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  #1  
Old 10-07-2014, 05:27 PM
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Angry Sea Lice on Skye sea trout!

I reieved an email from a friend who lives on the Isle of Skye. He fishes many of the lochs and streams but also fishes in the sea for sea trout.

Last week he found himself catching many sea trout, mainly herling, in one session. Unfortunately the least amount of sea lice on any of the catch was 10. Many had between 20 to 30 on them.

I can remember reading an article by the Atlantic Salmon Trust in which they said that a burden of 10 sea lice was enough to kill a smolt.

Given that the Loch Carron salmon farms are not far away I do not suppose that this will surprise many people, but it saddened me.

I know that little, if anything, migratory runs up the Ax (Applecross) river anymore, and that one or two assocations are trying to introduce hatchery salmon in the small west coast rivers in that area. But given that the inappropriately named Alec Salmond wants to increase the amount of samon farms upon independance, the future of the anadromous West Coast fish looks bleak!

Perdix.
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  #2  
Old 10-07-2014, 05:41 PM
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Default Re: Sea Lice on Skye sea trout!

While in no way trying to play down the disaster that is salmon farming it is worth pointing out that 20 - 30 lice on a herling can occur naturally. I saw it several years on rivers in Devon and Dorset where there are no salmon farms at all.

On the other hand I have seen several heavily liced smolts that have turned round and come straight back into the lochs here on Uist this year. This has been on the east side of the island where all the Uist salmon farms are. The main South Uist migratory systems are on the west coast of the island and these seem to be clear of high lice numbers (so far...).

Sadly there isn't going to be an end to salmon farming anytime soon.


Andy
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  #3  
Old 11-07-2014, 08:59 AM
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Default Re: Sea Lice on Skye sea trout!

Every run of fresh sea trout and salmon have sea lice , and always have had, sea lice fall of after being in fresh water for a while, love catching fresh run fish from the sea, strong and fast, Never knew it done them any harm ? and never knew it had anything to do with farming them ? Have seen sea lice on sea trout and salmon long before any fish farms have been up and running..
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  #4  
Old 11-07-2014, 09:49 AM
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Default Re: Sea Lice on Skye sea trout!

Quote:
Originally Posted by doddle View Post
Every run of fresh sea trout and salmon have sea lice , and always have had, sea lice fall of after being in fresh water for a while, love catching fresh run fish from the sea, strong and fast, Never knew it done them any harm ? and never knew it had anything to do with farming them ? Have seen sea lice on sea trout and salmon long before any fish farms have been up and running..
Your talking about it the wrong way round.It's when the Salmon/Seatrout smolts 'go' to sea that the lice burden becomes fatal.Not when they are returning to the river as adults.

Jim
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Old 11-07-2014, 10:02 AM
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Default Re: Sea Lice on Skye sea trout!

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Originally Posted by doddle View Post
Every run of fresh sea trout and salmon have sea lice , and always have had, sea lice fall of after being in fresh water for a while, love catching fresh run fish from the sea, strong and fast, Never knew it done them any harm ? and never knew it had anything to do with farming them ? Have seen sea lice on sea trout and salmon long before any fish farms have been up and running..
doddle, you never read any of the Salmon Farm Protest Group literature then? Or of the work done by The Atlantic Salmon Trust on why over 40 rivers on the West Coast of Scotland now have no measurable runs of migratory fish? Or of the law suit brought by Peter Mantle (Delphi fishery) against the salmon farms that ruined his fishery?

I do not wish to be rude but I am astounded by your comment.

Perdix.
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Old 11-07-2014, 11:08 AM
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Default Re: Sea Lice on Skye sea trout!

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Originally Posted by roobarb View Post
...On the other hand I have seen several heavily liced smolts that have turned round and come straight back into the lochs here on Uist this year. This has been on the east side of the island where all the Uist salmon farms are. The main South Uist migratory systems are on the west coast of the island and these seem to be clear of high lice numbers (so far...)...
Andy - I had a smallish sea trout on Roag (west side of island for those who don't know) last year that was covered in about 40-50 sea lice. Don't know if the lice are sweeping round from the east or if the fish had travelled round and back?

Col
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Old 11-07-2014, 12:18 PM
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Default Re: Sea Lice on Skye sea trout!

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Originally Posted by perdix View Post
doddle, you never read any of the Salmon Farm Protest Group literature then? Or of the work done by The Atlantic Salmon Trust on why over 40 rivers on the West Coast of Scotland now have no measurable runs of migratory fish? Or of the law suit brought by Peter Mantle (Delphi fishery) against the salmon farms that ruined his fishery?

I do not wish to be rude but I am astounded by your comment.

Perdix.
Well like i say i never knew it done them any harm, and have seen sea lice before fish farms..just stating a fact. Dont want to upset anyone...
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Old 11-07-2014, 02:24 PM
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Default Re: Sea Lice on Skye sea trout!

Doddle the lice on incoming fish aint the problem man as they-lice- can not tolerate fresh water for more then two three days,this is why we like to see a few on salmon we catch , it means they are two/three days out of the salt. Smolt do not have this advantage and once heavily attacked have little chance of survival and will therefore never return to spawn. Do you get me?
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Old 11-07-2014, 03:47 PM
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Default Re: Sea Lice on Skye sea trout!

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Originally Posted by doddle View Post
Well like i say i never knew it done them any harm, and have seen sea lice before fish farms..just stating a fact. Dont want to upset anyone...
I don't think you have upset anyone. We are just staggered that an angler aware of sea lice isn't aware of the problems with sea lice from salmon farms. Have you never heard of loch Maree or Shiel?


Quote:
Originally Posted by Cap'n Fishy View Post
Andy - I had a smallish sea trout on Roag (west side of island for those who don't know) last year that was covered in about 40-50 sea lice. Don't know if the lice are sweeping round from the east or if the fish had travelled round and back?

Col
Actually I lied! I have seen one smolt* on the Roag system this year that was plastered with them. A seven inch fish with 20 plus lice and in very poor condition. There are a few small sea trout on the west side most years with heavy lice burdens and I assume that they have been around the east side but can't be sure. I would have thought that if such high numbers were being swept through to the west side far more fish would have them (in high numbers).

Fishing Loch Bee (the fully tidal end) this season I have seen a mixture of sea trout, finnock, and browns (from 12oz to 2.5lb) all with sea lice. Only the finnock (and very small ones at that) have had very high numbers of lice.
What do you call a brown trout with long tailed sea lice?

*I suppose strictly speaking it was a finnock as it had been to sea. But this is stretching the point a bit. It had dropped down to sea, got covered in lice and came straight back (early June). You used to hear about this happening a lot when the farms started and the smolt runs were higher. I don't suppose it is so noticable now the runs are so low on many systems.


Andy
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Old 11-07-2014, 04:01 PM
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Default Re: Sea Lice on Skye sea trout!

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Originally Posted by roobarb View Post
There are a few small sea trout on the west side most years with heavy lice burdens and I assume that they have been around the east side but can't be sure. I would have thought that if such high numbers were being swept through to the west side far more fish would have them (in high numbers).
Aye, I think you are right. The other fresh-ish fish we had on Roag and Fada were clear, but I think if they had been as bad as that one fish on the way in, they would have shown signs of damage. It was probably one that roamed round the east side.

Col
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