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  • Whale and Shark whale news

    Whale and Shark whale news

    #1: Long-distance swimming whale

    We know so little about life in the oceans. We find that a Humpback whale (Megaptera novaeangliae) did travel from the west coast of Latin America to the east coast of Africa, i.e. more than 13,000 kilometer, an extraoridnary long migration for an individual of this species, scientists say and puzzle over what could have caused this whale to go that far — mental confusion? desperately looking for a mating partner? However, we should also envisage that this individual behaviour is not so exceptional. The long-distance swimmer has been detected thanks to a new fluke recognition software, so, more long-distant travelling conspecifics could be detected in future.
    More…

    #2 Whale sharks (and not only them) threatened by deep-sea mining

    We know so little about life in the deep sea and what will happen when the industry starts digging there. Just one example: The Sea of Cortez between the Baja California peninsula and the Mexican mainland is one of the few hotspots for whale sharks known to migrate in the Pacific and also dive in the zone around Clarion-Clipperton Island, a key area for deep-sea mining in the Pacific. Whatever happens there will have its consequences in the Sea of Cortez, 2000 kilometres to the north, where global warming is threatening marine life and posing challenges not only to the whale sharks but also to local fishermen and people who live from tourism. This is one example of why the organisation ‘The Ocean and Us’ has launched its petition ‚to call on all governments to take a firm position against deep-sea mining‘.
    More…

  • Industry news

    Industry news

    #1 Wild catch volumes recover, markets stagnate

    An outlook [1] from the UN Food and Agriculture Organisation (FAO) for 2024 predicts a slight increase in fisheries yields of 1.1%, while aquaculture is expected to grow by 3.1%, supported by a downward trend in fish meal and fish oil prices. On the other hand, the value of global trade in fish and seafood is expected to fall by 1.2%, although the volume will continue to increase by an estimated 1.0%.

    (mehr …)
  • Fish welfare: what should we aim for?

    Graph by the author, based on the fair-fish database

    Resources are, as always, limited. Should we then invest in improving some details in the lives of over 500 farmed aquatic animal species, most of which are known not being able to experience welfare in captivity anyway? Or should we rather focus on the few species that possibly may thrive under improved farming conditions?

    (mehr …)
  • Plankton, the unnoticed source of life

    Plankton, the unnoticed source of life

    95% of the planet’s biomass is invisible to the naked eye, and most of it is plankton, very tiny plants (phytoplankton such as microalgae) and animals (zooplantkon such as copepods) that live in the water surface area. Microalgae not only form the base of the aquatic food web, but are also the most important origin of the air we breathe (half of the world’s oxygen is produced by microalgae) and of climate stability (half of the global carbon dioxide is absorbed by microalgae).

    (mehr …)
  • Artisanal fisheries deserve recognition

    Artisanal fisheries deserve recognition

    Artisanal fisheries provide 53% of the fish consumed worldwide, 90% of employment in fisheries, predominantly in the Global South, and 54% of all catch sale revenues (see graph below). They could provide even more if they were not harried by industrial fisheries. Instead, artisanal fisheries are disregarded.

    Artisanal fisher(wo)men in the Global South complain about the frequent disregard of their human rights and demand that their traditional rights to access to water bodies, fishing grounds, landing and transformation sites, and to the market be recognised.

    Fisherwomen in particular complain of discrimination and call for their crucial role in artisanal fisheries, families, and communities to be recognised.

    Fishing communities complain of marginalisation and demand access to public infrastructure, social services, and development.

    On top of these problems, artisanal fisheries on the shores of seas and lakes are among the first to be affected by global warming and therefore need support to overcome its negative impacts.

    This is a short summary of workshops with artisanal fisher(wo)man held during the International Year of Artisanal Fisheries and Aquaculture in 2022, made available through a worth seeing video recently by ICSF [1].

    And what about the fishes?

    The personal summary of one of the ICSF workshop participants is especially interesting:

    Maybe we have to look where we haven’t looked before, put ourselves in the skin of the fish.

    Good point! Putting yourself in the skin of a fish — whether as a consumer, chef,retailer, fishmonger or a primary producer — would also mean to recognise also the rights of the fishes to be at least treated with respect and spared harm as much as possible. It is understandable that fishermen who struggle for their own survival do not pay much attention to the struggle of the animals. A key to substantially reducing animal suffering in fisheries is to improve the living conditions of artisanal fisher communities. The still unrivalled project of fair-fish and artisanal fisheries in Senegal in the noughties [2], which failed because the market was not ready yet, is still waiting for imitators.


    Title picture:
    Artisanal fishermen on the Saloum, Senegal (credit: Michael Hauri)

    Sources:

    [1] Video about the ICSF Workshops in the International Year of Artisanal Fisheries and Aquaculture (IYAFA, 2024). Thanks to the International Collective in Support of Fishworkers (ICSF) that organised the workshops reported by this video,

    [2] see the in-depth chapter in the fair-fish book about the project in Senegal


  • Seafood Business News

    Seafood Business News

    #1: Salmon farming opponent loses court case

    Scottish activist Don Staniford had been forbidden to approach Scottish farming sites of Mowi, the world’s biggest salmon farming company; we reported on it in November 2023 [1]. To be able to continue his investigations on what really happens in industrial salmon farming, Staniford had appealed to the local court which recently followed Mowi’s claim that Staniford has no right to “board, enter onto, physically occupy, attach himself or vessels to all structures, docks, walkways, buildings, floats or pens of Mowi sites” or to “instruct others to act in his place”.
    Staniford is not known to give in. Currently he is considering to appeal to the next instance.
    More
    [1] What are salmon industry leaders trying to hide?

    (mehr …)
  • Just give up shark liver oil

    Just give up shark liver oil

    Instead of following a sensible lifestyle, some people who can afford the price and the thoughtlessness are buying shark liver oil products as a dietary supplement to “treat multiple ailments, including wounds, cancer, heart disease, and infertility“. Research is said to have shown ‚health benefits [thanks] to its high alkylglycerol (AKG), squalene, and omega-3 polyunsaturated fatty acid (PUFA, among which Omega-3) content‘ [1].

    Squalene plays a role in topical skin lubrication and protection [2] and was first extracted from the liver of sharks (Squalus), hence its name, but is produced by most living organisms. However, the  highest squalene content is found in the liver of sharks, especially deepwater sharks and rays whose stocks are therefore overfished, with half of the target species threatened with extinction,   according to a recent study [3]. The authors call for ‚immediate trade and fishing regulations‘ to prevent irreversible damage to deepwater species which are especially sensitive to overexploitation due to their late and slow reproduction.

    What you can do

    If you are looking for a product that contains squalene, make sure it does not contain shark liver oil from.

    And since we’re already talking about it, prefer Omega-3 products made from algae over those made from fish or krill.


    Title picture:
    The enigmatic Greenland shark (credit: Hemming1952 / Wikimedia Commons)
    Find the review of a book on this species, in German: http://billo.ch/blog/?p=2313


    References:

    [1] Shark Liver Oil: Benefits, Uses, and Side Effects

    [2] Squalene

    [3] Fishing for oil and meat drives irreversible defaunation of deepwater sharks and rays


  • Today is Seagrass Day, but maybe not tomorrow…

    Today is Seagrass Day, but maybe not tomorrow…

    Seagrass meadows are an important part of the vulnerable ecosystem between water and land, a habitat for many species and especially for their offspring. But seagrass meadows have become increasingly endangered along many shores which in turn lose the protection against erosion provided by seagrass roots.

    A 30-year-study [1] reveals poor prospects for seagrass meadows. With sea levels rising everywhere, seagrass meadows which grow in shallow water only get increasingly drowned, and many of the new shallow areas along the beaches where seagrass could move to are already occupied by human activities like beach tourism, settlements, harbours, industry, etc.

    While seagrass meadows are vanishing at a rate of 7% per year, scientists and conservationists are trying to restore seagrass [2]. Human ingenuity seems to be almost unlimited. However, as sea levels continue to rise, what we need first of all is the allocation of an almost unlimited share of the newly formed shallow areas—where else would we want to restore seagrass?


    Picture: 
    Seagrass meadow (Posidonia oceanica) (credit: Milorad Mikota / Wikimedia Commons)


    References:

    [1] Rapid sea level rise causes loss of seagrass meadows

    [2] A successful method to restore seagrass habitats in coastal areas affected by consecutive natural events
    See also (in German) about the Majorcan example in preserving seagrass meadows


  • Evolution, migration, and free will

    Pencil mixed with natural photo-textures and digital color. Also features original writings by Charles Darwin from ‚The Origin of Species’. (Artwork by Ade McO-Campbell / Wikimedia Commons)

    Emigration is not an unusual event in nature. The evolution of species can be described as an adaptation to the ecological niche a species succeeded to conquer and colonise. There are events of migration that can been understood as an expression of free will — also in animals?

    (mehr …)

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