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Survival and behavioural responses of cool and warm water fish sedated with AQUI ‐S ® 20E (10% eugenol) at high loading densities
Author(s) -
Cupp Aaron R,
Fredricks Kim T,
Porcher Scott T,
Smerud Justin R,
Hartleb Christopher F,
Gaikowski Mark P
Publication year - 2017
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.12992
Subject(s) - oreochromis , nile tilapia , perch , zoology , biology , tilapia , eugenol , fish <actinopterygii> , fishery , veterinary medicine , chemistry , medicine , organic chemistry
This study evaluated the effects of AQUI ‐S ® 20E (10% eugenol) sedation on the survival and behaviour of yellow perch Perca flavescens (Mitchill) and Nile tilapia Oreochromis niloticus L. held in high loading densities. Fish were held in 0–300 mg L −1 AQUI ‐S ® 20E (0–30 mg L −1 eugenol) for up to 10 h in static tanks. At 17°C, yellow perch held in 200 and 300 mg L −1 AQUI ‐S ® 20E were lightly sedated for up to 7 h. Yellow perch at 200 and 300 mg L −1 AQUI ‐S ® 20E also had >95% mean survival 7‐days post exposure using loading densities up to 360 g L −1 . Nile tilapia were only sedated for ≤3 h in concentrations up to 300 mg L −1 at 22°C and had >90% mean survival at loading densities ≤480 g L −1 . Ammonia in tanks increased significantly as loading density increased, but treatment with AQUI –S ® 20E did not reduce ammonia accumulation. Results suggest that AQUI –S ® 20E was effective to sedate yellow perch and Nile tilapia at high loading densities, but sedation varied with loading density and species.