Tambaqui growth and survival when exposed to different photoperiods
The use of different photoperiods (light) were investigated during tambaqui (Colossoma macropomum) juvenile growth under captivity. Light intensity tested was: continuous dark (24hrs without light), natural photoperiod simulation (10hrs of light and 14hrs without light) and continuous light (24 with light). No mortality was recorded among treatments. Significant differences was observed after 50 days of experiment among mean fish weight, fish kept under a continuous darkness showed a better specific growth rate (6.02%) when compared to control fish (natural photo period, 3.67%). Fish exposed to continuous light presented the lowest mean specific growth rate (2.04%). It is possible to improve tambaqui juvenile weight gain performance when kept under continuous darkness.
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Instituto Nacional de Pesquisas da Amazônia
2006
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oai:scielo:S0044-596720060003000152007-01-12Tambaqui growth and survival when exposed to different photoperiodsAride,Paulo Henrique RochaRoubach,RodrigoNozawa,Sérgio RicardoVal,Adalberto Luís Colossoma macropomum juvenile fish photoperiod growth The use of different photoperiods (light) were investigated during tambaqui (Colossoma macropomum) juvenile growth under captivity. Light intensity tested was: continuous dark (24hrs without light), natural photoperiod simulation (10hrs of light and 14hrs without light) and continuous light (24 with light). No mortality was recorded among treatments. Significant differences was observed after 50 days of experiment among mean fish weight, fish kept under a continuous darkness showed a better specific growth rate (6.02%) when compared to control fish (natural photo period, 3.67%). Fish exposed to continuous light presented the lowest mean specific growth rate (2.04%). It is possible to improve tambaqui juvenile weight gain performance when kept under continuous darkness.info:eu-repo/semantics/openAccessInstituto Nacional de Pesquisas da AmazôniaActa Amazonica v.36 n.3 20062006-01-01info:eu-repo/semantics/articletext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672006000300015en10.1590/S0044-59672006000300015 |
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Aride,Paulo Henrique Rocha Roubach,Rodrigo Nozawa,Sérgio Ricardo Val,Adalberto Luís |
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Aride,Paulo Henrique Rocha Roubach,Rodrigo Nozawa,Sérgio Ricardo Val,Adalberto Luís Tambaqui growth and survival when exposed to different photoperiods |
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Aride,Paulo Henrique Rocha Roubach,Rodrigo Nozawa,Sérgio Ricardo Val,Adalberto Luís |
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Aride,Paulo Henrique Rocha |
title |
Tambaqui growth and survival when exposed to different photoperiods |
title_short |
Tambaqui growth and survival when exposed to different photoperiods |
title_full |
Tambaqui growth and survival when exposed to different photoperiods |
title_fullStr |
Tambaqui growth and survival when exposed to different photoperiods |
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Tambaqui growth and survival when exposed to different photoperiods |
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tambaqui growth and survival when exposed to different photoperiods |
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The use of different photoperiods (light) were investigated during tambaqui (Colossoma macropomum) juvenile growth under captivity. Light intensity tested was: continuous dark (24hrs without light), natural photoperiod simulation (10hrs of light and 14hrs without light) and continuous light (24 with light). No mortality was recorded among treatments. Significant differences was observed after 50 days of experiment among mean fish weight, fish kept under a continuous darkness showed a better specific growth rate (6.02%) when compared to control fish (natural photo period, 3.67%). Fish exposed to continuous light presented the lowest mean specific growth rate (2.04%). It is possible to improve tambaqui juvenile weight gain performance when kept under continuous darkness. |
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Instituto Nacional de Pesquisas da Amazônia |
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2006 |
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http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672006000300015 |
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