Simulating the temporal pattern of waste production in farmed gilthead seabream ( Sparus aurata), European seabass ( Dicentrarchus labrax) and Atlantic bluefin tuna ( Thunnus thynnus)

Most fish farming waste output models provide gross waste rates as a function of stocked or produced biomass for a year or total culture cycle, but without contemplating the temporality of the discharges. This work aims to ascertain the temporal pattern of waste loads by coupling available growth an...

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Bibliographic Details
Published in:Ecological modelling 2010-02, Vol.221 (4), p.634-640
Main Authors: Piedecausa, M.A., Aguado-Giménez, F., Cerezo-Valverde, J., Hernández-Llorente, M.D., García-García, B.
Format: Article
Language:English
Subjects:
Animal aquaculture
Animal productions
Animal, plant and microbial ecology
Aquaculture
Biological and medical sciences
Biomass
Computer simulation
Dicentrarchus labrax
Dissolution
Ecology
Fundamental and applied biological sciences. Psychology
General aspects
General aspects. Techniques
Growth model
Marine
Methods and techniques (sampling, tagging, trapping, modelling...)
Nutrients
Sparus aurata
Temporal logic
Temporal pattern
Thunnus thynnus
Tunas
Waste output
Wastes
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Summary:Most fish farming waste output models provide gross waste rates as a function of stocked or produced biomass for a year or total culture cycle, but without contemplating the temporality of the discharges. This work aims to ascertain the temporal pattern of waste loads by coupling available growth and waste production models and developing simulation under real production rearing conditions, considering the overlapping of batches and management of stocks for three widely cultured species in the Mediterranean Sea: gilthead seabream ( Sparus aurata), European seabass ( Dicentrarchus labrax) and Atlantic bluefin tuna ( Thunnus thynnus). For a similar annual biomass production, the simulations showed that waste output and temporal dumping patterns differ between the three species as a result of the disparities in growth velocity, nutrient digestibility, maintenance metabolic budget and husbandry. The simulations allowed the temporal patterns including the periods of maximum discharge and the dissolved and particulate nitrogen and phosphorus content in the wastes released to be determined, both of which were seen to be species-specific.
ISSN:0304-3800
1872-7026
DOI:10.1016/j.ecolmodel.2009.11.011