Physical and chemical water parameters and Streptococcus spp. occurrence in intensive tilapia farming in the State of Espírito Santo, Brazil - doi: 10.4025/actascibiolsci.v35i1.11797
Autor(a) principal: | |
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Data de Publicação: | 2012 |
Outros Autores: | |
Tipo de documento: | Artigo |
Idioma: | por eng |
Título da fonte: | Acta Scientiarum Biological Sciences |
Texto Completo: | http://www.periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/11797 |
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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Physical and chemical water parameters and Streptococcus spp. occurrence in intensive tilapia farming in the State of Espírito Santo, Brazil - doi: 10.4025/actascibiolsci.v35i1.11797lakeaquaculture standardsnet cageCiências BiológicasThis 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. Universidade Estadual De Maringá2012-07-19info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionComposição físico-químicaapplication/pdfapplication/pdfhttp://www.periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/1179710.4025/actascibiolsci.v35i1.11797Acta Scientiarum. Biological Sciences; Vol 35 No 1 (2013); 29-35Acta Scientiarum. Biological Sciences; v. 35 n. 1 (2013); 29-351807-863X1679-9283reponame:Acta Scientiarum Biological Sciencesinstname:Universidade Estadual de Maringá (UEM)instacron:UEMporenghttp://www.periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/11797/pdfhttp://www.periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/11797/pdf_1Suhet, Maria IsabelSchocken-Iturrino, Ruben Pabloinfo:eu-repo/semantics/openAccess2022-11-23T17:34:05Zoai:periodicos.uem.br/ojs:article/11797Revistahttp://www.periodicos.uem.br/ojs/index.php/ActaSciBiolSciPUBhttp://www.periodicos.uem.br/ojs/index.php/ActaSciBiolSci/oai||actabiol@uem.br1807-863X1679-9283opendoar:2022-11-23T17:34:05Acta Scientiarum Biological Sciences - Universidade Estadual de Maringá (UEM)false |
dc.title.none.fl_str_mv |
Physical and chemical water parameters and Streptococcus spp. occurrence in intensive tilapia farming in the State of Espírito Santo, Brazil - doi: 10.4025/actascibiolsci.v35i1.11797 |
title |
Physical and chemical water parameters and Streptococcus spp. occurrence in intensive tilapia farming in the State of Espírito Santo, Brazil - doi: 10.4025/actascibiolsci.v35i1.11797 |
spellingShingle |
Physical and chemical water parameters and Streptococcus spp. occurrence in intensive tilapia farming in the State of Espírito Santo, Brazil - doi: 10.4025/actascibiolsci.v35i1.11797 Suhet, Maria Isabel lake aquaculture standards net cage Ciências Biológicas |
title_short |
Physical and chemical water parameters and Streptococcus spp. occurrence in intensive tilapia farming in the State of Espírito Santo, Brazil - doi: 10.4025/actascibiolsci.v35i1.11797 |
title_full |
Physical and chemical water parameters and Streptococcus spp. occurrence in intensive tilapia farming in the State of Espírito Santo, Brazil - doi: 10.4025/actascibiolsci.v35i1.11797 |
title_fullStr |
Physical and chemical water parameters and Streptococcus spp. occurrence in intensive tilapia farming in the State of Espírito Santo, Brazil - doi: 10.4025/actascibiolsci.v35i1.11797 |
title_full_unstemmed |
Physical and chemical water parameters and Streptococcus spp. occurrence in intensive tilapia farming in the State of Espírito Santo, Brazil - doi: 10.4025/actascibiolsci.v35i1.11797 |
title_sort |
Physical and chemical water parameters and Streptococcus spp. occurrence in intensive tilapia farming in the State of Espírito Santo, Brazil - doi: 10.4025/actascibiolsci.v35i1.11797 |
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.author.fl_str_mv |
Suhet, Maria Isabel Schocken-Iturrino, Ruben Pablo |
dc.subject.por.fl_str_mv |
lake aquaculture standards net cage Ciências Biológicas |
topic |
lake aquaculture standards net cage Ciências Biológicas |
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 |
2012 |
dc.date.none.fl_str_mv |
2012-07-19 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Composição físico-química |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://www.periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/11797 10.4025/actascibiolsci.v35i1.11797 |
url |
http://www.periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/11797 |
identifier_str_mv |
10.4025/actascibiolsci.v35i1.11797 |
dc.language.iso.fl_str_mv |
por eng |
language |
por eng |
dc.relation.none.fl_str_mv |
http://www.periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/11797/pdf http://www.periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/11797/pdf_1 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf application/pdf |
dc.publisher.none.fl_str_mv |
Universidade Estadual De Maringá |
publisher.none.fl_str_mv |
Universidade Estadual De Maringá |
dc.source.none.fl_str_mv |
Acta Scientiarum. Biological Sciences; Vol 35 No 1 (2013); 29-35 Acta Scientiarum. Biological Sciences; v. 35 n. 1 (2013); 29-35 1807-863X 1679-9283 reponame:Acta Scientiarum Biological Sciences instname:Universidade Estadual de Maringá (UEM) instacron:UEM |
instname_str |
Universidade Estadual de Maringá (UEM) |
instacron_str |
UEM |
institution |
UEM |
reponame_str |
Acta Scientiarum Biological Sciences |
collection |
Acta Scientiarum Biological Sciences |
repository.name.fl_str_mv |
Acta Scientiarum Biological Sciences - Universidade Estadual de Maringá (UEM) |
repository.mail.fl_str_mv |
||actabiol@uem.br |
_version_ |
1799317395481821184 |