Oysters and the Ecosystem

Bayne, B. L.

doi:10.1016/b978-0-12-803472-9.00010-8

Cited by 49 publications

(83 citation statements)

References 477 publications

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“…High PIM concentrations may also inhibit particle selection capabilities, thus exacerbating the food dilution effect (Kiørboe et al 1981). Unseasonably high clearance rates were observed on this date, perhaps in response to moderately high seston concentration as previously reported for mussels (Hawkins et al 1996), cockles (Iglesias et al 1996 and oysters (Bayne 2017). C. virginica can reject inorganic matter and increase CR in response to a decreasing fraction of organic matter (Galimany et al 2017), as observed in this study.…”

Section: Detritus Supplements Oyster Dietssupporting

confidence: 84%

“…Therefore, it is important to assess the fraction of total protein in naturally occurring seston that is labile, i.e. available for absorption by heterotrophs (Hawkins et al 2013b, Bayne 2017. Mayer et al (1995) developed a biomimetic assay for enzymatically hydrolyzable amino acids (EHAA) to estimate this relatively labile fraction of protein.…”

Section: Introductionmentioning

confidence: 99%

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Detrital protein contributes to oyster nutrition and growth in the Damariscotta estuary, Maine, USA

Adams¹,

Mayer²,

Rawson³

et al. 2019

Aquacult. Environ. Interact.

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Section: Detritus Supplements Oyster Dietssupporting

confidence: 84%

Section: Introductionmentioning

confidence: 99%

Detrital protein contributes to oyster nutrition and growth in the Damariscotta estuary, Maine, USA

Adams¹,

Mayer²,

Rawson³

et al. 2019

Aquacult. Environ. Interact.

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“…Here, we estimated the biodeposition rate of the oysters as weight units to make comparisons with other studies. Regional comparison of biodeposition rates can result in a biased assessment because they depend upon seston concentration as well as oyster size [ 82 ]. Nevertheless, our individual-based biodeposition estimate is much lower than other estimates worldwide: 0.12–0.22 g dry weight ind ‒1 d ‒1 in British Columbia [ 11 ], 2.4–30 g dry weight ind ‒1 d ‒1 in Marennes–Oléron Bay (France) [ 83 ], and 0.06–0.29 g dry weight ind ‒1 d ‒1 in Southern Tasmania (Australia) [ 81 ].…”

Section: Discussionmentioning

confidence: 99%

Physiological processes and gross energy budget of the submerged longline-cultured Pacific oyster Crassostrea gigas in a temperate bay of Korea

et al. 2018

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Physiological processes and gross energy budget of the longline-cultured Pacific oyster Crassostrea gigas were investigated in Geoje–Hansan Bay, Korea during two entire culturing periods. Based on physiological measurements of food consumption, feces production, ammonium excretion, and respiration from July 2008 to February 2009 and from July 2013 to February 2014, scope for growth appeared to be positive during most of the culturing period, except for one period with extremely high temperatures (up to 25°C). Estimates of physiological energy production matched well with tissue energy increment measured by gross biochemical composition during the culturing period, suggesting that the oysters might adjust their physiological performance to relatively low concentrations of suspended particulate matter in the bay to optimize energy acquisition. Such an adaptive adjustment includes an increased absorption of energy and a reduced loss of metabolic and excretory energy, resulting in positive production under high culturing density. Using physiological measurements, we further assessed the feedback effects of the longline aquaculture of oysters on the bay system. Ecological efficiency, estimated by a series of energetic efficiencies at the whole bay level, was low compared with Lindeman’s law of trophic efficiency. Biodeposition and ammonia excretion rates in this study were relatively low compared with other intertidal plastic bag cultures. These results indicate that the cultured oysters might have only minor effects on benthic and pelagic environments of the bay. Overall, our results suggest that the adaptive physiological performance of oysters and consequently weak feedback effects on ambient habitats should facilitate sustainable longline aquaculture in the bay for a prolonged period without severe habitat deterioration.

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“…As a strategy to survival, oysters may decrease their metabolic rate as an energy-sparing mechanism (Albentosa et al, 2007), channeling for the basal metabolism. Fatty acid contents in cell lipids are often based to evaluate the quality of nutrients (Bayne, 2017) and it is known that cell membrane proteins are influenced by the phospholipid polyunsaturation, playing a role in the metabolic rates of cells Else, 2004, 2005). In fact, Pernet et al (2008) observed in C. virginica a direct correlation between the tissue FA profile and the SMR.…”

Section: Discussionmentioning

confidence: 99%

“…Due to starvation, a gradual loss of glycogen occurs, causing a metabolic suppression, an adaptive response to a prolonged decline in energy intake. This way, less urgent demands such as reproduction and growth are inhibited, channeling reserves for maintenance levels (Bayne, 2017;García-Esquivel et al, 2002). Starved oysters and those fed with 100% SW possibly adjusted the energy supply and demand, channeling the energy to maintain metabolism, thus downregulating the ATP-dependent cellular process.…”

Section: Discussionmentioning

confidence: 99%

Fatty Acid Profile of Pacific Oyster, Crassostrea gigas, Fed Different Ratios of Dietary Seaweed and Microalgae during Broodstock Conditioning

Rato

Pereira

Joaquim

et al. 2019

Lipids

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The fatty acid (FA) profile of oysters generally reflects the dietary FA composition. Moreover, incorporation of FA into tissues is modulated by various metabolic factors, and final composition will depend upon the dietary sources, cumulative intake, and oysters' development stage. Thus, the aim of this study was to assess the impact of dietary incorporation of seaweed (SW) Ulva rigida, in replacement of traditional microalgae diet, on the FA composition of Pacific oysters Crassostrea gigas, during broodstock conditioning. The dietary conditioning consisted of direct replacement of microalgae (33% Tisochrysis lutea, 50.25% Skeletonema costatum, and 16.75% Chaetoceros calcitrans) by SW at four different substitution levels (0%, 25%, 50%, and 100% diet). The dietary docosahexaenoic acid (DHA) (22:6n‐3) and eicosapentaenoic acid (EPA) (20:5n‐3) contents showed a positive correlation with the dietary microalgae level. During the trial, oysters fed with higher percentages of microalgae revealed a depletion of DHA and accumulation of EPA. The 100% SW caused a significant reduction in oxygen consumption and, consequently, in the standard metabolic rate. Based on these results, a partial substitution of up to 25% of dietary microalgae seems to be a suitable alternative, because it elicited similar results to the commercial 100% microalgae diet.

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Oysters and the Ecosystem

Cited by 49 publications

References 477 publications

Detrital protein contributes to oyster nutrition and growth in the Damariscotta estuary, Maine, USA

Detrital protein contributes to oyster nutrition and growth in the Damariscotta estuary, Maine, USA

Physiological processes and gross energy budget of the submerged longline-cultured Pacific oyster Crassostrea gigas in a temperate bay of Korea

Fatty Acid Profile of Pacific Oyster, Crassostrea gigas, Fed Different Ratios of Dietary Seaweed and Microalgae during Broodstock Conditioning

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