期刊
AQUACULTURE
卷 287, 期 3-4, 页码 324-328出版社
ELSEVIER
DOI: 10.1016/j.aquaculture.2008.10.014
关键词
Prey concentrations; Artemia nauplii; Water salinity; Pseudoplatystoma corruscans; Prochilodus costatus; Lophiosilurus alexandri
资金
- CODEVASF/CEMIG, Brazil
- FAPEMIG (Fundacao de Amparo A Pesquisa do Estado de Minas Gerais, Brazil)
The aim of this study was to investigate the effects of different salinities and prey concentrations on Pseudoplatystoma corruscans, Prochilodus costatus and Lophiosilurus alexandri larviculture. For each species, the larvae were reared at a density of 15 larvae/l in 27 2-l aquaria. The experiments were conducted in a 3x3 factorial design, with three prey concentrations, three water salinities and three replicates each. P corruscans larvae showed total mortality in freshwater and better growth and survival in slightly salt water (2%. salinity). The salt addition also resulted in better survival of P costatus. On the other land, water salinity did not affect L. alexandri survival. The survival was similar for the different prey concentrations for the three species studied. The length, weight and specific growth rate in three species were significantly influenced by prey concentrations and/or water salinity. In L. alexandri and P costatus larviculture the un-ionized ammonia levels increased significantly with increasing prey concentrations, but did not show water salinity influence. The prey concentrations had an important role in the P. costatus and L. alexandri growth, but without survival effect for the three species. Slightly salt water call be used in culturing these different stenohaline species promoting better growth and/or survival while compared to freshwater larviculture (C) 2008 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据