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A review of the global use of fishmeal and fish oil and the Fish In:Fish Out metric
Majluf, P.; Matthews, K.; Pauly, D.; Skerritt, D.J.; Palomares, M.L.D. (2024). A review of the global use of fishmeal and fish oil and the Fish In:Fish Out metric. Science Advances 10(42): eadn5650. https://dx.doi.org/10.1126/sciadv.adn5650
In: Science Advances. AAAS: New York. e-ISSN 2375-2548, meer
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| Auteurs | | Top |
- Majluf, P.
- Matthews, K.
- Pauly, D., meer
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- Skerritt, D.J.
- Palomares, M.L.D.
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| Abstract |
Aquacultured carnivorous species consume most of the world’s fishmeal and fish oil (FMFO), which itself is primarily derived from small pelagic fish. This has raised concerns about the practice’s impact on wild fish stocks, ecosystems, and coastal communities that rely on these fish. The aquaculture industry claims a decreasing dependence on wild fish, relying on the Fish In:Fish Out (FIFO) metric as a ratio of the quantity of wild fish required for farmed fish production. This is misleading because it usually assumes constant FM or FO yields, inclusion rates and feed conversion ratios, which vary widely. Thus, a constant FIFO value for a given species cannot be assumed. Furthermore, low FIFO values resulting from averaging carnivores and herbivores conceal the high feed requirements of carnivore species. The increasing use of FMFO from by-products does not demonstrate a decreased use of wild fish but rather reflects a growing demand for FMFO, particularly for the fast growing and valuable salmon and shrimp farming industries. |
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