Restocking depleted wild stocks—long-term survival and impact of released blacklip abalone (Haliotis rubra) on depleted wild populations in New South Wales, Australia

Chick, Rowan C., Worthington, Duncan G., and Kingsford, Michael J. (2013) Restocking depleted wild stocks—long-term survival and impact of released blacklip abalone (Haliotis rubra) on depleted wild populations in New South Wales, Australia. Reviews in Fisheries Science, 21 (3-4). pp. 321-340.

[img] PDF (Published Version) - Published Version
Restricted to Repository staff only

View at Publisher Website: http://dx.doi.org/10.1080/10641262.2013....
 
7
2


Abstract

The potential for restocking with hatchery organisms as a tool to rebuild depleted populations of blacklip abalone (Haliotis rubra) was investigated through replicated, control-impact studies in New South Wales, Australia. Long-term survival (>2 years) of hatchery-reared and released abalone, their impact on wild abalone abundance, and the effect of diffuse versus concentrated release was investigated on natural reefs. Long-term survival of released hatchery abalone varied between releases but averaged about that expected for wild abalone. There was no significant effect of released juveniles on the persistence or recruitment of wild abalone. Significantly greater numbers of all (released and wild) abalone persisted at release locations through time, while the total number of wild abalone increased significantly through time at release and control locations. There was no significant difference in long-term survival of abalone released in clusters of high density (2–4%) or in a diffuse or concentrated array (0–9%). These results show that restocking can supplement natural rebuilding processes of depleted wild abalone populations in New South Wales, Australia.

Item ID: 32022
Item Type: Article (Refereed Research - C1)
Keywords: fishery, stock-enhancement, rebuilding, management, experimental controls
ISSN: 1547-6553
Funders: Fisheries Research and Development Corporation (FRDC)
Projects and Grants: FRDC project no. 1998/219
Date Deposited: 21 Mar 2014 06:21
FoR Codes: 07 AGRICULTURAL AND VETERINARY SCIENCES > 0702 Animal Production > 070203 Animal Management @ 100%
SEO Codes: 96 ENVIRONMENT > 9608 Flora, Fauna and Biodiversity > 960802 Coastal and Estuarine Flora, Fauna and Biodiversity @ 100%
Downloads: Total: 2
More Statistics

Actions (Repository Staff Only)

Item Control Page Item Control Page