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Assessing the toxicity of peracetic acid to early Atlantic salmon Salmo salar life‐stages
Author(s) -
Redman Natalie,
Straus David L.,
Annis Eric R.,
Murray Megan,
Good Christopher
Publication year - 2022
Publication title -
aquaculture research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.646
H-Index - 89
eISSN - 1365-2109
pISSN - 1355-557X
DOI - 10.1111/are.15997
Subject(s) - salmo , peracetic acid , biology , toxicity , disinfectant , fishery , aquaculture , zoology , toxicology , fish <actinopterygii> , biochemistry , chemistry , hydrogen peroxide , organic chemistry
Bacterial and fungal pathogens in recirculating aquaculture and egg incubation systems can cause elevated mortality and decreased production. Peracetic acid (PAA) is a relatively low‐cost, safe, and effective disinfectant; however, its toxicity to early life stages of the Atlantic salmon ( Salmo salar ) has not been assessed. The 24‐h LC50 value of PAA was determined for three early life stages of Atlantic salmon: eyed eggs, fry (~0.17 g), and fingerlings (~16.3 g). LC50 values were calculated using the Trimmed Spearman‐Karber (TSK) method and Toxicity Relationship Analysis Program (TRAP). TRAP LC50 values for eyed eggs treated for 5 and 10 min were 781.5 and 485.0 mg/L PAA, respectively, while TSK LC50 values for eyed eggs treated for 5 and 10 min were 771.1 and 462.1 mg/L PAA, respectively. TRAP LC50 values for fry and fingerlings were 4.0 and 5.3 mg/L PAA, respectively, while TSK LC50 values for fry and fingerling were 4.1 and 5.3 mg/L PAA, respectively. The no observed effect concentration (NOEC) values for eyed eggs treated for 5 and 10 min were 500 and 300 mg/L PAA, respectively. These LC50 and NOEC values provide guidance for developing safe PAA treatment protocols Atlantic salmon eggs, fry, and/or fingerlings.