Acute effects of an anatoxin-a producing cyanobacterium on juvenile fish - Cyprinus carpio L.

• Tipo: Artigo em Revista Científica Internacional
• Data: 2007

Autores

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

Revista

Título: Toxicon

Vol. 49

Páginas: 693-698

ISSN: 0041-0101

Editora: Elsevier

Indexação

ISI Web of Knowledge - 50 Citações

Scopus - 56 Citações

Classificação Científica

FOS: Ciências médicas e da saúde > Medicina básica

Outras Informações

ID Authenticus: P-004-B36

DOI: 10.1016/j.toxicon.2006.11.010

Abstract (EN): The worldwide increase of eutrophication in fresh water bodies has caused cyanobacterial blooms to be more frequent. Anatoxin-a is a potent neurotoxin known to be produced by several genera of cyanobacteria including Anabaena. In this work, we exposed juvenile carps to freeze-dried cells of a toxic strain of the cyanobacterium Anabaena sp. during a 4-day period. Two different cell density-10(5) and 10(7) cell ml(-1) -were assayed. Lethality and anatoxin-a concentration in the whole fish were determined. In the higher cell density, all fish died between 26 and 29 h after exposure to toxin, whereas in the 10(5) cell ml(-1) density no deaths were observed. Levels of anatoxin-a in the whole fish ranged between 0.031 mu g g(-1) d.w. at the 105 cell ml(-1) concentration and 0.768 mu g g(-1) d.w. at 107 cell ml(-1) . Minor uptake of anatoxin-a occurred.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 6