Hugmar Pains da Silva, Cláudio Henrique Zawadzki, Luzia da Silva Lourenço, Izaias Médice Fernandes


The Aripuanã River basin is part of one of the most biodiverse hydrographic basins on the planet; however, the lack of information on fish diversity in the basin is notable, particularly upstream to the Dardanelos and Andorinhas waterfalls complex. For this study, we sampled 50 m stretches of 71 streams in the Aripuanã River basin, upstream and downstream of the Dardanelos and Andorinhas waterfalls complex. Sampling occurred in the drought period in 2013 and 2014. A total of 11,334 specimens were capture, belonging to five orders, 21 families and 80 species. Among the 80 species, 71 were caught in the downstream and 45 in the upstream region. Overall, there were 36 species in both upstream and downstream samples, 35 exclusive to the downstream segment, and nine were restricted to the upstream region. Despite the low levels of current knowledge, at least 15 endemic fish species could be present in the Aripuanã River basin, and four from these 15 species were sampled in this study. Dardanelos and Andorinhas waterfalls complex are important barriers and we found significant differences in fish assemblage between upstream and downstream regions.


AAmazon basin; Aripuanã River basin; ichthyofauna; stream; waterfall barrier

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Alvares, C. A., Stape, J. L., Sentelhas, P. C., Moraes Gonçalves, J. L., & Sparovek, G. 2013. Köppen's climate classification map for Brazil. Meteorologische Zeitschrift, 22(6), 711–728. DOI: 10.1127/0941-2948/2013/0507

Dagosta, F. C. P., & Pinna, M. 2017. Biogeography of Amazonian fishes: deconstructing river basins as biogeographic units. Neotropical Ichthyology, 15(3), 1–24. DOI: 10.1590/1982-0224-20170034

Deprá, G. C., Kullander, S. O., Pavanelli, C. S., & Graça, W. J. D. 2014. A new colorful species of Geophagus (Teleostei: Cichlidae), endemic to the rio Aripuanã in the Amazon basin of Brazil. Neotropical Ichthyology, 12(4), 737–746. DOI: 10.1590/1982-0224-20140038

Dias, M. S., Magnusson W. E., & Zuanon, J. 2010. Effects of reduced impact logging on fish assemblages in Central Amazonia. Conservation Biology, 24(1), 278–286. DOI: 10.1111/j.1523-1739.2009.01299

Espírito-Santo, H. M. V., Magnusson, W. E., Zuanon, J., Mendonça, F. P., & Landeiro, V. L. 2009. Seasonal variation in the composition of fish assemblages in small Amazonian forest streams: evidence for predictable changes. Freshwater Biology, 54(3), 536–548. DOI: 10.1111/j.1365-2427.2008.02129

Fernandes, I. M., Lourenço, L. S., Ota, R. P., Moreira, M. M. M., & Zawadzki, C. H. 2013. Effects of local and regional factors on the fish assemblage structure in Meridional Amazonian streams. Environmental Biology of Fishes, 96(7), 837–848. DOI: 10.1007/s10641-012-0079-1

Fernandes, I. M., Bastos, Y. F., Barreto, D. S., Lourenço, L. S., & Penha, J. M. 2017. The efficacy of clove oil as an anaesthetic and in euthanasia procedure for small-sized tropical fishes. Brazilian Journal of Biology, 77(3), 444–450. DOI: 10.1590/1519-6984.15015

Flausino-Junior, N., Machado, F. A., Zuanon, J. S., & Ferreira, E. J. 2016. The fish fauna of sessile hydrophytes stands (Mourera spp.: Podostemaceae) in the Dardanelos Waterfalls, Rio Aripuanã, Brazil. Aqua, International Journal of Ichthyology, 22(3), 133–144.

Fricke, R., Eschmeyer, W., & Fong, J. D. 2017. Species by family/subfamily in Eschmeyer's Catalog of Fishes. California Academy of Sciences, San Francisco. Retrieved on October 10, 2017, from www. SpeciesByFamily.asp

Goulding, M., Barthem, R., & Ferreira, E. 2003. The Smithsonian atlas of the Amazon. 1st ed. Washington, DC: Smithsonian Books: p. 256.

ICMBIO - Instituto Chico Mendes de Conservação da Biodiversidade. 2014. Lista das espécies da fauna brasileira ameaçadas de extinção. Portaria MMA nº 445, de 17 de dezembro de 2014.

Jönck, C. R., & Aranha, J. M. R. 2010. Influence of a waterfall over richness and similarity in adjoining pools of an Atlantic Rainforest stream. Acta Limnologica Brasiliensia, 22(4), 378–383. DOI: 10.4322/actalb.2011.003

Kano, Y., Nishida, S., & Nakajima, J. 2012. Waterfalls drive parallel evolution in a freshwater goby. Ecology and Evolution, 2(8), 1805–1817. DOI: 10.1002/ece3.295

Lees, A. C., Peres, C. A., Fearnside, P. M., Schneider, M., & Zuanon, J. A. S. 2016. Hydropower and the future of Amazonian biodiversity. Biodiversity and Conservation, 25(3), 451–466. DOI: 10.1007/s10531-016-1072-3

Lowe-McConnell, R. H. 1999. Estudos ecológicos de comunidades de peixes tropicais. São Paulo: Editora da Universidade de São Paulo: p. 535.

Mendonça, F. P., Magnusson W. E., & Zuanon, J. 2005. Relationship between habitat characteristics and fish assemblages in small streams of Central Amazonia. Copeia, 2005(4), 750–763. DOI: 10.1643/0045-8511(2005)005[0751:RBHCAF]2.0.CO;2

Nelson, J. S., Grande, T. C., & Wilson, M. V. H. 2016. Fishes of the World. 5th ed. Hoboken, NJ: John Wiley & Sons: p. 752.

Pastana, M. N. L., & Ohara, W. M. 2016. A new species of Hyphessobrycon Durbin (Characiformes: Characidae) from rio Aripuanã, rio Madeira basin, Brazil. Zootaxa, 4161(3), 386–398. DOI: 10.11646/zootaxa.4161.3.6

Pedroza, W. S., Ribeiro, F. R. V., Teixeira, T. F., Ohara, W. M., & Rapp Py-Daniel, L. H.. 2012. Ichthyofaunal survey of stretches of the Guariba and Rooselvelt rivers, in Guariba State Park and Guariba Extractive Reserve, Madeira River basin, Amazonas, Brazil. Check List, 8(1), 008–015. DOI: 10.15560/8.1.008

Porsani, J. L., Kipnis, R., dos Santos, V. R. N., Almeida, E. R., & Fernandes, I. 2017. GPR tomography as support for an archaeological excavation in Aripuanã indigenous cemetery, Amazon region, Brazil. International Journal of Geosciences, 8(10), 1264–1277. DOI: 10.4236/ijg.2017.810073

Queiroz, L. J., Torrente-Vilara, G., Ohara, W. M., Pires, T. H. S., Zuanon, J., & Doria, C. R. C. 2013. Peixes do Rio Madeira. São Paulo.

Rapp Py-Daniel, L., Deus, C. P., Ribeiro, O. M., & Sousa, L. M. 2007. Peixes. In: A. L. Henriques, D. M. Pimpão, & O. M. Ribeiro (Eds.), Biodiversidade do Médio Madeira: bases científicas para propostas de conservação. pp. 89–117. Manaus: INPA.

Rahel, F. J. 2007. Biogeographic barriers, connectivity and homogenization of freshwater faunas: it's a small world after all. Freshwater Biology, 52(4), 696–710. DOI: 10.1111/j.1365-2427.2006.01708.x

Reis, R. E., Kullander, S. O., & Ferraris Jr, C. J. 2003. Check list of the freshwater fishes of South and Central America. Porto Alegre: EdiPUCRS: p. 729.

Reis, R. E., Albert, J. S., Di Dario, F., Mincarone, M. M., Petry, P., & Rocha, L. A. 2016. Fish biodiversity and conservation in South America. Journal of Fish Biology, 89(1), 12–47. DOI: 10.1111/jfb.13016

Sioli, H. 1984. The amazon and its main affluents: hydrography, morphology of the river courses, and river types. In: H. Sioli (Ed.), The Amazon: limnology and landscape ecology of a mighty tropical river and its basin. pp. 127–165. Dordrecht: Springer.

Soares, M. G. M. 1979. Aspectos ecológicos (alimentação e reprodução) dos peixes do igarapé do Porto, Aripuanã, MT. Acta Amazonica, 9(2), 325–352. DOI: 10.1590/1809-43921979092325

Sokal, R. R., & Rohlf, F. J. 1981. Biometry. 2nd ed. Nova York, NY: W. H. Freeman & Company: p. 859.

Strahler, A. N. 1957. Quantitative analysis of watershed geomorphology. Eos, Transactions American Geophysical Union, 38(6), 913–920. DOI: 10.1029/TR038i006p00913

Torrente‐Vilara, G., Zuanon, J., Leprieur, F., Oberdorff, T., & Tedesco, P. A. 2011. Effects of natural rapids and waterfalls on fish assemblage structure in the Madeira River (Amazon Basin). Ecology of Freshwater Fish, 20(4), 588–597. DOI: 10.1111/j.1600-0633.2011.00508.x

Zanata, A. M., & Ohara, W. M. 2009. Jupiaba citrina, a new species from rio Aripuanã, rio Madeira basin, Amazonas and Mato Grosso states, Brazil (Characiformes: Characidae). Neotropical Ichthyology, 7(4), 513–516. DOI: 10.1590/S1679-62252009000400001

Zawadzki, C. H., & Carvalho, P. H. 2014. A new species of the Hypostomus cochliodon group (Siluriformes: Loricariidae) from the rio Aripuanã basin in Brazil. Neotropical Ichthyology, 12(1), 43–51. DOI: 10.1590/S1679-62252014000100004



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