Influence of algal and suspended sediment concentrations on the feeding physiology of the hard clam Mercenaria mercenaria

Bricelj, V. Monica; Malouf, Robert E.

doi:10.1007/bf00393000

Cited by 187 publications

(90 citation statements)

References 38 publications

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“…However, in the present study, site-specific differences in AE are confounded to some small extent by the dietary enrichment resulting from pseudofaecal production at Mahanga Bay and the absence of such at Island Bay. Regardless of this, bivalve AE is strongly dependent upon food quality (Bricelj & Malouf 1984, Bayne et al 1987, Navarro et al 1991, in particular, upon the ratio of organic to inorganic matter (Griffiths 1980, Bayne et al 1987. Net AE values typically range from about -60 % up to about 60% (Bayne & Hawkins 1990).…”

Section: Discussionmentioning

confidence: 99%

Where are the mussels on Cook Strait (New Zealand) shores? Low seston quality as a possible factor limiting multi-species distributions

Gardner¹

2000

Mar. Ecol. Prog. Ser.

116

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Exammation of the physiological ecology of 3 sympatncally occurring mytilids (the ribbed, blue and greenshell mussels, Aulacomya maoriana, ivlytilus galloprovincialis and Perna canalicdus, respectively) was carned out during summer and winter at 2 sites which differ markedly in their environmental characteristics (Mahanga Bay inside Wellington Harbour, where mussels are abundant, and Island Bay on the exposed Cook Strait shore, where mussels are absent). Seston components (particle counts per rnl in the size range 2.5 to 63 pm, total particulate matter [TPbI], particulate organic matter [POM], and percent organic matter [PCOM]) all varied significantly between sites and between seasons. Mahanga Bay seston exhibited characteristics typical of productive temperate coastal waters. whereas Island Bay seston was characterised by low POM and low PCOM values. Weight-standardised clearance rate (CRS), net absorption efficiency (AE) and Scope for Growth (SFG) values were determined for all 3 mussel species at both sites during both seasons. At Island Bay there was no evidence of seasonal differences in CRs whereas at Mahanga Bay species-specific CRs values were all highest in the winter. Regardless of season, CRs estimates for all 3 species were higher at Mahanga Bay than at Island Bay. At both sites, AE estimates were highest in the w~nter, and AE estimates were higher at Mahanga Bay than at Island Bay during each season SFG estlrnates mirrored AE estimates, with SFG at both sites being highest in winter, and higher at Mahanga Ray than at Island Bay dunng each season. The SFG data support the hypothesis that mussels are absent from sites along Cook Strait shores because they do not enjoy a positive energy balance for long periods of time, consistent wlth the low seston organic matter levels at such locations. The SFG data also indicate that mussels lnside Wellington Harbour can maintain a large, positive net energy balance throughout the year, consistent with the considerable biomass and very large size of all 3 species in this environment.

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Section: Discussionmentioning

confidence: 99%

Where are the mussels on Cook Strait (New Zealand) shores? Low seston quality as a possible factor limiting multi-species distributions

Gardner¹

2000

Mar. Ecol. Prog. Ser.

116

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“…Pseudofeces production may decrease bivalve ingestion (Bricelj & Malouf 1984, Bacon et al 1998). Pseudofeces production was assumed to be negligible for these experiments because Mercenaria mercenaria produce low amounts of pseudofeces compared to other bivalves (Bricelj & Malouf 1984), and juvenile quahogs do not produce pseudofeces at the selected algal ration (Bass et al 1990, Wikfors et al 1992.…”

Section: Methodsmentioning

confidence: 99%

Effects of background concentrations of Aureococcus anophagefferens (brown tide) on growth and feeding in the bivalve Mercenaria mercenaria

Greenfield¹,

Lonsdale²,

Cerrato³

2004

Mar. Ecol. Prog. Ser.

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Much research on the toxic alga Aureococcus anophagefferens (brown tide) has focused on its effects on bivalve suspension feeding, but less is known about how brown tide influences bivalve growth. This study examined the extent to which background levels, defined as concentrations too low for toxicity to inhibit bivalve feeding, of A. anophagefferens influenced the growth and feeding physiology of northern quahogs Mercenaria mercenaria compared to other phytoplankton common to Long Island, New York, waters. Juvenile quahogs were fed either unialgal cultures of A. anophagefferens, non brown tide species, or diets mixed with background levels of brown tide. Absorption efficiency (AE) was determined using the 14 C: 51 Cr dual-tracer method, and growth was determined by overall biomass change. Results showed that unialgal diets resulting in the highest AE, specifically Isochrysis galbana and Thalassiosira pseudonana, were associated with rapid M. mercenaria growth. Conversely, Nitzschia closterium resulted in a comparatively low AE and a loss in quahog biomass. Diets mixed with brown tide resulted in a significantly lower AE than the corresponding unialgal diet for all phytoplankton species except N. closterium. Additionally, mixed diets exerted a small negative influence on quahog growth compared to unialgal diets. These observations suggest that quahogs may suffer subtle, chronic effects when A. anophagefferens is present in the field at background levels. Moreover, the different responses of M. mercenaria to each experimental diet have broad implications for understanding how phytoplankton community composition may influence bivalve growth patterns in the field.

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“…The combined sequence of valve open response at peak flow and closure during the chronic period by C.fluminea may reveal a costibenefit mechanism (Bayne andNewell 1983, Bricelj andMalouf 1984). One explanation may be that C.fluminea intrinsically reaches a feeding thrcshold once the peak pcriod subsides and reduces its feeding activity as fine sediment particles accumulate during the chronic turbidity phase (Summers et al 1996).…”

Section: Radiatamentioning

confidence: 99%

“…Such increases in turbidity can have direct deleterious effects on suspensionfeeding bivalves, including reduced efficiency of feeding and gas exchange (Bricelj andMalouf 1984, Alexander et al 1994). Since the degree of valve gaping is directly related to water pumping rate (Jorgensen et a1 1984, Gosling 2003.…”

mentioning

confidence: 99%

Valve Gape Response to Turbidity in Two Freshwater Bivalves (Corbicula flumineaandLampsilis radiata)

Bucci¹,

Showers²,

Levine³

et al. 2008

Journal of Freshwater Ecology

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In a laboratory study with a simulated storm event, we found a significant difference @<0.05) in valve gape response to the turbidity between Corbicula fluminea and Lampsilis radiata. Valves of C. jluminea opened more intensively during the peak turbidity period and closed significantly more during a following chronic turbidity period. L. radiata exhibited little change in valve gape response with change in turbidity.The urbanization of river catchments with changes in land use can lead to increased stream turbidity, especially in relation to storm events and precipitation runoff. Such increases in turbidity can have direct deleterious effects on suspensionfeeding bivalves, including reduced efficiency of feeding and gas exchange (Bricelj and Malouf 1984, Alexander et al. 1994). Since the degree of valve gaping is directly related to water pumping rate (Jorgensen et a1 1984, Gosling 2003. valve gape can be used as an indicator of bivalve response to environmental conditions, including turbidity. Because there is a need to better understand how native and invasive freshwater bivalves respond to changes in turbidity, we simulated storm-related turbidity conditions in the laboratory and electronically monitored the valve gape response of two species of freshwater bivalves -a state-listed threatened native mussel, Lampsilis radiata, and the exotic invasive bivalve Corbicula fluminea.Groups of ten to fifteen adult C.Juminea and L. radiata were monitored in three replicate experiments. The L. radiata were from a population raised in captivity at North Carolina State University. The C.fluminea were collected fiorn Lake Wheeler (35.60aN, 78.70aW). The animals were kept in holding tanks and acclimated to laboratory conditions (i.e., dechlorinated tap water, temperature of-20°C, and a 12:12 photoperiod) for one month at turbidity <10 NTU (nephelometric turbidity units).Preliminary to the experiments, a turbidity storm event curve was measured at field sites in the Neuse River to determine the range of turbidity to which bivalves might be exposed during storm flow conditions. These conditions were replicated in the laboratory by adding sediment (0.005-0.05 mm) into a closed recirculation flume system constructed of fiberglass and PVC components. Once a desired turbidity peak was achieved, additions of sediment were stopped and the current flow was reduced to half flow, which allowed the turbidity levels to decrease within the system. For each replication, between 10 and 15 bivalves of one species were glued to posts on a magnetic gape sensing device (BioBayTM, Nekton Research LLC). Small magnets were glued to exposed valves so that detectable current was generated when the valve position changed. Data were analyzed using the BioBayTM computer software.Six simulated storm experiments (three per species) were conducted, testing the valve gape responses of 39 C.fluminea and 20 L. radiata. During each experiment, which lasted about 48 h, baseline, peak, and chronic turbidity periods were replicated in that sequence. T...

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Influence of algal and suspended sediment concentrations on the feeding physiology of the hard clam Mercenaria mercenaria

Cited by 187 publications

References 38 publications

Where are the mussels on Cook Strait (New Zealand) shores? Low seston quality as a possible factor limiting multi-species distributions

Where are the mussels on Cook Strait (New Zealand) shores? Low seston quality as a possible factor limiting multi-species distributions

Effects of background concentrations of Aureococcus anophagefferens (brown tide) on growth and feeding in the bivalve Mercenaria mercenaria

Valve Gape Response to Turbidity in Two Freshwater Bivalves (Corbicula flumineaandLampsilis radiata)

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