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Energy Sources for Detritivorous Fishes in the Amazon

1986; American Association for the Advancement of Science; Volume: 234; Issue: 4781 Linguagem: Inglês

10.1126/science.234.4781.1256

1095-9203

C. A. R. M. Araújo‐Lima, Bruce R. Forsberg, R. L. Victória, Luiz Antônio Martinelli,

Mercury impact and mitigation studies

Detritivorous fishes form an important part of the ichthyomass in the Amazon basin. Most of these fishes are contained in the orders Characiformes and Siluriformes (catfishes). The Characiformes constitute more than 30% of the total fish yield in the Amazon basin, whereas the catfishes are of minor importance. Stable isotope data indicate that Characiformes species receive most of their carbon through food chains originating with phytoplankton, while the Siluriformes receive a significant part of their energy from other plant sources.