Semicontinuous cultures of Four microalgae with a nonconventional medium

Voltolina, D; Elías, José Antonio López

doi:10.7773/cm.v19i2.930

Cited by 14 publications

(5 citation statements)

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“…Some microalgae used as diets for bivalve mollusks (e.g., Chaetoceros sp., Pavlova lutheri , and Phaeodactylum tricornutum ) contain 29– 52% of protein, 10–29% of lipids, and 8–18% of carbohydrates (López‐Elías and Voltolina 1993). But in this study the oysters were mainly fed with feces of tilapia.…”

Section: Discussionmentioning

confidence: 99%

Pacific Oyster, Crassostrea gigas, Cultured With Tilapia, Oreochromis mossambicus×Oreochromis niloticus in a Recirculation System

Miranda

Lizarraga-Armenta

Rivas-Vega

et al. 2010

Journal of the World Aquaculture Society

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The objective of this study was to evaluate the particulate matter uptake, survival, condition index (CI), and proximate composition of Crassostrea gigas, cocultured in seawater with tilapia. We used three densities of oysters (two, four, and eight) and one control (no oysters) per 150 g of tilapia biomass. Water quality parameters were measured daily, whereas NH 4 -N, NO 2 -N, NO 3 -N, PO 4 , total Kjeldahl nitrogen (TKN), chlorophyll a (Chl a), total suspended solids (TSS) proximate composition and CI of C. gigas were determined at the beginning and at the end of the study. No significant differences in nutrient content were observed between treatments. Significant differences were observed in TKN, Chl a, and TSS between the control and the oyster tanks. Maximum removal percentages were 43.16 for TKN (two oyster treatment), 80.23 for Chl a, and 73.55 for TSS (both in eight oyster treatment). Survival of C. gigas was 100% in all treatments. Significantly higher growth was only observed in two oyster treatment. Protein and carbohydrate content in the oyster tissues diminished in all treatments, whereas lipid increased in treatments with two and four oysters. These results indicate that TSS produced from tilapia can be used as a source of food for C. gigas.

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Section: Discussionmentioning

confidence: 99%

Pacific Oyster, Crassostrea gigas, Cultured With Tilapia, Oreochromis mossambicus×Oreochromis niloticus in a Recirculation System

Miranda

Lizarraga-Armenta

Rivas-Vega

et al. 2010

Journal of the World Aquaculture Society

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“…The chemical proximate composition of the bioflocs was analyzed to determine protein and lipid contents. The protein content was measured following the methodology described by Lowry et al [ 25 ] with modifications [ 26 ]; the carbohydrate concentration was estimated by the “phenol-sulfuric acid” method [ 27 ]. Total lipids were extracted according to Bligh and Dyer [ 28 ], and the quantification was done following the methodology described by Pande et al [ 29 ].…”

Section: Methodsmentioning

confidence: 99%

Production Response and Digestive Enzymatic Activity of the Pacific White ShrimpLitopenaeus vannamei(Boone, 1931) Intensively Pregrown in Microbial Heterotrophic and Autotrophic-Based Systems

Becerra-Dórame

Martínez‐Porchas

Martínez‐Córdova

et al. 2012

The Scientific World Journal

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Shrimp postlarvae were reared into different microcosm systems without water exchange; a traditional system based on simple fertilization to improve microalgae concentration (control), an autotrophic system (AS) based on the promotion of biofloc and biofilm by the addition of fertilizer and artificial substrates and a heterotrophic system (HS) based on the promotion of heterotrophic bacteria by the addition of nitrogenous and carbonaceous sources and artificial substrates. Better growth performance and survival were registered in shrimp from the AS and HS compared to the control. Feed conversion ratios were below 0.7 for all treatments, but AS and HS were significantly lower than the control. Regarding digestive performance, no significant differences were observed for trypsin, amylase and lipase activities among AS and control shrimp; however, shrimp from HS showed a higher trypsin and amylase activities, suggesting a higher digestive activity caused by the presence of microbial bioflocs. The presence of biofilm and bioflocs composed by either autotrophic or heterotrophic organisms in combination with formulated feed improved the growth performance and survival of shrimp. Apparently, such combination fits the nutritional requirements of shrimp.

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“…Total lipid content was determined colorimetrically according to Pande et al (1963). After being extracted, the method of Bligh & Dyer (1959) modified by López-Elías et al (1993) was used. Total protein content was determined colorimetrically according to the method of Lowry et al (1951) modified by Malara & Charra (1972) and following the recommendation for its extraction by Clayton et al (1988) and López-Elías (1993).…”

mentioning

confidence: 99%

“…After being extracted, the method of Bligh & Dyer (1959) modified by López-Elías et al (1993) was used. Total protein content was determined colorimetrically according to the method of Lowry et al (1951) modified by Malara & Charra (1972) and following the recommendation for its extraction by Clayton et al (1988) and López-Elías (1993). Quantification of total lipid and protein content were performed with a spectrophotometer (Cary 100 BIO UV-Visible Spectrophotometer).…”

mentioning

confidence: 99%

Effect of different phosphorus concentrations on growth and biochemical composition of Chaetoceros muelleri

Lovio-Fragoso¹,

Hayano-Kanashiro²,

López‐Elías³

2019

LAJAR

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Chaetoceros muelleri is one of the most widely used microalgae species in aquaculture in northwestern Mexico as food for fish and crustaceans. Its importance is due to its fast growth, nutritional quality and lipid accumulation under nutrient-limiting conditions. However, the biochemical and molecular mechanisms of uptake of phosphorus (P) limiting conditions for this species is still unknown. This study aimed to analyze the growth and biochemical composition of C muelleri in response to different phosphorus concentrations. Four treatments under different phosphorus conditions were used: control (72 µM P), excess (144 µM P) and two treatments with phosphorus limitation, limited A (18 µM P) and limited B (7 µM P). The highest cell concentration was observed in control and excess of P (>3.4×10 6 cells mL -1 ). The highest dry mass concentration and chlorophyll-a content were found in control medium (72 µM P) whereas the highest total lipid (4.42%) was found in the lowest P-concentration medium (7 µM P). No significant differences were found in the total protein content, but we did find differences between the treatments with phosphorus limitation (7 and 18 µM P).

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Semicontinuous cultures of Four microalgae with a nonconventional medium

Cited by 14 publications

References 0 publications

Pacific Oyster, Crassostrea gigas, Cultured With Tilapia, Oreochromis mossambicus×Oreochromis niloticus in a Recirculation System

Pacific Oyster, Crassostrea gigas, Cultured With Tilapia, Oreochromis mossambicus×Oreochromis niloticus in a Recirculation System

Production Response and Digestive Enzymatic Activity of the Pacific White ShrimpLitopenaeus vannamei(Boone, 1931) Intensively Pregrown in Microbial Heterotrophic and Autotrophic-Based Systems

Effect of different phosphorus concentrations on growth and biochemical composition of Chaetoceros muelleri

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