Physiological comparisons of Pacific cupped oysters at different levels of ploidy and selection to OsHV-1 tolerance

Haure, Joël; François, Cyrille; Dégremont, Lionel; Ledu, Christophe; Maurouard, Élise; Girardin, Frédéric; Benabdelmouna, Abdellah

doi:10.1016/j.aquaculture.2021.737111

Cited by 8 publications

(4 citation statements)

References 33 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Similar results were observed previously (Phuvasate and Su, 2013). This could be explained by similar clearance rate and oxygen consumption for both ploidies (Haure et al, 2021). In addition, we showed that, for both diploid and triploid oysters, Vp depuration was higher during summer (June to August) than during the other months.…”

Section: Discussionsupporting

confidence: 58%

Effect of ploidy level on accumulation and depuration of Vibrio parahaemolyticus in Pacific oyster Crassostrea gigas

et al. 2023

Self Cite

View full text Add to dashboard Cite

Section: Discussionsupporting

confidence: 58%

Effect of ploidy level on accumulation and depuration of Vibrio parahaemolyticus in Pacific oyster Crassostrea gigas

et al. 2023

Self Cite

View full text Add to dashboard Cite

“…This result indicated that filtration capacities of the six batches of oysters were quite similar and thus, would not explain the accumulation differences between naïve and environmental oysters. Moreover, it was shown that the activity times of oysters linked to clearance rate and oxygen consumption (feeding time activity and respiratory activity) did not permit to distinguishing the oysters, when tested at 20°C, as a function of their life history trait (naive oysters vs. environmental oysters), their ploidy level (diploid and triploid) and their tolerance for OsHV‐1 (Haure et al ., 2021 ). Second, these results could be explained by the fact that naive oysters have never been exposed to environmental microflora, including Vibrio spp., contrary to environmental oysters.…”

Section: Discussionmentioning

confidence: 99%

Life history of oysters influences Vibrio parahaemolyticus accumulation in Pacific oysters (Crassostrea gigas)

Sorée

Delavat

Lambert

et al. 2022

Environmental Microbiology

Self Cite

View full text Add to dashboard Cite

Summary Vibrio parahaemolyticus infection in humans is associated with raw oyster consumption. Evaluation of V. parahaemolyticus presence in oysters is of most interest because of the economic and public health issues that it represents. To explore V. parahaemolyticus accumulation and depuration in adult Crassostrea gigas, we developed a GFP‐tagged V. parahaemolyticus strain (IFVp201‐gfp+), as well as a rapid and efficient quantification method in C. gigas oysters haemolymph by flow cytometry. Impact of the life history of C. gigas on accumulation and depuration of V. parahaemolyticus IFVp201 was subsequently investigated. We found that naive oysters, i.e. grown in controlled facilities with UV treated seawater, accumulated significantly more IFVp201 than environmental oysters, i.e. grown in intertidal environment. We hypothesized that environmental oysters could have been immune primed, thus could limit V. parahaemolyticus accumulation. Meanwhile, both naive and environmental oysters had similar depuration rates.

show abstract

“…In addition, oysters exposed to high food levels or selected for fast growth rate are more susceptible to OsHV-1 than slow-growing individuals (Pernet et al 2019). Finally, resistance to OsHV-1 is a highly heritable trait based on control of viral replication that may not be genetically correlated with growth or associated with differences in metabolic rates (Dégremont et al 2010, Dégremont 2011, Haure et al 2021.…”

Section: Introductionmentioning

confidence: 99%

Increased growth metabolism promotes viral infection in a susceptible oyster population

Petton

Alunno‐Bruscia

Mitta

2023

Aquacult. Environ. Interact.

View full text Add to dashboard Cite

The magnitude of an epidemic depends on host susceptibility to the disease, a trait influenced by the genetic constitution of the host and its environment. While the genetic basis of disease susceptibility is often associated with immune capacities, environmental effects generally reflect complex physiological trade-offs. We suggest here that in the case of obligate pathogens whose proliferation depends on the cellular machinery of the host (e.g. viruses), disease susceptibility is directly influenced by host growth. To test our hypothesis, we focussed on a viral disease affecting an ecologically relevant model exploited worldwide, the Pacific oyster Crassostrea gigas. Oysters originating from 3 lines with contrasting resistance to the disease were divided into 3 groups displaying different growth rates and acclimated to 3 food levels and 2 temperatures to generate different growth rates. These oysters were then exposed to the virus, and survival and viral shedding were measured. Finally, we developed a risk model to rank the relative importance of temperature, food, genetic selection and growth on disease-induced mortality. We found that increasing growth through temperature, food level or selection of fast-growing animals all increased mortality, especially in host populations where susceptible phenotypes dominated. Food provisioning was the most influential factor associated with higher viral shedding, followed by temperature, resistance phenotype and growth rate. We suggest that growth-forcing factors may promote the development of obligate intracellular pathogens and epidemic risk, thus opening up avenues for disease management based on the manipulation of host metabolism.

show abstract

Physiological comparisons of Pacific cupped oysters at different levels of ploidy and selection to OsHV-1 tolerance

Cited by 8 publications

References 33 publications

Effect of ploidy level on accumulation and depuration of Vibrio parahaemolyticus in Pacific oyster Crassostrea gigas

Effect of ploidy level on accumulation and depuration of Vibrio parahaemolyticus in Pacific oyster Crassostrea gigas

Life history of oysters influences Vibrio parahaemolyticus accumulation in Pacific oysters (Crassostrea gigas)

Increased growth metabolism promotes viral infection in a susceptible oyster population

Contact Info

Product

Resources

About