Plotieau, Thomas, Baele, Jean-Marc, Vaucher, Romain, Hasler, Claude-Alain, Koudad, Dunia, and Eeckhaut, Igor (2013) Analysis of the impact of Holothuria scabra intensive farming on sediment. Cahier de Biologie Marine, 54. pp. 703-711.

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Abstract

We analysed the impact of intensive Holothuria scabra farming by comparing various parameters of the sea cucumber food (i.e. the upper layer of the sediment) inside and outside the pens of two farms in the south-west of Madagascar. Our analyses showed that : (i) the proportion of the finest grain size fraction (< 250 μm) decreased from 5 to 14%, (ii) the global carbonate proportion decreased by 5%, (iii) aragonite was the carbonate type most affected by holothurians, followed by calcite and magnesian calcite, (iv) the total organic matter did not vary significantly, (v) the number of bacteria decreased by up to 50%, and (vi) the concentration of photosynthetic microorganisms fell by up to 22%, within sea farm pens. Based on these results we suggest that fallow practice should be considered in the future for holothuri- culture.

Item ID:	84545
Item Type:	Article (Research - C1)
ISSN:	2262-3094
Keywords:	holothuria scabra; bacteria; organic matter; sea cucumber; sediment; aquaculture
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Date Deposited:	30 Jan 2025 01:45
FoR Codes:	31 BIOLOGICAL SCIENCES > 3109 Zoology > 310999 Zoology not elsewhere classified @ 80% 37 EARTH SCIENCES > 3705 Geology > 370509 Sedimentology @ 20%
SEO Codes:	10 ANIMAL PRODUCTION AND ANIMAL PRIMARY PRODUCTS > 1002 Fisheries - aquaculture > 100299 Fisheries - aquaculture not elsewhere classified @ 100%
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