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Thread: Hatcheries

  1. #1

    Default Hatcheries

    So last night I watched upwards of 6 hrs on hatcheries and the cases for and against. It got me thinking, a lot of the negatives seem to stem from the hatcheries not breeding river native fish, or hatching fish into rivers with extreme obstacles/dams/netting and so forth the list is endless.

    Also, many of the obstacles hit in the 70s and 80s have been addressed, but, I feel opinions were formed back then and are hard changed.

    Anyway, what are peoples thoughts on hatching fish into a river, using the fish from the river, caught on that river on their way to spawn.

    The Aaroy in Norway, as shown here is a recent thread, uses 6 breeding pairs a year only, and is having salmon to 70lb return to spawn. A 50lbr posted about a few days ago and seems to be a great example of the benefits.

    Interested to hear peoples opinions on the matter, this relates to salmon and trout.

    What would your opinion be if you found out the IFI (or your regulatory body) were going to stock YOUR river, with hatched salmon or trout, or both, with stock taken from pairs of fish native to that river.

    Sorry if this has been talked to death on here, didnt find a lot on the subject.
    Species 2016 - Dab, Flounder, Pin Whiting, Codling, Dogfish, Bass, 3 bearded Rockling, Trout, Seatrout, Plaice, Smoothhound, Roach, Dace, Pike
    Species 2017 - Dab, Flounder, Pin Whiting, Codling, Dogfish, Bass, Trout, Seatrout, Smoothound Roach, Dace, Weaver
    Species 2018 - Trout, Coalfish, Twaite Shad, Dogfish, Bass, Bull Huss, Flounder, Sea Trout
    Species 2019 - Trout, Salmon

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  2. #2

    Default

    HHmmm

    Was this thread done to death before? Do people genuinely not have an opinion or was it a very stupid question??
    Species 2016 - Dab, Flounder, Pin Whiting, Codling, Dogfish, Bass, 3 bearded Rockling, Trout, Seatrout, Plaice, Smoothhound, Roach, Dace, Pike
    Species 2017 - Dab, Flounder, Pin Whiting, Codling, Dogfish, Bass, Trout, Seatrout, Smoothound Roach, Dace, Weaver
    Species 2018 - Trout, Coalfish, Twaite Shad, Dogfish, Bass, Bull Huss, Flounder, Sea Trout
    Species 2019 - Trout, Salmon

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  3. #3
    Join Date
    Mar 2008
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    Paisley strathclyde.
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    3,513

    Default

    Been done to death before.
    Hatcheries are not the problem. The problem is getting things done.
    Bob.

  4. #4

    Default

    Putting more fish into pesticide polluted rivers infested with non-native predators and with dams and barriers all down the river then expecting the adults to thrive in the sea when we catch their food on a massive scale is a sticking plaster.

    The problem with the argument for / against hatcheries is it always distracts from the real sustainable solutions which is to reduce pollution (increase the biomass holding capacity of the river), reduce predation, remove barriers and stop raping the seas for salmon and sea trout food.

    Do that, and we won't need hatcheries.

    Even worse, put hatcheries on all our rivers and nobody will give a toss about the long term sustainability of our rivers because, well, why should we be concerned - we have hatcheries!

    No, not for me. In fact even for rivers with no salmon now, don't use hatcheries. Clean them up and the salmon will return, for certain.

  5. #5
    Join Date
    Oct 2008
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    edzell
    Posts
    2,438

    Default

    Im with walleye on this one. Its been done to death

    However, the native species thing is the latest fashion.

    The Lochy being the latest to play in this completely made up and fabricated arena.

    The "indigineous" lochy fish effectively went extinct years ago (probably due to fish farming) but look on the bright side MOWI is coming to the rescue with hatcheries of Lochy (indigineous) fish.

    Even though these fish are decedents of Norwegian fish used to restock the Lochy several years ago.

    Coupled with the fact that salmon are great travellers with 10 to 20% going to their non native river to breed annually (someone else can work out the indigenous dilution factor over 10 years)

    And also coupled with the fact that escaped farm salmon are continuously getting in on the act as well.

    I would love the Lochy/MOWI to provide some DNA analysis to demonstrate just how "indigenous" these fish are.

    With all the farm escapees, it would be interesting to do the same with the Aaroy fish and see just how true their genes are.

    For me, salmon are successful partly because of the fact that they are continuously amending their gene pool.

    Cheers

    Mows

  6. #6
    Join Date
    Mar 2013
    Location
    North Yorks
    Posts
    3,852

    Default

    We have a small hatchery on the Ure, a recovering river in which salmon were declared extinct in the 1950s. Its purpose is to replace the spawning capacity lost when one of the best potential spawning becks was dammed to make a reservoir to supply water to Leeds. There is a risk that we may lose the licence in the near future, as there EA contend that the overall population in the river is now self-sustaining.

    The argument between seemingly irreconcilable views has been done to death umpteen times on the Forum, without ever perceptibly changing either party's opinions.

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