Production of a diatom-bacteria biofilm in a photobioreactor for aquaculture applications

Ruben E. Avendaño-Herrera, Carlos E. Riquelme

Resultado de la investigación: Article

31 Citas (Scopus)

Resumen

Navicula veneta biofilm improves the settling of marine larval shellfish. We attempted to optimise the production of N. veneta biofilm by the addition of native bacteria. As a first step, the ability of six bacteria to grow in extracellular products of N. veneta was evaluated, the best growing strain was NC1 (Halomonas sp.). Subsequently, three culture cycles in the Tanaka photobioreactor confirmed that the diatom gave highest production values when cultured with this bacterium, with cell densities of 1.3-2.4 × 106 cells ml-1; without NC1 the cell production was about 65% less. Comparing microalgal growth, chlorophyll a concentration, and bacterial load showed a positive statistical correlation, verifying that these three variables increased simultaneously. The results suggested the feasibility of using the NC1 strain as a promoter of growth of N. veneta and the potential use of the Tanaka photobioreactor for the mass production of mixed biofilms consisting of diatoms and bacteria, which could be use in settlement of mass cultures of marine invertebrates of commercial importance and/or improving of food in aquaculture.

Idioma originalEnglish
Páginas (desde-hasta)97-104
Número de páginas8
PublicaciónAquacultural Engineering
Volumen36
N.º2
DOI
EstadoPublished - 1 mar 2007

Huella dactilar

Bacillariophyceae
biofilm
aquaculture
diatom
bacterium
bacteria
Halomonas
Navicula
cells
shellfish
chlorophyll a
invertebrate
invertebrates
promoter regions
chlorophyll
food

ASJC Scopus subject areas

  • Aquatic Science

Citar esto

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abstract = "Navicula veneta biofilm improves the settling of marine larval shellfish. We attempted to optimise the production of N. veneta biofilm by the addition of native bacteria. As a first step, the ability of six bacteria to grow in extracellular products of N. veneta was evaluated, the best growing strain was NC1 (Halomonas sp.). Subsequently, three culture cycles in the Tanaka photobioreactor confirmed that the diatom gave highest production values when cultured with this bacterium, with cell densities of 1.3-2.4 × 106 cells ml-1; without NC1 the cell production was about 65{\%} less. Comparing microalgal growth, chlorophyll a concentration, and bacterial load showed a positive statistical correlation, verifying that these three variables increased simultaneously. The results suggested the feasibility of using the NC1 strain as a promoter of growth of N. veneta and the potential use of the Tanaka photobioreactor for the mass production of mixed biofilms consisting of diatoms and bacteria, which could be use in settlement of mass cultures of marine invertebrates of commercial importance and/or improving of food in aquaculture.",
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Production of a diatom-bacteria biofilm in a photobioreactor for aquaculture applications. / Avendaño-Herrera, Ruben E.; Riquelme, Carlos E.

En: Aquacultural Engineering, Vol. 36, N.º 2, 01.03.2007, p. 97-104.

Resultado de la investigación: Article

TY - JOUR

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AU - Avendaño-Herrera, Ruben E.

AU - Riquelme, Carlos E.

PY - 2007/3/1

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N2 - Navicula veneta biofilm improves the settling of marine larval shellfish. We attempted to optimise the production of N. veneta biofilm by the addition of native bacteria. As a first step, the ability of six bacteria to grow in extracellular products of N. veneta was evaluated, the best growing strain was NC1 (Halomonas sp.). Subsequently, three culture cycles in the Tanaka photobioreactor confirmed that the diatom gave highest production values when cultured with this bacterium, with cell densities of 1.3-2.4 × 106 cells ml-1; without NC1 the cell production was about 65% less. Comparing microalgal growth, chlorophyll a concentration, and bacterial load showed a positive statistical correlation, verifying that these three variables increased simultaneously. The results suggested the feasibility of using the NC1 strain as a promoter of growth of N. veneta and the potential use of the Tanaka photobioreactor for the mass production of mixed biofilms consisting of diatoms and bacteria, which could be use in settlement of mass cultures of marine invertebrates of commercial importance and/or improving of food in aquaculture.

AB - Navicula veneta biofilm improves the settling of marine larval shellfish. We attempted to optimise the production of N. veneta biofilm by the addition of native bacteria. As a first step, the ability of six bacteria to grow in extracellular products of N. veneta was evaluated, the best growing strain was NC1 (Halomonas sp.). Subsequently, three culture cycles in the Tanaka photobioreactor confirmed that the diatom gave highest production values when cultured with this bacterium, with cell densities of 1.3-2.4 × 106 cells ml-1; without NC1 the cell production was about 65% less. Comparing microalgal growth, chlorophyll a concentration, and bacterial load showed a positive statistical correlation, verifying that these three variables increased simultaneously. The results suggested the feasibility of using the NC1 strain as a promoter of growth of N. veneta and the potential use of the Tanaka photobioreactor for the mass production of mixed biofilms consisting of diatoms and bacteria, which could be use in settlement of mass cultures of marine invertebrates of commercial importance and/or improving of food in aquaculture.

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KW - Biofilms

KW - Diatom-bacteria

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