Detalhes bibliográficos
| Autor(a) principal: |
Azevedo, Rodney Kozlowiski de |
| Data de Publicação: |
2010 |
| Tipo de documento: |
Tese
|
| Idioma: |
por |
| Título da fonte: |
Biblioteca Digital de Teses e Dissertações da UFRRJ |
| Texto Completo: |
https://tede.ufrrj.br/jspui/handle/jspui/1159
|
Resumo: |
The Guandu River is the most important source of water supply for the municipality of Rio de Janeiro and Baixada Fluminense. It is characterized as the river system that has the greatest diversity of fish and the largest biomass of the Basin of the Sepetiba Bay. From April 2003 to September 2009 786 fish specimens, belonging to 21 species from the Guandu River, near the dam of water treatment station (WTS) (22? 48' 32"S, 43? 37'35"W), State of Rio de Janeiro, were collected and analyzed to study the biodiversity of their metazoan parasites, considering the strategic importance of this river in the State of Rio de Janeiro. Seventy percent of the fish were parasitized by at least one metazoan parasite. Of the parasites found 55% were endoparasites and 45% were ectoparasites. A total of 81 parasite species were found, belonging to nine groups: Acanthocephala, Cestoda, Crustacea, Digenea, Hirudinea, Mollusca, Monogenea, Myxozoa and Nematoda. The monogeneans had higher species richness and the metacercariae and nematode larvae had the lowest host specificity. The results of this study indicate that the parasite communities of fishes from Guandu River were characterized by low richness and evenness, isolationist communities and higher values of taxonomic diversity in species of omnivorous fish and in species that forming schools. In this study were made 38 new host records and 25 new locality records, demonstrating the biological diversity of Guandu River. |