Marine heat waves differentially affect functioning of native (Ostrea edulis) and invasive (Crassostrea [Magallana] gigas) oysters in tidal pools

Gilson, Abby R.; Coughlan, Neil E.; Dick, Jaimie T. A.; Kregting, Louise

doi:10.1016/j.marenvres.2021.105497

Cited by 11 publications

(6 citation statements)

References 69 publications

(80 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Nevertheless when Chl-a levels are high enough (> 5 ug/L) oysters SFG is positive also at the ends of the range. As found in an empirical study, responses of O. edulis to thermal stress are dependent on food availability (Gilson et al 2021). The model suggests that this is still a suitable area for this species.…”

Section: Resultsmentioning

confidence: 75%

Parameterization of a bioenergetic model to estimate shell, somatic and reproductive tissue growth of Ostrea edulis

Bertolini

Pastres

2023

Preprint

View full text Add to dashboard Cite

Several projects to reintroduce the native oyster Ostrea edulis are being carried out in Europe, some based on the restorative aquaculture approach. These projects could benefit from the application of a model which could predict oyster growth under different environmental conditions. Growth can be an indicator of suitable conditions and predicting it can particularly relevant for site selection. The simulated physiological processes underlying growth (e.g. clearance and respiration rates, storage of nutrients in tissues) could also support the estimation of the ecosystem functioning and services provided by new oyster reefs, thus allowing one to quantify the restoration benefits. Within this study, we developed a bioenergetic Individual Based Model (IBM) for Ostrea edulis, based on the Scope for Growth approach. Model parameters were estimated based on available literature data and a set of field data collected in the Venice Lagoon, which included time series of somatic and gonadal tissue and shell weight. The model was then successfully applied to the simulation of two further sets of previously published data. These findings suggest that the model could be used as a predictive tool for estimating Ostrea edulis growth over a wide range of environmental conditions and as a building block of oyster reef models.

show abstract

Section: Resultsmentioning

confidence: 75%

Parameterization of a bioenergetic model to estimate shell, somatic and reproductive tissue growth of Ostrea edulis

Bertolini

Pastres

2023

Preprint

View full text Add to dashboard Cite

show abstract

“…In addition, a greater food supply at upwelling sites may be sufficient to compensate for an increase in the grazing effort required to sustain greater metabolic demand and increase growth rates, strengthening top‐down control (Blanchette et al, 2007; Gilman, 2006; Miller et al, 2015; O'Connor, 2009). Warmer temperatures under conditions of limited food supply have been associated with lower growth and reproduction for several species of limpets, mussels, barnacles and oysters (Blanchette et al, 2007; Gilman, 2006; Gilson et al, 2021; Miller et al, 2015; Sanford & Menge, 2001).…”

Section: Discussionmentioning

confidence: 99%

Top‐down versus bottom‐up: Grazing and upwelling regime alter patterns of primary productivity in a warm‐temperate system

Gilson,

McQuaid

2023

Ecology

Self Cite

View full text Add to dashboard Cite

Community structure is driven by the interaction of physical processes and biological interactions that can vary across environmental gradients and the strength of top‐down control is expected to vary along gradients of primary productivity. In coastal marine systems, upwelling drives regional resource availability through the bottom‐up effect of nutrient subsidies. This alters rates of primary production and is expected to alter algae–herbivore interactions in rocky intertidal habitats. Despite the potential for upwelling to alter these interactions, the interaction of upwelling and grazing pressure is poorly understood, particularly for warm‐temperate systems. Using in situ herbivore exclusion experiments replicated across multiple upwelling regimes, we investigated the effects of both grazing pressure, upwelling, and their interactions on the sessile invertebrate community and biomass of macroalgal communities in a warm‐temperate system. The sessile invertebrate cover showed indirect effects of grazing, being consistently low where algal biomass was high at upwelling sites and at nonupwelling sites when grazers were excluded. The macroalgal cover was greater at upwelling sites when grazers were excluded and there was a strong effect of succession throughout the experimental period. Grazing effects were greater at upwelling sites, particularly during winter months. There was a nonsignificant trend toward greater grazing pressure on early than later successional stages. Our results show that the positive bottom‐up effects of nutrient supply on algal production do not overwhelm top‐down control in this warm‐temperate system but do have knock‐on consequences for invertebrates that compete with macroalgae for space. We speculate that global increases in air and sea surface temperatures in warm‐temperate systems will promote top‐down effects in upwelling regions by increasing herbivore metabolic and growth rates.

show abstract

“…Intertidal organisms that live in highly variable environments are likely to be more tolerant to pH fluctuation than those living in the more stable subtidal zone (Melzner et al, 2009; Vargas et al, 2017, 2022). Comparative studies have suggested that the intertidal C. gigas could even outcompete the subtidal O. edulis under fluctuating environmental conditions (Gilson et al, 2021; Green et al, 2017; Stechele et al, 2022). Regarding to seawater acidification, Bamber (1990) established the reaction norms to pH in C. gigas and O. edulis after a 30-day exposure and reported the highest sensitivity of O. edulis , although the pH gradient and the experimental procedure for acidifying the water (adding sulphuric acid) may be questionable.…”

Section: Discussionmentioning

confidence: 99%

Differential reaction norms to ocean acidification in two oyster species from contrasting habitats

Caillon,

Pernet,

Lutier

et al. 2023

Preprint

View full text Add to dashboard Cite

Ocean acidification (OA), a consequence of the increase in anthropogenic emissions of carbon dioxide, causes major changes in the chemistry of carbonates in the ocean with deleterious effects on calcifying organisms. The pH/pCO2 range to which species are exposed in nature is important to consider when interpreting the response of coastal organisms to OA. In this context, emerging approaches, which assess the reaction norms of organisms to a wide pH gradient, are improving our understanding of tolerance thresholds and acclimation potential to OA. In this study, we decipher the reaction norms of two oyster species living in contrasting habitats: the intertidal oyster Crassostrea gigas and the subtidal flat oyster Ostrea edulis, which are two economically and ecologically valuable species in temperate ecosystems. Six-month-old oysters of each species were exposed in common garden for 48 days to a pH gradient ranging from 7.7 to 6.4 (total scale). Both species are tolerant down to a pH of 6.6 with high plasticity in fitness-related traits such as survival and growth. However, oysters undergo remodelling of membrane fatty acids to cope with decreasing pH along with shell bleaching impairing shell integrity and consequently animal fitness. Finally, our work reveals species-specific physiological responses and highlights that intertidal C. gigas seems to have a better acclimation potential to rapid and extreme OA changes than O. edulis. Overall, our study provides important data about the phenotypic plasticity and its limits in two oyster species, which is essential for assessing the challenges posed to marine organisms by OA.

show abstract

Marine heat waves differentially affect functioning of native (Ostrea edulis) and invasive (Crassostrea [Magallana] gigas) oysters in tidal pools

Cited by 11 publications

References 69 publications

Parameterization of a bioenergetic model to estimate shell, somatic and reproductive tissue growth of Ostrea edulis

Parameterization of a bioenergetic model to estimate shell, somatic and reproductive tissue growth of Ostrea edulis

Top‐down versus bottom‐up: Grazing and upwelling regime alter patterns of primary productivity in a warm‐temperate system

Differential reaction norms to ocean acidification in two oyster species from contrasting habitats

Contact Info

Product

Resources

About