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Effects of nitrogenous wastes on survival of the Barton Springs salamander (Eurycea sosorum)

Justin C Crow¹, Kenneth G Ostrand¹, Michael R J Forstner²

¹San Marcos Aquatic Resources Center, United States Fish and Wildlife Service, San Marcos, Texas, USA.

Environmental Toxicology and Chemistry

|May 26, 2017

Abstract:

The objective of our study was to determine the acute toxicity of 3 common aquatic nitrogenous toxicants to the federally endangered Barton Springs salamander (Eurycea sosorum). Based on our findings, the 96-h median lethal concentrations (96-h LC50) for un-ionized ammonia-N, nitrite-N, and nitrate-N to E. sosorum are 2.0 ± 0.32, 31.7 ± 4.02, and 968.5 ± 150.6 mg/L, respectively. These results establish a benchmark for the tolerance of plethodontid salamanders to these toxicants and indicate that current water quality criteria are adequate for their protection. Environ Toxicol Chem 2017;36:3003-3007. © 2017 SETAC.

Keywords:

Amphibian Conservation Endangered Salamander Toxicity

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