Metals and marine food chains

Nott, J. A.

doi:10.1007/978-1-4757-2761-6_12

Cited by 11 publications

(6 citation statements)

References 98 publications

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“…Decrease in metal concentration at higher trophic levels, observed in the studied food chains, in most cases confirms results of numerous other studies, namely that metals are concentrated to the greatest extent by primary producers or by the first two links of short food chains, but never in small or large fish (BRYAN 1979, HODSON 1980, BAUDO 1985, PRAHALAD & SEENAYYA 1986, DALLINGER et al 1987, DEVI et al 1996, NOTT 1998, BLANCHARD et al 1999, MASON et al 2000, CHEN et al 2000. The reason is a limited availability of metals resulting from ligand binding and compartmentalisation.…”

Section: Role Of Molluscs In Trophic Transfer Of Phosphorus and Heavysupporting

confidence: 85%

“…Forms bound as insoluble phosphates and sulphur compounds are unavailable to predators, since they are not absorbed by alimentary tract, and thus not transferred along food chains. Molluscs may bind excess of heavy metals in mineral granules which are a result of detoxication (HODSON 1980, NOTT & LANGSTON 1989, NOTT & NICOLAIDOU 1990, BURBRIDGE et al1996, NOTT 1998. Thus inactivated metals are, after a certain time, excreted with faeces and enrich bottom deposits.…”

Section: Role Of Molluscs In Trophic Transfer Of Phosphorus and Heavymentioning

confidence: 99%

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Malacocoenoses of large lowland dam reservoirs of The Vistula River basin and selected aspects of their function

Jurkiewicz-Karnkowska¹

2004

Folia Malac.

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Spatio-temporal variation in qualitative and quantitative occurrence of malacofauna was analysed in three large lowland dam reservoirs. Differences between the malacofauna of flooded land areas and former river beds persist even in middle-aged reservoirs. Quick turnover of water has a positive effect on mollusc abundance and species richness of the whole reservoir, and on the frequency of occurrence in the former river bed. Considerable dynamics of the malacocoenoses and a possibility to revert to earlier development stages, as a result of considerable disturbance, were observed at an advanced stage of biocoenosis development. Besides water dynamics and composition and distribution of bottom deposits, a significant effect on the malacocoenoses is exerted by dominant species, especially D. polymorpha. Abundance and dominance structure of malacocoenoses determine their role in the ecosystem, including accumulation of phosphorus and heavy metals, and their cycling as a result of filtration activity, faeces production, excretion and trophic transfer. Generally, the quantities of elements, especially heavy metals, accumulated in molluscs, are much smaller than the quantities which flow through the malacocoenoses. A large part of the pool of these elements contained in the shells is excluded from circulation for many years. Food chains seem to have relatively little effect on the transfer of heavy metals in the reservoir.

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Section: Role Of Molluscs In Trophic Transfer Of Phosphorus and Heavysupporting

confidence: 85%

Section: Role Of Molluscs In Trophic Transfer Of Phosphorus and Heavymentioning

confidence: 99%

Malacocoenoses of large lowland dam reservoirs of The Vistula River basin and selected aspects of their function

Jurkiewicz-Karnkowska¹

2004

Folia Malac.

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“…This is mainly caused by the complexity of metal-handling strategies in different groups of marine organisms. For example, several studies have highlighted the control of metal binding with insoluble ligands as affecting their availability to the predators (Nott & Nicolaidou 1990, Amiard-Triquet et al 1993, Nott 1998, Ettajani et al 2001). …”

Section: Trace Metal Concentration and Bioaccumulation At Different Mmentioning

confidence: 99%

“…Earlier experimental studies have examined the trophic transfer of metals in aquatic food chains (Fowler 1982, Bryan 1984, Fisher & Reinfelder 1995, Nott 1998. Recent studies have, however, made major progress in this research field, largely as a result of the development of novel approaches to quantifying metal bioavailability from dietary sources.…”

Section: Introductionmentioning

confidence: 99%

Interactions of trace metals and different marine food chains

Wang¹

2002

Mar. Ecol. Prog. Ser.

485

268

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There is increasing recognition of the quantitative importance of metal accumulation from dietary pathways in different marine food webs. With a simple kinetic model requiring measurements of metal assimilation efficiency (AE), metal efflux rate and ingestion activity of the relevant animals, it is possible to predict the transfer (and potential biomagnification) of metals along diverse marine food chains. In this paper, food chain transfer in different marine food chains (planktonic and benthic) is reviewed, and any potential biomagnification of metals is predicted using the simple kinetic equation. It is well recognized that metal concentrations in animals are probably not related to the trophic level in the food chain, but some metals (Hg and Zn) may potentially be influenced by the numbers of trophic interactions involved. Depending on these different trophic interactions, the potential biomagnification of metals is influenced by metal assimilation or metal efflux rate or both. Metals may potentially be biomagnified in benthic food chains; principally, in those with gastropods as top predators, as they can efficiently sequester dietary metals. The biodiminution of metals (concentration decreases at a higher trophic level) in the classical marine planktonic food chain (phytoplankton to copepods to fish) is largely the result of the effective efflux of metals by the copepods and the very low assimilation of metals by marine fish. Although many past studies have considered the physico-chemical properties of metals in prey in controlling food chain transfer, it is suggested that the physiological and biochemical processes in the herbivore or predator should be emphasized in future studies. Also, the complicated metal-handling strategies found in different marine organisms clearly need to be appreciated. KEY WORDS: Food chain · Trace metals · Biomagnification · Trophic transfer factor · Invertebrates · FishResale or republication not permitted without written consent of the publisher

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“…Marine gastropods are an excellent taxon for studying the trophic transfer of metals (Nott & Nicolaidou 1989, Nott 1998. They are usually the top predators in marine intertidal benthic communities, such as those found on sandy beaches and rocky shores.…”

Section: Introductionmentioning

confidence: 99%

Inter-site differences in the biodynamics and body concentration of silver in a marine predatory gastropod

Wang¹,

Tse²

2009

Aquat. Biol.

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The body concentrations of Ag in a top marine predator, the whelk Thais clavigera, varied significantly (1.10 to 4.67 µg g -1 dry wt) in individuals collected from 3 intertidal rocky shores in Hong Kong, whereas there was no significant difference in Ag concentrations in species from lower trophic levels (macroalgae Ulva sp. and rocky oyster Saccostrea cucullata). We compared the variation in Ag biodynamics in whelks collected from these 3 locations. There was no significant difference in the Ag dietary assimilation efficiency, Ag dissolved uptake rate, or estimated metallothionein concentration among the 3 locations. Significant differences were found in the Ag efflux rate constant and the subcellular distribution of Ag. Whelks from Clear Water Bay, which had the lowest body concentration of Ag, had a higher Ag efflux rate constant (0.0268 d ), as well as a correspondingly lower fraction of Ag in the metallothionein-like protein pool (which might contain both metallothioneins and other low molecular weight thiols). The Ag distribution in the other 4 subcellular fractions (metal-rich granules, cellular debris, organelles, heatsensitive proteins) was similar among the 3 sites. The biokinetic model demonstrated that biokinetic parameters can predict this 4-fold inter-site difference of body Ag concentrations in whelks. Moreover, such variation was mainly caused by variation in Ag efflux, although other parameters such as dietary assimilation and the concentration of Ag in prey were also important. Our calculations suggest that the prey composition may be specific to the site. The complexity of food webs should thus be considered when examining metal bioaccumulation in marine predators.

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Metals and marine food chains

Cited by 11 publications

References 98 publications

Malacocoenoses of large lowland dam reservoirs of The Vistula River basin and selected aspects of their function

Malacocoenoses of large lowland dam reservoirs of The Vistula River basin and selected aspects of their function

Interactions of trace metals and different marine food chains

Inter-site differences in the biodynamics and body concentration of silver in a marine predatory gastropod

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