Metales en Erizos de Lima (Diadema antillarum) de las costas de la isla de Tenerife (Islas Canarias, España)–Bioindicadores de contaminación marina

  1. Soraya Paz Montelongo 1
  2. Ofelia Dolores Hernández Velázquez 1
  3. Carmen Rubio Armendáriz 1
  4. Ángel Gutiérrez Fernández 1
  5. Dailos González-Weller 2
  6. Enrique García Melón 1
  7. Arturo Hardisson de la Torre 1
  1. 1 Universidad de La Laguna
    info

    Universidad de La Laguna

    San Cristobal de La Laguna, España

    ROR https://ror.org/01r9z8p25

  2. 2 Servicio Canario de Salud. ESP
Journal:
Majorensis: Revista Electrónica de Ciencia y Tecnología

ISSN: 1697-5529

Year of publication: 2017

Issue: 13

Pages: 80-88

Type: Article

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Abstract

he Lime Sea Urchins could be a consistent bioindicator of contaminant metals of the marine environment due to its abundance in Canary Islands coast and their low mobility being representative of the study area. In addition, the consumption of sea urchins is increasing, because of that is necessary to determine the content of potentially toxic metals to assess the risk. Objectives: to determine the metal content in lime urchins, differentiating between exoskeleton (shell) and internal tissue, to assess the environmental contamination degree, studying possible correlations between metal concentration and sizes, to compare the metal content of the different study areas and to assess the toxicological risk through the consumption of that urchins. Material and methods: the content of 6 metals (Mg, Fe, Mn, Cu, Cr, Zn, Ni) was determined in 367 specimens of lima urchin collected from Tenerife island coast by ICP-OES. Results: Fe level (380 mg/kg dry weight) and Mg (9322 mg/kg dw) were higher in the internal tissue and shell, respectively. The highest mean concentration found in internal tissue were recorded in Rapadura area, except for Fe (2262 mg/kg dw) and Mg (2282 mg/kg), which was higher in the Palmmar. Conclusions: the studied species could be used as bioindicators of contamination, due to the correlations found between metal content and sizes as the differences found in the different studied areas. The consumption of lima urchin poses a health risk to human because of the high levels of Fe and Ni.

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