Spirochetes in gastropods from Lake Baikal and North American freshwaters: new multi-family, multi-habitat host records

Sitnikova, T. Ya.; Michel, Ellinor; Tulupova, Yulia; Ханаев, И. В.; Парфенова, В. В.; Prozorova, Larisa

doi:10.1007/s13199-012-0167-1

Cited by 11 publications

(9 citation statements)

References 24 publications

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“…Kobeltocochlea martensiana —Starostin, 1926: 19 (distribution); Kozhov, 1928: 95; Kozhov, 1931: 69 (shell size, distribution in Bolshiye Koty on mixed sediments at depths of 2 to 100 m); Shadin, 1933: 148, Figure 130; Kozhov, 1936: 32–33, Table I, Figures 13–15, Table X, Figures 5–9 (morphology, distribution, and key to identification); Kozhov, 1941: 547, Figure 7 (morphology of the nervous system); Kozhov, 1945: 278, Figure 1 (male reproductive organs morphology); Kozhov, 1950: 4–13 (female reproductive system, reproduction, and egg morphology); Shadin, 1952: 240, Figure 173 (general information and key to identification); Poberezhnyi, 1989: 6 (diploid number of chromosomes 2 n = 34); Starobogatov & Sitnikova, 1990: 501, Figure 1 (adaptation to stone substrate in Southern Baikal); Sitnikova, 1995: 78, Figure 9A (general information and key to identification); Röpstorf & Sitnikova, 2000: 192, Figure 3, Photo 5a, b (protoconch morphology); Röpstorf et al, 2003: 169 (stomach contents); Kravtsova et al, 2004: 198, Figure 2M (dominant species in benthic community of underwater slope at a depth of 8 m); Sitnikova et al, 2010: 7 (record from Birkhin Bay); Sitnikova et al, 2012: 105 (records of spirochete microbial community in crystalline style); Koroleva et al, 2015: 301 (structure and length of telomeric DNA); Maximova et al, 2017: 189 (age dynamics of telomere length).…”

Section: Resultsmentioning

confidence: 99%

Discordance of genetic diversification between deep‐ and shallow‐water species of Kobeltocochlea Lindholm, 1909 (Caenogastropoda: Truncatelloidea: Benedictiidae) endemic to Lake Baikal with the description of a new species, review of the genus, and notes on its origin

Sitnikova

Teterina

Maximova

et al. 2021

J Zool Syst Evol Res

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We describe a new species, Kobeltocochlea tamarae Sitnikova, Teterina & Maximova sp. nov., from Lake Baikal discovered in the Saint Petersburg methane seep at a depth of approximately 1400 m. The uncorrected genetic distance was 4.26% of the COI gene between this new species and K. falsipumyla collected from the Academic Ridge at depths between 157 and 163 m. The two shallow-water species, K. martensiana and K. olchonensis, differed in substrate preference and geographic habitats, with a genetic distance of 0.97% for COI. Phylogenetic analysis of mitochondrial (COI, 16S) and nuclear (ITSI, 28S) sequences indicated that Kobeltocochlea was paraphyletic with respect to other benedictiid genera Benedictia and Yaroslawiella, formed well-supported monophyletic groups. We revealed the discordance of morphological and genetic data within Kobeltocochlea and other benedictiids, which reflected their complicated history. The current knowledge of benedictiids does not allow for significant changes in the taxonomy of the Benedictiidae, except for synonymizing K. lindholmiana with K. olchonensis and Pseudobenedictia with Benedictia that were also investigated. We speculate that three main lineages of benedictiids originated from three populations of a single ancient species approximately 3.2 Ma. The speciation of deep-water species was probably driven independently by bathymetric isolation in the cold methane seeps of different geomorphological structures. The diversification of the third lineage consisting of littoral (including K. martensiana/K. olchonensis), deep-water, and eurybathic benedictiids may be explained by rapid adaptive radiation to intralacustrine environments.

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Section: Resultsmentioning

confidence: 99%

Discordance of genetic diversification between deep‐ and shallow‐water species of Kobeltocochlea Lindholm, 1909 (Caenogastropoda: Truncatelloidea: Benedictiidae) endemic to Lake Baikal with the description of a new species, review of the genus, and notes on its origin

Sitnikova

Teterina

Maximova

et al. 2021

J Zool Syst Evol Res

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“…Spirochaetaceae taxa were observed in C. gigas gill samples from the Wadden Sea, Tasmania and New South Wales (NSW), Australia (36)(37)(38)(39). Members of this can cause human disease (e.g., Lyme disease and syphilis), but are also commonly associated with marine animals ranging from gastropods to corals, and provide beneficial host functions including nitrogen and carbon fixation (40)(41)(42)(43). Mycoplasmataceae bacteria were common in DG samples, a pattern observed in above studies and in samples from France (44) and in Olympia oysters (Ostrea lurida) from the Northwest US (45).…”

Section: Oyster and Water Microbiota Are Differentially Influenced By...mentioning

confidence: 99%

Host and Water Microbiota are Differentially Linked to Potential Human Pathogen Accumulation in Oysters

Diner

Zimmer-Faust

Cooksey

et al. 2022

Preprint

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Oysters play an important role in coastal ecology and are a globally popular seafood source. However, their filter feeding lifestyle enables coastal pathogens, toxins, and pollutants to accumulate in their tissues, potentially endangering human health. For example, bacterial pathogens from both marine and terrestrial sources concentrate in oysters and can cause human illness when oysters are consumed raw. While pathogen concentrations in coastal waters are often linked to environmental conditions and runoff events, these do not always correlate with pathogen concentrations in oysters. Additional factors related to oyster hosts and the microbial ecology of pathogenic bacteria likely play a role in accumulation but are poorly understood. In this study, we investigated whether microbial communities in water and oysters were linked to accumulation of fecal indicators, Vibrio parahaemolyticus, and Vibrio vulnificus. Site-specific environmental conditions significantly influenced the composition and diversity of water microbial communities, which were linked to the highest concentrations of both Vibrio spp. and fecal indicator bacteria. Oyster microbial communities, however, were less impacted by environmental variability and exhibited less variability in microbial community diversity and accumulation of target bacteria. Instead, changes in specific microbial taxa in oyster and water samples, particularly in oyster digestive glands, were linked to elevated potential pathogens in oysters, especially V. parahaemolyticus. This included an increase in cyanobacteria in both water and oyster digestive gland microbial communities, which could represent an environmental vector for Vibrio spp. transport and decreased relative abundance of Mycoplasma and other key members of the oyster digestive gland microbiota. These findings suggest that host and microbial factors, in addition to environmental variables, may influence pathogen accumulation in oysters.

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“…Microbes representing these phyla are primarily known as pathogens in a wide range of mammalian hosts [ 93 , 94 ]. Although there is a general lack of information on the function of these bacteria towards inhabited marine and freshwater animals, recent studies suggest that their members are providing benefits rather than causing detriment to their hosts which include snails, oysters and crabs [ 95 , 96 ]. The Fusobacteria phylum was found to compose 4.6% of P. pellucida ’s microbiome and is another lineage of bacteria.…”

Section: Resultsmentioning

confidence: 99%

Metaphylogenomic and Potential Functionality of the Limpet Patella pellucida’s Gastrointestinal Tract Microbiome

Dudek

Adams

Swain

et al. 2014

IJMS

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This study investigated the microbial diversity associated with the digestive tract of the seaweed grazing marine limpet Patella pellucida. Using a modified indirect DNA extraction protocol and performing metagenomic profiling based on specific prokaryotic marker genes, the abundance of bacterial groups was identified from the analyzed metagenome. The members of three significantly abundant phyla of Proteobacteria, Firmicutes and Bacteroidetes were characterized through the literature and their predicted functions towards the host, as well as potential applications in the industrial environment assessed.

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Spirochetes in gastropods from Lake Baikal and North American freshwaters: new multi-family, multi-habitat host records

Cited by 11 publications

References 24 publications

Discordance of genetic diversification between deep‐ and shallow‐water species of Kobeltocochlea Lindholm, 1909 (Caenogastropoda: Truncatelloidea: Benedictiidae) endemic to Lake Baikal with the description of a new species, review of the genus, and notes on its origin

Discordance of genetic diversification between deep‐ and shallow‐water species of Kobeltocochlea Lindholm, 1909 (Caenogastropoda: Truncatelloidea: Benedictiidae) endemic to Lake Baikal with the description of a new species, review of the genus, and notes on its origin

Host and Water Microbiota are Differentially Linked to Potential Human Pathogen Accumulation in Oysters

Metaphylogenomic and Potential Functionality of the Limpet Patella pellucida’s Gastrointestinal Tract Microbiome

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