Potentiality of Periphyton-based Aquaculture Technology in Rice-fish Environment

Saikia, Surjya Kumar; Das, Debangshu Narayan

doi:10.3329/jsr.v1i3.2114

Cited by 19 publications

(9 citation statements)

References 42 publications

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“…This study demonstrates the benefits of bamboo substrates in cages for Nile tilapia farming, at least until they reach 500 g. While in ponds, studies have attested the potential of periphyton as a robust source of quality food for stocked fish (Keshavanath et al, 2004;Saikia and Das, 2009), in cages neither Norberg (1999) nor Huchette and Beveridge (2003) found periphyton-based cage culture to be viable. In floating cages in an earthen pond, Sakr et al (2015) showed that the reduction in dietary protein levels in the presence of periphyton substrates improved the performance of Nile tilapia juveniles and increased the costeffectiveness in relation to the traditional strategy of providing tilapia with higher levels of protein and no periphyton.…”

Section: Discussionmentioning

confidence: 93%

The potential of periphyton-based cage culture of Nile tilapia in a Brazilian reservoir

et al. 2016

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In land-based pond cultures, periphyton is considered to be a complementary food source for cultured fish. In cage aquaculture, studies on the use of periphyton are scarce and do not support the viability of periphyton-based cage culture. The aim of this study was to evaluate the potential of periphyton-based cage culture of Nile tilapia in a hydroelectric reservoir in Brazil at three stocking densities and two feeding regimes.Sex-reversed male Nile tilapia Oreochromis niloticus (46.56±2.53 g) were placed in 21 cages (6 m 3 -2 x 2 x 1.5 m each) with or without bamboo substrates for periphyton growth. A completely randomized design with three replicates per treatment was used to test the effect of substrate inclusion in the three stocking densities (80, 60, 40 kg of fish/m 3 ) associated with two feeding regimes (100% and 50% of daily ration). Three cages without bamboo substrates were included in the experimental design as control group (CTRL) (80 kg/m 3 and 100% of daily ration). The study demonstrates the efficiency of using substrates for Nile tilapia in cages in the reservoir. The presence of bamboo substrates improved the weight gain of fish but reduced the carrying capacity of the cage at the highest density. The concentration of dissolved oxygen in the cages was improved by the presence of substrate between 50 and 140 days of the trial and reduced after 155 days of culture. The inclusion of bamboo substrates inside the cages allows producing up to 52 kg/m3 of Nile tilapia using 32% less diet in a period almost 20% shorter than in the CTRL group. If farmers prefer to produce 80 kg/m3, they can use 30 % less diet but the production period would be 20% longer.

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Section: Discussionmentioning

confidence: 93%

The potential of periphyton-based cage culture of Nile tilapia in a Brazilian reservoir

et al. 2016

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“…The phosphorus capturing capacity enables periphyton as a potential bio-fertilizer (Crispim et al 2009;Saikia and Das 2009), but the safety should be considered due to the complex composition of the waters such as heavy metal and toxic elements. Fortunately, periphyton from paddy fields is relatively safe to use as a bio-fertilizer because the soil and water in paddy field are usually nontoxic.…”

Section: Discussionmentioning

confidence: 99%

Periphyton: an important regulator in optimizing soil phosphorus bioavailability in paddy fields

Liu

et al. 2016

Environ Sci Pollut Res

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Periphyton is ubiquitous in paddy field, but its importance in influencing the bioavailability of phosphorus (P) in paddy soil has been rarely recognized. A paddy field was simulated in a greenhouse to investigate how periphyton influences P bioavailability in paddy soil. Results showed that periphyton colonizing on paddy soil greatly reduced P content in paddy floodwater but increased P bioavailability of paddy soil. Specifically, all the contents of water-soluble P (WSP), readily desorbable P (RDP), algal-available P (AAP), and NaHCO 3 -extractable P (Olsen-P) in paddy soil increased to an extent compared to the control (without periphyton) after fertilization. In particular, Olsen-P was the most increased P species, up to 216 mg kg −1 after fertilization, accounting for nearly 60 % of total phosphorus (TP) in soil. The paddy periphyton captured P up to 1.4 mg g −1 with Ca-P as the dominant P fraction and can be a potential crop fertilizer. These findings indicated that the presence of periphyton in paddy field benefited in improving P bioavailability for crops. This study provides valuable insights into the roles of periphyton in P bioavailability and migration in a paddy ecosystem and technical support for P regulation.

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“…In their work, Saikia and Das (, ) observed much higher values of dry matter (DM) and ash‐free dry matter (AFDM) on rice stem than artificial substrate. The overall DM and AFDM increase as the rice field progresses towards flood phase.…”

Section: Agro‐ecology Of Ricefish Farmingmentioning

confidence: 97%

“…Most of the attached forms including Bacillariophyceae are secured to living on substrate by jelly‐like secretions, while others are attached to gelatinous stalks (Patrick ). However, the submerged part of the rice stem favours maximum adherence of algal communities and increases additional surface area for resource exploration (Saikia & Das ). For instance, in Apatani Plateau, the rice stems provide an extra surface area of more than 1000 m 2 for the endemic cultivar known as ‘amo’ with stem diameter of 1.0–1.3 cm submerged into 20–30 cm water in the field (Saikia ).…”

Section: Agro‐ecology Of Ricefish Farmingmentioning

confidence: 99%

Sustainable aquaculture: agro‐ecological role of periphyton in ricefish farming

Saikia

Das

2014

Reviews in Aquaculture

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Aquaculture has a highly promising role in producing fish biomass and fulfilling nutrient requirement for the growing population on the Earth. Worldwide, there exists several substrate-based fish production practices of which Acadja, Athkotu, Samarah, Phum, Aji gnuii assonii, Xeng fishery are popular. These substrate-based fisheries reported higher fish productivity than conventional supplemental feedbased aquaculture. Herbivorous fish, in general, have natural tendency to graze on periphyton ensuring maximum accessibility to resources or acquire enhanced growth in a periphyton fed environment. In waterlogged rice fields with rice stem as substrate, common carp (Cyprinus carpio L.) fishery has been a great success among agro-farmers of Apatani Plateau in north-eastern India. The practice achieves 30% more economic return per annum rice only cultivation. The practice is a best example of sustainable utilization of natural resources for fish production and also a low-cost aquaculture to support poor farmers with shallow, waterlogged resources. The ecology of the rice fields in Apatani Plateau disclosed high richness and diversity of plankton and periphyton in aquatic column. The physico-chemical nature of rice fields directly or indirectly affects the growth and dynamics of periphyton during rice-growing periods. On availability of such aquatic resources, the fish, Common carp, shifts planktivorous or detritivorous feeding habits to periphytophagous habit and attains considerable growth over the stocked period. The present review highlights the immense potentiality of fish culture to explore periphytic resources and need of extending ricefish research towards a sustainable form of aquaculture in rice fields.

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Potentiality of Periphyton-based Aquaculture Technology in Rice-fish Environment

Cited by 19 publications

References 42 publications

The potential of periphyton-based cage culture of Nile tilapia in a Brazilian reservoir

The potential of periphyton-based cage culture of Nile tilapia in a Brazilian reservoir

Periphyton: an important regulator in optimizing soil phosphorus bioavailability in paddy fields

Sustainable aquaculture: agro‐ecological role of periphyton in ricefish farming

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