TOXIGENIC CYANOBACTERIA IN VOLCANIC LAKES AND HOT SPRINGS OF A NORTH ATLANTIC ISLAND (S. MIGUEL, AZORES, PORTUGAL)

• Tipo: Artigo em Revista Científica Internacional
• Data: 2011

Autores

moreira, c (Autor) Outra; martins, a (Autor) Outra

Revista

Título: Fresenius Environmental Bulletin

Vol. 20

Páginas: 420-426

ISSN: 1018-4619

Editora: Technische Universitat Munchen

Indexação

ISI Web of Knowledge - 6 Citações

Scopus - 5 Citações

Classificação Científica

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

Outras Informações

ID Authenticus: P-002-YM0

Abstract (EN): Increased occurrence of blooms of cyanobacteria producing toxins due to eutrophication of lakes and rivers has been alerting the world to the problem of water quality, because of the risk they pose to environmental and animal health. In this study, we sampled cyanobacteria from volcanic lakes and hot springs of the North Atlantic S. Miguel Island (Azores, Portugal), and identified them using a molecular approach. Cyanobacteria were also scanned for the presence of toxigenicity using specific primers targeting genes involved with toxin production. Sequences of 16S rDNA were related to six genera: Microcoleus, Leptolyngbya, Limnothrix, Microcystis, Pseudanabaena, and Gloeothece, being similar to those of other volcanic areas in Mexico, Australia and Hawaii. In some of the samples, genes responsible for the production of the toxins microcystin, cylindrospermopsin and saxitoxin were identified, indicating the potential toxicity of the species.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 7