Coculture of the Pacific white shrimp Litopenaeus vannamei and the macroalga Ulva linza enhances their growth rates and functional properties

Gao, Guang; Gao, Lin; Fu, Qianqian; Li, Xinshu; Xu, Juntian

doi:10.1016/j.jclepro.2022.131407

Cited by 21 publications

(4 citation statements)

References 54 publications

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“…2c,f reflect lower levels of seaweed growth in most areas (limited nutrients) and high-end cost assumptions. Since our ability to accurately assess the role of nutrient constraints as a determinant of yield is a major driver of total uncertainty in cost, our results are thereby likely to encompass a wide range of outlooks, including substantial future reductions in farming costs related to technological breakthroughs, returns to scale and boosted productivity (for example, autonomous farms, depth cycling, artificial upwelling and offshore integrated multitrophic aquaculture 36,37 ). Although the spread in average cost in the 1% of ocean area where costs are lowest (labels beneath each panel) ranges from $190 to $2,790 per ton of dry weight (tDW) seaweed yield, regional patterns of production costs are relatively consistent across cost simulations (Fig.…”

Section: Seaweed Production Costmentioning

confidence: 99%

“…2) than in simulations in which seaweed is allowed to use all ambient nutrients. This suggests that without methods to enhance nutrient availability (for example, depth cycling, artificial upwelling, or offshore integrated multitrophic aquaculture 36,37 ), limiting seaweed yields to maintain surface ocean nutrient levels might be cost-prohibitive except in the most optimistic technoeconomic scenarios.…”

Section: Seaweed Production Costmentioning

confidence: 99%

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Economic and biophysical limits to seaweed farming for climate change mitigation

et al. 2022

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Net-zero greenhouse gas (GHG) emissions targets are driving interest in opportunities for biomass-based negative emissions and bioenergy, including from marine sources such as seaweed. Yet the biophysical and economic limits to farming seaweed at scales relevant to the global carbon budget have not been assessed in detail. We use coupled seaweed growth and technoeconomic models to estimate the costs of global seaweed production and related climate benefits, systematically testing the relative importance of model parameters. Under our most optimistic assumptions, sinking farmed seaweed to the deep sea to sequester a gigaton of CO2 per year costs as little as US$480 per tCO2 on average, while using farmed seaweed for products that avoid a gigaton of CO2-equivalent GHG emissions annually could return a profit of $50 per tCO2-eq. However, these costs depend on low farming costs, high seaweed yields, and assumptions that almost all carbon in seaweed is removed from the atmosphere (that is, competition between phytoplankton and seaweed is negligible) and that seaweed products can displace products with substantial embodied non-CO2 GHG emissions. Moreover, the gigaton-scale climate benefits we model would require farming very large areas (>90,000 km2)—a >30-fold increase in the area currently farmed. Our results therefore suggest that seaweed-based climate benefits may be feasible, but targeted research and demonstrations are needed to further reduce economic and biophysical uncertainties.

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Section: Seaweed Production Costmentioning

confidence: 99%

Section: Seaweed Production Costmentioning

confidence: 99%

Economic and biophysical limits to seaweed farming for climate change mitigation

et al. 2022

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“…Plastic pollution is a transport vehicle that may accelerate the spread of infectious diseases (Zettler et al 2013;Laverty et al 2020;Du et al 2022). Mariculture usually lowers seawater pH due to intense respiration (Gao et al 2022) and produces plastic wastes from lost culture gear and packaging so that some seafood growing areas have a severe plastic pollution problem (Chen et al 2018;Feng et al 2020). The intersection of global change, plastic pollution and altered microbial communities is a major unstudied risk in mariculture.…”

Section: Discussionmentioning

confidence: 99%

Ocean acidification has a strong effect on communities living on plastic in mesocosms

Zhang

Deng

et al. 2023

Limnol Oceanogr Letters

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Plastic waste in the ocean is an urgent environmental concern and has given rise to a novel habitat, known as the "plastisphere." Under ocean acidification (OA), changes in plastisphere community composition may alter plastic degradation, deposition, and passage through food webs, but these have not been studied yet. This is the first study about the effects of simulated high CO 2 on the plastisphere using a mesocosm. We discovered that after 1 month the beta diversity of prokaryotic communities living on single-use plastic drinking bottles was significantly different under different carbon dioxide concentrations, with more pathogens at high CO 2 . Based on function prediction analysis, the relative abundance of bacterial taxa involved in nitrogen and nitrate respiration and ureolysis was significantly higher under simulated high CO 2 . We conclude that OA has significant effects on the plastisphere and its predicted functions.

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“…Vaname shrimp farming is in great demand owing to its many advantages, including high economic value and market demand (Azhar et al, 2021). L. vannamei is a source of proteins and minerals and contains eicosapentaenoic (EPA) and docosahexaenoic (DHA) acids, which are essential for human health (Gao et al, 2022). However, there are several obstacles in vaname shrimp farming, including vibriosis.…”

Section: Introductionmentioning

confidence: 99%

Increased non-specific immune activity of vaname shrimp Litopenaeus vannamei using a leaf flour mixture from Ocimum basilicum and Piper betle and their characteristic compounds

Harlina,

Rosmiati,

Hamdillah

et al. 2023

Preprint

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Immunostimulants are more suitable for improving the health of shrimp than using drugs in the prevention of diseases. This study evaluated the efficacy of bioactive compounds from Ocimum basilicum and Piper betle in increasing the non-specific immune response of Litopenaeus vannamei. Samples were collected directly from a traditional market. Shrimp was fed: O. basilicum leaf flour- and P. betle leaf flour-un-supplemented diet (P1), O. basilicum leaf flour (44.84 g/kg feed)-supplemented diet (P2), P. betle leaf flour (31.57 g/kg feed)-supplemented diet (P3), and O. basilicum leaf flour (22.42 g/kg feed)- and P. betle leaf flour (16.79 g/kg feed)-supplemented diet (P4). Phytochemical screening tests were conducted using commonly used chemical reagents, including Dragendorff, Meyer, and Liebermann-Burchard reagents. Supplementation with O. basilicum and P. betle (P4) significantly enhanced the shrimp’s immune response, namely the total hemocyte counts (THC), phagocytic activity (PA), phagocytic index (PI), and prophenoloxidase (proPO). The supplemented diet (P4) was synergistically able to improve shrimp health, with the highest values for THC (7.30 x 106 cells/mL), hyaline (61.33%), PA (84%), PI (2.19), and proPO (0.91). Flavonoids and alkaloids in the feed containing leaf flour from both plants were bioactive compounds suspected to be responsible for enhancing the immune response. These findings suggest that a leaf flour combination of O. basilicum and P. betle can be a new immunostimulant alternative to improve shrimp health for disease prevention.

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Coculture of the Pacific white shrimp Litopenaeus vannamei and the macroalga Ulva linza enhances their growth rates and functional properties

Cited by 21 publications

References 54 publications

Economic and biophysical limits to seaweed farming for climate change mitigation

Economic and biophysical limits to seaweed farming for climate change mitigation

Ocean acidification has a strong effect on communities living on plastic in mesocosms

Increased non-specific immune activity of vaname shrimp Litopenaeus vannamei using a leaf flour mixture from Ocimum basilicum and Piper betle and their characteristic compounds

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