Abstract
As part of a larger project that aimed to determine the factors that regulate fish productivity in a clear water river of the Atlantic rainforest, São Paulo State, Brazil, composition and the trophic structure of the fish community of the middle course of the river were studied from January 1995 to May 1996. Of the 17 species collected, Mimagoniates microlepis, Schizolecis guentheri, Phalloceros caudimaculatus and Kronichthys heylandi accounted for 83.2% of the total fish abundance. Most of the species were insectivorous (35.7%), followed by detritivores (21.4%), benthivores (14.2%), omnivores (14.2%), herbivores (7.1%), and piscivores (7.1%). Results of food overlap analysis as calculated by the Index of Morisita showed that 17.5% of the species pairs overlapped. Habitat segregation, however was observed among most of the species, suggesting some degree of food partitioning. Despite the characteristics of this escarpment river, which produces spates year round, no seasonal variation in diet was observed, suggesting that although food abundance may fluctuate throughout the year, most items are in constant supply. The importance of allochthonous food was considered and it appears that, though only a few species feed on this source (including detritivores), they make up 87.2% of the total fish abundance. The low abundance of most of the fishes, the high number of endemic species and the strong dependence of the species on a few food resources suggest that these systems are sensitive to anthropogenic impacts and require future studies.
Similar content being viewed by others
References
Angermeier, P.L. & J.R. Karr. 1983. Fish communities along environmental gradients in a system of tropical streams. Env. Biol. Fish. 9: 117–135.
Böhlke, J.E., S.H. Weitzman & N.A. Menezes. 1978. Estado atual da sistemética dos peixes deágua doce daAmérica do Sul. Acta Amazonica 8: 657–677.
Britski, H. 1972. Peixes de égua doce do Estado de São Paulo. pp. 79-108. In: Poluição e Piscicultura, Fac.Saúde Pública da Universidade de São Paulo e Instituto de Pesca, São Paulo.
Buck, S. & I. Sazima. 1995. An assemblage of mailed catfishes (Loricariidae) in southeastern Brazil: distribution, activity and feeding. Ichthyol. Explor. Freshwaters 6: 325–332.
Buck, S. 2000. Alimentação e reprodução em peixes Siluriformes (Teleostei) em um rio da Mata Atlântica, Alto Ribeira, São Paulo. Ph.D. Thesis, Universidade de São Paulo, São Paulo. 141 pp.
Garutti, V. 1983. Distribuiç ão longitudinal da ictiofauna do cçrrego da Barra Funda, Bacia do Paraná. M.Sc. Thesis, Universidade de São Paulo, São Paulo. 172 pp.
Goldenstein, L.A., 1972. A industrialização da Baixada Santista- estudo de um centro industrial satélite. Ph.D. Thesis, Universidade de São Paulo, São Paulo. 342 pp.
Grossman, G.D., J.F. Dowd, & M. Crawford. 1990. Assemblage stability in stream fishes: a review. Envir. Manag. 14: 661–671.
Henderson, P.A. & I. Walker. 1990. Spatial organization and population density of the fish community of the litter banks within a Central Amazonian blackwater stream. J. Fish Biol. 37: 401–411.
Hynes, H.B.N. 1950. The food of fresh-water sticklebacks (Gasterosteus aculeatus and Pygosteus pungitius), with a review of methods used in the studies of the food of fishes. J. Anim. Ecol. 19: 36–58.
Hyslop, E.P. 1980. Stomach contents analysis: a review of methods and their application. J. Fish Biol. 17: 411–429.
Kawakami, E. & G. Vazzoler. 1980. Método gráfico e estimativa de índice alimentar aplicado no estudo de alimentaç ão de peixes. Bolm. Inst. Oceanogr. 29: 205–207.
Knöppel, H.A. 1970. Food of central Amazonian fishes. Amazoniana 2: 257–352.
Lowe-McConnell, R.H. 1975. Fish communities in tropical freshwaters: their distribution, ecology and evolution. Longman, London. 337 pp.
Mason, B.H. 1971. Princípios de geoquímica. Editora Polígono S.A., São Paulo. 381 pp.
Moyle, P.B. & F.R. Senanayake. 1984. Resource partitioning among the fishes of rainforest streams in Sri Lanka. J. Zool. Lond. 202: 195–223.
Pavanelli, C.S. & E.P. Caramaschi. 1997. Composition of the ichthyofauna of two small tributaries of the Paraná River, Porto Rico, Paraná State, Brazil. Ichtyol. Explor. Freshwaters 8: 23–31.
Ponçano, W.L., C.D.R. Carneiro, C.A. Bistrichi, F.F.M. de Almeida & F.L. Prandini. 1981. Mapa Geomorfol´ogico do Estado de São Paulo, escala 1:50 000. IPT, Monografias 5: 1–94.
Por, F.D. & R.M. Lopes. 1994. The streams of the Atlantic rainforest of Brazil. Verh. int. Verein. Limnol. 25: 1871–1875.
Sabino, J. & J. Zuanon. 1998. A stream fish assemblage in central Amazonia: distribution, activity patterns and feeding behavior. Icthyol. Explor. Freshwaters 8: 201–210.
Sabino, J. & R.M.C. Castro. 1990. Alimentaç ão, período de atividade e distribuiç ão espacial dos peixes de um riacho da floresta Atlântica. Rev. Bras. Biol. 50: 23–36.
Sabino, J. 1999. Comportamento de peixes em riachos: métodos de estudo para uma abordagem naturalística. pp.183–208. In: E.P. Caramaschi, R Mazzoni & P.R. Peres-Neto (ed.) Ecologia de Peixes de Riachos, Série Oecologia Brasiliensis, vol.6, PPGE-UFRJ, Rio de Janeiro.
Santos, E.O. 1965. Características climáticas. pp. 95–150. In: A. Azevedo (ed.) A Baixada Santista-Aspectos Geográficos, I, As bases físicas, EDUSP, São Paulo.
Saul, W.G. 1975. An ecological study of fishes at a site in upper Amazonian Ecuador. Proc. Nat. Acad. Sci. Philad. 127: 93–134.
Uieda, V.S. 1995. Comunidade de peixes em um riacho litorâneo: composiç ão, habitat e hábitos. Ph.D. Thesis, Universidade Estadual de Campinas, Campinas. 229 pp.
Zaret, T.M. & A.S. Rand. 1971. Competition in tropical stream fishes: support for the competitive exclusion principle. Ecology 52: 336–342.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Eichbaum Esteves, K., Lobón-Cerviá, J. Composition and trophic structure of a fish community of a clear water Atlantic rainforest stream in southeastern Brazil. Environmental Biology of Fishes 62, 429–440 (2001). https://doi.org/10.1023/A:1012249313341
Issue Date:
DOI: https://doi.org/10.1023/A:1012249313341