Effects of salinity changes on zinc uptake and regulation by the decapod crustaceans Palaemon elegans and Palaemonetes varians

Nugegoda, Dayanthi; Rainbow, P. S.

doi:10.3354/meps051057

Cited by 81 publications

(45 citation statements)

References 16 publications

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“…This result was similar to the studies on amphipods (Orchestia gammarellus) by Rainbow et al 40 and Rainbow and Kwan 41 , which found that decreases in salinity produced predictable increases in metal uptake rate. This result was different from the study in Palaemon elegans and Palaemonetes varians by Nugegoda and Rainbow 42,43 that decreases in salinity could decrease concentration of metals. This is similar to the study by Xiaobo et al 12 in molluscs (Onchidium struma) that Cu is a cofactor for regulating the activity of Cudependent enzymes 12,44 and an essential component required for the synthesis of haemocyanin 45 .…”

Section: Discussioncontrasting

confidence: 54%

Accumulation of Cd, Cu, Pb, and Zn in water, sediments, and mangrove crabs (Sesarma mederi) in the upper Gulf of Thailand

Chaiyara¹,

Ngoendee²,

Kruatrachue³

2013

ScienceAsia

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Mangrove crabs (Sesarma mederi) can be used as bioindicators of the environment. This study aimed to estimate the heavy metal content in S. mederi in various Thai mangroves and compare them with other studies for international regulations for human consumption. S. mederi were obtained from the mangroves of the Chao Phraya, Tha Chin, and Mae Klong rivers. The concentrations of Cd, Cu, and Pb in the rivers were low compared to the marine standards of Thailand and estuarine water elsewhere. The concentrations of Cd and Cu in sediments were rather similar to those in other rivers. The results showed that crabs accumulated metals in the order: Cd > Cu > Pb > Zn. The bioconcentration factor of Cd and Cu was highest in Mae Klong, while Pb and Zn were highest in Chao Phraya. Although metal concentrations in crabs were within the ranges found in other studies, they exceeded the maximum ranges according to standards. Hence as mangrove crabs are highly consumed as traditional and international Thai food, they may be a potential health hazard for human consumers. Consequently, the use of mangrove crab could be an interesting tool for monitoring estuary pollution.

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Section: Discussioncontrasting

confidence: 54%

Accumulation of Cd, Cu, Pb, and Zn in water, sediments, and mangrove crabs (Sesarma mederi) in the upper Gulf of Thailand

Chaiyara¹,

Ngoendee²,

Kruatrachue³

2013

ScienceAsia

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“…The failure of low salinities to increase Zn influx, in contrast with Cd and Cr, is contradictory to other studies that report increased Zn influx by crustaceans and molluscs with decreased salinity (e.g. Nugegoda & Rainbow 1989a, b, Wanq et al 1996. It is also not consistent with an overall increased gill permeability at lower salinities, which was one explanation for the Cr results.…”

Section: Daycontrasting

confidence: 52%

Uptake and loss kinetics of Cd, Cr and Zn in the bivalves Potamocorbula amurensis and Macoma balthica:effects of size and salinity

Lee¹,

Wallace²,

Luoma³

1998

Mar. Ecol. Prog. Ser.

115

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Radiotracer studies were employed to quantitat~vely compare the biokinetics of uptake from the dissolved phase (influx rates) and loss (efflux) between 2 bivalves, Potamocorbula arnurensls and Macoma balthica, and among the metals Cd, Cr and Zn. Effects of salinity on influx rate were evaluated in these 2 highly euryhaline species as were effects of animal size on uptake and loss. Metal speciation and biological attributes interacted to differentiate bioaccumulation processes among metals and between species. Influx rates of the 3 metals (pg g-I [dry wt] d-') increased linearly with dissolved metal concentrations. Influx rates of Zn in both clams were 3 to 4x those for Cd and 15x those for Cr. However, influx on the basis of free ion activities would be faster for Cd than for Zn. Relative influx rates among the metals were similar in the 2 bivalves. But, absolute influx rates of all 3 metals were 4 to 5 x greater in P. arnurensis than in M. balthica, probably because of differences in biological attributes (i.e. clearance rate or gill surface area). As salinity was reduced from 30 to 5 psu, the influx rate of Cd for P. amurensis increased 4-fold and that for M. balthica increased 6-fold, consistent with expected changes in speciation. However the influx rates of Cr in both clams also increased 2.4-fold over the same range, indicating a biological contribution to the salinity effect. Influx rates of Zn were not significantly affected by salinity. Weight specific metal influx rates (pg g-' [dry wt] d-') \Yere negatively correlated with the tissue dry weight of the clams, but most rate constants determining physiological turnover of assimilated metals were not affected by clam size. The exception was the rate constant for Cd loss, which resulted in faster turnover in large M. balthica than in smaller clams. The rate constant of loss for P. arnurensis increased in the order of Cd (0.011 d-') < Zn (0.027 d-l) < Cr (0.048 d-l). This was different from the hierarchy of rate constants for M. balthica: Zn (0.012 d-l) < Cd (0.018 d-l) < Cr (0.024 d.').

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“…1990, Rainbow et al 1993), or changes in salinity that alter concentrations of inorganic anions such as chloride that complex particular metal ions (Nugegoda & Rainbow 1989a,b, Rainbow et al 1993, Rainbow & Black 2002. For example, dissolved cadmium in seawater exists mostly as chloro-complexes (e.g.…”

Section: Resale or Republication Not Permitted Without Written Consenmentioning

confidence: 99%

“…Correspondingly physicochemical factors that affect the availability of the free metal ion in solution have been shown to affect trace metal uptake rates by aquatic invertebrates (Rainbow 1997, Rainbow & Black 2002. Such physicochemical factors include the presence of chelating agents that reduce the availability of free metal ions (Nugegoda & Rainbow 1988, O'Brien et al 1990, Rainbow et al 1993, or changes in salinity that alter concentrations of inorganic anions such as chloride that complex particular metal ions (Nugegoda & Rainbow 1989a,b, Rainbow et al 1993, Rainbow & Black 2002. For example, dissolved cadmium in seawater exists mostly as chloro-complexes (e.g.…”

Section: Introductionmentioning

confidence: 99%

Physicochemistry or physiology: cadmium uptake and effects of salinity and osmolality in three crabs of different ecologies

Rainbow¹,

Black²

2005

Mar. Ecol. Prog. Ser.

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The effects of salinity and osmolality differences on the uptake rates of dissolved cadmium were investigated in 3 crabs of different ecologies -the euryhaline common shore crab Carcinus maenas, the extremely euryhaline Chinese mitten crab Eriocheir sinensis, and a more stenohaline crab, the velvet swimming crab Necora puber. This study tests predictions derived from the interpretations of the authors from a study of Zn uptake by the same crabs, in terms of the balance between physicochemical and counteractive physiological effects controlling trace metal uptake rates from solution. As predicted, reduced salinities caused increases in the cadmium uptake rate of E. sinensis as expected from the free metal ion model, with increased free cadmium ion availabilities in conditions of reduced chloride complexation. In the cases of C. maenas and N. puber, however, decreased salinity was associated with reduced cadmium uptake, a result interpreted in terms of a physiological response by these crabs to low salinity offsetting the physicochemical effect of increased free cadmium ion availability. This physiological response may include reductions in apparent water permeability with reduced salinities. Osmolality experiments showed that the physiological responses made by the crabs to decreases in salinity could not be explained simply by responses to changes in osmotic pressure of the medium. The interaction of physiology and physicochemistry controls rates of trace metal uptake from solution by these ecophysiologically distinct crab species.KEY WORDS: Cadmium uptake · Salinity · Osmolality · Crabs · Carcinus maenas · Eriocheir sinensis · Necora puber Resale or republication not permitted without written consent of the publisherMar Ecol Prog Ser 286: [217][218][219][220][221][222][223][224][225][226][227][228][229] 2005 al. 1990, Rainbow et al. 1993), or changes in salinity that alter concentrations of inorganic anions such as chloride that complex particular metal ions (Nugegoda & Rainbow 1989a,b, Rainbow et al. 1993, Rainbow & Black 2002. For example, dissolved cadmium in seawater exists mostly as chloro-complexes (e.g. CdCl + , CdCl 2 0 , CdCl 3 -) with only a small percentage (ca 2.5%) as the free Cd ++ ion (Zirino & Yamamoto 1972, Mantoura et al. 1978, Bruland 1983, Rainbow et al. 1993. Reductions in salinity reduce the amount of chloride present and increase the percentage of dissolved cadmium present as the free metal ion (Rainbow et al. 1993). Such physicochemical effects on the rates of uptake of trace metals by invertebrates are independent of the invertebrates themselves (Rainbow 1997, Rainbow & Black 2002.On the other hand, some aquatic invertebrates can affect the rate of trace metal uptake from solution by making a physiological response to changes in the medium, for example to salinity reduction (Rainbow et al. 1993, Rainbow & Kwan 1995, Rainbow & Black 2002. Such physiological intercession that affects trace metal uptake rates is by no means a universal feature of aquatic invertebrates, and see...

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Effects of salinity changes on zinc uptake and regulation by the decapod crustaceans Palaemon elegans and Palaemonetes varians

Cited by 81 publications

References 16 publications

Accumulation of Cd, Cu, Pb, and Zn in water, sediments, and mangrove crabs (Sesarma mederi) in the upper Gulf of Thailand

Accumulation of Cd, Cu, Pb, and Zn in water, sediments, and mangrove crabs (Sesarma mederi) in the upper Gulf of Thailand

Uptake and loss kinetics of Cd, Cr and Zn in the bivalves Potamocorbula amurensis and Macoma balthica:effects of size and salinity

Physicochemistry or physiology: cadmium uptake and effects of salinity and osmolality in three crabs of different ecologies

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