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- Title
Acute Toxicity of Ammonia, Nitrite and Nitrate to Shrimp Litopenaeus vannamei Postlarvae in Low-Salinity Water.
- Authors
Valencia-Castañeda, Gladys; Frías-Espericueta, Martin G.; Vanegas-Pérez, Ruth C.; Pérez-Ramírez, Jesús A.; Chávez-Sánchez, María C.; Páez-Osuna, Federico
- Abstract
Shrimp farming in low salinities waters is an alternative to increasing production, and counteracting disease problems in brackish and marine waters. However, in low-salinity waters, toxicity of nitrogen compounds increases, and there is no available data of its acute toxicity in shrimp postlarvae. This study determined the acute toxicity of ammonia, nitrite and nitrate in Litopenaeus vannamei postlarvae in 1 and 3 g/L salinity, as well as the safety levels. The LC50 confirms that nitrite is more toxic than ammonia and nitrate in low salinity waters, and that its toxicity increases with a decrease in salinity. The safe levels estimated for salinities of 1 and 3 g/L were 0.54 and 0.81 mg/L for total ammonia-N, 0.17 and 0.25 mg/L for NO2-N, and 5.6 and 21.5 mg/L for NO3-N, respectively.
- Subjects
SHRIMP culture; WHITELEG shrimp; WATER salinization; WATER pollution; BRACKISH waters; SALINE waters; AMMONIA poisoning
- Publication
Bulletin of Environmental Contamination & Toxicology, 2018, Vol 101, Issue 2, p229
- ISSN
0007-4861
- Publication type
Article
- DOI
10.1007/s00128-018-2355-z