Transporte simulado de uma espécie ornamental acará bandeira Pterophyllum scalare (Schultze, 1823) (Perciformes: Cichlidae)

Abstract

The Brazilian and global aquaculture presents remarkable growth in production and new methodologies applicable in the various branches aquaculture. In that case, are important research on the transport of live animals to minimize negative impacts on production. The transport, for long periods, can lead to physiological changes. Thus, the key success factor is the transport contain the highest density of fish in the smallest amount of water possible, without high mortality, deterioration of water quality and stress. The aim of this study was to standardize techniques transport in aquatic organisms (OA) in order to standardize a suitable for this type of management protocol. The experiment was conducted between the months of October-November 2013 at the Tropical Aquaculture Laboratory in Ufra. Specimens of juvenile angelfish Pterophyllum scalare flag during transport simulation were used. The animals were tested for stocking density, transport time and the comparative use of purified oxygen gas (pump) and compressed (cylinder). The physical and chemical water parameters were evaluated, in addition to mortality. Data from the experiments were subjected to statistical transport analyzes Shapiro-Wilk, Kruskal Wallis, ANOVA (one way), ANOVA (two way) and a posteriori Tukey's test at 5% probability. The results of the ANOVA (one way) demonstrated that environmental variable pH showed significant differences in relation to density, but showed no significant difference with respect to time, the reverse occurred for dissolved oxygen and turbidity proved significativaB for both factors. The Kruskal Wallis test revealed significant differences for the parameters temperature, tds, ammonia and mortality. In general, there was an increase of ambienais variables ammonia, turbidity and mortality and the decrease of oxygen with increasing stocking density and time. Already on ANOVA (two way) showed statistical significance for the two forms of oxygen (cylinder and pump), noting lower values for pump, but not causing significant mortality.