Structure of the parasite community of two autochthonous species of fish from the RPPN mouth of Aguapeí River, Upper Paraná River

Author(s)

Priscilla de Oliveira Fadel Yamada

• Document type: Master's Dissertation
• Press: Botucatu. 2016-04-18.
• Institution: Universidade Estadual Paulista (Unesp). Instituto de Biociências. Botucatu
• Defense date: 2016-02-24
• Advisor: Luciano Alves dos Anjos; Reinaldo José da Silva

Abstract

The Neotropical region is recognized by high diversity of freshwater fish, with approximately 6,025 species. Of that total, 66% are distributed in the Brazilian rivers reflecting the high diversity of aquatic ecosystems available. The river-floodplains systems are ecosystems that contributed to this megadiversity due to environmental complexity. The Reserva de Particular Patrimônio Nacional (RPPN) from the Mouth of Aguapeí River is one of these rich and complexity aquatic ecosystems. It is influenced by floods that change the environments, shaping the composition and structure of fish parasites of this location. Among the fishes of this region, the Siluriformes Auchenipterus osteomystax and Parauchenipterus galeatus exhibit biological and ecological similarities. Its parasite fauna have been listed and used to test the dry and rainy season effects on the composition and structure of these communities. The present study compares the effects of these seasons on levels of parasitism of these hosts. The previous studies corroborate the relevance of spatial and temporal dynamics of the flood pulse in these ecosystems to maintenance of diversity. Finally, the anthropic actions imposed by regional hydroelectric power could direct affect the biological condition and fish recruitment, influencing the host-parasite interaction. (AU)

• FAPESP's process: 13/25786-7 - Parasite community structure of two species of native fish from RPPN Foz do Rio Aguapeí, Upper Rio Paraná
• Grantee: Priscilla de Oliveira Fadel Yamada
• Support Opportunities: Scholarships in Brazil - Master