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Thread: Fantastic 2008 Salmon returns - and ASF Raffle prizes

  1. Default Fantastic 2008 Salmon returns - and ASF Raffle prizes

    Revolutionary new hatchery method
    In the Eira/Aura river - which once held salmon with an avg weight of 12-13 kg - a new hatchery release method is developed, with very good results. The avg waterflow in the lower river - Eira - is down to 1/3 of what it once was due to abstraction, and the upper river - Aura - is often more or less empty.

    To compensate for this (huge loss of spawning habitat) , the regulator - Statkraft (Norwegian State-owned power company) - has to release smolt in the Eira river every year. This year the return-rate from the sea was much bigger (3 x) than earlier, which is said do be down to a new release method for the smolt. In total 3,7 tons were caught, on the 8 km stretch called Eira river from the sea to the Eikesdal lake :

    * Blood and chlorine tests are used , to establish that first week of May is THE smoltification week
    * The fish is fed with slice-feed (anti - sealice treatment) before being acclimatised in the river in special pens.
    * Then the fish is put in an acclimatisation pen - with a roof - where the smolt is kept for 2 nights, the third night the smolt is released in the river. The release happens at night to greatly reduce predation from gulls and other animals in the estuary.

    The slice-effect lasts 5 weeks, until the smolt should be offshore, away from fish-farms and high sealice-levels caused by fishfarms.

    Maybe something to learn here, for others operating hatcheries ?

  2. #2
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    Default good news...

    but where are you, salmonthink? somewhere in Scandinavia, right? forgive this geographically challenged Yank. nations, capitals, major mountain chains, and rivers, bays, and oceans i know; Eira and Aura are new to me.
    fly fishing and baseball share a totally deceptive simplicity; that's why they can both be lifelong pursuits.

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