Influence of depth on the growth of the seaweed &lt;i&gt;Gracilaria birdiae&lt;/i&gt; (Rhodophyta) in a shrimp pond

Oliveira, Vinícius Peruzzi de; Freire, Fúlvio Aurélio de Morais; Soriano, Eliane Marinho

doi:10.14210/bjast.v16n1.p33-39

Cited by 20 publications

(9 citation statements)

References 17 publications

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“…The high growth values achieved by the three strains in the first weeks of the experiment are in agreement with previous results with other Gracilaria species (Nelson et al 2001;Yang et al 2006;Samocha et al 2015). The mean RGR of the three strains of G. domingensis obtained for the whole period (2-4% day -1 ) was higher than those found in other Gracilaria species tested in shrimp ponds in Brazil (Marinho-Soriano et al 2002, 2009Oliveira et al 2012). This high growth obtained for the morphotypes of G. domingensis may be explained by differences of water quality Fig.…”

Section: Discussionsupporting

confidence: 91%

Cultivation of three color strains of Gracilaria domingensis in an integrated organic system

et al. 2017

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Species of the genus Gracilaria are widely distributed around the world, and many are wild harvested and cultivated for phycocolloid production (agar) and human food. This study investigated the growth performance of three color strains of Gracilaria domingensis in an integrated organic system. The three chromatic variants (red, green, and brown) were cultured in a shrimp farm at two depths (surface and 20 cm). The highest relative growth rates were obtained in the first week of cultivation for all three strains studied. Although the growth rates and biomass were slightly higher at a depth of 20 cm, significant differences were not observed at different depths (p \ 0.05). The growth of the three strains varied significantly over time (p \ 0.001). The maximal growth values obtained were 11.25 ± 1.50% day -1 (red), 12.76 ± 3.96% day -1 (green), and 7.86 ± 1.75% day -1 (brown). The mean growth rates for the whole period were 4.63 ± 6.97, 3.38 ± 9.09, and 2.16 ± 6.61% day -1 for the red, green, and brown strains, respectively. The pigment content (chlorophyll a, phycocyanin, and phycoerythrin) of the three strains studied was higher at a depth of 20 cm, while the maximum electron transport rate (ETR max ) and photosynthetic efficiency were higher at the surface. The high growth rates obtained in this study demonstrate the great potential of this species for integrated organic farming. Moreover, the ecological success shown by the red strain suggests that this strain is the most suitable for integrated cultivation.

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Section: Discussionsupporting

confidence: 91%

Cultivation of three color strains of Gracilaria domingensis in an integrated organic system

et al. 2017

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“…in animal effluent and in domestic effluents and found that they efficiently removed nutrients (NEORI et al, 2003;YOKOYAMA and ISHIHI, 2010;OLIVEIRA et al,. 2012;SODE et al, 2013;BALOO et al, 2014).…”

Section: Discussionmentioning

confidence: 99%

Biofiltering efficiency and productive performance of macroalgae with potential for integrated multi-trophic Aquaculture (IMTA)

Castelar¹,

Pontes²,

Costa³

et al. 2015

Bol. Inst. Pesca

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Seaweeds have many uses in industry and agriculture and many species have potential for integrated multi-trophic aquaculture (IMTA), since they are efficient in removing nutrients from water. The efficiency of Ulva flexuosa, U. fasciata and Gracilaria birdiae in removing nutrients from enriched water and their productive performance in outdoor tanks were quantified. These seaweeds (50 g; n = 5) were grown in tanks containing 50 L of eutrophic seawater, with a salinity of 30, a temperature of 28.5 ± 2.8 °C, an irradiance of 547 ± 458 μmol photons m -2 s -1 and aeration. The nutrients levels were recorded daily and when total nitrogen removal was detected, the biomass was measured. After five days of cultivation, more than 98% of NH3 (H = 1.1; P = 0.56) and NO3 -(H = 2.7; P = 0.25) and 62.1% of PO4 3-(H = 0.0; P = 0.90) had been removed from the tanks. However, the mean daily growth rate (4.5 ± 2.5% day -1 ) and productivity (3.5 ± 1.9 g m -2 day -1 ) of U. fasciata and G. birdiae were higher than U. flexuosa (-13.6 ± 7.7% day -1 ; -6.24 ± 2.8 g m -2 day -1 ; P<0.01), demonstrating that microalga contamination by this species promoted high removal efficiency in the tanks, but a low productive performance. Based on these results, U. fasciata and G. birdiae show a greater potential for use in IMTA to improve water quality and produce biomass.Keywords: Gracilaria birdiae; productivity; daily growth rate; nutrient removal; Ulva fasciata; Ulva flexuosa EFICIÊNCIA BIOFILTRADORA E DESEMPENHO PRODUTIVO DE MACROALGAS COMPOTENCIAL PARA AQUICULTURA MULTI-TRÓFICA INTEGRADA (AMTI) RESUMOAs macroalgas são utilizadas em diversos setores industriais e agrícolas. Além disso, muitas espécies apresentam potencial para aquicultura multitrófica integrada (AMTI), pois são eficientes na remoção de nutrientes da água. A eficiência biofiltradora e desempenho produtivo das macroalgas Ulva flexuosa, U. fasciata e Gracilaria birdiae e foram quantificados em tanques outdoor. As algas (50 g; n = 5) foram cultivadas em tanques de 50 L, com água eutrofizada, salinidade 30 e temperatura média 28,3 °C. Os nutrientes foram monitorados diariamente e a biomassa foi mensurada assim que detectada a extinção do nitrogênio. Após cinco dias de cultivo, mais de 98% de NH3 (H = 1,1; P = 0,56) e de NO3 -(H = 2,7; P = 0,25) e 62,1% de PO4 3-(H = 0,0; P = 0,9) foram removidos dos tanques. Contudo, a taxa de crescimento (% dia -1 ) e a produtividade (g m -2 dia -1 ) de U. fasciata e de G. birdiae (4,5 ± 2,5% dia -1 ; 3,5 ± 1,9 g m -2 dia -1 ) foram superiores às de U. flexuosa (13,6 ± 7,7% dia -1 ; 6,2 ± 2,8; P<0,01), cuja contaminação por microalgas contribuiu para elevada eficiência de retirada nos tanques desta espécie, mas baixo desempenho produtivo. Desta forma, U. fasciata e G. birdiae foram indicadas para AMTI tanto para a manutenção da qualidade da água quanto para aproveitamento de biomassa.

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“…Glenn & Doty (1981) menunjukkan bahwa Eucheuma memanfaatkan 24% nitrat/nitrit ion dan 6% fosfat dari air yang melewati rumpun rumput laut tersebut dan rata-rata perbandingan N/P di air adalah 8,5 pada air laut tempat budidaya Eucheuma. Rumput laut biasanya memiliki laju pertumbuhan yang tinggi ketika berada di lingkungan yang kaya nitrogen dan fosfor (Oliveira et al, 2012).…”

Section: Perfomansi Pertumbuhan Dan Produktivitas Rumput Lautunclassified

Tingkat Penyerapan Nitrogen Dan Fosfor Pada Budidaya Rumput Laut Berbasis Imta (Integrated Multi-Trophic Aquaculture) Di Teluk Gerupuk, Lombok Tengah, Nusa Tenggara Barat

Yuniarsih

Nirmala

Radiarta

2014

Jurnal Riset Akuakultur

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ABSTRAKPengembangan budidaya laut berbasis IMTA (Integrated Multi-Trophic Aquaculture) merupakan suatu metode yang dirancang untuk mengatasi masalah lingkungan yang terkait dengan penggunaan pakan pada kegiatan akuakultur. Penelitian ini bertujuan untuk menganalisis tingkat penyerapan nitrogen dan fosfor pada budidaya rumput laut berbasis IMTA di Teluk Gerupuk Kabupaten Lombok Tengah. Rumput laut jenis Kappaphycus alvarezii dan Eucheuma spinosum dibudidayakan dengan metode rawai (long line). Pengamatan terhadap rumput laut dan kondisi perairan dilakukan setiap 15 hari; mulai hari ke-0 sampai hari ke-45. Hasil penelitian menunjukkan bahwa adanya perbedaan tingkat penyerapan nitrogen dan fosfor antara dua jenis rumput laut yang dibudidayakan. Total penyerapan nitrogen rumput laut K. alvarezii di lokasi IMTA mencapai 86,95 ton N/ha/tahun atau lebih tinggi 24,6% dibandingkan dengan E. spinosum yang mencapai 69,78 ton N/ha/tahun. Sedangkan untuk tingkat penyerapan fosfor, K. alvarezii mencapai 20,56 ton P/ha/tahun atau lebih tinggi 136,7% dibandingkan dengan E. spinosum yang hanya mencapai 8,69 ton P/ha/tahun. Berdasarkan luasan kawasan potensial budidaya rumput laut di Teluk Gerupuk, maka potensi penyerapan nitrogen dan fosfor untuk rumput laut K. alvarezii di kawasan ini masing-masing mencapai 27.996,93 ton N/tahun dan 6.619,16 ton P/tahun. Sedangkan untuk E. spinosum potensi penyerapan nitrogen dan fosfor masing-masing mencapai 22.470,02 ton N/tahun dan 2.796,82 ton P/tahun. Penerapan budidaya rumput laut berbasis IMTA secara jelas memberikan keuntungan ekonomi dan ekologi dengan adanya peningkatan biomassa dan perbaikan kondisi lingkungan budidaya.

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Influence of depth on the growth of the seaweed <i>Gracilaria birdiae</i> (Rhodophyta) in a shrimp pond

Cited by 20 publications

References 17 publications

Cultivation of three color strains of Gracilaria domingensis in an integrated organic system

Cultivation of three color strains of Gracilaria domingensis in an integrated organic system

Biofiltering efficiency and productive performance of macroalgae with potential for integrated multi-trophic Aquaculture (IMTA)

Tingkat Penyerapan Nitrogen Dan Fosfor Pada Budidaya Rumput Laut Berbasis Imta (Integrated Multi-Trophic Aquaculture) Di Teluk Gerupuk, Lombok Tengah, Nusa Tenggara Barat

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