Boletim do Instituto de Pesca | |
DIFFERENT DENSITIES OF COMMON SNOOK REARED IN MARINE CAGES IN SOUTHERN BRAZIL | |
Bruno Corrêa da SILVA1 Fabiano Müller SILVA1 Vinicius Ronzani CERQUEIRA2 | |
[1] Centro de Desenvolvimento em Aquicultura e Pesca, Empresa de Pesquisa Agropecuária e Extensão Rural de Santa Catarina, Secretaria de Estado da Agricultura, da Pesca e do Desenvolvimento Rural, Governo do estado de Santa Catarina.;Universidade Federal de Santa Catarina, Centro de Ciências Agrárias, Departamento de Aquicultura, Laboratório de Piscicultura Marinha.; | |
关键词: productivity; marine fish farming; performance indicators; performance indicators.; | |
DOI : 10.20950/1678-2305/bip.2021.47.e643 | |
来源: DOAJ |
【 摘 要 】
Twogrowthstagesofjuvenilesnook(Centropomusundecimalis)underthreedifferentdensitieswereevaluated:10,20,and40fishm-3,in2.5-m3cageswith12-mmmesh.InphaseI,snooksof72.0 g and 21.2 cm were raised for 270 days. In phase II, snooks of 204.6 g and 29.2 cm were raised for202days.Theaveragewatertemperatureandsalinitywere24.3°Cand34.5,respectively,atSantaCatarinaIsland,Brazil.Thedatawereevaluatedusingregressionmodels.Densityincreasedidnotinfluencesurvivalrate,with51.0%(phaseI)and88.7%(phaseII).Thedensityof20 fish m-3 provided the best results, such as body weight, in the two phases, with 215.7 and 364.7 g, respectively. Water temperature was the main limiting factor for the growth of snook. Therefore, in a subtropical climate, it is recommended to start growing in the spring (> 24°C) and avoid handling fishwhenthetemperatureisbelow20°C.Regressionanalysisonthefinalweightshowedthatdensities of 24 fish m-3 could be indicated for common snook under the conditions of this study.
【 授权许可】
Unknown