Sign in to follow this  
Glalaksen

Norske Lakseelver: Gjenutsetting av laksefisk

Recommended Posts

Norske Lakseelver

 

 

Gjenutsetting av laksefisk

 

Fiskeforvaltningen har lange tradisjoner for å rette fisket mot ønskede fiskearter, størrelsesgrupper av fisk, kjønn eller livsstadier.

Dette gjøres bl.a. ved å pålegge fiskerne å gjenutsette fisk som er under minstemålet og fisk som er utgytt (vinterstøing).

Her er det du trenger å vite for å gjøre dette riktig.

 

Link:

https://lakseelver.no/nb/news-2016/gjenutsetting-av-laksefisk

 

 

Brosjyra "Gjenutsetting av laksefisk - fang og slipp!" utgitt av Norges Jeger- og Fiskerforbund (NJFF) og Norske Lakseelver med støtte fra Miljødirektoratet ved Statens fiskefond kan du lese her.

 

Brosjyra "Hvilke forhold påvirker overlevelse og atferd hos gjenutsatt laks?" utgitt av Norsk institutt for naturforskning (NINA) kan du lese her.

 

 

Se også:

 

Atlantic Salmon Federation (ASF):

Live Release - for the Wild Atlantic Salmon

 

Link:

https://www.fiskersiden.no/forum/index.php?/topic/65867-video-live-release-for-the-wild-atlantic-salmon/

 

Edited by Glalaksen

Share this post


Link to post
Share on other sites

Hvilke valg fiskeren tar om redskap, hvordan det fiskes og hvordan fisken håndteres er det som oftest avgjør om fisken overlever etter gjenutsetting.

 

Norsk institutt for naturforskning (NINA):

Hvilke forhold påvirker laks etter gjenutsetting?

 

Link:

http://www.nina.no/gjenutsetting

 

Brosjyra "Hvilke forhold påvirker overlevelse og atferd hos gjenutsatt laks?" kan du lese her.

 

Edited by Glalaksen

Share this post


Link to post
Share on other sites

In many Norwegian rivers, spawning stocks are surveyed for escaped farmed salmon with surveillance fishing by rod and reel after the recreational angling season.

However, the benefits of surveillance fishing depend on the ability of wild salmon to return to the spawning stock.

To evaluate the impacts of surveillance fishing, we captured, radio-tagged and released wild Atlantic salmon Salmo salar in the River Lakselva, Norway, in a surveillance fishery occurring just prior to the spawning period.

Among 39 salmon captured, 36 wild fish were tagged and released, whereas 3 were not released (1 bleeding from the gills, 1 farmed, 1 farmed and bleeding). Survival of fish captured by surveillance fishing was high (95% total survival, 100% catch-and-release survival). Tagged fish were tracked on average 1.2 ± 2.8 (SD) km from the release site at the end of the experiment during the spawning season, not significantly different from the distance moved by salmon radio tagged throughout the summer during a similar interval (15 September to 24 October 2014). Total movement within 3 d of release was inferred to average 1.9 ± 2.1 km, excluding 1 individual that exited the river.

Tracking data revealed an immediate behavioural reaction of salmon to surveillance catch-and-release angling, the long-term consequences of which are uncertain.

Surveillance fishing may be problematic in rivers with small and vulnerable wild stocks in which a high proportion of the spawning populations is sampled.

Surveillance fishing completed with ample time before spawning would be a precautious approach to minimize potential effects during spawning.

 

Behaviour and survival of wild Atlantic salmon Salmo salar captured and released while surveillance angling for escaped farmed salmon

 

Link:

http://www.int-res.com/abstracts/aei/v9/p311-319/

 

Artikkelen "Behaviour and survival of wild Atlantic salmon Salmo salar captured and released while surveillance angling for escaped farmed salmon" kan du lese her.

 

Share this post


Link to post
Share on other sites

The proportion of angled Atlantic salmon Salmo salar L. being caught and released has increased.

If individuals are repeatedly captured, this may have fish welfare consequences.

Of 995 Atlantic salmon tagged during catch and release in eight Norwegian rivers, 10% were captured twice, while 3% were captured three times within the same fishing season.

The probability that released salmon were captured again decreased with decreasing time left of the fishing season, decreased for larger‐sized fish and varied among rivers/years.

Increased exploitation rates within the river, indicating an increased fishing pressure, strongly increased the probability that fish would be recaptured.

However, the proportion of salmon caught a second time was much lower than the total exploitation rates in the same rivers (which was on average 46%).

For fish tagged in the sea, the likelihood of being angled decreased with time since entering the river, which may explain why the recapture rates of caught and released fish were lower than the total exploitation rates.

 

The risk of individual fish being captured multiple times in a catch and release fishery

 

Link:

https://onlinelibrary.wiley.com/doi/full/10.1111/fme.12407

 

Artikkelen "The risk of individual fish being captured multiple times in a catch and release fishery" kan du lese her.

 

Edited by Glalaksen

Share this post


Link to post
Share on other sites

Fisking er en populær aktivitet som gjør at vi kan oppleve natur, koble av og fange fisk.

Fritidsfiske skal være forankret i prinsippet om høsting av et overskudd i naturen, der fangsten samtidig utgjør en verdifull matressurs.

 

Mattilsynet:

Fang og slipp

 

Link:

https://www.mattilsynet.no/fisk_og_akvakultur/fiskevelferd/fang_og_slipp/

 

Edited by Glalaksen

Share this post


Link to post
Share on other sites

Dyrevelferdsloven gjelder også for villfisk, krabber, hummer og kreps.

Det betyr at vi må passe på at lidelsene og påkjenningene til fisk og krabber blir minst mulig ved fangst og avliving.

 

Mattilsynet:

Fritidsfiske og dyrevelferdsloven

 

Link:

https://www.mattilsynet.no/fisk_og_akvakultur/fiskevelferd/fritidsfiske_og_dyrevelferdsloven.21109

 

Share this post


Link to post
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

Loading...
Sign in to follow this