Utilization of Gracilaria chilensis (Rhodophyta: Gracilariaceae) as a Biofilter in the Depuration of Effluents from Tank Cultures of Fish, Oysters, and Sea Urchins

Chow, Fungyi; Macchiavello, Juan; Cruz, Sergio Santa; Fonck, Erika; Olivares, Jorge

doi:10.1111/j.1749-7345.2001.tb00374.x

Cited by 16 publications

(15 citation statements)

References 9 publications

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“…Gracilaria chilensis culture was highly efficient at a biofilter for the soluble nutrients but had little effect on particulate emission. The best growth of G. chilensis occurred in the ammonium-rich effluent from fish culture (Chow et al 2001). In addition, results indicated the possibility of extending this aquaculture system with few modifications to large-scale grow-out operations for this species.…”

Section: Discussionmentioning

confidence: 99%

“…In addition to improving water quality, seaweeds can provide an additional source of income as a valuable by-product in the process. The special interest is the use of seaweeds in recycling some dissolved nutrients, in particular nitrogen in the form of ammonia (Buschmann 1996;Neori et al 1996;Chow et al 2001;Hernandez et al 2002;Martinez-Aragon et al 2002;Msuya et al 2006;Kovitvadhi et al 2008). We developed a simple recirculating system for the production of juvenile spotted babylons that are available for commercial use.…”

Section: Introductionmentioning

confidence: 99%

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Performance of the seaweeds Gracilaria salicornia and Caulerpa lentillifera as biofilters in a hatchery scale recirculating aquaculture system for juvenile spotted babylons (Babylonia areolata)

2011

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This study was conducted to determine the feasibility of using seaweeds as biofilters in a hatchery scale recirculating aquaculture system for juvenile spotted babylons (Babylonia areolata). Two seaweeds Gracilaria salicornia and Caulerpa lentillifera were used with three initial biomass levels of each species (280, 560 and 840 g wet weight m -3 ). Spotted babylon with an average initial shell length of 1.32 ± 0.01 cm and body weight of 0.37 ± 0.01 g was used with a stocking density of 300 snails m -2 . The experiment was carried out in triplicate over a period of 120 days. Results showed that seawater quality (water temperature, conductivity, salinity, pH, dissolved oxygen and total suspended solids) gradually changed with no significant differences between treatments throughout the experimental period, except alkalinity, total ammonia nitrogen, nitritenitrogen, nitrate-nitrogen and phosphate. Growth rates in weight and shell length of the spotted babylon cultured in all seaweed treatments used were not significantly different between seaweeds and density treatments, but significant differences in final survival rate of the spotted babylon were found between seaweed and density treatments. Growth rate and biomass gain of C. lentillifera were significantly higher than those of G. salicornia for all stocking density treatments. This study shows that Gracilaria salicornia and Caulerpa lentillifera can be used as biofilters for regulating water quality in a recirculating culture system for spotted babylons.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Performance of the seaweeds Gracilaria salicornia and Caulerpa lentillifera as biofilters in a hatchery scale recirculating aquaculture system for juvenile spotted babylons (Babylonia areolata)

2011

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“…Seaweeds can significantly absorb waste nutrients, control eutrophication and, consequently, improve the health and stability of marine ecosystems, and promote a sustainable development of aquaculture Chopin et al 2001;Troell et al 2003;Fei 2004;Neori et al 2004;Yang et al 2005;Mao et al 2005). The physiological responses and the biofiltering ecological functions of seaweeds has been studied in different culture systems, e.g., in filter-feeding bivalve culture systems (Fang et al 1996a), in fish cage farms (Troell et al 1997;Zhou et al 2006;Hayashi et al 2008), in shrimp culture ponds (Jones et al 2001;Nelson et al 2001;Xu et al 2007), and in IMTA systems containing finfish, shellfish, and seaweed (Shpigel and Neori 1996;Neori et al 2000;Chow et al 2001;Shen et al 2007).…”

Section: Introductionmentioning

confidence: 99%

Potential of the seaweed Gracilaria lemaneiformis for integrated multi-trophic aquaculture with scallop Chlamys farreri in North China

et al. 2009

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In this study the red alga, Gracilaria lemaneiformis, was cultivated with the scallop Chlamys farreri in an integrated multi-trophic aquaculture (IMTA) system for 3 weeks at the Marine Aquaculture Laboratory of the Institute of Oceanology, Chinese Academy of Sciences (IOCAS) in Qingdao, Shandong Province, North China. The nutrient uptake rate and nutrient reduction efficiency of ammonium and phosphorus from scallop excretion were determined. The experiment included four treatments each with three replicates, and three scallop monoculture systems served as the control. Scallop density (407.9±2.84 g m −3 ) remained the same in all treatments while seaweed density differed. The seaweed density was set at four levels (treatments 1, 2, 3, 4) with thallus wet weight of 69.3± 3.21, 139.1±3.80, 263.5±6.83, and 347.6±6.30 g m −3 , respectively. There were no significant differences in the initial nitrogen and phosphorus concentration between each treatment and the control group (ANOVA, p>0.05). The results showed that at the end of the experiment, the nitrogen concentration in the control group and treatment 1 was significantly higher than in the other treatments. There was also a significant difference in phosphorus concentration between the control group and the IMTA treatments (ANOVA, p<0.05). Growth rate, C and N content of the thallus, and mortality of scallop was different between the IMTA treatments. The nutrient uptake rate and nutrient reduction efficiency of ammonium and phosphorus changed with different cultivation density and time. The maximum reduction efficiency of ammonium and phosphorus was 83.7% and 70.4%, respectively. The maximum uptake rate of ammonium and phosphorus was 6.3 and 3.3 µmol g −1 DW h −1 . A bivalve/seaweed biomass ratio from 1:0.33 to 1:0.80 (treatments 2, 3, and 4) was preferable for efficient nutrient uptake and for maintaining lower nutrient levels. Results indicate that G. lemaneiformis can efficiently absorb the ammonium and phosphorus from scallop excretion and is a suitable candidate for IMTA.

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“…In Chile, the red seaweed Gracilaria chilensis, (Gracilariales, Rhodophyta; Bird et al 1986), has been shown to be suitable for integration with salmon in both land-based tanks and in suspended cages 1996b;Troell et al 1997;Chow et al 2001). Gracilaria growth in such systems more than doubled compared to monoculture due to fertilization effects .…”

Section: Introductionmentioning

confidence: 99%

Comparison of Spore Inoculated and Vegetative Propagated Cultivation Methods of Gracilaria chilensis in an Integrated Seaweed and Fish Cage Culture

et al. 2005

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In Chile the integration of Gracilaria chilensis with salmon culture has shown high potential. Seaweed integrated aquaculture is of great interest as it allows waste recycling within fed cage aquaculture. The development of economically feasible suspended methods of seaweed cultivation is therefore of high importance. Hence, production and performance of two suspended Gracilaria cultivation methods, spore inoculated ropes and ropes with twined field collected seaweed, were studied in open water. The production from spore-seeded ropes was comparable to that of twined ropes for the first month of culture. Thereafter, the twined ropes had a significantly higher productivity. Fish farm wastes had no significant fertilizing effect upon Gracilaria growth rate. In addition, spore-originated thalli and field collected thalli were compared under laboratory conditions and in suspended culture using the same cultivation method. Spore-originated thalli had a 50% lower growth rate than the field collected thalli under laboratory conditions; however, no significant differences were detected in the field. Also, the occurrence of spore coalescence growth enhancement was not significant on the spore-seeded ropes. It was concluded that spore-originated cultivation techniques could be of interest for an integrated open seawater aquaculture system due to the high levels of Gracilaria polymorphism. This would result in greater adaptability to environmental variations, and a continuous supply of restocking material.

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Utilization of Gracilaria chilensis (Rhodophyta: Gracilariaceae) as a Biofilter in the Depuration of Effluents from Tank Cultures of Fish, Oysters, and Sea Urchins

Cited by 16 publications

References 9 publications

Performance of the seaweeds Gracilaria salicornia and Caulerpa lentillifera as biofilters in a hatchery scale recirculating aquaculture system for juvenile spotted babylons (Babylonia areolata)

Performance of the seaweeds Gracilaria salicornia and Caulerpa lentillifera as biofilters in a hatchery scale recirculating aquaculture system for juvenile spotted babylons (Babylonia areolata)

Potential of the seaweed Gracilaria lemaneiformis for integrated multi-trophic aquaculture with scallop Chlamys farreri in North China

Comparison of Spore Inoculated and Vegetative Propagated Cultivation Methods of Gracilaria chilensis in an Integrated Seaweed and Fish Cage Culture

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