Detalhes bibliográficos
| Ano de defesa: |
2010 |
| Autor(a) principal: |
FREITAS, Fabrício de Lima
 |
| Orientador(a): |
CORREIA, Eudes de Souza |
| Banca de defesa: |
SOARES, Maria do Carmo Figueredo,
SILVA, Adriana Maria Cunha da,
BARBOSA, José Milton |
| Tipo de documento: |
Dissertação
|
| Tipo de acesso: |
Acesso aberto |
| Idioma: |
por |
| Instituição de defesa: |
Universidade Federal Rural de Pernambuco
|
| Programa de Pós-Graduação: |
Programa de Pós-Graduação em Recursos Pesqueiros e Aquicultura
|
| Departamento: |
Departamento de Pesca e Aquicultura
|
| País: |
Brasil
|
| Palavras-chave em Português: |
|
| Palavras-chave em Inglês: |
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| Área do conhecimento CNPq: |
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| Link de acesso: |
http://www.tede2.ufrpe.br:8080/tede2/handle/tede2/6307
|
Resumo: |
Considering the potentiality of Brycon amazonicus culture and scarcity of information on the management of the species in the semiarid region of the Brazilian northeastern, this study aimed to investigate the growth and reproductive performance in tanks, which was developed in two phases. In the Phase 1, the matrinxãs growth performance in six 50m² tanks of, with two treatments and three replicates: D1 - 1 specimen/m² and D2 - 2 specimens/m². Sampling was done monthly, using 10% of individuals of each replicates, to follow the growth and weight gain of fish and feed settings. At the end of phase 1, samples of gonads were collected and sent for histological analysis. In Phase 2, 16 matrinxãs from treatments A and B were placed in a tank with 75m². Part of the gonads was subjected to gross and microscopic examination in order to determine the gonadal development. Stocking density influenced the growth of B. amazonicus. Weight gain varied with the season, as a result of changes in water temperature. Males reach first maturity in the first year of life, whereas females reached only in the second year. |
