Fish were studied in two river basins (Corumbataí and Jacaré-Pepira) subjected to strong human pressure, in the interior of the State of São Paulo, southeastern Brazil. In the Corumbataí basin, four sites were sampled: Cabeça river, Lapa stream, Passa-Cinco river, and Corumbataí river; in the Jacaré-Pepira basin, three sites were sampled: Tamanduá stream, Jacaré-Pepira river, and Água Branca stream. A total of 4,050 specimens belonging to 48 species and 13 families were caught and analyzed

Braga, F. M. S.

Gomiero, L. M.

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Check List 2(1) ISSN: 1809-127X  LISTS OF SPECIES  Fish, Corumbataí and Jacaré-Pepira river basins, São Paulo State, Brazil  Leandro Muller GomieroFrancisco Manoel de Souza Braga  Universidade Estadual Paulista (UNESP), Departamento de Zoologia, Instituto de Biociências, CEP 13506-900, Av. 24 A, 1515, Rio Claro, São Paulo, Brasil. E-mail: leanmg@rc.unesp.br  Abstract Fish were studied in two river basins (Corumbataí and Jacaré-Pepira) subjected to strong human pressure, in the interior of the State of São Paulo, southeastern Brazil. In the Corumbataí basin, four sites were sampled: Cabeça river, Lapa stream, Passa-Cinco river, and Corumbataí river; in the Jacaré-Pepira basin, three sites were sampled: Tamanduá stream, Jacaré-Pepira river, and Água Branca stream. A total of 4,050 specimens belonging to 48 species and 13 families were caught and analyzed.  Introduction The Neotropical region is particularly interesting because it is a refuge for fish speciation (Mazzoni and Lobón-Cerviá 2000). In Brazil, the second most important basin in terms of area and fish diversity is the Paraná-Paraguai-Uruguai (Prata) basin, which contains approximately 500 species. The State of São Paulo contains about 30% of the known Brazilian fish species, with 261 freshwater species distributed as follows: 53% Siluriforms, 35% Characiforms, 4% Gymnotiforms, 5% Cyprinodontiforms, and 3% Perciforms. This State is located in the upper Paraná river basin, which contains 22 fish families and approximately 166 fish species (Castro and Menezes 1998). Although ecological knowledge of stream fish assemblages is still incipient, the frequency of species occurrence appears to be influenced by the preference of species for certain sites, the ontogenetic stage of the individuals, and the seasonal plasticity of each habitat (Lemes and Garutti 2002a).    Materials and Methods A total of 12 samples were made bimonthly, from February to December, in 2000 and 2001. We determined two study sites: 1. Corumbataí river basin, with four sample sites: 1.a. Cabeça river (22º22’49" S, 47º39’55" W), 1.b. Lapa stream (22º23’38" S, 47º47’16" W), 1.c. Passa-Cinco river (22º25’02" S, 47º42’47" W), and 1.d. Corumbataí river (22º08’15" S, 47º39’37" W); and 2. Jacaré-Pepira river basin, with three sample sites: 2.a. Tamanduá stream (22º21’17" S, 47º45’00" W), 2.b. Jacaré-Pepira river (22º17’53" S, 48º11’35" W), and 2.c. Água Branca stream (22º26’20" S, 48º47’45" W). Both drainage systems exhibited low similarity due to a great habitat variability and differences in environmental conditions. An altitude tropical climate (CWa) predominates in the region, which is characterized by mean annual temperatures ranging from 18°C to 22°C, with warm wet summers and dry winters. Rainfall varies from 1,400 mm, in the upper regions, to 1,100 mm. The study area of approximately 2,700 km² comprises part of the municipalities of Itirapina, Brotas, São Pedro, Dois Córregos, Santa Maria da Serra, Torrinha, São Carlos, Analândia, Ipeúna, Mineiros do Tietê, Rio Claro, Barra Bonita, Corumbataí, and Itaqueri da Serra (see maps in Gomiero and Braga 2005). At each sample point, individuals were collected in many parts of the river, using 5 m long by 1.5 m high gill nets with mesh sizes of 1.5; 2.0; 2.5, and 3.0 cm, measured between adjacent knots. Each set of nets totalized 30 m2.  Whenever possible, 1.5 m high purse seines with mesh sizes of 1.5 cm, sieves, and traps were also used. The sampling work was standardized to a constant time and number of fishing instruments employed at each point. In the laboratory, fishes were identified up to the lowest taxonomic level. Voucher specimens of each species are deposited in the fish collection of the Departamento de Zoologia of the Universidade Estadual Paulista, Rio Claro (SP).  Results and Discussion A total of 4,050 specimens belonging to 48 species and 13 families were caught and analyzed. Families and species names, with their respective occurrence sites, are listed in Table 1. The fish families recorded in this study were: Characidae, Crenuchidae, Parodontidae, Curimatidae,   57Check List 2(1) ISSN: 1809-127X  LISTS OF SPECIES  Anostomidae, Erythrinidae, Sternopygidae, Pimelodidae, Doradidae, Callichthyidae, Loricariidae, Poeciliidae, and Cichlidae (Appendix I). The taxonomic predominance of the orders Siluriformes and Characiformes in the Corumbataí river basin and Jacaré-Pepira river basin agrees with the expected ichthyofaunistical composition for non-estuarine rivers in the Neotropical region (Lowe-McConnell 1987). As observed by Uieda (1984) in the Tabajara stream (SP), the most abundant species were found at the sample sites throughout the study period, with the families Characidae and Loricariidae being the most frequent. Lemes and Garutti (2002b) and Casatti et al. (2001) observed a similar species distribution pattern in streams of the Paraná river basin, with the predominance of Siluriformes and Characiformes. The species Serrasalmus spilopleura Kner, 1858, Aequidens portoalegrensis (Hensel, 1870), Moenkhausia sanctae-filomenae (Steindachner, 1907), Moenkhausia intermedia (Eigenmann, 1908), Gymnotus carapo Linnaeus, 1758, Leporinus lacustris  Amaral Campos, 1945, Piabina argentea,  Pimelodus maculatus Jardine & Schomburgk, 1841, Prochilodus lineatus Steindachner, 1881 and Pseudopimelodus zungaro (Humboldt & Valenciennes, 1821) were collected by Barrella et al. (1994) in the Jacaré-Pepira river. However, these species were not collected in this study, most likely because of the more restricted collection area or possibly due to alterations in the ichthyofauna.   Table 1. Fish species from the Corumbataí (*) and Jacaré-Pepira (**) river basins. Cynopotaminae CHARACIFORMES Galeocharax knerii (Steindachner, 1879) (**) AcestrorhynchinaeAcestrorhynchus lacustris (Lütken, 1875) (**) PARODONTIDAE Apareiodon piracicabae (Eigenmann, 1907) (*) (**) Apareiodon ibitiensis Campos, 1944 (*) Parodon nasus Kner, 1859 (*) CURIMATIDAE Steindachnerina insculpta (Fernández-Yépez,1948) (*) (**) Cyphocarax modestus (Fernández-Yépez, 1948) (*) (**) ANOSTOMIDAE Leporinus friderici (Bloch, 1794) (*) (**) Leporinus obtusidens (Valenciennes, 1836) (*) Schizodon nasutus Kner, 1858 (**) ERYTHRINIDAE Hoplias cf. malabaricus (Bloch, 1794) (*) (**) CRENUCHIDAE Characidium aff. zebra (Eigenmann, 1909) (*) (**) CHARACIDAE Tetragonopterinae Astyanax altiparanae Garutti & Britski, 2000 (*) (**) Astyanax scabripinnis (Jenyns, 1842) (*) (**) Astyanax fasciatus (Cuvier, 1819) (*) (**) Astyanax eigenmaniorum (Cope, 1894) (*) (**) Astyanax sp. (*) Piabina argentea Reinhardt, 1867 (*) Bryconamericus sp. (*) Cheirodontinae Serrapinus cf. notomelas (Eigenmann, 1915) (*) (**) Serrapinus heterodon (Eigenmann, 1915) (*) (**) Odontostilbe microcephalus Eigenmann, 1907 (*) Salminae Salminus hilarii Valenciennes, 1850 (**) SILURIFORMES PIMELODIDAE Rhamdia quelen (Quoy & Gaimard, 1824) (*) (**) Pimelodella sp.1. (*) (**) Pimelodella sp.2. (**) Imparfinis mirini Haseman, 1911 (*) LORICARIIDAE Loricariinae Rineloricaria latirostris (Boulenger, 1900) (*) (**) Rineloricaria sp. (*) Loricaria piracicabae Ihering, 1907 (**) Hypoptopomatinae Hisonotus sp. (*) (**) Corumbataia cuestae Britski, 1997 (*) Hypostominae Hypostomus strigaticeps (Regan, 1908) (*) (**) Hypostomus ancistroides (Ihering, 1911) (*) (**) Hypostomus albopunctatus (Regan, 1908) (*) Hypostomus sp.1. (*) (**) Hypostomus sp.2. (*) (**) Hypostomus regani (Ihering, 1905) (*) (**) Hypostomus cf. regani (Ihering, 1905) (**) DORADIDAE Rhinodoras dorbignyi (Kner, 1855) (**) CALLICHTHYIDAE Corydoras flaveolus Ihering, 1911 (*) (**) Corydoras aeneus (Gill, 1858) (*) Hoplosternum littorale (Hancock, 1828) (*)   58Check List 2(1) ISSN: 1809-127X  LISTS OF SPECIES   GYMNOTIFORMES  STERNOPYGIDAE  CYPRINODONTIFORMES  POECILIIDAE Eigenmannia cf. trilineata (López & Castello, 1966) (*)  Poecilia reticulata (Peters, 1860) (*)  PERCIFORMES CICHLIDAE Phalloceros caudimaculatus (Hensel, 1868) (*) (**) Geophagus brasiliensis Kner, 1865 (*) (**) Oreochromis niloticus (Linnaeus, 1758) (*)    Acknowledgements The authors wish to thank FAPESP (99/07209-3) for financial support, IBAMA, and especially Dr. H. Britski for identifying the fish species.  Literature Cited Barrella, W., Beaumord, A. C. and Petrere Jr., M. 1994. Comparacion de la comunidad de peces de los rios Manso (MT) y Jacare pepira (SP), Brasil. Acta Biol. Venez. 15(02): 11-20. Casatti, L., Langeani, F. and Castro, R. M. C. 2001. Peixes de riacho do Parque Estadual Morro do Diabo, bacia do alto rio Paraná, SP. Biota Neotropica. 1: 1-15. Castro, R. M. C. and Menezes, N. A. 1998. Estudo diagnóstico da diversidade de peixes do Estado de São Paulo. In: Castro, R. M. C. (ed.) Biodiversidade do Estado de São Paulo: síntese do conhecimento ao final do século XX. Volume 6: Vertebrados. São Paulo: Fapesp, Biota: 3-13. Gomiero, L. M. and Braga, F. M. S. 2005. The condition factor of fishes from two river basins in São Paulo state, Southeast of Brazil. Acta Scientiarum. 27(01): 73-78. Lemes, E. M. and Garutti, V. 2002a. Ecologia da ictiofauna de um córrego de cabeceira da bacia do Alto rio Paraná, Brasil. Iheringia. 92(3): 69-78. Lemes, E. M. and Garutti, V. 2002b. Ictiofauna de poção e rápido em um córrego de cabeceira da bacia do Alto rio Paraná. Comun. Mus. Ciênc. Tecnol. 15(2): 175-199. Lowe-McConnell, R.H. 1987. Ecological studies in tropical fish communities. Cambridge University, Cambridge. Mazzoni, R. and Lobón-Cerviá, J. 2000. Longitudinal structure, density and production rates of a neotropical stream fish assemblage: the river Ubatiba in the Serra do Mar, southeast Brazil. Ecography. 23: 588-602. Uieda, V. S. 1984. Ocorrência e distribuição dos peixes em um riacho de água doce.  Rev. Brasil. Biol. 44(2): 203-213.    Received March 2006 Accepted June 2006 Published online June 2006    59Check List 2(1) ISSN: 1809-127X  LISTS OF SPECIES  Appendix I. Fish species from the Corumbataí and Jacaré-Pepira river basins.  CHARACIFORMES PARODONTIDAE                       1. Apareiodon piracicabae                           2. Apareiodon ibitiensis      3. Parodon nasus  CURIMATIDAE                     4. Steindachnerina insculpta               5. Cyphocarax modestus   ANOSTOMIDAE                           6. Leporinus  friderici               7. Leporinus obtusidens   60Check List 2(1) ISSN: 1809-127X  LISTS OF SPECIES            8. Schizodon nasutus      ERYTHRINIDAE                      CRENUCHIDAE                   9. Hoplias cf. malabaricus                                              10. Characidium aff. zebra CHARACIDAE Tetragonopterinae                      11. Astyanax altiparanae                                                 12. Astyanax scabripinnis                          13. Astyanax fasciatus                         14. Astyanax eigenmaniorum     61Check List 2(1) ISSN: 1809-127X  LISTS OF SPECIES   62                       15. Astyanax sp.                    16. Piabina argentea      17. Bryconamericus sp.   Cheirodontinae                     18. Serrapinus cf. notomelas              19. Serrapinus heterodon      20. Odontostilbe microcephalus      Check List 2(1) ISSN: 1809-127X  LISTS OF SPECIES               Salminae                       Cynopotaminae                      21. Salminus hilarii                  22. Galeocharax knerii  Acestrorhynchinae      23. Acestrorhynchus lacustris  SILURIFORMES PIMELODIDAE                                24. Rhamdia quelen                    25. Pimelodella sp.1.                           26. Pimelodella sp.2.                   27. Imparfinis mirini   63Check List 2(1) ISSN: 1809-127X  LISTS OF SPECIES  LORICARIIDAE Loricariinae                          28. Rineloricaria latirostris                    29. Rineloricaria sp.           30. Loricaria piracicabae  Hypoptopomatinae                                  31. Hisonotus sp.                 32. Corumbataia cuestae  Hypostominae                        33. Hypostomus strigaticeps            34. Hypostomus ancistroides    64Check List 2(1) ISSN: 1809-127X  LISTS OF SPECIES                     35. Hypostomus albopunctatus                              36. Hypostomus sp.1                             37. Hypostomus sp.2                  38. Hypostomus regani           39. Hypostomus cf. regani   DORADIDAE      40. Rhinodoras dorbignyi      65Check List 2(1) ISSN: 1809-127X  LISTS OF SPECIES  CALLICHTHYIDAE                           41. Corydoras flaveolus                               42. Corydoras aeneus           43. Hoplosternum littorale  GYMNOTIFORMES STERNOPYGIDAE           44. Eigenmannia cf. trilineata  PERCIFORMES CICHLIDAE                            45. Geophagus brasiliensis               46. Oreochromis niloticus   66Check List 2(1) ISSN: 1809-127X  LISTS OF SPECIES  CYPRINODONTIFORMES POECILIIDAE                      47. Poecilia reticulata                        48. Phalloceros caudimaculatus   67

Fish, Corumbataí and Jacaré-Pepira river basins, São Paulo State, Brazil

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