Achieving sustainable aquaculture: Historical and current perspectives and future needs and challenges

Journal of the World Aquaculture Society, Journal Year: 2020, Volume and Issue: 51(3), P. 578 - 633

Published: June 1, 2020

Abstract Important operational changes that have gradually been assimilated and new approaches are developing as part of the movement toward sustainable intensive aquaculture production systems presented via historical, current, future perspectives. Improved environmental economic sustainability based on increased efficiency continues to be realized. As a result, reduce its carbon footprint through reduced greenhouse gas emissions. Reduced use freshwater land resources per unit production, improved feed management practices well knowledge nutrient requirements, effective ingredients additives, domestication species, farming now being applied or evaluated. Successful expansion into culture marine both off shore, offers potential substantial increases in combined with integrative efforts increase will principally contribute satisfying increasing global demand for protein food security needs.

Language: Английский

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Harnessing genomics to fast-track genetic improvement in aquaculture

Nature Reviews Genetics, Journal Year: 2020, Volume and Issue: 21(7), P. 389 - 409

Published: April 16, 2020

Language: Английский

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The role of the gut microbiome in sustainable teleost aquaculture

Proceedings of the Royal Society B Biological Sciences, Journal Year: 2020, Volume and Issue: 287(1926)

Published: May 6, 2020

As the most diverse vertebrate group and a major component of growing global aquaculture industry, teleosts continue to attract significant scientific attention. The growth in aquaculture, driven by declines wild stocks, has provided additional empirical demand, thus opportunities, explore teleost diversity. Among key developments is recent microbiome exploration, facilitated advances high-throughput sequencing technologies. Here, we consider studies on gut microbiomes context sustainable which have discussed four themes: diet, immunity, artificial selection closed-loop systems. We demonstrate influence had research, while also providing road map for main deterministic forces that microbiome, with topical applications aquaculture. Functional significance considered within an reference impacts nutrition immunity. Finally, identify knowledge gaps, both methodological conceptual, propose promising manipulation future priorities research. These include insect-based feeds, vaccination, mechanism pro- prebiotics, hologenome, in-water bacteriophages recirculating systems (RAS), physiochemical properties water dysbiosis as biomarker.

Language: Английский

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The Tire-Derived Chemical 6PPD-quinone Is Lethally Toxic to the White-Spotted Char Salvelinus leucomaenis pluvius but Not to Two Other Salmonid Species

Environmental Science & Technology Letters, Journal Year: 2022, Volume and Issue: 9(12), P. 1050 - 1055

Published: Nov. 7, 2022

N-(1,3-Dimethylbutyl)-N′-phenyl-p-phenylenediamine-quinone, also known as 6PPD-quinone (6PPD-Q), was recently identified the toxic chemical that causes acute mortality in coho salmon following exposure to urban road runoff. Subsequent studies found there were large differences sensitivity 6PPD-Q (>100-fold) even among salmonid species. Here we performed 96 h toxicity tests of with three species (Salvelinus leucomaenis pluvius, Salvelinus curilus, and Oncorhynchus masou masou) lethally S. pluvius a 24 median lethal concentration (LC50) 0.51 μg/L but not other two at environmentally relevant concentrations (<3.8 μg/L). In addition, measured suspected monohydroxylated metabolite brain gill tissues for The internal (ILC50) estimated be 4.0 μg/kg wet weight 6.2 while tissue surviving exceeded ILC50 values pluvius. These results suggest might affected by toxicodynamic factors well toxicokinetics.

Language: Английский

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Economic, ecological and genetic impacts of marine stock enhancement and sea ranching: A systematic review

Fish and Fisheries, Journal Year: 2018, Volume and Issue: 19(3), P. 511 - 532

Published: Feb. 12, 2018

Abstract Hatchery release is one of the most popular management tools in fisheries, forestry and wild life management, while its negative impacts on populations are a global concern. Research monitoring generally lacking, usefulness hatchery for fisheries conservation objectives unclear. Here, I evaluated positive worldwide marine stock enhancement sea ranching programmes systematic review associated with meta‐analyses goal reducing bias review. Vast numbers individuals more than 180 species released into each year, but studies at experimental stages to assess potential, empirical sparse evaluating impact fishery production. Most cases economically unprofitable except few successful or unevaluated. The effects releasing juveniles can be dwarfed by magnitude natural recruitment when spawning produces much larger juveniles. Density‐dependent growth caused competition food substantial, rates fish other competitive simultaneously reduced stocking exceeded carrying capacity. Relative reproductive success vary depending species, seed quality environmental factors. Empirical show evidence substantial gene flow from hatcheries, fitness reduction stocked has not been reported. results represent current state activity provide key information growing fields artificial propagation conservation.

Language: Английский

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Rethinking fish biology and biotechnologies in the challenge era for burgeoning genome resources and strengthening food security

Water Biology and Security, Journal Year: 2021, Volume and Issue: 1(1), P. 100002 - 100002

Published: Nov. 22, 2021

Fish biology has been developed for more than 100 years, but some important breakthroughs have made in the last decade. Early studies commonly concentrated on morphology, phylogenetics, development, growth, reproduction manipulation, and disease control. Recent mostly focused genetics, molecular biology, genomics, genome biotechnologies, which provided a solid foundation enhancing aquaculture to ensure food security improving aquatic environments sustain ecosystem health. Here, we review research advances five major areas: (1) biological innovations genomic evolution of four significant fish lineages including non-teleost ray-finned fishes, northern hemisphere sticklebacks, East African cichlid Asian cyprinid fishes; (2) evolutionary fates consequences natural polyploid (3) domestication selection; (4) development innovation breeding biotechnologies; (5) applicable approaches potential genetic biotechnologies. Moreover, precision biotechniques are examined discussed detail gene editing introgression or removal beneficial detrimental alleles, use sex-specific markers production mono-sex populations, controllable primordial germ cell on-off strategy producing sterile offspring, surrogate broodstock-based strategies accelerate breeding, incorporation sexual regain-based approach create synthetic polyploids. Based these scientific technological advances, propose blueprint improvement new breed creation species analyze seed industry strengthening security.

Language: Английский

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Impacts of marine and freshwater aquaculture on wildlife: a global meta‐analysis

Reviews in Aquaculture, Journal Year: 2018, Volume and Issue: 11(4), P. 1022 - 1044

Published: Aug. 14, 2018

Abstract The global expansion of aquaculture has raised concerns about its environmental impacts, including effects on wildlife. Aquaculture farms are thought to repel some species and function as either attractive population sinks (‘ecological traps’) or sources for others. We conducted a systematic review meta‐analysis empirical studies documenting interactions between operations vertebrate Farms were associated with elevated local abundance diversity wildlife, although this overall effect was strongly driven by aggregations wild fish at sea cages shellfish (abundance: 72×; richness: 2.0×). Birds also more diverse (1.1×), but other taxa showed variable comparatively small effects. Larger reported when researchers selected featureless unstructured habitats reference sites. Evidence aggregation ‘hotspots’ is clear in systems, we cannot determine whether act ecological traps most taxa, few assess habitat preference fitness Fish collected near larger heavier no change body condition, faced higher risk disease parasitism. mammals frequently preying stock, little data exist the outcomes such birds – likely many species. recommend measure survival reproduction farm‐associated wildlife make direct, causal links populations.

Language: Английский

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Economics of Aquaculture Policy and Regulation

Annual Review of Resource Economics, Journal Year: 2019, Volume and Issue: 11(1), P. 101 - 123

Published: June 21, 2019

Since the Blue Revolution began in late 1960s, global aquaculture production has grown rapidly. Aquaculture now accounts for over half of world's fish direct human consumption and is expected to approach two-thirds by 2030. With aquaculture's growth, a number high-profile concerns have arisen, including pollution, feeding practices, disease management antibiotic use, habitat non-native species, food safety, fraud, animal welfare, impacts on traditional wild fisheries, access water space, market competition, genetics. Managing these requires thoughtful well-designed policies regulations. This manuscript reviews contributions natural resource economics made evaluating policy regulation. Despite their valuable contributions, however, economists been largely underrepresented debate. The primary influencers regulations fisheries managers, environmental groups, scientists. We identify many important areas that should be more thoroughly addressed economists.

Language: Английский

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Atlantic salmon in a rapidly changing environment—Facing the challenges of reduced marine survival and climate change

Aquatic Conservation Marine and Freshwater Ecosystems, Journal Year: 2021, Volume and Issue: 31(9), P. 2654 - 2665

Published: June 21, 2021

Abstract Atlantic salmon populations have declined in recent decades. Many of the threats to species during its freshwater and coastal residency periods are known, management approaches available mitigate them. The global scale climate change altered ocean ecosystems make these more difficult address. Managers need be aware that promoting strong, healthy, resilient wild migrating from rivers is optimal approach currently reduce impacts changing low marine survival. We argue a fundamental strategy should ensure highest number smolts best condition leave areas ocean. There great scope for water quality, river regulation, migration barriers, physical habitat improvements. Maintenance genetic integrity diversity by eliminating interbreeding with escaped farmed salmon, poorly planned stocking, reducing population sizes dangerously levels will support ability adapt environments. Reducing aquaculture other human activities can greatly increase survival affected areas. As most result activities, focus on dimensions improved communication, scientific perspectives, needs increasingly emphasized. When political social coupled adequate resources, managers often tools many salmon.

Language: Английский

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Genomic signatures and correlates of widespread population declines in salmon

Nature Communications, Journal Year: 2019, Volume and Issue: 10(1)

Published: July 5, 2019

Abstract Global losses of biodiversity are occurring at an unprecedented rate, but causes often unidentified. Genomic data provide opportunity to isolate drivers change and even predict future vulnerabilities. Atlantic salmon ( Salmo salar ) populations have declined range-wide, factors responsible poorly understood. Here, we reconstruct changes in effective population size N e recent decades for 172 range-wide using a linkage-based method. Across the North Atlantic, has significantly >60% declines consistently temperature-associated. We identify significant polygenic associations with decline, involving genomic regions related metabolic, developmental, physiological processes. These exhibit presumably adaptive diversity declining consistent contemporary shifts body phenology. signatures widespread decline associated risk scores allow direct potentially predictive links between fitness genotype, highlighting power resources assess vulnerability.

Language: Английский

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