Climate change alters the haemolymph microbiome of oysters

Scanes, Elliot; Parker, Laura M.; Seymour, Justin R.; Siboni, Nachshon; King, William L.; Danckert, Nathan; Wegner, K. Mathias; Dove, Michael; O’Connor, Wayne A.; Ross, Philip E.

doi:10.1016/j.marpolbul.2021.111991

Cited by 42 publications

(43 citation statements)

References 65 publications

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“…This may be because oyster hosts were allocating more energy towards regulating their EPF and not enough energy towards their immune response which can maintain a healthy microbiome. This is consistent with previous literature showing that exposure to elevated pCO 2 can increase the richness of oyster-associated microbiomes (Scanes et al 2021) and demonstrated that reduced ability of animals to regulate their microbial communities can result in highly variable and speciesrich microbiomes (Foster et al 2017;Zaneveld et al 2017).…”

Section: Oyster Gill Microbes Linked To Oyster Physiological Responsesupporting

confidence: 93%

Ocean acidification alters the diversity and structure of oyster associated microbial communities

Unzueta-Martínez

Downey-Wall

Cameron

et al. 2021

Limnol Oceanogr Letters

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Understanding microbial responses to environmental disturbances is critical. However, in host-associated microbial communities, it is unclear whether microbial response to disturbance is linked to the environment, or if it is mediated via host response. We used Eastern oysters as a model to demonstrate that both environment-and host-linked factors influence the composition and structure of gill microbial communities exposed to ocean acidification. Remarkably, members of the microbiome linked directly to elevated pCO 2 were different from those linked to the host's physiological response. Disentangling the microbial community's response to environmental disturbance from its response to the host's reaction to that disturbance is essential to understand and predict the effect of global change drivers on host-associated microbial communities.

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Section: Oyster Gill Microbes Linked To Oyster Physiological Responsesupporting

confidence: 93%

Ocean acidification alters the diversity and structure of oyster associated microbial communities

Unzueta-Martínez

Downey-Wall

Cameron

et al. 2021

Limnol Oceanogr Letters

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“…Water temperature seems to be a major driver and strongly influences the composition of oyster microbiota both in the haemolymph [8**,33] and other tissues [19*], and only a small fraction of the microbial species persist as a 'core' community throughout the different seasons. Accordingly, climate change was observed to alter the microbiome of the Sydney rock oyster S. glomerata [39]. Warmer temperatures are also favoring the proliferation of potential pathogenic bacteria (e.g.…”

Section: Environmental Factors Modifying Bivalve Microbiotamentioning

confidence: 99%

Recent advances in bivalve-microbiota interactions for disease prevention in aquaculture

Paillard

Gueguen

Wegner

et al. 2022

Current Opinion in Biotechnology

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HAL is a multi-disciplinary open access archive for the deposit and dissemination of scientific research documents, whether they are published or not. The documents may come from teaching and research institutions in France or abroad, or from public or private research centers. L'archive ouverte pluridisciplinaire HAL, est destinée au dépôt et à la diffusion de documents scientifiques de niveau recherche, publiés ou non, émanant des établissements d'enseignement et de recherche français ou étrangers, des laboratoires publics ou privés.

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“…2 ). This is particularly notable given that spirochaete ASVs are emerging as a ubiquitous feature of oyster microbiomes 11 , 22 , yet the nature of the relationship between these bacteria and the oyster host is yet to be determined. Microbiomes play a vital role in the health and survival of their host 1 .…”

Section: Resultsmentioning

confidence: 99%

“…The microbiome of oysters and other bivalves can be altered by ocean warming and acidification 11 – 13 , with shifts in the microbiome dependent on host genotype 12 , 14 . Host processes are, therefore, likely to drive changes in the microbiome in response to climate change, yet it remains unknown which host processes are responsible.…”

Section: Introductionmentioning

confidence: 99%

Microbiomes of an oyster are shaped by metabolism and environment

Scanes

Parker

Seymour

et al. 2021

Sci Rep

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Microbiomes can both influence and be influenced by metabolism, but this relationship remains unexplored for invertebrates. We examined the relationship between microbiome and metabolism in response to climate change using oysters as a model marine invertebrate. Oysters form economies and ecosystems across the globe, yet are vulnerable to climate change. Nine genetic lineages of the oyster Saccostrea glomerata were exposed to ambient and elevated temperature and PCO2 treatments. The metabolic rate (MR) and metabolic by-products of extracellular pH and CO2 were measured. The oyster-associated bacterial community in haemolymph was characterised using 16 s rRNA gene sequencing. We found a significant negative relationship between MR and bacterial richness. Bacterial community composition was also significantly influenced by MR, extracellular CO2 and extracellular pH. The effects of extracellular CO2 depended on genotype, and the effects of extracellular pH depended on CO2 and temperature treatments. Changes in MR aligned with a shift in the relative abundance of 152 Amplicon Sequencing Variants (ASVs), with 113 negatively correlated with MR. Some spirochaete ASVs showed positive relationships with MR. We have identified a clear relationship between host metabolism and the microbiome in oysters. Altering this relationship will likely have consequences for the 12 billion USD oyster economy.

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Climate change alters the haemolymph microbiome of oysters

Cited by 42 publications

References 65 publications

Ocean acidification alters the diversity and structure of oyster associated microbial communities

Ocean acidification alters the diversity and structure of oyster associated microbial communities

Recent advances in bivalve-microbiota interactions for disease prevention in aquaculture

Microbiomes of an oyster are shaped by metabolism and environment

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