Tambaqui growth and survival when exposed to different photoperiods

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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Main Authors: Aride,Paulo Henrique Rocha, Roubach,Rodrigo, Nozawa,Sérgio Ricardo, Val,Adalberto Luís
Format: Digital revista
Language:English
Published: Instituto Nacional de Pesquisas da Amazônia 2006
Online Access:http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672006000300015
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spelling 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
institution SCIELO
collection OJS
country Brasil
countrycode BR
component Revista
access En linea
databasecode rev-scielo-br
tag revista
region America del Sur
libraryname SciELO
language English
format Digital
author Aride,Paulo Henrique Rocha
Roubach,Rodrigo
Nozawa,Sérgio Ricardo
Val,Adalberto Luís
spellingShingle Aride,Paulo Henrique Rocha
Roubach,Rodrigo
Nozawa,Sérgio Ricardo
Val,Adalberto Luís
Tambaqui growth and survival when exposed to different photoperiods
author_facet Aride,Paulo Henrique Rocha
Roubach,Rodrigo
Nozawa,Sérgio Ricardo
Val,Adalberto Luís
author_sort 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
title_full_unstemmed Tambaqui growth and survival when exposed to different photoperiods
title_sort tambaqui growth and survival when exposed to different photoperiods
description 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.
publisher Instituto Nacional de Pesquisas da Amazônia
publishDate 2006
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672006000300015
work_keys_str_mv AT aridepaulohenriquerocha tambaquigrowthandsurvivalwhenexposedtodifferentphotoperiods
AT roubachrodrigo tambaquigrowthandsurvivalwhenexposedtodifferentphotoperiods
AT nozawasergioricardo tambaquigrowthandsurvivalwhenexposedtodifferentphotoperiods
AT valadalbertoluis tambaquigrowthandsurvivalwhenexposedtodifferentphotoperiods
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