Physiology: Energy Acquisition and Utilisation

MacDonald, Bruce A.; Bricelj, V. Monica; Shumway, Sandra E.

doi:10.1016/b978-0-444-62710-0.00007-9

Cited by 15 publications

(26 citation statements)

References 249 publications

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“…The 'bottom-up' relationship between the great scallop and its food implies a feeding plasticity in response to environmental availability. First of all, feeding activity seemed to correlate with phytoplankton dynamics at the water−sediment interface at the beginning of spring, which goes along with the hypothesized ability of P. maximus to resuspend microphytobenthos and sedimented microalgae by clapping its valves (Lorrain et al 2000, Chauvaud et al 2001, MacDonald et al 2006. For the rest of the study period, however, the diet of the scallop more closely followed the seston dynamics of the water column, which is also in compliance with a well described benthic−pelagic coupling (Chauvaud et al 2000, Cranford et al 2005.…”

Section: Diet Switchesmentioning

confidence: 94%

“…Suspension-feeding bivalves are known to feed mainly on microalgae, filtrated from the surrounding seawater (Le Pennec et al 2003, MacDonald et al 2006). The 'bottom-up' relationship between the great scallop and its food implies a feeding plasticity in response to environmental availability.…”

Section: Diet Switchesmentioning

confidence: 99%

“…High levels of zeaxanthin have been reported in cyanobacteria (Jeffrey 1974, 1997, Mackey et al 1996, Lampert 2001, Wright & Jeffrey 2006, Sanz et al 2015, the size of which is under 2 μm, and in other microorganisms (Grossman et al 1995). The gill retention capacity of most bivalves is not fine enough to capture such tiny particles (Møhlenberg & Riisgård 1978, MacDonald et al 2006, Strohmeier et al 2012. Nevertheless, several studies have shown evidence that free bacterioplankton, typically ranging in size from 0.3 to 1 μm, can be ingested and assimilated by Pectinidae and other bivalves when bound in aggregates (McHenery & Birkbeck 1985, Prieur et al 1990, Alber & Valiela 1995, MacDonald et al 2006, Ward & Kach 2009.…”

Section: Diet Switchesmentioning

confidence: 99%

“…The gill retention capacity of most bivalves is not fine enough to capture such tiny particles (Møhlenberg & Riisgård 1978, MacDonald et al 2006, Strohmeier et al 2012. Nevertheless, several studies have shown evidence that free bacterioplankton, typically ranging in size from 0.3 to 1 μm, can be ingested and assimilated by Pectinidae and other bivalves when bound in aggregates (McHenery & Birkbeck 1985, Prieur et al 1990, Alber & Valiela 1995, MacDonald et al 2006, Ward & Kach 2009. This could explain the occurrence of zeaxanthin in relatively high amounts (3%) in a few samples.…”

Section: Diet Switchesmentioning

confidence: 99%

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New insights into the seasonal feeding ecology of Pecten maximus using pigments, fatty acids and sterols analyses

Lavaud¹,

Artigaud²,

Grand³

et al. 2018

Mar. Ecol. Prog. Ser.

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We combined the use of pigments, fatty acids and sterols as biomarkers of the seasonal variation in food sources of the great scallop Pecten maximus. From March to October 2011, on a biweekly to twice-weekly basis, scallops and seawater from the water column and the water-sediment interface were collected in the Bay of Brest (Brittany, France). Pigment compositions in the seawater and in the stomach and rectum content of the scallops were analyzed by HPLC. Fatty acids and sterols from digestive gland (DG) tissue were analyzed by gas chromatography. Potential relationships between the temporal proportion of each marker in the environment and in the digestive tract were tested using multivariate analysis. Proportions of diatoms and Dinophyceae biomarkers alternated in the digestive tract of P. maximus. This switch of feeding was confirmed by the polar lipid composition of the DG. Peridinin, characterizing Dinophyceae, occurred in high proportions in the digestive tract compared to the low ambient concentration, suggesting a selection of this microalgae group by the scallop. Chlorophyceae and green macroalgae tracers were found in low proportions, suggesting they were not actually ingested. Markers of Prymnesiophyceae were also observed at significant levels. Cyanobacteria tracers showed that this microalgae class was not ingested by the scallops during monitoring but may be of higher importance during winter. Switching from one food source to another as well as selectivity in feeding are discussed relative to the season.

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Section: Diet Switchesmentioning

confidence: 94%

Section: Diet Switchesmentioning

confidence: 99%

Section: Diet Switchesmentioning

confidence: 99%

Section: Diet Switchesmentioning

confidence: 99%

See 2 more Smart Citations

New insights into the seasonal feeding ecology of Pecten maximus using pigments, fatty acids and sterols analyses

Lavaud¹,

Artigaud²,

Grand³

et al. 2018

Mar. Ecol. Prog. Ser.

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“…Scallop (Mizuhopecten yessoensis) culture is well established in the bay, and annual production is about 0.1 million tons. Scallop feeds on phytoplankton and particulate organic matter (MacDonald et al, 2006: Aya et al, 2013. Therefore the estimation of primary productivity is important to consider a sustainable allowance for scallop culture in the bay.…”

Section: Introductionmentioning

confidence: 99%

Primary productivity and nitrogen assimilation with identifying the contribution of urea in Funka Bay, Japan

Kudo

Hisatoku

Yoshimura

et al. 2015

Estuarine, Coastal and Shelf Science

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Primary production is supported by utilization of several forms of nitrogen (N), such as nitrate, ammonium, and urea. Nevertheless, only few studies have measured the concentration and uptake of urea despite its importance as a nitrogenous nutrient for phytoplankton. We measured primary productivity monthly at four depths within the euphotic zone using a clean technique and the 13 C method by a 24 h in situ mooring incubation over a year in Funka Bay, a subarctic coastal area in Japan, to make better updated estimates (re-evaluation) of annual primary production. Nitrogenous (N) nutrient assimilation rates (nitrate, ammonium and urea) were also measured to elucidate the relative contributions of these nutrients to autotrophic production and to distinguish between new and regenerated production. The estimated annual primary production was 164 g C m -2 , which was 40-60% higher than the previously reported The assimilation rate of urea was almost comparable to that of ammonium throughout the year. Taking urea into account, the f-ratio ranged from 0.15 under the nitrate-depleted conditions to 0.8 under the spring bloom conditions. These ratios were overestimated by 50% and 10%, respectively, if urea uptake was eliminated. We provide a valuable data for the primary production dataset in the world's ecosystems, and show that urea plays an important role in supporting regenerated production during late spring and summer.

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Management Adaptation to Climate Change Effect on Fisheries in Western Australia

Caputi

Lestang

Feng

et al. 2017

Climate Change Impacts on Fisheries and Aquaculture

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Physiology: Energy Acquisition and Utilisation

Cited by 15 publications

References 249 publications

New insights into the seasonal feeding ecology of Pecten maximus using pigments, fatty acids and sterols analyses

New insights into the seasonal feeding ecology of Pecten maximus using pigments, fatty acids and sterols analyses

Primary productivity and nitrogen assimilation with identifying the contribution of urea in Funka Bay, Japan

Management Adaptation to Climate Change Effect on Fisheries in Western Australia

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