Uptake and depuration of anatoxin-a by the mussel Mytilus galloprovincialis (Lamarck, 1819) under laboratory conditions

• Tipo: Artigo em Revista Científica Internacional
• Data: 2008

Autores

Joana Osswald (Autor) Outra; Sandra Rellan (Autor) Outra; Ana Gago (Autor) Outra; Vitor Vasconcelos (Autor) FCUP

Revista

Título: Chemosphere

Vol. 72

Páginas: 1235-1241

ISSN: 0045-6535

Editora: Elsevier

Indexação

ISI Web of Knowledge - 19 Citações

Scopus - 20 Citações

Classificação Científica

FOS: Ciências exactas e naturais > Ciências da terra e ciências do ambiente

Outras Informações

ID Authenticus: P-003-XXK

DOI: 10.1016/j.chemosphere.2008.05.012

Abstract (EN): Cyanobacterial blooms tend to be more common in warm and nutrient-enriched waters and are increasing in many aquatic water bodies due to eutrophication. The aim of this work is to study the accumulation and deputation of anatoxin-a by Mytilus galloprovincialis a widespread distributed mussel living in estuarine and coastal waters and recognized worldwide as a bioindicator (e.g. Mussel Watch programs). Research on the distribution and biological effects of anatoxin-a in M. galloprovincialis is important. Nevertheless, the risk of human intoxication due to the consumption of contaminated bivalves should also be considered. A toxic bloom was simulated in an aquarium with 5 x 10(5) cell ml(-1) of Anabaena sp. (ANA 37), an anatoxin-a producing strain. Mussels were exposed to Anabaena for 15 days and then 15 days of depuration followed. Three or more animals were sampled every 24 h for total toxin quantification and distribution in soft tissues (edible parts). Water samples were also taken every 24 h in order to calculate total dissolved and particulate anatoxin-a concentrations. Anatoxin-a was quantified by HPLC with fluorescence detection. No deaths occurred during accumulation and depuration periods. One day after the beginning of deputation, the toxin could not be detected in the animals. Anatoxin-a is distributed in the digestive tract, muscles and foot and is probably actively detoxified.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 7