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Studies on the bioremediation capacity of the adult black clam, Chione fluctifraga, of shrimp culture effluents Translated title: Estudios de la capacidad de biorremediación de efluentes de camarón de la almeja negra adulta, Chione fluctifraga

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      Abstract

      The black clam, Chione fluctifraga, can be used to bioremediate discharge effluents produced by shrimp aquaculture. With such purpose we evaluated during 77 days, the effect of two densities of clams (12.5 and 25·specimens m-2) and a control (0·m-2) on the water quality of raw effluents from a semi-intensive culture of shrimp (Litopenaeus vannamei; 25 m-2). Parameters such as total suspended solids (TSS), organic suspended solids (OSS), total ammonium nitrogen (TAN) and total nitrogen (TN) were measured in raw effluents, control, treatments and estuary (water source for shrimp culture). The TSS and OSS diminished in control and treatments, compared with untreated effluents. The TSS and OSS decreased over time with no significant difference observed among the treatments during the first 22 days of trial. However, treatments had a greater decrease of TSS and OSS levels at days 48 and 77 compared with the control. TAN recorded the lowest levels in both treatments, followed by control and effluents respectively; no significant differences were observed for TN. The results indicate that Chione fluctifraga has ability as biorremediator and it does survive well in shrimp pond effluents.

      Translated abstract

      La almeja negra, Chione fluctifraga, puede ser utilizada para biorremediar efluentes de descarga en cultivos de camarón. Con este propósito se evaluó durante 77 días, el efecto de dos densidades de almeja (12,5 y 25 especímenes m-2) y un control (0 m-2) sobre la calidad de agua de efluentes crudos de un cultivo semi-intensivo de camarón (Litopenaeus vannamei; 25 m-2). Parámetros tales como, sólidos suspendidos totales (TSS), sólidos orgánicos suspendidos (OSS), nitrógeno amoniacal total (TAN) y nitrógeno total (TN) fueron medidos en los efluentes crudos, control, tratamientos y agua del estuario (fuente de agua para el cultivo de camarón). Los TSS y OSS disminuyeron en el control y los tratamientos en comparación con los efluentes sin tratar. Los TSS y OSS disminuyeron durante los primeros 22 días, sin registrar diferencias entre control y tratamientos. Sin embargo, los tratamientos tuvieron una mayor disminución en los niveles de TSS y OSS a los 48 y 77 días de cultivo, en comparación con el control. Los niveles de TAN registraron los valores más bajos en ambos tratamientos, seguidos por el control y los efluentes de camarón; no se observaron diferencias significativas para el TN. Los resultados indican que Chione fluctifraga tiene capacidad como biorremediador y puede sobrevivir en efluentes de estanques de camarón.

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      Most cited references 43

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            Author and article information

            Affiliations
            [1 ] Universidad de Sonora Mexico
            [2 ] Centro de Investigación en Alimentación Y Desarrollo Mexico
            [3 ] Universidad Autónoma de Nayarit Mexico
            [4 ] CESUES Mexico
            Contributors
            Role: ND
            Role: ND
            Role: ND
            Role: ND
            Role: ND
            Journal
            revbiolmar
            Revista de biología marina y oceanografía
            Rev. biol. mar. oceanogr.
            Universidad de Valparaíso. Facultad de Ciencias del Mar (Valparaíso )
            0718-1957
            April 2011
            : 46
            : 1
            : 105-113
            S0718-19572011000100009
            10.4067/S0718-19572011000100009

            http://creativecommons.org/licenses/by/4.0/

            Product
            Product Information: SciELO Chile
            Categories
            MARINE & FRESHWATER BIOLOGY
            OCEANOGRAPHY

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