Preference behavior of silver catfish, Rhamdia quelen, juveniles in waters with pH gradients: laboratory experiments
Autor(a) principal: | |
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Data de Publicação: | 2013 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Neotropical ichthyology (Online) |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252013000300661 |
Resumo: | The aim of this study was to determine the preferred pH in silver catfish Rhamdia quelenjuveniles acclimated to different water hardness and the effect of shelters and infection by Ichthyophthirius multifiliis. Fish were acclimated for two weeks at different water hardness levels (4, 24, 50, or 100 mg CaCO3 L-1) and then transferred to a polyethylene tube with a pH gradient ranging from 3.5 to 11.7 and maintaining the same hardness. The position of the fish in the pH gradient was observed at 1, 2, 4, 6, 8, 10, and 12 h after transfer. Acclimation to different water hardness did not change pH preference of uninfected silver catfish (pH 7.30-7.83), and the presence of a shelter at the preferred pH or outside this preferred pH did not change the chosen pH range, either. Consequently silver catfish favored the acid-base regulation over shelter seeking tendency. Juveniles infected with I. multifiliis acclimated to water hardness of 24 mg CaCO3 L-1 preferred alkaline pH (9.08-9.79). This choice is not explained by the higher Na+ levels at alkaline pH compared to neutral pH because infected and uninfected fish choose the same waterborne Na+ levels in a Na+ gradient with the same pH. |
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Preference behavior of silver catfish, Rhamdia quelen, juveniles in waters with pH gradients: laboratory experimentsBehaviorCalciumHardnessIchthyophthirius multifiliisShelterThe aim of this study was to determine the preferred pH in silver catfish Rhamdia quelenjuveniles acclimated to different water hardness and the effect of shelters and infection by Ichthyophthirius multifiliis. Fish were acclimated for two weeks at different water hardness levels (4, 24, 50, or 100 mg CaCO3 L-1) and then transferred to a polyethylene tube with a pH gradient ranging from 3.5 to 11.7 and maintaining the same hardness. The position of the fish in the pH gradient was observed at 1, 2, 4, 6, 8, 10, and 12 h after transfer. Acclimation to different water hardness did not change pH preference of uninfected silver catfish (pH 7.30-7.83), and the presence of a shelter at the preferred pH or outside this preferred pH did not change the chosen pH range, either. Consequently silver catfish favored the acid-base regulation over shelter seeking tendency. Juveniles infected with I. multifiliis acclimated to water hardness of 24 mg CaCO3 L-1 preferred alkaline pH (9.08-9.79). This choice is not explained by the higher Na+ levels at alkaline pH compared to neutral pH because infected and uninfected fish choose the same waterborne Na+ levels in a Na+ gradient with the same pH.Sociedade Brasileira de Ictiologia2013-09-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252013000300661Neotropical Ichthyology v.11 n.3 2013reponame:Neotropical ichthyology (Online)instname:Sociedade Brasileira de Ictiologia (SBI)instacron:SBI10.1590/S1679-62252013000300019info:eu-repo/semantics/openAccessGolombieski,Jaqueline IneuBecker,Alessandra JanaínaAlmeida,Caroline BruzzaAlmeida,Ana Paula GottliebBaldisserotto,Bernardoeng2015-10-09T00:00:00Zoai:scielo:S1679-62252013000300661Revistahttp://www.ufrgs.br/ni/https://old.scielo.br/oai/scielo-oai.php||neoichth@nupelia.uem.br1982-02241679-6225opendoar:2015-10-09T00:00Neotropical ichthyology (Online) - Sociedade Brasileira de Ictiologia (SBI)false |
dc.title.none.fl_str_mv |
Preference behavior of silver catfish, Rhamdia quelen, juveniles in waters with pH gradients: laboratory experiments |
title |
Preference behavior of silver catfish, Rhamdia quelen, juveniles in waters with pH gradients: laboratory experiments |
spellingShingle |
Preference behavior of silver catfish, Rhamdia quelen, juveniles in waters with pH gradients: laboratory experiments Golombieski,Jaqueline Ineu Behavior Calcium Hardness Ichthyophthirius multifiliis Shelter |
title_short |
Preference behavior of silver catfish, Rhamdia quelen, juveniles in waters with pH gradients: laboratory experiments |
title_full |
Preference behavior of silver catfish, Rhamdia quelen, juveniles in waters with pH gradients: laboratory experiments |
title_fullStr |
Preference behavior of silver catfish, Rhamdia quelen, juveniles in waters with pH gradients: laboratory experiments |
title_full_unstemmed |
Preference behavior of silver catfish, Rhamdia quelen, juveniles in waters with pH gradients: laboratory experiments |
title_sort |
Preference behavior of silver catfish, Rhamdia quelen, juveniles in waters with pH gradients: laboratory experiments |
author |
Golombieski,Jaqueline Ineu |
author_facet |
Golombieski,Jaqueline Ineu Becker,Alessandra Janaína Almeida,Caroline Bruzza Almeida,Ana Paula Gottlieb Baldisserotto,Bernardo |
author_role |
author |
author2 |
Becker,Alessandra Janaína Almeida,Caroline Bruzza Almeida,Ana Paula Gottlieb Baldisserotto,Bernardo |
author2_role |
author author author author |
dc.contributor.author.fl_str_mv |
Golombieski,Jaqueline Ineu Becker,Alessandra Janaína Almeida,Caroline Bruzza Almeida,Ana Paula Gottlieb Baldisserotto,Bernardo |
dc.subject.por.fl_str_mv |
Behavior Calcium Hardness Ichthyophthirius multifiliis Shelter |
topic |
Behavior Calcium Hardness Ichthyophthirius multifiliis Shelter |
description |
The aim of this study was to determine the preferred pH in silver catfish Rhamdia quelenjuveniles acclimated to different water hardness and the effect of shelters and infection by Ichthyophthirius multifiliis. Fish were acclimated for two weeks at different water hardness levels (4, 24, 50, or 100 mg CaCO3 L-1) and then transferred to a polyethylene tube with a pH gradient ranging from 3.5 to 11.7 and maintaining the same hardness. The position of the fish in the pH gradient was observed at 1, 2, 4, 6, 8, 10, and 12 h after transfer. Acclimation to different water hardness did not change pH preference of uninfected silver catfish (pH 7.30-7.83), and the presence of a shelter at the preferred pH or outside this preferred pH did not change the chosen pH range, either. Consequently silver catfish favored the acid-base regulation over shelter seeking tendency. Juveniles infected with I. multifiliis acclimated to water hardness of 24 mg CaCO3 L-1 preferred alkaline pH (9.08-9.79). This choice is not explained by the higher Na+ levels at alkaline pH compared to neutral pH because infected and uninfected fish choose the same waterborne Na+ levels in a Na+ gradient with the same pH. |
publishDate |
2013 |
dc.date.none.fl_str_mv |
2013-09-01 |
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=S1679-62252013000300661 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252013000300661 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/S1679-62252013000300019 |
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 |
Sociedade Brasileira de Ictiologia |
publisher.none.fl_str_mv |
Sociedade Brasileira de Ictiologia |
dc.source.none.fl_str_mv |
Neotropical Ichthyology v.11 n.3 2013 reponame:Neotropical ichthyology (Online) instname:Sociedade Brasileira de Ictiologia (SBI) instacron:SBI |
instname_str |
Sociedade Brasileira de Ictiologia (SBI) |
instacron_str |
SBI |
institution |
SBI |
reponame_str |
Neotropical ichthyology (Online) |
collection |
Neotropical ichthyology (Online) |
repository.name.fl_str_mv |
Neotropical ichthyology (Online) - Sociedade Brasileira de Ictiologia (SBI) |
repository.mail.fl_str_mv |
||neoichth@nupelia.uem.br |
_version_ |
1752122180898914304 |