Dynamics of some limnological characteristics in pacu (Piaractus mesopotamicus) culture tanks as function of handling
Autor(a) principal: | |
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Data de Publicação: | 1999 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Revista Brasileira de Biologia (Online) |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0034-71081999000400003 |
Resumo: | In order to study the water quality in fish tanks, a 166-day (January to July 1992) experiment was realized using the indigenous species "pacu" (Piaractus mesopotamicus). Two different protein levels were tested in the diet (16% and 34% crude protein) and three stocking densities (0.25, 0.50 and 0.77 fish/m²). From the results, it was observed that the interactions between stocking density and experiment length affected the characteristics bicarbonate and alkalinity, as well as the interaction between stocking density and protein levels affected concentrations of free and total CO2, conductivity and pH (P < 0.05). The water temperature in tanks changed significantly during the period of study (P < 0.05),decreasing gradually from summer to winter. There was no significant difference in water residence time in the tanks (P < 0.05) during the experiment. The other limnological characteristics were not affected by treatments during study period. |
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Dynamics of some limnological characteristics in pacu (Piaractus mesopotamicus) culture tanks as function of handlingstock densityprotein levelsfish tankspaculimnological characteristicsIn order to study the water quality in fish tanks, a 166-day (January to July 1992) experiment was realized using the indigenous species "pacu" (Piaractus mesopotamicus). Two different protein levels were tested in the diet (16% and 34% crude protein) and three stocking densities (0.25, 0.50 and 0.77 fish/m²). From the results, it was observed that the interactions between stocking density and experiment length affected the characteristics bicarbonate and alkalinity, as well as the interaction between stocking density and protein levels affected concentrations of free and total CO2, conductivity and pH (P < 0.05). The water temperature in tanks changed significantly during the period of study (P < 0.05),decreasing gradually from summer to winter. There was no significant difference in water residence time in the tanks (P < 0.05) during the experiment. The other limnological characteristics were not affected by treatments during study period.Instituto Internacional de Ecologia1999-11-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0034-71081999000400003Revista Brasileira de Biologia v.59 n.4 1999reponame:Revista Brasileira de Biologia (Online)instname:Instituto Internacional de Ecologia (IIE)instacron:IIE10.1590/S0034-71081999000400003info:eu-repo/semantics/openAccessSIPAÚBA-TAVARES,L. H.MORAES,M. A. G. deBRAGA,F. M . de S.eng2001-04-05T00:00:00Zoai:scielo:S0034-71081999000400003Revistawww.scielo.br/rbbioONGhttps://old.scielo.br/oai/scielo-oai.php||bjb.iie@terra.com.br1806-96060034-7108opendoar:2001-04-05T00:00Revista Brasileira de Biologia (Online) - Instituto Internacional de Ecologia (IIE)false |
dc.title.none.fl_str_mv |
Dynamics of some limnological characteristics in pacu (Piaractus mesopotamicus) culture tanks as function of handling |
title |
Dynamics of some limnological characteristics in pacu (Piaractus mesopotamicus) culture tanks as function of handling |
spellingShingle |
Dynamics of some limnological characteristics in pacu (Piaractus mesopotamicus) culture tanks as function of handling SIPAÚBA-TAVARES,L. H. stock density protein levels fish tanks pacu limnological characteristics |
title_short |
Dynamics of some limnological characteristics in pacu (Piaractus mesopotamicus) culture tanks as function of handling |
title_full |
Dynamics of some limnological characteristics in pacu (Piaractus mesopotamicus) culture tanks as function of handling |
title_fullStr |
Dynamics of some limnological characteristics in pacu (Piaractus mesopotamicus) culture tanks as function of handling |
title_full_unstemmed |
Dynamics of some limnological characteristics in pacu (Piaractus mesopotamicus) culture tanks as function of handling |
title_sort |
Dynamics of some limnological characteristics in pacu (Piaractus mesopotamicus) culture tanks as function of handling |
author |
SIPAÚBA-TAVARES,L. H. |
author_facet |
SIPAÚBA-TAVARES,L. H. MORAES,M. A. G. de BRAGA,F. M . de S. |
author_role |
author |
author2 |
MORAES,M. A. G. de BRAGA,F. M . de S. |
author2_role |
author author |
dc.contributor.author.fl_str_mv |
SIPAÚBA-TAVARES,L. H. MORAES,M. A. G. de BRAGA,F. M . de S. |
dc.subject.por.fl_str_mv |
stock density protein levels fish tanks pacu limnological characteristics |
topic |
stock density protein levels fish tanks pacu limnological characteristics |
description |
In order to study the water quality in fish tanks, a 166-day (January to July 1992) experiment was realized using the indigenous species "pacu" (Piaractus mesopotamicus). Two different protein levels were tested in the diet (16% and 34% crude protein) and three stocking densities (0.25, 0.50 and 0.77 fish/m²). From the results, it was observed that the interactions between stocking density and experiment length affected the characteristics bicarbonate and alkalinity, as well as the interaction between stocking density and protein levels affected concentrations of free and total CO2, conductivity and pH (P < 0.05). The water temperature in tanks changed significantly during the period of study (P < 0.05),decreasing gradually from summer to winter. There was no significant difference in water residence time in the tanks (P < 0.05) during the experiment. The other limnological characteristics were not affected by treatments during study period. |
publishDate |
1999 |
dc.date.none.fl_str_mv |
1999-11-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0034-71081999000400003 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0034-71081999000400003 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/S0034-71081999000400003 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
text/html |
dc.publisher.none.fl_str_mv |
Instituto Internacional de Ecologia |
publisher.none.fl_str_mv |
Instituto Internacional de Ecologia |
dc.source.none.fl_str_mv |
Revista Brasileira de Biologia v.59 n.4 1999 reponame:Revista Brasileira de Biologia (Online) instname:Instituto Internacional de Ecologia (IIE) instacron:IIE |
instname_str |
Instituto Internacional de Ecologia (IIE) |
instacron_str |
IIE |
institution |
IIE |
reponame_str |
Revista Brasileira de Biologia (Online) |
collection |
Revista Brasileira de Biologia (Online) |
repository.name.fl_str_mv |
Revista Brasileira de Biologia (Online) - Instituto Internacional de Ecologia (IIE) |
repository.mail.fl_str_mv |
||bjb.iie@terra.com.br |
_version_ |
1754821093315575808 |