Chronic effects of Aphanizomenon flos-aquae on the survival and reproduction of daphnids

• Tipo: Artigo em Revista Científica Internacional
• Data: 2004

Autores

de Figueiredo, DR (Autor) Outra; Antunes, SC (Autor) Outra; Pereira, MI (Autor) Outra; Goncalves, FG (Autor) Outra

Revista

Título: Fresenius Environmental Bulletin

Vol. 13

Páginas: 665-670

ISSN: 1018-4619

Editora: Technische Universitat Munchen

Indexação

ISI Web of Knowledge - 6 Citações

Scopus - 7 Citações

Classificação Científica

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

Outras Informações

ID Authenticus: P-000-CS2

Abstract (EN): The ingestion of filamentous cyanobacteria by zooplankton has shown to be affected by several factors such as mechanical interference and cyanotoxins production. The aim of this study was to evaluate the effects of a potentially toxic strain of Aphanizomenon flos-aquae, given as a food source, on the survival and reproduction of Daphnia magna and D. longispina. Test organisms were fed with A. flos-aquae (grown in different concentrations of phosphate) and their life history traits were compared to a control, using Pseudokirchneriella subcapitata as the food source. Results showed that the daphnids tested ingested A. flos-aquae and were able to survive and reproduce during the bioassays, in spite of the significant reproductive impairment on both Daphnia spp.. Results suggest that food quality may not be the main factor controlling the reproductive rate of these daphnids, and cyanobacterial toxins production may be also involved.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 6