Fenologia, aspectos ecofisiológicos e seleção de linhagens em cultivos no mar de Gracilaria birdiae (Rhodophyta, Gracilariales) no Estado do Rio Grande do Norte, Brasil

Carneiro, Marcella Araújo do Amaral

doi:10.11606/t.41.2011.tde-19042012-120611

Cited by 2 publications

(3 citation statements)

References 152 publications

(108 reference statements)

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“…In biofloc systems, elevated concentrations of nitrate and phosphate are common in long-term production due to low water exchange rates and high animal densities, providing an advantageous environment for macroalgae development. Carneiro [42] noted that when macroalgae inhabit eutrophicated environments, they tend to absorb significant nutrient concentrations initially for storage, serving as a precautionary measure in case of sudden nutrient depletion. Additionally, Hanisak et al [43] suggested that a constant high nitrogen availability in the environment does not necessarily result in increased removal, as macroalgae nitrogen absorption capacity saturates quickly at high concentrations.…”

Section: Discussionmentioning

confidence: 99%

Effect of Organic or Inorganic Fertilization on Microbial Flocs Production in Integrated Cultivation of Ulva lactuca with Oreochromis niloticus and Penaeus vannamei

Carvalho,

Brandão,

Zemor

et al. 2024

Fishes

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Different fertilization regimes in biofloc systems influence the predominance of distinct bacterial populations, impacting water quality and organism performance. This study evaluates the growth and nutrient absorption of the macroalgae Ulva lactuca when cultivated in an integrated system with Penaeus vannamei and Oreochromis niloticus in chemoautotrophic and heterotrophic systems. The experiment lasted 45 days and comprised two treatments, each with three replicates: chemoautotrophic—utilizing chemical fertilizers; heterotrophic—employing inoculum from mature biofloc shrimp cultivation, supplemented with organic fertilizers. Each treatment consisted of three systems, each containing a 4 m3 tank for shrimp, 0.7 m3 for tilapia, and 0.35 m3 for macroalgae, with continuous water circulation between tanks and constant aeration. Water quality analyses were carried out during the experiment, as were the performances of the macroalgae and animals. The data were subjected to a statistical analysis. Results revealed an increase in macroalgae biomass and the removal of nitrate (57%) and phosphate (47%) during cultivation, with a higher specific growth rate observed in the chemoautotrophic treatment. Nonetheless, the heterotrophic treatment exhibited higher levels of protein in the macroalgae (18% dry matter) and phosphate removal rates (56%), along with superior maintenance of water quality parameters. Tilapia performance varied across treatments, with a higher final weight and weight gain recorded in the heterotrophic treatment. The recycling of water from an ongoing biofloc cultivation with organic fertilization demonstrated viability for macroalgae cultivation within an integrated system involving shrimp and fish.

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Section: Discussionmentioning

confidence: 99%

Effect of Organic or Inorganic Fertilization on Microbial Flocs Production in Integrated Cultivation of Ulva lactuca with Oreochromis niloticus and Penaeus vannamei

Carvalho,

Brandão,

Zemor

et al. 2024

Fishes

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“…The biomass was sold for the production of colloids, which resulted in a decrease of these reserves along the coast. Sea cultivation attempts were made, but they achieved little success due to the lack of basic knowledge about the species selected for cultivation (Carneiro 2011). Currently, with incentives to sea aquaculture, some…”

Section: Economic Importancementioning

confidence: 99%

“…species have been used in pilot experiments in the Northeast coast and better results are being obtained(Bezerra & Marinho-Soriano 2010, Carneiro 2011. Therefore, the interest in studies with Brazilian species for industrial-scale production has increased(Marinho-Soriano et al, 2007;Carneiro 2011).…”

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confidence: 99%

Phylogenomic study and organellar genomic characterization of gracilarioids seaweeds (Gracilariaceae, Rhodophyta)

Iha¹

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AgradecimentosEm primeiro lugar, quero agradecer ao CNPq (Conselho Nacional de Desenvolvimento Científico e Tecnológico) pela bolsa regular ao longo dos quatro anos do curso de doutorado (N° 152939/2014-8), à CAPES (Coordenação de Aperfeiçoamento de Pessoal de Nível Superior) pela bolsa concedida para realizar o estágio-sanduiche na University of Melbourne, Austrália (N° 88881.134422/2016-01) e por outros auxílios vindos do Programa PROEX e, por fim, a FAPESP (Fundação de Amparo à Pesquisa do Estado de São Paulo), que também auxiliou neste projeto. Quero dar um agradecimento especial à minha orientadora Profª. Drª. Mariana C. de Oliveira por me auxiliar por todos esses anos (que também contam o tempo de iniciação científica e mestrado)por todo ensinamento, orientação, apoio, muita paciência e por ter acreditado em mim desde o começo. Me sinto muito sortuda por ter sido sua aluna e levarei comigo não apenas os ensinamentos acadêmicos e científicos, mas o também exemplo de uma ótima professora, orientadora, cientista, administradora e, mais do que tudo, uma ótima pessoa.

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Fenologia, aspectos ecofisiológicos e seleção de linhagens em cultivos no mar de Gracilaria birdiae (Rhodophyta, Gracilariales) no Estado do Rio Grande do Norte, Brasil

Cited by 2 publications

References 152 publications

Effect of Organic or Inorganic Fertilization on Microbial Flocs Production in Integrated Cultivation of Ulva lactuca with Oreochromis niloticus and Penaeus vannamei

Effect of Organic or Inorganic Fertilization on Microbial Flocs Production in Integrated Cultivation of Ulva lactuca with Oreochromis niloticus and Penaeus vannamei

Phylogenomic study and organellar genomic characterization of gracilarioids seaweeds (Gracilariaceae, Rhodophyta)

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