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The effect of temperature and conditioning interval on the spawning success of wild-caught blacklip (Haliotis rubra, Leach 1814) and greenlip (H. laevigata, Donovan 1808) abalone

Citation

Grubert, MA and Ritar, AJ, The effect of temperature and conditioning interval on the spawning success of wild-caught blacklip (Haliotis rubra, Leach 1814) and greenlip (H. laevigata, Donovan 1808) abalone, Aquaculture Research, 36, (7) pp. 654-665. ISSN 1355-557X (2005) [Refereed Article]

DOI: doi:10.1111/j.1365-2109.2005.01269.x

Abstract

Wild-caught blacklip (Haliotis rubra, Leach 1814) and greenlip (H. laevigata, Donovan 1808) abalone fed a formulated feed were held at 16 or 18°C for different conditioning intervals ranging from 114 to 235 days and induced to spawn using ultraviolet-irradiated seawater. They were conditioned again for a second identical period before another induction. For H. rubra, mean spawning rate of both sexes was higher in groups held at 18°C than at 16°C, as was the repeat spawning rate. Conversely, animals held at 16°C produced significantly more gametes than those at 18°C. Egg production peaked in groups held at 16°C for ≥ 165 days. While both mean and total sperm production of H. rubra varied significantly, both figures were always high. Unlike H. rubra, the spawning rate, repeat spawning rate and gamete production of both sexes of H. laevigata were higher when cultured at 16°C than at 18°C. Egg production peaked in groups conditioned at 16°C for ≥ 212 days. Both mean and total sperm production by H. laevigata were much lower than for H. rubra. This study demonstrates that year-round hatchery production of seedstock of both species is possible providing broodstock are held under favourable environmental conditions, preferably 16°C. © 2005 Blackwell Publishing Ltd.

Item Details

Item Type:Refereed Article
Research Division:Agricultural and Veterinary 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
Author:Grubert, MA (Mr Mark Grubert)
Author:Ritar, AJ (Associate Professor Arthur Ritar)
ID Code:37714
Year Published:2005
Web of Science® Times Cited:10
Deposited By:TAFI - Marine Research Laboratory
Deposited On:2005-08-01
Last Modified:2011-09-20
Downloads:0

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