| Registro completo |
| Provedor de dados: |
Rev. Ciênc. Agron.
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| País: |
Brazil
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| Título: |
Acute toxicity of non-ionized ammonia on tambacu (Colossoma macropomum x Piaractus mesopotamicus)
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| Autores: |
Quaresma,Fabrízia da Silva
Santos,Fernando Luís Batista dos
Ribeiro,Pedro Florêncio
Leite,Lorena Alves
Sampaio,Alexandre Holanda
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| Data: |
2020-01-01
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| Ano: |
2020
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| Palavras-chave: |
Aquaculture
Water quality
NH3
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| Resumo: |
ABSTRACT Ammonia is a toxic compound to aquatic organisms and at high concentrations in water, it can cause various changes in the animal. Therefore, it becomes important to determine the tolerance of farmed aquatic animals for that substance. Thus, the aim of this study was to determine the mean lethal concentration (LC50-96 h) of un-ionized ammonia (NH3) in tambacu fingerlings (Colossoma macropomum x Piaractus mesopotamicus) in acute toxicity test. The fingerlings were exposed to ammonia at concentrations of: 0.09 (control); 0.54; 1.23; 2.52; 3.44 and 3.66 mg L-1 NH3, which were obtained from the application of NH4Cl. The test lasted 96 hours and mortalities were recorded over that period. The LC50 was determined by the Trimmed Spearman Karber statistical method. The LC50-96 h of non-ionized ammonia (NH3) for fingerlings of the tambacu hybrid was 1.63 mg L-1.
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| Tipo: |
Info:eu-repo/semantics/article
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| Idioma: |
Inglês
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| Identificador: |
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902020000300901
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| Editor: |
Universidade Federal do Ceará
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| Relação: |
10.5935/1806-6690.20200046
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| Formato: |
text/html
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| Fonte: |
Revista Ciência Agronômica v.51 n.3 2020
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| Direitos: |
info:eu-repo/semantics/openAccess
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