2012
DOI: 10.1590/s1516-35982012001200001 View full text |Buy / Rent full text
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Abstract: -The objective of this study was to assess the possibility of increasing the stocking density in the larviculture of Nile tilapia, Oreochromis niloticus, in saline water. Six-day post-hatched larvae (average weight of 0.09±0.002 g), at the start of the exogenous feeding, were stocked in twelve 8 L tanks at densities of 1, 10, 20 and 30 larvae/L. The larvae were fed a diet consisting of 40% crude protein five times per day. During larviculture, water was kept at a salinity of 2 g of common salt/L. At the end of… Show more

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“…Both TAN and turbidity increased during Phase 2 in the 190 m 3 → 103 m 3 tanks as the density increased, as also found by, e.g. Luz, Silva, Melillo, Santos, Rodrigues, Takata, de Alvarenga and Turra (). Despite the significant differences in pH, CO 2 , turbidity and TAN in the 190 m 3 → 103 m 3 tanks, the growth rate in this group was still highest.…”
Section: Discussionsupporting
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“…Both TAN and turbidity increased during Phase 2 in the 190 m 3 → 103 m 3 tanks as the density increased, as also found by, e.g. Luz, Silva, Melillo, Santos, Rodrigues, Takata, de Alvarenga and Turra (). Despite the significant differences in pH, CO 2 , turbidity and TAN in the 190 m 3 → 103 m 3 tanks, the growth rate in this group was still highest.…”
Section: Discussionsupporting
“…The rearing of B. splendens larvae in low-salinity conditions resulted in better or similar growth and survival rates compared to freshwater rearing conditions, as previously observed for other stenohaline species (BORODE et al, 2002;SANTOS and LUZ, 2009;LUZ et al, 2012;JOMORI et al, 2012;. For instance, the growth of Colossoma macropomum, Astronotus ocellatus, Brycon amazonicus and Leporinus macrocephalus larvae was positively affected when they were reared in low-salinity water (JOMORI et al, 2013).…”
Section: Discusionsupporting
“…The use of sodium chloride (NaCl) in water has proved to be an important rearing protocol during the production of larvae (SANTOS and LUZ, 2009;LUZ and SANTOS, 2010;LUZ et al, 2012;JOM ORI et al, 2012;JOMORI et al, 2013) and juveniles (ZUANON et al, 2009;SALARO et al, 2012) of freshwater fish species. In literature, tolerance of Betta splendens to salinity was been reported by ZUANON et al (2009) and PUELLO-CRUZ et al (2010).…”
Section: Introductionmentioning
“…In the second experiment, there was a reduction in the water quality due to the high stocking density. This was reflected in the largest dissolved oxygen consumption and the increase in nitrogen compounds produced by the fish (Abe et al, ; Abe et al, ; Luz et al., ; Santos et al, ). In addition to the reduction in water quality, there was also a reduction in the productivity performance as stocking density increased.…”
Section: Discussionmentioning