Parâmetros físico-químicos da água e ocorrência de streptococcus spp. em criação intensiva de tilápia no estado do espírito Santo, Brasil
Autor(a) principal: | |
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Data de Publicação: | 2013 |
Outros Autores: | |
Tipo de documento: | Artigo |
Idioma: | eng por |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.4025/actascibiolsci.v35i1.11797 http://hdl.handle.net/11449/74355 |
Resumo: | This study evaluated the influence of intensive farming of tilapia on physical and chemical parameters and on the occurrence of Streptococcus spp. in the water of the lake and of cages. Throughout a year, monthly samplings were taken in the rainy and dry seasons for a year, at two sampling sites, lake and net cages. For the determination of water quality, physical and chemical water parameters were evaluated and compared to the standards established by Conama Resolution no. 357/2005. The presence of Streptococcus spp. in the water was determined by plating on blood Agar and biochemical screening. Mean values of water parameters were tested using the Kruskal-Wallis test comparing sampling sites and seasons. Ammoniacal nitrogen (ammoniacal-N), total phosphorus (total-P) levels and occurrence of Streptococcus spp. have increased in the water of the net cages. The mean values of several parameters have decreased during the rainy period, except for pH, temperature and ammoniacal-N. Total-P and dissolved oxygen levels, during dry and rainy periods, respectively, exceeded the standard established for freshwater class 2, recommended for aquaculture, which can be harmful to the fish. Therefore, constant monitoring of the physical,chemical and microbiological water parameters is recommended since the Juara lake is also used for recreational purposes. |
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Parâmetros físico-químicos da água e ocorrência de streptococcus spp. em criação intensiva de tilápia no estado do espírito Santo, BrasilPhysical and chemical water parameters and Streptococcus spp. occurrence in intensive tilapia farming in the state of espírito Santo, BrazilAquaculture standardsLakeNet cageaquaculturebacterial virulencebacterium detectionBrazilchemical parametersnonhumanpHphysical parameterspisciculturescreening testseasonal variationStreptococcustemperatureTilapiawater qualityThis study evaluated the influence of intensive farming of tilapia on physical and chemical parameters and on the occurrence of Streptococcus spp. in the water of the lake and of cages. Throughout a year, monthly samplings were taken in the rainy and dry seasons for a year, at two sampling sites, lake and net cages. For the determination of water quality, physical and chemical water parameters were evaluated and compared to the standards established by Conama Resolution no. 357/2005. The presence of Streptococcus spp. in the water was determined by plating on blood Agar and biochemical screening. Mean values of water parameters were tested using the Kruskal-Wallis test comparing sampling sites and seasons. Ammoniacal nitrogen (ammoniacal-N), total phosphorus (total-P) levels and occurrence of Streptococcus spp. have increased in the water of the net cages. The mean values of several parameters have decreased during the rainy period, except for pH, temperature and ammoniacal-N. Total-P and dissolved oxygen levels, during dry and rainy periods, respectively, exceeded the standard established for freshwater class 2, recommended for aquaculture, which can be harmful to the fish. Therefore, constant monitoring of the physical,chemical and microbiological water parameters is recommended since the Juara lake is also used for recreational purposes.Programa de Pós-graduação em Microbiologia Agropecuária Faculdade de Ciências Agrárias e Veterinárias, Via de Acesso Prof. Paulo Donato Castellane, s/n., 14884-900, Jaboticabal, São PauloUniversidade Estadual Paulista (Unesp)Suhet, Maria IsabelSchocken-Iturrino, Ruben Pablo2014-05-27T11:28:02Z2014-05-27T11:28:02Z2013-01-07info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article29-35application/pdfhttp://dx.doi.org/10.4025/actascibiolsci.v35i1.11797Acta Scientiarum - Biological Sciences, v. 35, n. 1, p. 29-35, 2013.1679-92831807-863Xhttp://hdl.handle.net/11449/7435510.4025/actascibiolsci.v35i1.117972-s2.0-848718059882-s2.0-84871805988.pdfScopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengporActa Scientiarum: Biological Sciences0,208info:eu-repo/semantics/openAccess2024-01-21T06:22:15Zoai:repositorio.unesp.br:11449/74355Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-01-21T06:22:15Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Parâmetros físico-químicos da água e ocorrência de streptococcus spp. em criação intensiva de tilápia no estado do espírito Santo, Brasil Physical and chemical water parameters and Streptococcus spp. occurrence in intensive tilapia farming in the state of espírito Santo, Brazil |
title |
Parâmetros físico-químicos da água e ocorrência de streptococcus spp. em criação intensiva de tilápia no estado do espírito Santo, Brasil |
spellingShingle |
Parâmetros físico-químicos da água e ocorrência de streptococcus spp. em criação intensiva de tilápia no estado do espírito Santo, Brasil Suhet, Maria Isabel Aquaculture standards Lake Net cage aquaculture bacterial virulence bacterium detection Brazil chemical parameters nonhuman pH physical parameters pisciculture screening test seasonal variation Streptococcus temperature Tilapia water quality |
title_short |
Parâmetros físico-químicos da água e ocorrência de streptococcus spp. em criação intensiva de tilápia no estado do espírito Santo, Brasil |
title_full |
Parâmetros físico-químicos da água e ocorrência de streptococcus spp. em criação intensiva de tilápia no estado do espírito Santo, Brasil |
title_fullStr |
Parâmetros físico-químicos da água e ocorrência de streptococcus spp. em criação intensiva de tilápia no estado do espírito Santo, Brasil |
title_full_unstemmed |
Parâmetros físico-químicos da água e ocorrência de streptococcus spp. em criação intensiva de tilápia no estado do espírito Santo, Brasil |
title_sort |
Parâmetros físico-químicos da água e ocorrência de streptococcus spp. em criação intensiva de tilápia no estado do espírito Santo, Brasil |
author |
Suhet, Maria Isabel |
author_facet |
Suhet, Maria Isabel Schocken-Iturrino, Ruben Pablo |
author_role |
author |
author2 |
Schocken-Iturrino, Ruben Pablo |
author2_role |
author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) |
dc.contributor.author.fl_str_mv |
Suhet, Maria Isabel Schocken-Iturrino, Ruben Pablo |
dc.subject.por.fl_str_mv |
Aquaculture standards Lake Net cage aquaculture bacterial virulence bacterium detection Brazil chemical parameters nonhuman pH physical parameters pisciculture screening test seasonal variation Streptococcus temperature Tilapia water quality |
topic |
Aquaculture standards Lake Net cage aquaculture bacterial virulence bacterium detection Brazil chemical parameters nonhuman pH physical parameters pisciculture screening test seasonal variation Streptococcus temperature Tilapia water quality |
description |
This study evaluated the influence of intensive farming of tilapia on physical and chemical parameters and on the occurrence of Streptococcus spp. in the water of the lake and of cages. Throughout a year, monthly samplings were taken in the rainy and dry seasons for a year, at two sampling sites, lake and net cages. For the determination of water quality, physical and chemical water parameters were evaluated and compared to the standards established by Conama Resolution no. 357/2005. The presence of Streptococcus spp. in the water was determined by plating on blood Agar and biochemical screening. Mean values of water parameters were tested using the Kruskal-Wallis test comparing sampling sites and seasons. Ammoniacal nitrogen (ammoniacal-N), total phosphorus (total-P) levels and occurrence of Streptococcus spp. have increased in the water of the net cages. The mean values of several parameters have decreased during the rainy period, except for pH, temperature and ammoniacal-N. Total-P and dissolved oxygen levels, during dry and rainy periods, respectively, exceeded the standard established for freshwater class 2, recommended for aquaculture, which can be harmful to the fish. Therefore, constant monitoring of the physical,chemical and microbiological water parameters is recommended since the Juara lake is also used for recreational purposes. |
publishDate |
2013 |
dc.date.none.fl_str_mv |
2013-01-07 2014-05-27T11:28:02Z 2014-05-27T11:28:02Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.4025/actascibiolsci.v35i1.11797 Acta Scientiarum - Biological Sciences, v. 35, n. 1, p. 29-35, 2013. 1679-9283 1807-863X http://hdl.handle.net/11449/74355 10.4025/actascibiolsci.v35i1.11797 2-s2.0-84871805988 2-s2.0-84871805988.pdf |
url |
http://dx.doi.org/10.4025/actascibiolsci.v35i1.11797 http://hdl.handle.net/11449/74355 |
identifier_str_mv |
Acta Scientiarum - Biological Sciences, v. 35, n. 1, p. 29-35, 2013. 1679-9283 1807-863X 10.4025/actascibiolsci.v35i1.11797 2-s2.0-84871805988 2-s2.0-84871805988.pdf |
dc.language.iso.fl_str_mv |
eng por |
language |
eng por |
dc.relation.none.fl_str_mv |
Acta Scientiarum: Biological Sciences 0,208 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
29-35 application/pdf |
dc.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
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1799965682866061312 |