Evidence for contrasting accumulation pattern of cadmium in relation to other elements in Senilia senilis and Tagelus adansoni from the Bijagós archipelago, Guinea-Bissau
| Autor: | Pedro Coelho, José Pedro Granadeiro, Paulo Catry, Quintino Tchantchalam, Eduarda Pereira, Carlos Vale, Teresa Catry, Inês Catry, Pedro M. Lourenço, Rui Monteiro, Lina Carvalho, Paula Figueira, Maria João Botelho |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
0106 biological sciences
Bivalves Geologic Sediments Health Toxicology and Mutagenesis chemistry.chemical_element Intertidal zone 010501 environmental sciences 01 natural sciences Sediments Literacia da informação Senilia senilis West Africa Animals Humans Environmental Chemistry Ecotoxicology Guinea-Bissau 14. Life underwater Cockle Cardiidae Ecosystem Shellfish 0105 earth and related environmental sciences Trace elements Cadmium geography geography.geographical_feature_category biology Ecology 010604 marine biology & hydrobiology Trace element General Medicine biology.organism_classification Pollution Bivalvia Trace Elements Africa Western chemistry Archipelago Seasons Ciência Aberta. Acesso aberto Aluminum Environmental Monitoring |
| Zdroj: | Repositório Científico de Acesso Aberto de Portugal Repositório Científico de Acesso Aberto de Portugal (RCAAP) instacron:RCAAP |
| ISSN: | 1614-7499 0944-1344 |
| DOI: | 10.1007/s11356-017-9902-8 |
| Popis: | Shellfish harvesting in intertidal areas is a widespread and economically important activity in many countries across West Africa. However, in some areas, there is virtually no information concerning the levels of contaminants (and other elements related to nutritional aspects) in the harvested species. We collected sediments and several individuals of the West African bloody cockle Senilia senilis and of the razor clam Tagelus adansoni during the dry season of 2015 nearby three islands in the Bijagós archipelago, Guinea-Bissau. Aluminium, Ca, Fe, Mg, As, Cd, Co, Cr, Cu, Mn, Ni, Pb and Zn were determined in sediments and whole soft tissues of the two bivalves. Sediments showed uniformly low trace element concentrations, pointing to an ecosystem with low levels of trace element contamination. T. adansoni presented higher concentrations of most elements than S. senilis, with the exception of Cd that showed up to 40 times higher values in S. senilis than in T. adansoni from the same sites. Furthermore, Cd concentrations (25±8.7 mg kg(-1), dw) in S. senilis are clearly above the maximum level established for human consumption. Future studies should clarify whether biological factors are the major responsible for this unusual situation. Fundação para a Ciência e a Tecnologia (FCT); MAVA Foundation; info:eu-repo/semantics/publishedVersion |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full text from SpringerLink