Submitted by (edna.saturno@ufrpe.br) on 2017-02-16T13:06:03Z No. of bitstreams: 1 Marcos Antonio Cerqueira.pdf: 307415 bytes, checksum: a0c882402c940a3ff2dd4c74fe826638 (MD5) / Made available in DSpace on 2017-02-16T13:06:03Z (GMT). No. of bitstreams: 1 Marcos Antonio Cerqueira.pdf: 307415 bytes, checksum: a0c882402c940a3ff2dd4c74fe826638 (MD5) Previous issue date: 2003-02-17 / The Tambaqui fish Colossoma macropomum (Cuvier, 1816) , is a typical species from the amazon state, which the cultive to find oneself in ascendance, mainly with the increase of the post-larval production. This work has as objetive to determine the effect of the colors in the post-larval survival to the tambaqui fish during the incubation phases. The experiment was realized with the support a hatchery with the 60L of capacity, in the pisciculture station of Balbina, Amazon State, Brazil. The experiment was formed with four conditions and five replies to each. In the three conditions the hatcheries were envolved with cellophane sheets with differents colors and the last conditions the hatchery wasn’t envolved. Each condition was represented by a color : A- blue; M- brown; P- black and T- translucent (environmental light). To the experiments was obtained any effect of the colors on the fertilization (F(3;16) = 0,53, p > 0,05). However, the larval eclosion was influenceated by the colors: the “T” and “A” conditions presented the better performance (F(3;16) = 4,65, p < 0,05). The rate of the post-larval prodution was influenced by the colors too: the “T” and “M” conditons presente better income (F(3;16) = 4,76, p < 0,05). Thus is possible to suggest that in some phases of the fish reprodution was influenceated by the colors. / O tambaqui Colossoma macropomum (Cuvier, 1816) é uma espécie nativa de região Amazônica, cuja criação encontra-se em ascendência principalmente com o aumento da produção de pós-larvas, o que justifica o desenvolvimento de pesquisa visando otimizar a produção deste insumo. Assim, o objetivo deste trabalho foi determinar o efeito da cor na sobrevivência de pós-larvas de tambaqui durante a incubação. O experimento foi realizado em incubadoras de 60L na estação de piscicultura de Balbina e constou de quatro condições, com cinco réplicas cada. Em três delas, as incubadoras foram envoltas com papel celofane de diferentes cores e na quarta condição (controle) as incubadoras não foram cobertas por papel. Cada uma delas representou uma condição: A - azul; M - marrom, P - preta e T - translúcida (cor natural). Não ocorreu efeito da cor sobre fertilização dos ovos (F(3;16) = 0,53, p > 0,05) cujas taxas variaram de 46,95%, na condição P a 56,95%, na condição T. No entanto, houve influência da cor na eclosão de larvas: as condições T, com taxa de 43,76% e A, com taxa de 30%, apresentaram melhor sobrevivência que as demais (F(3;16) = 4,65, p < 0,05). A taxa de produção de pós-larvas também foi influenciada pelas cores: as condições T, com taxa de 18,26% e M com taxa de 10,36%, apresentaram melhor sobrevivência (F(3;16) = 4,76, p < 0,05) do que as demais. Assim, é possível sugerir que as cores podem influenciar algumas fases da reprodução de peixes.

I conducted a 12-month study of near-shore habitats in Lake Pontchartrain to assess spatiotemporal variation in the abundance of early life stage blue crabs (Callinectes sapidus). Collections were made using a 1 m2 throw trap and data showed that C. sapidus numbers varied over time and among sites. Two recruitment events occurred during the study. During the first recruitment in May-June, C. sapidus entered Lake Pontchartrain via the Inner Harbor Navigational Canal. In September-October, C. sapidus entered the Lake Pontchartrain via the Rigolets and Chef passes. My data suggest that C. sapidus utilize water circulation within the Lake Pontchartrain as a means of transportation throughout the estuary. MODerate-resolution Imaging Spectroradiometer (MODIS) 250 m data were analyzed to gain a large-scale view of suspended sediments patterns within Lake Pontchartrain and quantify water movement. Field sampling along with remote sensing proved to be beneficial when assessing estuarine-wide C. sapidus post-larval dispersal processes.