Juvenile greenlip abalone, Haliotis laevigata, (mean whole weight 4.48 ± 1.9 g, mean ± s.d., n = 953) were highly sensitive to ammonia as indicated by depressed growth rate and food consumption measured over 2-3 months in bioassay tanks. For growth rate expressed on a whole weight basis, the EC 5 and EC 50 values (5 and 50% growth reductions) were 0.041 mg FAN l -1 (Free Ammonia-Nitrogen) and 0.158 mg FAN l -1, respectively. Shell growth rates declined over the entire experimental range (0.006-0.188 mg FAN l -1). At the end of the bioassay, groups of abalone were transferred to respiratory chambers. Oxygen consumption rate increased to a maximum of 188% of control values at 0.235 mg FAN l -1 and decreased slightly at the highest concentration of 0.418 mg FAN l -1.

Item Type:	Refereed Article
Research Division:	Agricultural, Veterinary and Food Sciences
Research Group:	Fisheries sciences
Research Field:	Aquaculture
Objective Division:	Animal Production and Animal Primary Products
Objective Group:	Fisheries - aquaculture
Objective Field:	Fisheries - aquaculture not elsewhere classified
UTAS Author:	Harris, J (Dr James Harris)
UTAS Author:	Maguire, GB (Dr Greg Maguire)
UTAS Author:	Edwards, SJ (Dr Steve Edwards)
UTAS Author:	Hindrum, SM (Mr Stephen Marcus Hindrum)
ID Code:	13660
Year Published:	1998
Web of Science® Times Cited:	82
Deposited By:	TAFI - Aquaculture
Deposited On:	1998-08-01
Last Modified:	2011-08-08
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