Compound climate risks threaten aquatic food system benefits

Tigchelaar, Michelle; Cheung, William W. L.; Mohammed, Essam Yassin; Phillips, Michael J.; Payne, Hanna J.; Selig, Elizabeth R.; Wabnitz, Colette C.C.; Oyinlola, Muhammed A.; Frölicher, Thomas L.; Gephart, Jessica A.; Golden, Christopher D.; Allison, Edward H.; Bennett, Abigail; Cao, Ling; Fanzo, Jessica; Halpern, Benjamin S.; Lam, Vicky W. Y.; Micheli, Fiorenza; Naylor, Rosamond L.; Sumaila, U. Rashid; Tagliabue, Alessandro; Troell, Max

doi:10.1038/s43016-021-00368-9

Cited by 60 publications

(41 citation statements)

References 53 publications

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“…Today, aquatic products are of significant nutritional interest for billions of people worldwide [ 1 ]. Furthermore, aquatic foods are regarded as ideal sources of quality protein and essential fatty acids, which could improve a range of human pathologies [ 2 ].…”

Section: Introductionmentioning

confidence: 99%

Oxidative Stress Can Be Attenuated by 4-PBA Caused by High-Fat or Ammonia Nitrogen in Cultured Spotted Seabass: The Mechanism Is Related to Endoplasmic Reticulum Stress

Dong

Xia

et al. 2022

Antioxidants

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Oxidative stress is a common phenomenon in aquaculture, which can be induced by nutritional or environmental factors. Generally, oxidative stress causes poor growth performance, metabolic dysregulation, and even the death of aquatic animals. To identify a nutritional intervention strategy, high-fat diet (HFD) feeding (Experiment I) and acute ammonia nitrogen challenge (Experiment II) tests were carried out. In Experiment I, HFD feeding significantly decreased the growth performance concomitantly with excessive fat deposition in the liver and abdomen. The addition of 4-PBA in the diet improved the excessive fat accumulation. The activities of antioxidative enzymes were suppressed, and the levels of lipid and protein peroxidation were increased, indicating that HFD feeding induced oxidative stress. The endoplasmic reticulum stress (ERs) related genes were downregulated in the HFD group. Under a transmission electron microscope (TEM), more swollen and dilated ER lumen could be observed. These results indicated that the HFD induced ERs activation. Although 4-PBA acted as a potent ERs inhibitor, as evidenced by the alleviated alterations of ERs molecules and the ER ultrastructure, the oxidative stress was also attenuated by 4-PBA. In Experiment II, dietary 4-PBA improved the tolerance to the acute ammonia nitrogen challenge, as lower mortality and serum aminotransferase activity was found. Further results showed that 4-PBA decreased the peroxidation content and attenuated ERs, thus confirming the correlation between oxidative stress and ERs. Our findings showed that dietary 4-PBA supplementation can attenuate oxidative stress induced by a HFD or acute ammonia challenge; the mechanism is related to its potent inhibition effect for ERs.

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Section: Introductionmentioning

confidence: 99%

Oxidative Stress Can Be Attenuated by 4-PBA Caused by High-Fat or Ammonia Nitrogen in Cultured Spotted Seabass: The Mechanism Is Related to Endoplasmic Reticulum Stress

Dong

Xia

et al. 2022

Antioxidants

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Section: Demersal Fishmentioning

confidence: 99%

“…The degree to which aquatic food systems will be able to keep up with changes in demand also depends on their ability to maintain production in a rapidly changing climate [75][76][77] . The prospects of climate-driven constraints on blue food supplies mean that seafood prices could rise and become more variable in the future, impacting fish consumers, especially the poor who spend a disproportionate share of their income on food 77,78 . Low-income consumers typically respond to rising prices and declining purchasing power by decreasing overall food consumption, shifting from nutrient-rich to energy-rich foods, and substituting from high-to low-quality starchy staples 79 .…”

Section: Demersal Fishmentioning

confidence: 99%

Blue food demand across geographic and temporal scales

Kishore²,

et al. 2021

Self Cite

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Numerous studies have focused on the need to expand production of ‘blue foods’, defined as aquatic foods captured or cultivated in marine and freshwater systems, to meet rising population- and income-driven demand. Here we analyze the roles of economic, demographic, and geographic factors and preferences in shaping blue food demand, using secondary data from FAO and The World Bank, parameters from published models, and case studies at national to sub-national scales. Our results show a weak cross-sectional relationship between per capita income and consumption globally when using an aggregate fish metric. Disaggregation by fish species group reveals distinct geographic patterns; for example, high consumption of freshwater fish in China and pelagic fish in Ghana and Peru where these fish are widely available, affordable, and traditionally eaten. We project a near doubling of global fish demand by mid-century assuming continued growth in aquaculture production and constant real prices for fish. Our study concludes that nutritional and environmental consequences of rising demand will depend on substitution among fish groups and other animal source foods in national diets.

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“…Aquatic foods from marine and freshwater play a significant role in nutrition of billions of people globally, particularly during the COVID-19 pandemic which has jeopardized the global food security (Tigchelaar et al, 2021). Moreover, aquatic foods are considered as unique and rich sources of n-3 long-chain polyunsaturated fatty acids (LC-PUFA) such as EPA and DHA with beneficial impacts in a range of human pathologies particularly cardiovascular diseases (Golden et al, 2021).…”

Section: Editorial On the Research Topic Fish Nutrition Metabolism And Physiologymentioning

confidence: 99%