Use of the flooded forest by fish assemblages in lakes of the National Park of Anavilhanas (Amazonas, Brazil)

Abstract

ResumoAvaliamos a diversidade e a distribuição de espécies de peixes em dois habitats: floresta alagada e água aberta de lagos do rio Negro. Três amostragens foram realizadas em quatro lagos do Arquipélago de Anavilhanas, em 2009 e 2010. Em geral, a diversidade de espécies foi maior na floresta alagada e durante a noite. A análise de correspondência indicou que predadores estavam mais ativos a noite nos dois habitats. Onívoros, filtradores e detritívoros foram mais capturados durante o dia.

Checklist of the ichthyofauna of the Rio Negro basin in the Brazilian Amazon

“…180 fish species that were donated to the Museum of Natural History of London; such pictorial records were later found in the museum archives and published in a book by Toledo-Piza Ragazzo (2002). In addition to the seminal work of Goulding et al (1988), more recent studies have provided complementary information regarding the Rio Negro fish fauna, which include ecological studies of the main river channel (Chao et al 2001; Thomé-Souza and Chao 2004; Ferreira et al 2007; Rapp Py-Daniel et al 2017), lakes and flooded forest areas (igapós) (Garcia 1993; Saint Paul et al 2000; Soares and Yamamoto 2005; Ferreira et al 2007; Noveras et al 2012; Yamamoto et al 2014; Farias et al 2017; Beltrão and Soares 2018), seasonal beaches and rapids (Lima et al 2005; Ferreira et al 2007), streams and small marginal ponds (Knöppel 1970; Silva 1993, 1995; Mendonça et al 2005; Pazin et al 2006; Anjos and Zuanon 2007; Zuanon et al 2015; Beltrão and Soares 2018), interfluvial swamps (Chao and Prada-Pedreros 1995), flooded Savannah-like areas (Ferreira et al 2007), as well as ichthyofaunal inventories of specific tributaries (Henderson and Walker 1986; Chao and Prada-Pedreros 1995; Zuanon et al 1998; Lima et al 2005; Ferreira et al 2007; Zuanon et al 2008; Kemenes and Forsberg 2014; Rapp Py-Daniel et al 2017). This study aimed to make a comprehensive survey of the fish species present in the Rio Negro basin, as well as to analyze the fish diversity associated to the different aquatic environments present in the basin (Goulding et al 1988).…”

Seasonality of the feeding behavior and condition factor of Anchovia surinamensis in the floodplains of the Madeira River (Rondônia, Brazil)

“…Anchovia surinamensis is often considered to be a planktivorous species (Noveras et al, 2012), possibly because most fish of the family Engraulidae have denticles in the gill rakers (Bornbusch, 1988). These structures function as "combs" and allow the retention of small items during the passage of water between the mouth and the gill chambers, as well as serving as a criterion for the definition of the ecomorphological guild of filter fish (Winemiller, 1991).…”

Influence of abiotic factors on the composition of fish assemblages in the Aracá-Demeni sub-basin of the middle Negro River

“…The study was carried out in a sub-basin of the Middle Negro River that is formed by two main tributaries: the Demeni and Aracá Rivers (Figure 1). They are an environment that has high fish diversity (Beltrão et al, 2019) since they are formed by different habitats such as small streams, tributary rivers, seasonal beaches, lakes, and seasonally flooded forests (Noveras et al, 2012). The Demeni River has limnological characteristics that are distinct from other rivers of the Negro River basin, and presents clear water, with a higher suspended sediment load when compared to the blackwater rivers of the same watershed basin.…”