Maximising sustainable nutrient production from coupled fisheries-aquaculture systems
Publication Date
2022-03-01Journal Title
PLOS Sustainability and Transformation
ISSN
2767-3197
Publisher
PLOS
Volume
1
Issue
3
Language
en
Type
Article
This Version
VoR
Metadata
Show full item recordCitation
Willer, D., Robinson, J., Patterson, G., & Luyckx, K. (2022). Maximising sustainable nutrient production from coupled fisheries-aquaculture systems. PLOS Sustainability and Transformation, 1 (3) https://doi.org/10.1371/journal.pstr.0000005
Description
Funder: Waterloo Foundation; funder-id: http://dx.doi.org/10.13039/100012107
Funder: Leverhulme Trust; funder-id: http://dx.doi.org/10.13039/501100000275
Funder: Henslow Fellowship
Abstract
Aquaculture expansion is expected to meet growing demand for sustainable animal-source foods. Yet marine-fed species already require millions of tonnes of wild-caught fish for feed, over 90% of which are nutritious food-grade species. Allocating feed fish for human consumption could reduce pressure on marine resources while increasing seafood production. We examine micronutrient flows (the transfer of micronutrients from feed to fish) in Scotland's farmed salmon industry, which is particularly reliant on marine feeds, to show that 1-49% of essential dietary minerals and fatty acids available in wild fish are retained in farmed salmon. Using three alternative production scenarios we show that reducing marine feeds in salmon production and allocating wild-caught feed fish for human consumption could produce more nutritious seafood and leave 66-82% of feed fish in the sea. Using global data on marine-fed aquaculture production, we show that removing wild-caught fish from salmonid production could leave 3.7 Mt fish in the sea while increasing global seafood production by 6.1 Mt.
Keywords
Research Article, Biology and life sciences, Earth sciences, Medicine and health sciences
Sponsorship
D.F.W. was funded by the Department of Zoology and a Henslow Fellowship at Murray Edwards College, University of Cambridge. J.P.W. R. was funded by a Leverhulme Trust Early Career Fellowship. K.L. was funded by the Waterloo Foundation.
Identifiers
pstr-d-21-00005
External DOI: https://doi.org/10.1371/journal.pstr.0000005
This record's URL: https://www.repository.cam.ac.uk/handle/1810/334559
Rights
Licence:
http://creativecommons.org/licenses/by/4.0/
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