Harvesting amphipods applying the integrated multitrophic aquaculture (IMTA) concept in off-shore areas

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Title: Harvesting amphipods applying the integrated multitrophic aquaculture (IMTA) concept in off-shore areas
Authors: Fernandez-Gonzalez, Victoria | Toledo-Guedes, Kilian | Valero-Rodriguez, Juan Manuel | Agraso, María del Mar | Sanchez-Jerez, Pablo
Research Group/s: Biología Marina
Center, Department or Service: Universidad de Alicante. Departamento de Ciencias del Mar y Biología Aplicada
Keywords: Off-coast farms | Fouling | Crustaceans | Nutritional analysis | Amino acids | Fatty acids | Trace elements
Knowledge Area: Zoología
Issue Date: 20-Mar-2018
Publisher: Elsevier
Citation: Aquaculture. 2018, 489: 62-69. doi:10.1016/j.aquaculture.2018.02.008
Abstract: Current trends in aquaculture research are towards more sustainable aquaculture, implementing more environment-friendly models such as integrated multi-trophic aquaculture (IMTA) systems. One possible IMTA strategy involves taking advantage of the species that naturally grow on aquaculture facility structures. Since amphipods have been cultured on a small and medium scale in laboratory conditions with the aim of using them as natural food for farmed fish or live prey for cephalopods, the high density of them in farm fouling could be pointing to a potential accessory culture, bringing new possibilities for commercial production and diversification of cultivable species. Two IMTA experiments focusing on harvesting amphipods were carried out between May and September 2014, testing two collector types, two depths, at 5 m and 15 m, and two experimental times. Extraction method selected to detach and recover the amphipods recovered more than 80% of the fauna gathered by the collectors, obtaining a final product with more than 86% purity in amphipods. Monthly production was estimated in 10 g wet-weight per collector (5 l volume) and it did not vary with the depth, indicating it is possible to use the entire water column occupied by the cages (down to 20 m depth) for this culture. This is the first pilot trial of an amphipod culture within an offshore IMTA facility. Nutrient uptake from wastes of the main culture was established, promoting a more sustainable development of aquaculture in the marine environment. Moreover, nutritional composition of the amphipod-based product is of great utility as a suitable natural ingredient in aquafeed compositions, and also as a potential food supplement for human nutrition.
Sponsor: This experiment was carried out as part of the project “Desarrollo de sistemas acuícolas multitróficos integrados asistidos por tecnología submarina avanzada (SUMERGI+DOS)”, financed by FEDER-INNTERCONECTA program (CDTI + Junta de Andalucía).
URI: http://hdl.handle.net/10045/73991
ISSN: 0044-8486 (Print) | 1873-5622 (Online)
DOI: 10.1016/j.aquaculture.2018.02.008
Language: eng
Type: info:eu-repo/semantics/article
Rights: © 2018 Elsevier B.V.
Peer Review: si
Publisher version: http://dx.doi.org/10.1016/j.aquaculture.2018.02.008
Appears in Collections:INV - BM - Artículos Científicos / Scientific Papers

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