Survivorship and growth of the sea cucumber Australostichopus (Stichopus) mollis (Hutton 1872) in polyculture trials with green-lipped mussel farms

Slater, Matthew J, and Carton, Alexander G. (2007) Survivorship and growth of the sea cucumber Australostichopus (Stichopus) mollis (Hutton 1872) in polyculture trials with green-lipped mussel farms. Aquaculture, 272 (1). pp. 389-398.

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Abstract

The suitability of the common New Zealand sea cucumber Australostichopus mollis to polyculture with green-lipped mussels was investigated in a six-month field study. Sea cucumbers were caged at three densities (2.5, 5 and 15 ind m⁻²) on the seabed beneath an operating mussel farm and survivorship and growth (weight change) monitored on a monthly basis. The sea cucumbers transplanted to below an operating farm showed excellent survivorship (91.7% overall) over the period of the study and exhibited growth at densities exceeding observed natural densities. Growth was density-dependent and at the highest densities appeared to be constrained by food limitation. A. mollis held at 2.5 and 5 ind m⁻² gained 15.37%±5.33 (mean±SE) and 13.16%±3.42 of their pre-caged body weight, respectively, while those caged at a density of 15 ind m⁻² showed a 0.21%±2.12 weight loss over the sixmonth trial. In addition, the acceptability of mussel farm-impacted sediment as a food source was investigated in tank-based feeding experiments with wild-collected A. mollis. Adult A. mollis readily consumed mussel farm-impacted sediment in laboratory feeding experiments, consuming 6.70 g±1.59 (mean±SE) wet weight mussel sediment d⁻¹. These results clearly indicate that A. mollis is an ideal candidate for polyculture with green-lipped mussel farms.

Item ID: 9177
Item Type: Article (Refereed Research - C1)
Keywords: Stichopus mollis; polyculture; sediments; mussel farms; sea cucumber; waste conversion; aquaculture
ISSN: 1873-5622
Date Deposited: 17 Mar 2010 04:46
FoR Codes: 07 AGRICULTURAL AND VETERINARY SCIENCES > 0704 Fisheries Sciences > 070401 Aquaculture @ 100%
SEO Codes: 83 ANIMAL PRODUCTION AND ANIMAL PRIMARY PRODUCTS > 8301 Fisheries - Aquaculture > 830199 Fisheries - Aquaculture not elsewhere classified @ 100%
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