiota composition, although the small sample size limits generalizability.
Descriptive cross-sectional survey using molecular metabarcoding. Eurasian beavers (Castor fiber); exact number, location, and eligibility criteria not specified in abstract.. Intervention: Metabarcoding of 18S rRNA V4 region and targeted pathogen screening using molecular barcoding; targeted barcoding for Giardia, Cryptosporidium, and Microsporidia. Not stated in abstract.
Two individuals tested positive for Cryptosporidium spp. using targeted barcoding Blastocystis and trichomonads found in every individual sampled Potential existence of a specific beaver Blastocystis subtype identified
Safety was not reported in the material analysed. Check the source before drawing any conclusion about harm.
This survey extends understanding of protist diversity in a wildlife reservoir species implicated in Giardia transmission. The findings are descriptive rather than predictive of clinical risk and do not provide actionable recommendations for beaver or human disease management without larger, comparative studies.
Descriptive metabarcoding study of gut protist diversity in a small sample of wild beavers, identifying community composition and presence of potential pathogens without experimental design, control group, or clinical outcomes.
As stated by the source record.
Quoted from the source exactly as published.
This survey extends understanding of protist diversity in a wildlife reservoir species implicated in Giardia transmission. The findings are descriptive rather than predictive of clinical risk and do not provide actionable recommendations for beaver or human disease management without larger, comparative studies.
Graded across the dimensions that decide whether you should act, each from what the source actually supports. There is no single score, and where a dimension was not assessed it says so.
Gut protists are an important part of the microbial community that is often overlooked or limited to certain "flagship" species, mainly parasites. This also applies to Eurasian beavers (Castor fiber), which act as aquatic engineers in riparian habitats and have been identified as potential reservoirs of the well-known intestinal protist parasite - Giardia intestinalis. In this study, we focus on exploring protistan diversity in Eurasian beavers from freshly collected stool samples using molecular methods, including targeted barcoding of specific parasitic groups (Giardia, Cryptosporidium and Microsporidia) and general metabarcoding of the V4 region of 18S rRNA on the Illumina MiSeq platform. Two individuals were tested positive for Cryptosporidium spp. using the targeted barcoding. The metabarcoding approach revealed that the gut community was predominantly composed of gut commensals, Blastocystis, and trichomonads, found in every individual. More detailed investigation of Blastocystis confirmed the potential existence of a specific beaver subtype. Colpodellids and parasitic Eimeria spp. were only occasionally present. Geographic location of the host, unlike sex, has a significant impact on gut microbiota composition, though more research is needed due to limited sampling. Finally, we tested a new primer set for amplifying the V4 region of 18S rRNA, which shows promise for improving the detection of Metamonada protists in the gut samples.
Taken from the source record, never inferred. Follow any of these and new work involving them reaches your briefing.