Vitelogênese pós-desova em lambaris, Astyanax altiparanae, mantidos em laboratório

• Ano de defesa: 2015
• Autor(a) principal: Guerra Lira, Lieschen Valeria [UNESP]
• Tipo de documento: Dissertação
• Tipo de acesso: Acesso aberto
• Idioma: por
• Instituição de defesa: Universidade Estadual Paulista (Unesp)
• Palavras-chave em Português: Peixe; Peixe - Reprodução; Lambari (Peixe); Peixe - Desova artificial; Oócitos; Fishes
• Link de acesso: http://hdl.handle.net/11449/143022; http://www.athena.biblioteca.unesp.br/exlibris/bd/cathedra/14-07-2016/000866550.pdf

The possibility of successive spawning in laboratory conditions permits a qualitative and quantitative increase in aquaculture. Recent studies indicate that the yellowtail tetra (Astyanax altiparanae) presents high reproductive plasticity which the reproductive cycle may be manipulated out of breeding season. In addition, the manipulation of enviromental condition, may induce the spawning during winter period. Therefore, given the breeding potential of this species and the increasing demand from fish farmers, the aim of this experiment was to investigate if the same female can prepare for a second induced spawning at laboratory conditions, what are the characteristics of the process and the time required to perform this second spawning. The results obtained were promising, as we observed that the same female maintained in a recirculating water system at a controlled temperature (29.24 ± 0.42°C) presentes vitellogenic oocytes 6 days after spawning. Obtaining complete reproductive cycles in the laboratory at short inter spawning period optimize the use of space and water, making the production of this species appropriate for a modern, sustainable and competitive aquaculture