Effects of Water pH and Hardness on Infection of Silver Catfish, Rhamdia quelen, Fingerlings by Ichthyophthirius multifiliis
The aim of this study is to determine the effect of (1) different pH levels (5, 6, 7, 8, and 9) with water hardness 20 mg/L CaCO3 and (2) pH 5 and 7 with varying water hardnesses (20, 60, and 120 mg/L CaCO3) on the intensity of infection by Ichthyophthirius multifiliis in fingerlings of the silver c...
| Autor principal: | Garcia, Luciano |
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| Outros Autores: | Becker, Alexssandro Geferson, Cunha, Mauro Alves da, Baldisserotto, Bernardo, Copatti, Carlos Eduardo, Kochhann, Daiani |
| Grau: | Artigo |
| Idioma: | English |
| Publicado em: |
Journal of the World Aquaculture Society
2020
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| Acesso em linha: |
https://repositorio.inpa.gov.br/handle/1/18192 |
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oai:repositorio:1-18192 |
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oai:repositorio:1-18192 Effects of Water pH and Hardness on Infection of Silver Catfish, Rhamdia quelen, Fingerlings by Ichthyophthirius multifiliis Garcia, Luciano Becker, Alexssandro Geferson Cunha, Mauro Alves da Baldisserotto, Bernardo Copatti, Carlos Eduardo Kochhann, Daiani Disease Severity Experimental Study Host-pathogen Interaction Infectivity Mortality Ph Survival Water Chemistry Ichthyophthirius Multifiliis Rhamdia Quelen The aim of this study is to determine the effect of (1) different pH levels (5, 6, 7, 8, and 9) with water hardness 20 mg/L CaCO3 and (2) pH 5 and 7 with varying water hardnesses (20, 60, and 120 mg/L CaCO3) on the intensity of infection by Ichthyophthirius multifiliis in fingerlings of the silver catfish, Rhamdia quelen. In Experiment 1, the lowest and highest mortality rates were observed in fingerlings exposed to pH 5 and 9, respectively; in Experiment 2, fish kept at pH 5 and 7 with hardness 20 mg/L CaCO3 showed significantly lowest and highest cumulative mortality, respectively, than those maintained in other conditions. The lowest intensity of trophonts/fingerling was observed at pH 5 and hardness 20 mg/L CaCO3 in both experiments. We conclude that infection by I. multifiliis is less severe in silver catfish maintained at pH 5 and hardness 20 mg/L CaCO3. High water hardness led to an increased intensity of trophonts and decreased survival in silver catfish kept at pH 5, but decreased intensity of trophonts and improved survival when the fish were kept at pH 7. © by the World Aquaculture Society 2011. 2020-06-15T21:52:28Z 2020-06-15T21:52:28Z 2011 Artigo https://repositorio.inpa.gov.br/handle/1/18192 10.1111/j.1749-7345.2011.00479.x en Volume 42, Número 3, Pags. 399-405 Restrito Journal of the World Aquaculture Society |
| institution |
Instituto Nacional de Pesquisas da Amazônia - Repositório Institucional |
| collection |
INPA-RI |
| language |
English |
| topic |
Disease Severity Experimental Study Host-pathogen Interaction Infectivity Mortality Ph Survival Water Chemistry Ichthyophthirius Multifiliis Rhamdia Quelen |
| spellingShingle |
Disease Severity Experimental Study Host-pathogen Interaction Infectivity Mortality Ph Survival Water Chemistry Ichthyophthirius Multifiliis Rhamdia Quelen Garcia, Luciano Effects of Water pH and Hardness on Infection of Silver Catfish, Rhamdia quelen, Fingerlings by Ichthyophthirius multifiliis |
| topic_facet |
Disease Severity Experimental Study Host-pathogen Interaction Infectivity Mortality Ph Survival Water Chemistry Ichthyophthirius Multifiliis Rhamdia Quelen |
| description |
The aim of this study is to determine the effect of (1) different pH levels (5, 6, 7, 8, and 9) with water hardness 20 mg/L CaCO3 and (2) pH 5 and 7 with varying water hardnesses (20, 60, and 120 mg/L CaCO3) on the intensity of infection by Ichthyophthirius multifiliis in fingerlings of the silver catfish, Rhamdia quelen. In Experiment 1, the lowest and highest mortality rates were observed in fingerlings exposed to pH 5 and 9, respectively; in Experiment 2, fish kept at pH 5 and 7 with hardness 20 mg/L CaCO3 showed significantly lowest and highest cumulative mortality, respectively, than those maintained in other conditions. The lowest intensity of trophonts/fingerling was observed at pH 5 and hardness 20 mg/L CaCO3 in both experiments. We conclude that infection by I. multifiliis is less severe in silver catfish maintained at pH 5 and hardness 20 mg/L CaCO3. High water hardness led to an increased intensity of trophonts and decreased survival in silver catfish kept at pH 5, but decreased intensity of trophonts and improved survival when the fish were kept at pH 7. © by the World Aquaculture Society 2011. |
| format |
Artigo |
| author |
Garcia, Luciano |
| author2 |
Becker, Alexssandro Geferson Cunha, Mauro Alves da Baldisserotto, Bernardo Copatti, Carlos Eduardo Kochhann, Daiani |
| author2Str |
Becker, Alexssandro Geferson Cunha, Mauro Alves da Baldisserotto, Bernardo Copatti, Carlos Eduardo Kochhann, Daiani |
| title |
Effects of Water pH and Hardness on Infection of Silver Catfish, Rhamdia quelen, Fingerlings by Ichthyophthirius multifiliis |
| title_short |
Effects of Water pH and Hardness on Infection of Silver Catfish, Rhamdia quelen, Fingerlings by Ichthyophthirius multifiliis |
| title_full |
Effects of Water pH and Hardness on Infection of Silver Catfish, Rhamdia quelen, Fingerlings by Ichthyophthirius multifiliis |
| title_fullStr |
Effects of Water pH and Hardness on Infection of Silver Catfish, Rhamdia quelen, Fingerlings by Ichthyophthirius multifiliis |
| title_full_unstemmed |
Effects of Water pH and Hardness on Infection of Silver Catfish, Rhamdia quelen, Fingerlings by Ichthyophthirius multifiliis |
| title_sort |
effects of water ph and hardness on infection of silver catfish, rhamdia quelen, fingerlings by ichthyophthirius multifiliis |
| publisher |
Journal of the World Aquaculture Society |
| publishDate |
2020 |
| url |
https://repositorio.inpa.gov.br/handle/1/18192 |
| _version_ |
1787144137119629312 |
| score |
11.755432 |