Growth of silver catfish ( Rhamdia quelen ) exposed to acidic pH at different humic acid levels

Detalhes bibliográficos
Autor(a) principal: Costa,Silvio Teixeira da
Data de Publicação: 2016
Outros Autores: Sutili,Fernando Jonas, Gressler,Luciane Tourem, Loebens,Luíza, Colpo,Carine Vargas, Lazzari,Rafael, Baldisserotto,Bernardo
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Ciência Rural
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782016000601094
Resumo: ABSTRACT: Humic substances are organic compounds that possess high molecular weight and are formed by the decomposition of plant materials. Humic substances comprise humic acids, fulvic acids and humin. Humic acids (HA) have shown to be able to provide some protection to biological membranes of fish in water with low pH, replacing the protective action of Ca2+. Thus, this studyaimed to observe growth of silver catfish ( Rhamdia quelen ) juveniles exposed to pHs 5.5 and 6.5 and to different levels of HA: 0, 10, 25 and 50mg L-1. Results showed that, irrespective of pH, HA was highly detrimental to silver catfish growth, since the higher the concentration of HA, the lower the weight gain and feed intake, resulting in lower biomass and lower specific growth rate of juveniles. Hence, HA is extremely damaging to the performance of silver catfish juveniles in the tested concentrations.
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spelling Growth of silver catfish ( Rhamdia quelen ) exposed to acidic pH at different humic acid levelsHumic substancewater pHfish growthorganic carbonABSTRACT: Humic substances are organic compounds that possess high molecular weight and are formed by the decomposition of plant materials. Humic substances comprise humic acids, fulvic acids and humin. Humic acids (HA) have shown to be able to provide some protection to biological membranes of fish in water with low pH, replacing the protective action of Ca2+. Thus, this studyaimed to observe growth of silver catfish ( Rhamdia quelen ) juveniles exposed to pHs 5.5 and 6.5 and to different levels of HA: 0, 10, 25 and 50mg L-1. Results showed that, irrespective of pH, HA was highly detrimental to silver catfish growth, since the higher the concentration of HA, the lower the weight gain and feed intake, resulting in lower biomass and lower specific growth rate of juveniles. Hence, HA is extremely damaging to the performance of silver catfish juveniles in the tested concentrations.Universidade Federal de Santa Maria2016-06-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782016000601094Ciência Rural v.46 n.6 2016reponame:Ciência Ruralinstname:Universidade Federal de Santa Maria (UFSM)instacron:UFSM10.1590/0103-8478cr20151027info:eu-repo/semantics/openAccessCosta,Silvio Teixeira daSutili,Fernando JonasGressler,Luciane TouremLoebens,LuízaColpo,Carine VargasLazzari,RafaelBaldisserotto,Bernardoeng2016-05-03T00:00:00ZRevista
dc.title.none.fl_str_mv Growth of silver catfish ( Rhamdia quelen ) exposed to acidic pH at different humic acid levels
title Growth of silver catfish ( Rhamdia quelen ) exposed to acidic pH at different humic acid levels
spellingShingle Growth of silver catfish ( Rhamdia quelen ) exposed to acidic pH at different humic acid levels
Costa,Silvio Teixeira da
Humic substance
water pH
fish growth
organic carbon
title_short Growth of silver catfish ( Rhamdia quelen ) exposed to acidic pH at different humic acid levels
title_full Growth of silver catfish ( Rhamdia quelen ) exposed to acidic pH at different humic acid levels
title_fullStr Growth of silver catfish ( Rhamdia quelen ) exposed to acidic pH at different humic acid levels
title_full_unstemmed Growth of silver catfish ( Rhamdia quelen ) exposed to acidic pH at different humic acid levels
title_sort Growth of silver catfish ( Rhamdia quelen ) exposed to acidic pH at different humic acid levels
author Costa,Silvio Teixeira da
author_facet Costa,Silvio Teixeira da
Sutili,Fernando Jonas
Gressler,Luciane Tourem
Loebens,Luíza
Colpo,Carine Vargas
Lazzari,Rafael
Baldisserotto,Bernardo
author_role author
author2 Sutili,Fernando Jonas
Gressler,Luciane Tourem
Loebens,Luíza
Colpo,Carine Vargas
Lazzari,Rafael
Baldisserotto,Bernardo
author2_role author
author
author
author
author
author
dc.contributor.author.fl_str_mv Costa,Silvio Teixeira da
Sutili,Fernando Jonas
Gressler,Luciane Tourem
Loebens,Luíza
Colpo,Carine Vargas
Lazzari,Rafael
Baldisserotto,Bernardo
dc.subject.por.fl_str_mv Humic substance
water pH
fish growth
organic carbon
topic Humic substance
water pH
fish growth
organic carbon
description ABSTRACT: Humic substances are organic compounds that possess high molecular weight and are formed by the decomposition of plant materials. Humic substances comprise humic acids, fulvic acids and humin. Humic acids (HA) have shown to be able to provide some protection to biological membranes of fish in water with low pH, replacing the protective action of Ca2+. Thus, this studyaimed to observe growth of silver catfish ( Rhamdia quelen ) juveniles exposed to pHs 5.5 and 6.5 and to different levels of HA: 0, 10, 25 and 50mg L-1. Results showed that, irrespective of pH, HA was highly detrimental to silver catfish growth, since the higher the concentration of HA, the lower the weight gain and feed intake, resulting in lower biomass and lower specific growth rate of juveniles. Hence, HA is extremely damaging to the performance of silver catfish juveniles in the tested concentrations.
publishDate 2016
dc.date.none.fl_str_mv 2016-06-01
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=S0103-84782016000601094
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782016000601094
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/0103-8478cr20151027
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 Universidade Federal de Santa Maria
publisher.none.fl_str_mv Universidade Federal de Santa Maria
dc.source.none.fl_str_mv Ciência Rural v.46 n.6 2016
reponame:Ciência Rural
instname:Universidade Federal de Santa Maria (UFSM)
instacron:UFSM
instname_str Universidade Federal de Santa Maria (UFSM)
instacron_str UFSM
institution UFSM
reponame_str Ciência Rural
collection Ciência Rural
repository.name.fl_str_mv
repository.mail.fl_str_mv
_version_ 1749140550415548416

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