Crescimento e reprodução da matrinxã Brycon amazonicus em tanques no município de Paulo Afonso, Bahia

AUTOR(ES)

Fabrício de Lima Freitas

DATA DE PUBLICAÇÃO

2010

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 50m tanks of, with two treatments and three replicates: D1 - 1 specimen/m and D2 - 2 specimens/m. 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 75m. 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.

ASSUNTO(S)

matrinxã reprodutores brood stocks brycon amazonicus aquicultura brick tanks tanques de alvenaria recursos pesqueiros e engenharia de pesca

Documentos Relacionados

• Efeito do manejo alimentar no desempenho do matrinxã Brycon amazonicus em tanques de cultivo
• A Pnater: reflexões sobre os seus princípios e objetivos a partir da percepção de extensionistas rurais do município de Paulo Afonso, Bahia
• Probiótico na larvicultura de matrinxã, Brycon amazonicus
• Otimização da velocidade de nado sustentado em matrinxã Brycon amazonicus: rendimento e aspectos adaptativos
• Dinâmica populacional da matrinxã Brycon amazonicus (Characidae) na Amazônia Central