Ocean acidification and warming effects on the physiology, skeletal properties, and microbiome of the purple-hinge rock scallop

Alma, Lindsay; Kram, Karin E.; Holtgrieve, Gordon W.; Barbarino, Ashley; Fiamengo, Courtney J.; Padilla‐Gamiño, Jacqueline L.

doi:10.1016/j.cbpa.2019.110579

Cited by 39 publications

(16 citation statements)

References 79 publications

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“…Tyrosinases are involved in periostracum synthesis and the increase in expression of their related genes is often considered as a mechanism to limit the damage to the periostracum and the corrosion of the shell in reaction to OA (Hüning et al, 2013). Delamination of the periostracum due to moderate OA was frequently associated with alteration of shell properties such as weakening and thinning (Alma et al, 2020;Auzoux-Bordenave et al, 2019;Bressan et al, 2014;Coleman et al, 2014;Peck et al, 2016Peck et al, , 2018Zhao et al, 2020). Our results agree with the idea that OA is more a dissolution problem than a biomineralization problem (Rajan et al, 2021).…”

Section: Discussionsupporting

confidence: 87%

Revisiting tolerance to ocean acidification: insights from a new framework combining physiological and molecular tipping points of Pacific oyster

Lutier

Poi

Gazeau

et al. 2021

Preprint

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Studies on the impact of ocean acidification on marine organisms involve exposing organisms to future acidification scenarios as projected for open ocean, which has limited relevance for coastal calcifiers. Characterization of reaction norms across a range of pH and identification of tipping points beyond which detrimental effects are observed has been limited and focus on only a few macro-physiological traits. Here we filled this knowledge gap by developing a framework to analyze the broad macro-physiological and molecular responses over a wide pH range of juvenile Pacific oyster, a model species for which the tolerance threshold to acidification remains unknown. We identify low tipping points for physiological traits at pH 7.3-6.9 that coincide with a major reshuffling in membrane lipids and transcriptome. In contrast, shell parameters exhibit effects with pH drop well before tipping points, likely impacting animal fitness. These findings were made possible by the development of an innovative methodology to synthesize and identify the main patterns of variations in large -omic datasets, fit them to pH and identify molecular tipping-points. We propose the application of our framework broadly to the assessment of effects of global change on other organisms.

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Section: Discussionsupporting

confidence: 87%

Revisiting tolerance to ocean acidification: insights from a new framework combining physiological and molecular tipping points of Pacific oyster

Lutier

Poi

Gazeau

et al. 2021

Preprint

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“…The influence of OA on bivalve-associated microorganisms is inconsistent in the literature. Some studies have found no effect of OA on bivalve microbiomes (Alma et al 2020), while others have found significant shifts in bivalve microbiome composition and structure as a result of OA (Scanes et al 2021). Our findings agreed with the latter, showing that C. virginica microbiomes are significantly altered by OA exposure over time.…”

Section: Oyster Gill Microbes Linked To Oa Treatmentsupporting

confidence: 89%

“…Despite the importance of microbes to host physiology, the effects of OA on bivalveassociated microbiomes are inconclusive. Some studies found no effect of elevated pCO 2 exposure on the microbial community structure of scallop tissues (Alma et al 2020), while others found a significant effect of elevated pCO 2 on species diversity of the oyster hemolymph microbiome (Scanes et al 2021). To clarify our understanding of how bivalveassociated microorganisms respond to OA, it is essential to disentangle how host response to OA may alter microbial community dynamics.…”

mentioning

confidence: 99%

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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“…This is consistent with the presumption stress allows for disruption of microbial community structure as opportunistic pathogenic bacteria ourish at the expense of previously stable communities comprised of a few bacterial taxa. Stressors such as increased seawater temperature are known to disrupt microbial community structure in marine environments and organisms by either increasing or decreasing overall diversity (e.g., Brothers et al 2018;Li et al 2018;Ramsby et al 2018;Alma et al 2020;Botté et al 2020;Greenspan et al 2020).…”

Section: Discussionmentioning

confidence: 99%

Impacts of near‑future ocean warming on microbial community composition of the stomach of the soft‑bottom sea star Luidia clathrata (Say) (Echinodermata: Asteroidea)

Curtis

Morrow

McClintock

2021

Preprint

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There is growing evidence that environmental changes caused by climate change can impact the microbiome of marine invertebrates. Such changes can have important implications for the overall health of the host. In the present study we investigated the impact of chronic exposure to an ambient (28°C) and a predicted mid- (30°C) and end-of-century (32°C) seawater temperature on microbiome modification in tissues of the cardiac stomach of the abundant predatory sea star Luidia clathrata collected in September 2018 from Apalachee Bay, Florida (29°58’N, 84°19’W) in the northern Gulf of Mexico (GOM). Diversity (Shannon index) was lowest among the microbial community of stomach tissue when compared to the microbiome of the artificial sea star feed, and aquarium sand and seawater across all three experimental temperature treatments. Moreover, the stomach microbial community composition was distinct between each of the four sample types. Exposure to the highest experimental temperature treatment (32°C) resulted in a significant modification of the composition of the microbial community in stomach and sand samples, but not in seawater samples when compared to those from the current mean ambient GOM temperature (28°C). Importantly, at the most elevated temperature the stomach microbiome shifted from a Vibrio sp. dominated community to a more diverse community with higher proportions of additional taxa including Delftia sp. and Pseudomonas sp. This microbiome shift could impact the digestive functionality and ultimately the health of L. clathrata, a key soft-bottom predator in the northern GOM.

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Ocean acidification and warming effects on the physiology, skeletal properties, and microbiome of the purple-hinge rock scallop

Cited by 39 publications

References 79 publications

Revisiting tolerance to ocean acidification: insights from a new framework combining physiological and molecular tipping points of Pacific oyster

Revisiting tolerance to ocean acidification: insights from a new framework combining physiological and molecular tipping points of Pacific oyster

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

Impacts of near‑future ocean warming on microbial community composition of the stomach of the soft‑bottom sea star Luidia clathrata (Say) (Echinodermata: Asteroidea)

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