Brownlip Abalone (2018)
Haliotis rubra conicopora
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Brownlip Abalone is found along Australia’s southwest coast. In WA there are two management areas, in one the stock is sustainable and in the other depleting. The stock in SA is undefined, with limited information available.
Stock Status Overview
|South Australia||South Australia Western Zone Fishery||SAWZF||Undefined|
- South Australia Western Zone Fishery (SA)
Brownlip Abalone is distributed from the south-west of Western Australia to the west of South Australia. Brownlip Abalone are endemic to the south-west of Australia, but there is evidence to suggest that they are genetically similar to, and potentially conspecific with, Blacklip Abalone (Haliotis rubra rubra) [Brown and Murray 1992], which are distributed east from Western Australia across southern mainland Australia to northern New South Wales and Tasmania. The biological stock structure of Brownlip Abalone has not been examined. As there is no genetic evidence to confirm biological stock structure of Brownlip Abalone, assessment of stock status is presented here at the management unit level—Western Australia Area 2 Fishery, Western Australia Area 3 Fishery and South Australia Western Zone Fishery.
South Australia Western Zone Fishery
This species is rare in South Australia. In the catch returns of commercial fishers, Brownlip Abalone is not differentiated from Blacklip Abalone, which is classified as depleting. There is no reported catch of Brownlip Abalone by commercial or recreational fishers in South Australia. There is no published assessment of this species for the South Australia Western Zone Fishery (SAWZF), and there are no data available to estimate biomass or exploitation rates. In addition, there is no knowledge on recruitment or harvestable biomass, and there are no defined target or limit reference levels. This prevents assessment of current stock size or fishing pressure. Consequently, there is insufficient information available to confidently classify the status of this stock.
Based on the evidence provided above, the South Australia Western Zone Fishery management unit is classified as an undefined stock.
Brownlip Abalone biology [Strain et al. 2017; Wells and Mulvay 1992]
|Species||Longevity / Maximum Size||Maturity (50 per cent)|
|Brownlip Abalone||20 years, 220 mm SL||4–6 years, 110–130 mm SL|
Distribution of reported commercial catch of Brownlip Abalone
|Total allowable catch|
- Brown, LD and Murray, ND 1992, Genetic relationships within the genus Haliotis. In: Abalone of the World: Biology, Fisheries and Culture. Shepherd, SA, Tegner, MJ, and Guzman del Proo, SA (eds). Blackwell Scientific Publications Ltd, Oxford, pp.19–23.
- Department of Fisheries (DoF), Western Australia 2017, Abalone resource of Western Australia harvest strategy 2016–2021. Fisheries Management Paper No. 283. Department of Fisheries, Western Australia, Perth. 36pp.
- Hart, A, Strain, L, Hesp, A, Fisher, E, Webster, F, Brand-Gardner, S and Walter, S 2017, Marine Stewardship Council full assessment report Western Australian Abalone Managed Fishery. Department of Fisheries, Western Australia, Perth. 288pp.
- Strain, LWS, Hesp, SA, Fabris, F, and Hart, AM 2017, Demographic performance of Brownlip abalone: exploration of wild and cultured harvest potential. FRDC Project No. 2012/016. Fisheries Research Report No. 280. Department of Fisheries, Western Australia, Perth. 104pp.
- Wells, FE and Mulvay, P 1992, Reproduction and growth of the Greenlip abalone Haliotis laevigata on the south coast of Western Australia. Unpublished report to the Western Australian Department of Fisheries, 117pp.