The Patagonian toothfish Dissostichus eleginoides is one of the most important fisheries from the Southern Ocean. The biology of this species is relatively well studied and some nutritionals issues have also been reported; however there is no information about the composition of the bacterial community of the gastrointestinal tract, which is essential to characterize the microbiota of this fish. The bacterial flora of D. eleginoides is here described for the first time using culturable methods. By applying

Urtubia, Rocío; Gallardo, Pablo; Cárdenas, César; Lavín, Paris; González-Aravena, Marcelo

doi:10.4067/s0718-19572017000200019

Cited by 6 publications

(5 citation statements)

References 5 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Urtubia et al [16], using culture-dependent techniques, reported that Vibrio spp. and Psychrobacter spp.…”

Section: Discussionmentioning

confidence: 99%

“…On the other hand, although the parasitic fauna of D. eleginoides has been more studied, the background on specimens captured in Chilean waters is also scarce and they go back more than a decade ago. This data accounts for the presence of 11 parasitic taxa, exclusively gastrointestinal, in specimens captured in the south-central zone of Chile [16][17][18][19][20][21][22].…”

Section: Introductionmentioning

confidence: 98%

See 1 more Smart Citation

Gastrointestinal Microbiota and Parasite-Fauna of Wild Dissostichus eleginoides Smitt, 1898 Captured at the South-Central Coast of Chile

et al. 2021

View full text Add to dashboard Cite

Dissotichus eleginoides has a discontinuous circumpolar geographic distribution restricted to mountains and platforms, mainly in Subantarctic and Antarctic waters of the southern hemisphere, including the Southeast Pacific, Atlantic and Indian oceans and in areas surrounding the peninsular platforms of subantarctic islands. The aim of this work was to determine and characterize the gastrointestinal parasitic and microbial fauna of specimens of D. eleginoides captured in waters of the south-central zone of Chile. The magnitude of parasitism in D. eleginoides captured in waters of the south-central zone of Chile is variable, and the parasite richness is different from that reported in specimens from subantarctic environments. Next-generation sequencing (NGS) of the microbial community associated to intestine showed a high diversity, where Proteobacteria, Firmicutes, and Bacteriodetes were the dominant phyla. However, both parasitic and microbial structures can vary between fish from different geographic regions

show abstract

“…Urtubia et al [16], using culture-dependent techniques, reported that Vibrio spp. and Psychrobacter spp.…”

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 98%

Gastrointestinal Microbiota and Parasite-Fauna of Wild Dissostichus eleginoides Smitt, 1898 Captured at the South-Central Coast of Chile

et al. 2021

View full text Add to dashboard Cite

show abstract

“…The fish fauna of the Southern Ocean (SO) is dominated by the perciform suborder Notothenioidei (teleost fishes), which constitute 90% of the fish biomass and up to 77% of the species diversity of the Antarctic continental shelf (35,36). To date, the microbial communities associated to the notothenioids have received very little attention, and has been mainly characterized through cultural-dependent methods (37)(38)(39). The gut microbiome of only two species from West Antarctic Peninsula, Notothenia coriiceps and Chaenocephalus aceratus, has been analyzed through 16S rRNA gene-based clone libraries, revealing a low poor microbial richness and a strong dominance of the family Vibrionaceae represented by Vibrio and Photobacterium genera (35).…”

Section: Detecting Robust Phylosymbiosis and Co-phylogeny Signals In ...mentioning

confidence: 99%

“…Interestingly, the most abundant and prevalent taxon of the core GMM exhibited a significant co-phylogenetic pattern. This taxon belonged to the Aliivibrio genus, which has been identified by the past as a major component of the gut microbiome of notothenioid fishes (35,37), and frequently associated with other fish species such as the European seabass and Atlantic salmon (89,90). While there is no direct evidence of its ecological role in the fish holobiont, some authors suggest that Aliivibrio would be commensals, able to readily colonize the fish intestines (37,91) and form biofilm onto intestine mucosa surface (92)(93)(94).…”

Section: Around Half Of the Core Bacterial Taxa Harbored Strong Signa...mentioning

confidence: 99%

“…This taxon belonged to the Aliivibrio genus, which has been identified by the past as a major component of the gut microbiome of notothenioid fishes (35,37), and frequently associated with other fish species such as the European seabass and Atlantic salmon (89,90). While there is no direct evidence of its ecological role in the fish holobiont, some authors suggest that Aliivibrio would be commensals, able to readily colonize the fish intestines (37,91) and form biofilm onto intestine mucosa surface (92)(93)(94). This commensalism would be mediated by the capacity of Aliivibrio to degrade chitin, a highly conserved metabolism in the Vibrionaceae family, as confirmed by the detection of chitinase activity in Aliivibrio strains (95).…”

Section: Around Half Of the Core Bacterial Taxa Harbored Strong Signa...mentioning

confidence: 99%

See 1 more Smart Citation

Unveiling the co-phylogeny signal between plunderfishHarpagiferspp. and their gut microbiomes across the Southern Ocean

Schwob

Cabrol

Saucède

et al. 2023

Preprint

View full text Add to dashboard Cite

Understanding the factors that sculpt fish gut microbiome is challenging, especially in natural populations characterized by high environmental and host genomic complexity. Yet, closely related hosts are valuable models for deciphering the contribution of host evolutionary history to microbiome assembly, through the underscoring of phylosymbiosis and co-phylogeny patterns. Here, we hypothesized that the recent allopatric speciation ofHarpagiferacross the Southern Ocean (1.2–0.8 Myr) will promote the detection of robust phylogenetic congruence between the host and its microbiome.We characterized the gut mucosa microbiome of 77 individuals from four field-collected species of the plunderfishHarpagifer(Teleostei, Notothenioidei), distributed across three biogeographic regions of the Southern Ocean. We found that seawater physicochemical properties, host phylogeny and geography collectively explained 35% of the variation in bacterial community composition inHarpagifergut mucosa. The core microbiome ofHarpagiferspp. gut mucosa was characterized by a low diversity, mostly driven by selective processes, and dominated by a singleAliivibriotaxon detected in more than 80% of the individuals. Almost half of the core microbiome taxa, includingAliivibrio, harbored co-phylogeny signal at microdiversity resolution withHarpagiferphylogeny. This suggests an intimate symbiotic relationship and a shared evolutionary history withHarpagifer.The robust phylosymbiosis signal emphasizes the relevance of theHarpagifermodel to understanding the contribution of fish evolutionary history to the gut microbiome assembly. We propose that the recent allopatric speciation ofHarpagiferacross the Southern Ocean may have generated the diversification ofAliivibriointo patterns recapitulating the host phylogeny.ImportanceAlthough challenging to detect in wild populations, phylogenetic congruence between marine fish and its microbiome is critical, as it allows highlighting potential intimate associations between the hosts and ecologically relevant microbial symbionts.Through a natural system consisting of closely related fish species of the Southern Ocean, our study provides foundational information about the contribution of host evolutionary trajectory on gut microbiome assembly, that represents an important yet underappreciated driver of the global marine fish holobiont. Notably, we unveiled striking evidence of co-diversification betweenHarpagiferand its microbiome, demonstrating both phylosymbiosis of gut bacterial communities, and co-phylogeny of specific bacterial symbionts, in patterns that mirror the host diversification. Considering the increasing threats that fish species are facing in the Southern Ocean, understanding how the host evolutionary history could drive its microbial symbiont diversification represents a major challenge to better predict the consequences of environmental disturbances on microbiome and host fitness.

show abstract

Characterization of the microbiota of commercially traded finfish fillets

Shehata

Mitterboeck

Hanner

2020

Food Research International

View full text Add to dashboard Cite

Cited by 6 publications

References 5 publications

Gastrointestinal Microbiota and Parasite-Fauna of Wild Dissostichus eleginoides Smitt, 1898 Captured at the South-Central Coast of Chile

Gastrointestinal Microbiota and Parasite-Fauna of Wild Dissostichus eleginoides Smitt, 1898 Captured at the South-Central Coast of Chile

Unveiling the co-phylogeny signal between plunderfishHarpagiferspp. and their gut microbiomes across the Southern Ocean

Characterization of the microbiota of commercially traded finfish fillets

Contact Info

Product

Resources

About