PAPERS AND EXTENDED ABSTRACTS ACCEPTED TO THE II SYMPASS The fish fauna in the fish passage at the Ourinhos Dam, Paranapanema River Marlene Sofia Arcifa and André Luiz Henríques Esguícero Spawning of migratory fish species between two reservoirs of the Upper Uruguay River, Brazil David A. Reynalte-Tataje, Alex P. O. Nuñer, Michele C. Nunes, Valquíria Garcia, Carolina A. Lopes and Evoy Zaniboni-Filho Temporal variability of fish larvae assemblages: influence of natural and anthropogenic disturbances David A. Reynalte-Tataje, Evoy Zaniboni-Filho, Andrea Bialetzki and Angelo A. Agostinho Evaluation of techniques used to protect tailrace fishes during turbine maneuvers at Três Marias Dam, Brazil Francisco de Andrade, Ivo Gavião Prado, Raquel Coelho Loures and Alexandre Lima Godinho Temporal variation in fish community in the tailrace of the Três Marias Hydroelectric Dam, São Francisco River, Brazil Raquel Coelho Loures and Paulo Santos Pompeu Absence of downstream passage through the fish ladder at Peixe Angical Dam, Tocantins River Fernando Mayer Pelicice and Carlos Sérgio Agostinho The use of morphometric analysis to predict the swimming efficiency of two Neotropical long-distance migratory species in fish passage Lucileine de Assumpção, Maristela Cavicchioli Makrakis, Sergio Makrakis, Ricardo Luiz Wagner, Patrícia Sarai da Silva, Ariane Furtado de Lima and Elaine Antoniassi Luiz Kashiwaqui Genetic diversity of the species Leporinus elongatus (Teleostei: Characiformes) in the Canoas Complex - Paranapanema River Juliano Vilas Boas Ramos, Leda Maria Koelblinger Sodré, Mário Luís Orsi and Fernanda Simões de Almeida Passage performance of long-distance upstream migrants at a large dam on the Paraná River and the compounding effects of entry and ascent Ricardo Luiz Wagner, Sergio Makrakis, Theodore Castro-Santos, Maristela Cavicchioli Makrakis, João Henrique Pinheiro Dias and René Fuster Belmont Reynolds shear-stress and velocity: Positive biological response of neotropical fishes to hydraulic parameters in a vertical slot fishway Bernardo Alan de Freitas Duarte, Isabella Cristina Resende Ramos and Hersília de Andrade e Santos Optimal swim speeds by respirometer: an analysis of three neotropical species Hersília de Andrade e Santos, Edna Maria de Faria Viana, Paulo Santos Pompeu and Carlos Barreira Martinez Culverts in paved roads as suitable passages for Neotropical fish species Sergio Makrakis, Theodore Castro-Santos, Maristela Cavicchioli Makrakis, Ricardo Luiz Wagner and Maurício Spagnolo Adames Longitudinal habitat disruption in Neotropical streams: fish assemblages under the influence of culverts José Roberto Mariano, Maristela Cavicchioli Makrakis, Elaine Antoniassi Luiz Kashiwaqui, Elaine Fernandes Celestino and Sergio Makrakis Fish passage system in an irrigation dam (Pilcomayo River basin): When engineering designs do not match ecohydraulic criteria C. R. M. Baigún, J. M. Nestler, Priscilla Minotti and Norberto Oldani A barrier to upstream migration in the fish passage of Itaipu Dam (canal da piracema), Paraná River basin Hélio Martins Fontes Júnior, Theodore Castro-Santos, Sergio Makrakis, Luiz Carlos Gomes and João Dirço Latini Fish passage post-construction issues: analysis of distribution, attraction and passage efficiency metrics at the Baguari Dam fish ladder to approach the problem Luiz Gustavo Martins da Silva, Lorena Bettinelli Nogueira, Bruno Pereira Maia and Lucas Borges de Resende Fish ladders: safe fish passage or hotspot for predation? Angelo Antonio Agostinho, Carlos Sergio Agostinho, Fernando Mayer Pelicice and Elineide Eugênio Marques Reproductive parameters and body conditions of three species of Astyanax (Ostheichthyes, Characidae) in streams intercepted by culverts Elaine Fernandes Celestino, Elaine Antoniassi Luiz Kashiwaqui, José Roberto Mariano, Leandro Fernandes Celestino, Sergio Makrakis and Maristela Cavicchioli Makrakis Downstream passages of fish eggs and larvae through the Porto Primavera fish ladder, Upper Paraná River, Brazil Patrícia Sarai da Silva, Maristela Cavicchioli Makrakis, Fernanda Freitas Andrade, Lucileine de Assumpção, Adriano Vitor Azevedo, Sergio Makrakis; João Henrique Pinheiro Dias Downstream migration of Neotropical potamodromous species through hydroelectric reservoir: myth or reality? Sergio Makrakis, Hélio Martins Fontes Júnior, Maristela Cavicchioli Makrakis, Domingo Rodriguez Fernandez, João Henrique Pinheiro Dias and René Fuster Belmont Preferential spawning areas of Neotropical migratory fish species in tributaries of Porto Primavera Reservoir, Upper Paraná River Patrícia Sarai da Silva, Maristela Cavicchioli Makrakis, Lucileine de Assumpção, Salete de Paula, Sergio Makrakis, João Henrique Pinheiro Dias and Hugo Marques Temporal variations in the ichthyofauna of the Piracema Canal: is there a clear pattern in the movement of migratory fish? Hélio Martins Fontes Junior, Sergio Makrakis, Maristela Cavichioli Makrakis, João Dirço Latini, Wladimir Marques Domingues, André Watanabe and Luiz Carlos Gomes Preliminary results on population genetics of dourado (Salminus brasiliensis) along the Upper Paraná river basin Adriana Kazue Takako, Dorivaldo Marques da Silva Jr., Tamylin Kaori Ishizuka, Alline Braga Silva, Aline Gallindo Nunes, Josiane Ribolli, Patrícia Domingues de Freitas, Pedro Manoel Galetti Jr Genetic evidence of population structuring in the Salminus hilarii in fragmented parts from Upper Paraná River basin Aline Galindo Nunes, Alline Braga Silva, Josiane Ribolli, Adriana Kazue Takako, Pedro Manoel Galetti Junior, Patrícia Domingues de Freitas Populations of Prochilodus costatus (Characiformes, Prochilodontidae) downstream and upstream of Três Marias dam present genetic differentiation Alline Braga Silva, Luís Fernando Carvalho Costa, Aline Galindo Nunes, Josiane Ribolli, Adriana Kazue Takako, Patrícia Domingues de Freitas, Pedro Manoel Galetti Junior Biology Reproductive of Migratory Fish of the Sorocaba River, SP, Brazil Andréia Camargo Portella, Anderson Dalmolin Arsentales, Welber Senteio Smith A first evaluation of the fish passage mechanism after the filling up of Palmeiras Small Hydro Plants (Sapucaí-Mirim River, Grande River basin – Brazil) Diogo Freitas Souza, Sandro Geraldo de Castro Britto, Marcos Gomes Nogueira, André Batista Nobile, Mateus F. Ferrareze, Edmir Daniel Carvalho Fish passage at Funil Hydroeletric Power Plant fish lift Gilmara Junqueira Machado Pereira, Paulo dos Santos Pompeu The fish community of the Grande River and its tributaries in the area of influence of Funil Hydroelectric Power Plant Gilmara Junqueira Machado Pereira, Paulo dos Santos Pompeu Distribution and abundance of top fish predators in a river stretch with a cascade of dams, Upper Uruguay River, Brazil Jaqueline Cristina de Bem, Samara Silva Hermes, Evoy Zaniboni Filho Genetic diversity and sibship reconstruction of dourado larvae (Salminus brasiliensis) sampled in a stretched fragmented by dams Josiane Ribolli, Tailise Carolina de Souza Guerreiro, Evoy Zaniboni Filho, Alline Braga Silva, Aline Galindo Nunes, Adriana Kazue Takako, Patricia Domingues de Freitas, Pedro Manoel Galetti Júnior Impact of the Betania dam on genetic structure of bocachico Prochilodus magdalenae (Pisces: Prochilodontidae) from the Magdalena River-Colombia Gilberto Jr Orozco, Juan Carlos Narváez B., Juan Carlos Aguirre, Eider Muñoz, Ana Carolina Torregroza, Daniel Castañeda, Yuris Julio, Fania Bolivar Influence of Sluice Dam in the movement of marine catfish (Siluriforms, Ariid) in São Gonçalo channel, Patos-Mirim System Marcelo Dias de Mattos Burns, João Paes Vieira LDM – Leitor Digital para Molinetes Hidrométricos Marcos Freitas de Moraes, Liliana Madalena Gramani Influence of hydraulics on the upstream passage performance of Amazonian fishes in an experimental fishway Raoni R. Rodrigues, Alexandre L. Godinho, Ricardo A. C. Junho, Donald Pugh, Boyd Kynard Three types of energy dissipaters and fish passage in an experimental fishway built in the Madeira River Ricardo A. C. Junho, Alexandre L. Godinho, Boyd Kynard, Raoni R. Rodrigues, Donald Pugh Fish Passage System (FPS) in the Hydroeletric Power Plant in the Basin of Paraiba do Sul River: Case study of the environmental licensing of HPP Itaocara Raphaela Ferreira, Roberto Huet de Salvo Souza, Frederico Almeida, Paulo Mario Correia de Araújo, Redelvin Dumont Near-Nature Water Courses at large hydropower plants in Central Europe as fishways and running water habitats Rolf-Jürgen Gebler Ichthyoplankton and fishery data as basic information for hydropower planning on Juruena River basin Elisângela M. Almeida, Verônica S. M. Gomes, Mônica G. Mai, André L. Alberti, Gladstone I. de Almeida, Rafael A. Baggio, Edinbergh Oliveira, Edvaldo Peisino National-scale research efforts in support of hydropower-fish interactions: Canadian fish passage research relevant to South America Eduardo G. Martins, Jason D. Thiem, Charles Hatry, Steven J. Cooke, Michael Power, Karen E. Smokorowski, Daniel Boisclair Prior assessment of the Neotropical ichthyofauna to decision on construction of fishway Sergio Makrakis, Maristela Cavicchioli Makrakis, Elaine Antoniassi Luiz Kashiwaqui, Lucileine de Assumpção, Patrícia Sarai da Silva, Tiago Vitor Chlusewicz, Augusto Tavares