| Full text | |
| Author(s): |
Francisco Langeani
[1]
;
Ricardo Macedo Corrêa e Castro
[2]
;
Osvaldo Takeshi Oyakawa
[3]
;
Oscar Akio Shibatta
[4]
;
Carla Simone Pavanelli
[5]
;
Lilian Casatti
[6]
Total Authors: 6
|
| Affiliation: | [1] Universidade Estadual Paulista. Departamento de Zoologia e Botânica. Laboratório de Ictiologia - Brasil
[2] Universidade de São Paulo. Departamento de Biologia. Laboratório de Ictiologia de Ribeirão Preto - Brasil
[3] Universidade de São Paulo. Museu de Zoologia - Brasil
[4] Universidade Estadual de Londrina. Centro de Ciências Biológicas. Departamento de Biologia Animal e Vegetal - Brasil
[5] Universidade Estadual de Maringá. Núcleo de Pesquisas em Limnologia Ictiologia e Aqüicultura - Brasil
[6] Universidade Estadual Paulista. Departamento de Zoologia e Botânica. Laboratório de Ictiologia - Brasil
Total Affiliations: 6
|
| Document type: | Journal article |
| Source: | Biota Neotropica; v. 7, n. 3, p. 181-197, 2007-00-00. |
| Abstract | |
A synthesis concerning fishes from Upper Paraná River basin is presented, based on data from fish-collections, literature, and new field samples. Three hundred and ten species, pertaining to 11 orders and 38 families, are referred to the drainage, elevating anterior estimates. Concerning total species, 236 (76.1%) are autochthonous, 67 (21.6%) are allochthonous, and seven (2.3%) are exotic. Principal causes of occurrence of non-native species are: a) dispersal from the Lower Paraná, after the construction of Itaipu dam, and b) escapes from aquaculture farms. Most species (65%) are small-sized, having less than 21 cm of length, and the great majority occurs only in headwaters and small streams. One of the best known and most studied in Brazil, Upper Paraná ichthyofauna richness is far from reaching actual numbers, considering the exponential elevation of species presented herein. Indeed, in the last years various new species have been described and around 50 other species, already recognized as new, are now under description. The improvement on the knowledge about Upper Paraná ichthyofauna is proportional to the number of researchers involved with studies in the area and, unequivocally, reflects recent initiatives stimulating and incrementing taxonomic research, and also improving access to fish collections and to poor or never-sampled areas. However, if we are going to maintain the number of species descriptions per year of last decade, the 50 new species already recognized, will be described only in the next ten years, a period too long. In consequence it is very important that scientific community and grant agencies find and offer initiatives in order to elevate the number of new taxa descriptions per year. (AU) | |
| FAPESP's process: | 01/13340-7 - Evaluation of the biotic integrity of the rivers of the northwest region of the State of São Paulo, Alto Paraná basin, using communities of fish |
| Grantee: | Lilian Casatti |
| Support Opportunities: | BIOTA-FAPESP Program - Young Investigators Grants |
| FAPESP's process: | 98/05072-8 - Fish diversity of the headwaters and streams of the Upper Paraná River System in the State of São Paulo, Brazil |
| Grantee: | Ricardo Macedo Corrêa e Castro |
| Support Opportunities: | BIOTA-FAPESP Program - Thematic Grants |
| FAPESP's process: | 99/05193-2 - Consolidation of the infrastructure and computerization of the fish collection in the Department of Zoology IBILCE-UNESP, São José do Rio Preto, SP |
| Grantee: | Francisco Langeani Neto |
| Support Opportunities: | BIOTA-FAPESP Program - Regular Research Grants |