Giant scallop feeding and growth responses to flow

Wildish, D. J.; Kristmanson, D. D.; Hoar, R.L.; DeCoste, A.M.; McCormick, Stephen D.; White, Alan W.

doi:10.1016/0022-0981(87)90101-8

Cited by 111 publications

(56 citation statements)

References 30 publications

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“…The results of this experiment demonstrated that current velocity had a marked effect on filtration rate of P. maxima and that this species follows the general pattern of response observed for other bivalves. Previous studies have recorded a similar gradual decline in the suspension feeding and/or growth of bivalves with increasing current velocity from 1 to >15 cm s -1 in mussel M. edulis (Wildish & Miyares, 1990), giant scallop Placopecten magellanicus (Wildish et al, 1987) and , bay scallop Argopecten irradians (Kirby-Smith, 1972) and (Cahalan et al, 1989), Ruditapes decussates (Sobral & Widdows, 2000), (MacKenzie et al, 1994), (Ackerman, 1999) and (Peters & Marrasé, 2000). Lesser et al (1994) also stated that higher fluxes, however, do not always give positive results, in which benthic suspension feeders responded both positively and negatively as current velocity increased.…”

Section: Filtration Ratesupporting

confidence: 52%

“…Nonsiphonate bivalve molluscs generally show a negative effect of increasing current velocity on filtration or filtration rate (Cahalan et al, 1989). Moreover, particles are directed towards the mouth by ciliary motions which may be affected by high current velocities (Ward et al, 2003) or a bypass of the gill structure (Wildish et al, 1987;Wildish & Saulnier, 1993).…”

Section: Filtration Ratementioning

confidence: 99%

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EFFECTS OF CURRENT VELOCITY ON FILTRATION AND INGESTION RATE OF PEARL OYSTER (Pinctada maxima)

Supii

Lestari

Sudewi

2012

Indonesian Aquaculture Journal

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Pinctada maxima is a filter feeder organism obtaining food particles by filtration from water suspension. Filtration and ingestion rate of a large number of benthic filter feeders in a variety of coastal environment have been known influenced by current velocity. The purposes of this study were to examine the effects of current velocity on filtration and ingestion rate of pearl oyster P. maxima and to determine the best current velocity. Randomized Block Design was used in this experiment with four current treatments of 8, 16, 24, and 32 cm s -1 . The results of this experiment demonstrated that current velocity has a marked effect on filtration rate of P. maxima and that this species follows the general pattern of response observed for other bivalves. Different velocity affected filtration and ingestion rate in pearl oyster P. maxima. It was gradual decline in the suspension feeding with increasing velocity. Filtration rate of bivalves with siphons facing into the current, were directly inhibited by hydrodynamic effects on the functioning of the bivalves pump. At increasing current velocity, pressures applied to the inhalant and exhalant aperture facing into the flow would result in higher pressures than that of produced by the ciliary pump, resulting in reduced filtration rate. The highest filtration and ingestion rate in this experiment were obtained at velocity of 8 cm s -1 that achieved 3.409±0.485 l/h and 37.91±1.27 (x10 7 ) cells/h, respectively.

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Section: Filtration Ratesupporting

confidence: 52%

Section: Filtration Ratementioning

confidence: 99%

EFFECTS OF CURRENT VELOCITY ON FILTRATION AND INGESTION RATE OF PEARL OYSTER (Pinctada maxima)

Supii

Lestari

Sudewi

2012

Indonesian Aquaculture Journal

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“…Our results of fastest growth on the bottom contradict the prediction of increased growth higher in the seagrass canopy due to faster currents. The effects of increased water flow on scallop growth have been variable and suggest that growth of scallops may be inhibited at higher flows (Kirby-Smith 1972, Wildish et al 1987, Eckman et al 1989). Oscar Shoal is exposed to wind waves from 3 directions and has grass densities and grass blade and bed morphology typical of exposed sites (Fonseca et al 1983).…”

Section: Discussionmentioning

confidence: 99%

Height of attachment on seagrass leads to trade-off between growth and survival in the bay scallop Argopecten irradians

Ambrose¹,

Irlandi²

1992

Mar. Ecol. Prog. Ser.

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Recent experiments have demonstrated that the canopy of seagrass beds provides a refuge from predation for juvenile bay scallops Argopecten irradians. Elevation off the bottom may also place juvenile scallops attached to grass blades in flow regimes more favorable to growth than if they settled on the bottom. Juvenile scallops (mean shell height 12.3 mm) were attached to seagrass mimics at 0, 5, and 15 cm off the bottom and their survival was followed over three 24 h periods; growth and survival were then monitored after 2, 3, and 9 wk. Survival at the 0 cm elevation was significantly lower than at 15 cm while survival at the 5 cm elevation was not significantly different from either extreme. Scallops grew fastest at 0 cm, significantly slower at 15 cm, and slowest at 5 cm. Selection of attachment locations off the bottom by juvenile scallops incurs the cost of reduced growth and scallops are faced with a trade-off between reducing their risk of predation and maximizing their growth.

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“…During high tide, hydrodynamic properties can influence key biological processes. For example, flow velocity determines larval and food flux for suspension feeders, thus influencing recruitment and growth (Fréchette & Bourget 1985, Wildish et al 1987. Turbulent diffusion influences settlement (Harvey et al 1995) and feeding rates (Nowell & Jumars 1984), while wave force influences maximum body size (Gaylord et al 1994), fertilization (Denny & Shibata 1989) and post-settlement mortality (Connell 1961).…”

Section: Individual Versus Population Level Responsementioning

confidence: 99%

Scaling the influence of topographic heterogeneity on intertidal benthic communities: alternate trajectories mediated by hydrodynamics and shading

Guichard¹,

Bourget²,

Robert³

2001

Mar. Ecol. Prog. Ser.

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Scale-dependent influence of environmental complexity has become a central issue in ecology. We quantified the impact of artificial reefs on community characteristics (biomass, density) and on individual mussel growth, and we tested the relative importance of physical processes (i.e. flow velocity, substratum temperature) as intermediate factors mediating the scale-dependent influence of topographic heterogeneity on benthic communities. Twelve concrete reefs (cylinders) of 3 different sizes (52, 76 and 115 cm) were placed on randomly selected sites along a rocky intertidal platform. The area around each reef and 4 control sites were divided into 24 sampling cells (6 orientation and 4 distance categories). Hydrodynamic patterns around reefs and control sites were determined using the dissolution of plaster cylinders. Flow velocity was simulated around reefs using a finite-element hydrodynamic model. Substratum temperature was also measured. The biomass and density of benthic community adjacent to the reefs was sampled using 10 × 10 cm quadrats before and 1 yr after installation. Growth of individual Mytilus edulis attached to experimental panels was measured. A flow index revealed a strong scale-dependent gradient of decreasing water motion intensity with distance from the reefs, and the hydrodynamic model showed a reduction of flow velocity on the downstream side of large reefs. Substratum temperature was lower closer to reefs, and shaded areas increased with reef size. Maximum M. edulis biomass was around large reefs, while the biomasses of other dominant species were not positively influenced by reef size. Biomass and density patterns close to the reefs were significant only around large reefs, with the downstream side having the lowest M. edulis biomass. Growth of M. edulis decreased significantly with distance away from the reefs. Biomass patterns were best explained by the flow velocity around the large reefs (R 2 = 0.27), while mussel growth was best correlated with substratum temperature close to the medium reefs (R 2 = 0.66). Our study shows that the spatial structure of the benthic community studied and its scaling with topographic heterogeneity depends on dominant mediating physical factors (i.e. hydrodynamic processes or substratum temperature).

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Giant scallop feeding and growth responses to flow

Cited by 111 publications

References 30 publications

EFFECTS OF CURRENT VELOCITY ON FILTRATION AND INGESTION RATE OF PEARL OYSTER (Pinctada maxima)

EFFECTS OF CURRENT VELOCITY ON FILTRATION AND INGESTION RATE OF PEARL OYSTER (Pinctada maxima)

Height of attachment on seagrass leads to trade-off between growth and survival in the bay scallop Argopecten irradians

Scaling the influence of topographic heterogeneity on intertidal benthic communities: alternate trajectories mediated by hydrodynamics and shading

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