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

• Type: Article in International Scientific Journal
• Date: 2007

Authors

Joana Osswald (Author) Other; Sandra Rellan (Author) Other; Antonio Paulo Carvalho (Author) FCUP; Ana Gago (Author) Other; Vitor Vasconcelos (Author) FCUP

Journal

Title: Toxicon

Vol. 49

Pages: 693-698

ISSN: 0041-0101

Publisher: Elsevier

Indexing

ISI Web of Knowledge - 50 Citations

Scopus - 56 Citations

Scientific classification

FOS: Medical and Health sciences > Basic medicine

Other information

Authenticus ID: 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.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 6