Please use this identifier to cite or link to this item:
https://repositorio.ufba.br/handle/ri/16563
metadata.dc.type: | Artigo de Periódico |
Title: | Effects of a red tide on the structure of estuarine fish assemblages in northeastern Brazil |
Other Titles: | International Review of Hydrobiology |
Authors: | Reis Filho, José Amorim Silva, Eduardo Mendes da Nunes, José de Anchieta Cintra da Costa Barros, Francisco |
metadata.dc.creator: | Reis Filho, José Amorim Silva, Eduardo Mendes da Nunes, José de Anchieta Cintra da Costa Barros, Francisco |
Abstract: | The present study evaluated changes in an estuarine fish community caused by blooms of the dinoflagellate Akashiwo sanguinea. Samples were collected before, during and after the red tide using seine nets and surface and bottom nets in three areas near the affected area. The area was around the mouth of the Paraguaçu River. A total of 144 samples were collected, containing 1,989 individuals, with a total weight of 51.4 kg, belonging to 42 species in 29 families. During the red tide, fish density, richness and biomass decreased significantly. Atherinella brasiliensis and Sphoeroides greeleyi were the most abundant species during the red tide, indicating some possible resistance to the effects of the red tide. One month after the red tide, there was a rapid recovery of the density, biomass and richness of fish, and Cetengraulis edentulus was the most captured species. An important result of the present study is the finding that the dynamics of small populations of fish are often influenced by fortuitous events, and stochasticity may dominate. The establishment of a continuous and adequate monitoring program in the area may contribute to understanding the effects of red tides on fish population dynamics. |
Keywords: | Akashiwo sanguinea Fish mortality Red tide Todos os Santos Bay |
metadata.dc.rights: | Acesso Aberto |
URI: | http://repositorio.ufba.br/ri/handle/ri/16563 |
Issue Date: | 2012 |
Appears in Collections: | Artigo Publicado em Periódico (Biologia) |
Files in This Item:
There are no files associated with this item.
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.