Copper, Zinc and Lead Bioaccumulation in Marine Snail, Strombus gigas, from Guacanayabo Gulf, Cuba

Rizo, Oscar Díaz; Reumont, Susana Olivares; Viguri, Javier R.; Arado, Oscar Díaz; Pino, Neivy López; Rodríguez, Katia D ́Alessandro; López, Juana O. Arado; Rudnikas, Alina Gelen; Carballo, Gustavo Arencibia

doi:10.1007/s00128-010-0093-y

Cited by 6 publications

(1 citation statement)

References 5 publications

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“…The results of Chapter Two show that Jasus edwardsii accumulates both essential and non-essential metals, however despite it being a commercially successful species it was not included as a target species in the water quality guidelines used in New Zealand and Australia. These results show how variable uptake of metal contaminants is, and that bioaccumulation rates vary between species and types of metal, which, combined with the ability of invertebrates to detoxify metals themselves (to an extent), makes it hard to establish toxicity thresholds (Rizo et al, 2010;Rainbow et al, 2015). It is therefore important to analyse a range of species when setting contamination guidelines.…”

Section: Discussionmentioning

confidence: 99%

Trace metal accumulation in decapods and its use in monitoring the marine environment

Graham¹

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<p>Coastal habitats are susceptible to severe contamination due to their exposure to both marine and terrestrial inputs, many of which contain toxic heavy metals. Trace metals in the marine environment can have severe impacts on the health of coastal ecosystems, as even those with essential functions can be toxic at high concentrations, and non-essential elements can cause impairment of biological functions even at low levels. It is important to understand the chemistry of New Zealand’s marine environment, in order to successfully monitor any changes to the chemical profile of the environment from anthropogenic pollutants. Biological indicators are a useful tool for monitoring ecosystem health, and the impact of human activity on the environment. Crustaceans fulfil all the criteria of being good environmental indicators, as well as having a range of feeding strategies, and being present at multiple trophic levels. The aim of this research was to 1) investigate spatial variation and the effect of urbanisation in trace metal concentration in two native decapod species, Heterozius rotundifrons and Petrolisthes elongatus, which co-occur but feed at different trophic levels; and 2) examine how essential and non-essential trace metals are accumulated into different body tissues of the decapod Jasus edwardsii, a significant cultural and fishery species. To assess spatial variation and trophic level differences between decapods, baseline data of the concentrations of thirty trace metals was collected and analysed from both species at three sites in the Wellington region. Little variation was found between the sites, despite their differences in proximity to urban development, but significant differences were found between species, with the consumer H. rotundifrons having higher concentrations of most trace metals than the filter feeder P. elongatus. To assess trace metal accumulation into tissues of J. edwardsii, an experiment was run exposing juveniles to water doped with an elevated copper and neodymium treatment. Copper was preferentially accumulated into the organ tissue, as was expected for an essential element. Neodymium was accumulated differentially into organ and exoskeleton tissue depending on the treatment, with specimens in the elevated treatment taking it up into the shell rather than the organs. A second experiment was also run to investigate whether moulted exoskeletons would passively absorb copper from their environment, which was shown to be the case. This research aids in understanding the importance of multiple species monitoring, as trace element accumulation was shown to be highly variable depending on species and metals, and contributes valuable geochemical data on native New Zealand species, which have been little studied in this context.</p>

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Section: Discussionmentioning

confidence: 99%

Trace metal accumulation in decapods and its use in monitoring the marine environment

Graham¹

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The potential role of spherocrystals in the detoxification of essential trace metals following exposure to Cu and Zn in the fighting conch Strombus (Lobatus) pugilis

Volland¹,

Bustamante

Aranda

et al. 2018

Biometals

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Crypt cells-one of the three cell types composing Strombidae digestive tubules-are characterized by the presence of numerous metal-containing phosphate granules termed spherocrystals. We explored the bioaccumulation and detoxification of metals in Strombidae by exposing wild fighting conch Strombus pugilis for 9 days to waterborne CuSO and ZnSO. The total amount of Cu and Zn was determined in the digestive gland and in the rest of the body by Inductively Coupled Plasma (ICP) analyses. The digestive gland spherocrystal metal content was investigated based on the semi-quantitative energy dispersive X-ray (EDX) elemental analysis. ICP analyses of unexposed individuals revealed that 87.0 ± 5.9% of the Zn is contained in the digestive gland, where its concentration is 36 times higher than in the rest of the body. Regarding Cu, 25.8 ± 16.4% of the metal was located in the digestive gland of the control individuals, increasing to 61.5 ± 16.4% in exposed individuals. Both Cu and Zn concentrations in the digestive gland increased after exposures, pointing to a potential role of this organ in the detoxification of these metals. EDX analysis of spherocrystals revealed the presence of Ca, Cl, Fe, K, Mg, P, and Zn in unexposed individuals. No difference was found in the relative proportion of Zn in spherocrystals of exposed versus control individuals. Contrastingly, copper was never detected in the spherocrystals from controls and Zn-exposed individuals, but the relative proportion of Cu in spherocrystals of Cu-exposed individuals varied from 0.3 to 5.7%. Our results show the direct role of spherocrystals in Cu detoxification.

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The Queen Conch (Lobatus gigas) Proteome: A Valuable Tool for Biological Studies in Marine Gastropods

et al. 2019

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Copper, Zinc and Lead Bioaccumulation in Marine Snail, Strombus gigas, from Guacanayabo Gulf, Cuba

Cited by 6 publications

References 5 publications

Trace metal accumulation in decapods and its use in monitoring the marine environment

Trace metal accumulation in decapods and its use in monitoring the marine environment

The potential role of spherocrystals in the detoxification of essential trace metals following exposure to Cu and Zn in the fighting conch Strombus (Lobatus) pugilis

The Queen Conch (Lobatus gigas) Proteome: A Valuable Tool for Biological Studies in Marine Gastropods

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