Knowledge for better food systems

Showing results for: Aquaculture

29 May 2019

This report from US charity The Nature Conservancy explores how private investors can help to meet the demand for sustainable seafood by investing in new forms of aquaculture that have lower negative environmental impacts than conventional aquaculture.

24 April 2019

This book gives an overview of aquaponics systems, i.e. combined production of fish and crops, and their social, economic and environmental implications.

24 April 2019

This report from the US-based campaigning organisation Changing Markets Foundation examines the impacts of catching wild fish to feed to farmed fish in aquaculture operations, i.e. reduction fisheries.

Image: Eric, Cooked shrimp, Flickr, Creative Commons Attribution 2.0 Generic
24 April 2019

This paper quantifies the resource use implications of replacing fishmeal with plant-based ingredients in the feed used to farm shrimp. It finds that increasing the proportion of plant-based ingredients in shrimp feed could reduce pressure on marine resources, at the cost of increased use of freshwater, land and fertiliser.

8 April 2019

This book, edited by Mette Vaarst and Stephen Roderick, reviews key challenges and solutions in improving the health and welfare of organic farm animals, including case studies from organic farming of dairy and beef cattle, sheep and goats, pig and poultry.

Image: Narek75, Recirculating Aquaculture System, Wikimedia Commons, Creative Commons Attribution-Share Alike 4.0 International
18 February 2019

Aquaculture generally supplements wild fisheries rather than replacing them, according to this paper, which used models based on historical data.

Image: NEON_ja, Chlorella vulgaris Beijerinck NIES-2170 / Olympus IX71+DP72, Wikimedia Commons, Creative Commons Attribution-Share Alike 3.0 Unported
15 January 2019

Insects, seaweed, microalgae, cultured meat, mycoprotein and mussels are among the nine ‘future foods’ discussed in this paper, co-authored by FCRN members Hanna Tuomisto and Hannah van Zanten, which compares the nutritional profiles and environmental impacts of these foods with conventional plant- and animal-sourced foods.

Image: Cliff, Swirling schools of Anchovies, Wikimedia Commons, Creative Commons Attribution 2.0 Generic
4 September 2018

Farmed fish are often fed on forage fish (such as anchovies and sardines) caught from the wild. A new paper points out that demand for forage fish to support aquaculture production is forecast to grow beyond the maximum sustainable supply level. The authors calculate that demand for forage fish could be reduced to below the maximum supply limit by combining a number of measures: reducing use of forage fish in land-based agriculture, replacing some forage fish with fish trimmings from processing, and reducing the proportion of forage fish in the diets of non-carnivorous farmed fish.

31 July 2018

The FAO has released a report on the current state of knowledge on how climate change will affect fisheries and aquaculture, including mitigation and adaptation options. The report finds that “climate change will lead to significant changes in the availability and trade of fish products”. Marine catches could decrease by 2050 in the tropics and rise in some high latitude regions, with a global decrease in Exclusive Economic Zones of 3% to 12%. Inland fisheries in Pakistan, Iraq, Morocco and Spain may come under greater stress, while those in Myanmar, Cambodia, the Congo, the Central African Republic and Colombia may remain under low stress in the future.

Image: Ian Sherlock, Fishing boat leaving, Canary Islands, Wikimedia Commons, Creative Commons Attribution-Share Alike 2.0 Generic
31 July 2018

A new paper finds that the global marine fishing fleet produces greenhouse gas emissions equivalent to 4% of the total emissions from global food production. The types of fisheries with the highest emissions intensity per unit of catch are those using motorised craft (vs. non-motorised), those harvesting for human consumption (vs. catches used for meal, oil or non-food uses), fishing for crustaceans (vs. other species types) and fisheries in China (vs. those in other regions).

24 July 2018

The FAO has released its 2018 report on world fishery and aquaculture statistics. Key findings include that fisheries output peaked in 2016, having remained approximately static since the late 1980s, while aquaculture production is rising, as shown in the figure below. In 2015, fish accounted for around 17% of global animal protein consumption. One third of fish stocks are currently overfished, although progress has been made in the United States and Australia in increasing the proportion of fish stocks that are sustainably fished.

Image: Claude Covo-Farchi, Mussels at Trouville fish market, Wikimedia Commons, Creative Commons Attribution-Share Alike 2.0 Generic
17 July 2018

Our thanks go to FCRN member Emma Garnett for bringing to our attention a recent paper that investigates how land use could change if consumption were to shift away from meat and towards seafood from aquaculture. Aquaculture systems frequently use feed that is made from land-based crops. The paper studied two aquaculture-heavy scenarios (one using only marine aquaculture, and one using the current ratio of marine to freshwater aquaculture) where all additional meat consumption in 2050 (compared to today) is replaced by aquaculture products. Compared to a business-as-usual scenario for 2050, the aquaculture scenarios use around one-fifth less land to produce feed crops, because of the relative efficiency of aquatic organisms (compared to land-based animals) in converting feed into food that can be eaten by humans.

30 April 2018

This book, edited by Faisal I. Hai, Chettiyappan Visvanathan and Ramaraj Boopathy, discusses the social, economic and environmental sustainability implications of various aquaculture practices.

Image: Dennis Kress, Larvae of the black soldier fly, Wikimedia, Public Domain
26 February 2018

The world’s first insect-fed salmon has been launched by insect producer Protix.

Photo: Jon Oropeza, Flickr, Creative Commons License 2.0
1 February 2018

This blog by researchers Cedric Simon and Ha Truong from CSIRO Agriculture & Food discusses a method they have developed to reduce the amount of wild fish needed for prawn feed.

1 February 2018

In this article, researchers from the UK and USA present their findings of a 2015 case study of Scottish salmon farming, their goal being to illuminate the economic and food security value that may be gained through improved management and use of aquaculture by-products.

6 September 2017

This book, edited by Jessica Duncan and Megan Bailey, includes chapters on a wide range of topics such as cultured meat, aquaculture, land rights and Arctic food security initiatives.

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