Fish associated with aquatic macrophytes in the Chacororé-Sinhá Mariana Lake system and Mutum River, Pantanal of Mato Grosso, Brazil

Brazilian Journal of Biology

Eb. Pacheco¹  Cj. Da-silva¹ 

[1] ,Universidade Federal de Mato Grosso Programa de Graduação em Ecologia e Conservação da Biodiversidade Instituto de BiociênciasCuiabá MT ,Brazil

关键词: Pantanal;    fish ecology;    aquatic macrophytes;    Characiformes;    Pantanal;    ecologia de peixes;    macrófitas aquáticas;    Characiformes;   

DOI  :  10.1590/S1519-69842009000100012

来源: SciELO

【 摘 要 】

On the left bank of the Cuibá River, one of the main tributaries of the Pantanal in Mato Grosso, are located the Chacororé and Sinhá Mariana Lakes and the Mutum River, the littoral regions of which are covered with aquatic macrophytes, dominated by the species Eichhornia crassipes and Eichhornia azurea. To examine the ichthyofauna associated with this vegetation, in the year 2003, 3510 fish were collected, distributed among 83 species, and the limnological variables verified near the macrophyte stands where they were sampled. The most abundant and richest order was the Characiformes, followed by the Gymnotiformes and Siluriformes. Analysis of similarity showed a very low, or null, index that the limnological conditions and morphology of the aquatic macrophyte species provide habitat sufficiently homogeneous to give. The limnological conditions and morphology of the aquatic macrophyte species provide a sufficient habitat heterogeneity to give very low, or null, index values. Thus, environmental conservation measures should be more effective in promoting the conservation of the species, given the high levels of biological diversity found in the habitats studied.

【 授权许可】

CC BY   
 All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License