Hydrodynamic Control of Bivalve Filter Feeders: A Conceptual View

Wildish, D. J.; Kristmanson, D. D.

doi:10.1007/978-3-642-78353-1_9

Cited by 13 publications

(8 citation statements)

References 45 publications

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“…St Andrews, New Brunswick; but tidal currents at the collection site were not reported). This apparent contradiction between declining feeding rate in response to velocity (Wildish and Miyares 1990) and field observations showing mussel production increasing as a function of velocity was highlighted by Wildish and Kristmanson (1993) but not resolved.…”

Section: Discussionmentioning

confidence: 94%

Investigation of the effects of current velocity on mussel feeding and mussel bed stability using an annular flume

et al. 2002

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An annular flume was used to measure the effect of increasing current velocity on mussel (Mytilus edulis) feeding rate and the stability of mussel beds sampled from the mouth of the Exe estuary (SW England). It was found that, in contrast to earlier flume studies, the feeding rates of mussels from open coast sites were unaffected by current velocities up to 0.8 m s -1 . Algal cell depletion in the water column above mussels was a function of current velocity, increasing with declining currents below 0.05 m s -1 . The erodability/stability of the mussel bed, measured in terms of critical erosion velocity, sediment mass eroded and mean erosion rate, was found to be a function of the nature of the substrate and the density of the mussels. Erosion of mussel beds on sandy substrate showed a non-linear relationship with mussel bed density. In comparison with the sand (0% mussel cover), sediment resuspension was about five and four times higher for 25% and 50% cover, respectively. This was due to the increased turbulence and scouring around the clumps of mussels in low-density parts of the bed, and this resulted in some mussels detaching from the bed. At ~100% mussel cover, the sandy bed was more protected by the dense surface layer of mussels, and none became detached during erosion due to the high number of byssal attachments between individuals. The sediment resuspension from the 100% mussel cover was about three times lower than the 0% cover. Erosion of the bed with 50% cover resulted in burial of a large proportion of the mussels, with a 6 cm increase in sediment level. However, the mussels returned to the surface and recovered in 1-2 days, due to a combination of migration upwards and substrate settlement. Channels on the edge of the main Exmouth mussel bed were characterised by a more stable substrate comprising pebbles and sand with varying mussel densities. At these sites, where mussels experience high current velocities on spring tides (up to 0.9 m s -1 ), there was no difference between the erodability of pebble/sand substrate with 0% and 100% mussel cover. The sediment erosion was also lower than the 100% mussel cover on the sandy substrate, particularly at currents >0.4 m s -1 . Sampling of different parts of the mussel bed at Exmouth showed mussels at low densities were made up of smaller clumps with a lower mass ratio of mussels to attached substrate (pebbles/sand), thus providing a greater degree of anchorage.

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Section: Discussionmentioning

confidence: 94%

Investigation of the effects of current velocity on mussel feeding and mussel bed stability using an annular flume

et al. 2002

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“…The importance of boundary layer flow is acknowledged in processes such as larval settlement (Butman et al, 1988), suspension and filterfeeding (Wildish and Kristmanson, 1993), sediment transport (Hill and McCave, 2001) and biogeochemical cycling (Boudreau, 2001), but only a few studies have directly investigated the impact of hydrodynamics on predator-prey interactions in sedimentary environments (e.g. Rochette et al, 1994;Finelli et al, 2000).…”

Section: Discussionmentioning

confidence: 99%

Slow-moving predatory gastropods track prey odors in fast and turbulent flow

Ferner

Weissburg

2005

Journal of Experimental Biology

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“…In turbid Journal of Marine Biology macrotidal waters, such as the Western Scheldt Estuary [44] and the Marsdiep in the western Wadden Sea [45], M. edulis may frequently be exposed to high concentrations of chl and suspended matter, and in such situations it remains unknown to what degree M. edulis may exploit its filtration rate capacity while also coping with cleaning of the gills and sorting of particles of food value, particularly phytoplankton, and particles without food value, particularly silt [2,24,26,[46][47][48][49][50]. Finally, it should also be mentioned that other environmental factors in nature may influence the filtration rate, for example, flow-induced inhibition of filtration rate due to high ambient current velocity and turbulence (e.g., [51,52]), salinity changes (e.g., [53,54]), and toxic algae [55,56].…”

Section: Groupmentioning

confidence: 99%

Fluorometer Controlled Apparatus Designed for Long-Duration Algal-Feeding Experiments and Environmental Effect Studies with Mussels

Pleißner

Lundgreen

Lüskow

et al. 2013

Journal of Marine Biology

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Experimental feeding and growth studies on filter-feeding organisms often rely on constant algal concentrations maintained over extended periods of time. Here we present a fluorometer controlled apparatus (FCA) designed for feeding experiments with suspension-feeding mussels at naturally low chlorophyllaconcentrations above 0.5 µg L−1. The principle used is feedback regulation of the algal concentration based on continuous monitoring of the fluorescence intensity of chlorophyllain water pumped through the apparatus from an aquarium with mussels. The filtration rate is monitored continuously as the rate of change of measured volume of an algal stock added to the aquarium for keeping a constant algal concentration. As an example, the FCA has been used to study the filtration rates of blue mussels (Mytilus edulis) at algal concentrations both near and above the incipient saturation level for reduced filtration activity. As another example to put the FCA into perspective as a reliable method for environmental effect studies, the apparatus has been used to demonstrate the acute effect of changing salinity on the filtration rate ofM. edulis.

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Hydrodynamic Control of Bivalve Filter Feeders: A Conceptual View

Cited by 13 publications

References 45 publications

Investigation of the effects of current velocity on mussel feeding and mussel bed stability using an annular flume

Investigation of the effects of current velocity on mussel feeding and mussel bed stability using an annular flume

Slow-moving predatory gastropods track prey odors in fast and turbulent flow

Fluorometer Controlled Apparatus Designed for Long-Duration Algal-Feeding Experiments and Environmental Effect Studies with Mussels

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