Uptake and transformation of arsenosugars in the shrimp Crangon crangon

Francesconi, Kevin A.; Hunter, Douglas A.; Bachmann, Britta; Raber, Georg; Goessler, Walter

doi:10.1002/(sici)1099-0739(199910)13:10<669::aid-aoc910>3.0.co;2-e

Cited by 30 publications

(10 citation statements)

References 24 publications

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“…Neither this study nor the Larsen study detected arsenosugars in this organism. Studies of As speciation in marine organisms from near-surface environments have reported concentrations of total As in shrimp similar to those found in R. exoculata in this study, and have also reported AB as the dominant As species [7, 45, 46] despite the drastically different food sources of shrimp in photic environments.…”

Section: As Speciationsupporting

confidence: 84%

“…While there has been no strong evidence for biosynthesis of AB ab initio in pelagic marine organisms, there has been recent evidence that some algae contain significant amounts of AB, [6, 20, 54] which may be efficiently accumulated by primary consumers. [1] Uptake of AB has been demonstrated by shrimp, Crangon crangon , [46] and mussels, Mytilus edulis , [55, 56] although AB concentrations in marine flora and seawater are low to undetectable. Uptake and transformation of tri-methylated arsenosugars to AB in vivo has been observed [57] but not at sufficient rates to explain body burden.…”

Section: As Speciationmentioning

confidence: 99%

“…Uptake and transformation of tri-methylated arsenosugars to AB in vivo has been observed [57] but not at sufficient rates to explain body burden. [46] Studies of As species in a tropical [7] and temperate [58] mangrove ecosystem, where mangrove trees, rather than algae, were the primary source of organic matter for primary consumers, showed AB to be the major As species in crustaceans, despite mangrove leaves having low As concentrations with no observed AB. In tropical mangroves, arsenosugar-PO 4 was the dominant species in bivalves, with AB also present, which was attributed to phytoplankton being a major dietary source.…”

Section: As Speciationmentioning

confidence: 99%

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Arsenic speciation in food chains from mid-Atlantic hydrothermal vents

et al. 2012

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Arsenic concentration and speciation were determined in benthic fauna collected from the Mid-Atlantic Ridge hydrothermal vents. The shrimp species, Rimicaris exoculata, the vent chimney-dwelling mussel, Bathymodiolus azoricus, Branchipolynoe seepensis, a commensal worm of B. azoricus, and the gastropod Peltospira smaragdina showed variations in As concentration and in stable isotope (δ13C and δ15N) signature between species, suggesting different sources of As uptake. Arsenic speciation showed arsenobetaine to be the dominant species in R. exoculata, whereas in B. azoricus and B. seepensis arsenosugars were most abundant, although arsenobetaine, dimethylarsinate, and inorganic arsenic were also observed, along with several unidentified species. Scrape samples from outside the vent chimneys, covered with microbial mat, which is a presumed food source for many vent organisms, contained high levels of total As, but organic species were not detectable. The formation of arsenosugars in pelagic environments is typically attributed to marine algae, and the pathway to arsenobetaine is still unknown. The occurrence of arsenosugars and arsenobetaine in these deep sea organisms, where primary production is chemolithoautotrophic and stable isotope analyses indicate food sources are of vent origin, suggests that organic arsenicals can occur in a food web without algae or other photosynthetic life.

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Section: As Speciationsupporting

confidence: 84%

Section: As Speciationmentioning

confidence: 99%

Section: As Speciationmentioning

confidence: 99%

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Arsenic speciation in food chains from mid-Atlantic hydrothermal vents

et al. 2012

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“…Inorganic As species predominate in sediments and water, but, in contrast, organoarsenic compounds prevail in marine organisms [6]. …”

Section: Introductionmentioning

confidence: 99%

Arsenate Retention by Epipsammic Biofilms Developed on Streambed Sediments: Influence of Phosphate

Prieto

Rey

Rubinos

et al. 2013

BioMed Research International

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Natural geological conditions together with the impact of human activities could produce environmental problems due to high As concentrations. The aim of this study was to assess the role of epipsammic biofilm-sediment systems onto As (V) sorption and to evaluate the effect of the presence of equimolar P concentrations on As retention. A natural biofilm was grown on sediment samples in the laboratory, using river water as nutrient supplier. Sorption experiments with initial As concentrations 0, 5, 25, 50, 100, 250, and 500 μg L−1 were performed. The average percentage of As sorbed was 78.9 ± 3.5 and 96.9 ± 6.6% for the sediment and biofilm-sediment systems, respectively. Phosphate decreased by 25% the As sorption capactity in the sediment devoid of biofilm, whereas no significant effect was observed in the systems with biofilm. Freundlich, Sips, and Toth models were the best to describe experimental data. The maximum As sorption capacity of the sediment and biofilm-sediment systems was, respectively, 6.6 and 6.8 μg g−1 and 4.5 and 7.8 μg g−1 in the presence of P. In conclusion, epipsammic biofilms play an important role in the environmental quality of river systems, increasing As retention by the system, especially in environments where both As and P occur simultaneously.

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“…Shrimp (Crangon crangon) have been fed Gly-riboside and TriMeOH but accumulated little of these arsenoribosides (0.9% and 4.2%, respectively), with ∼50% of the TriMeOH being converted to AB. [13] The conversion of TriMeOH to AB indicates that when TriMeOH is produced in situ in marine animals, some conversion to AB would be expected.…”

Section: Introductionmentioning

confidence: 99%

Changes in proportions of arsenic species within an Ecklonia radiata food chain

2008

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Environmental context. The present study examines arsenic species in kelp and associated grazing animals of an Ecklonia radiata food chain. The study focusses on the changes in proportions of arsenoribosides obtained from E. radiata and mechanisms are proposed to explain the transformations of arsenoribosides observed in the organisms that graze on it.Abstract. Total arsenic and arsenic species in the tissues of three growth stages of the macroalgae Ecklonia radiata and within organisms that feed on it are reported. Arsenic concentrations in E. radiata tissues varied from 40 to 153 µg g −1 . Growth stage did not influence arsenic concentrations or arsenic species. E. radiata contained glycerol arsenoriboside (1-8.5%), phosphate arsenoriboside (10-22%) and sulfonate arsenoriboside (73-91%). Arsenic concentrations varied significantly among animal species and between tissues (5-123 µg g −1 ). Animals contained variable quantities of arsenobetaine (14-83%). Haliotis rubra tissues contained high concentrations of glycerol trimethylarsonioriboside (0.7-22%) and the fish Odax cyanomelas contained large quantities of phosphate arsenoriboside (25-64%) with little arsenobetaine (1.5-15%).Arsenoribosides consumed from macroalgae are substantially converted or differentially accumulated as glycerol and phosphate arsenoribosides in animal tissues. In all animals, phosphate arsenoriboside would appear to be conserved or synthesised de novo. In gastropods, glycerol trimethylarsonioriboside and thio arsenic species are formed in the digestive system. Thus, the intermediate arsenic species that form a plausible pathway for the formation of arsenobetaine from dimethylarsenoribosides are present.

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Uptake and transformation of arsenosugars in the shrimp Crangon crangon

Cited by 30 publications

References 24 publications

Arsenic speciation in food chains from mid-Atlantic hydrothermal vents

Arsenic speciation in food chains from mid-Atlantic hydrothermal vents

Arsenate Retention by Epipsammic Biofilms Developed on Streambed Sediments: Influence of Phosphate

Changes in proportions of arsenic species within an Ecklonia radiata food chain

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