Tyne Salmon Deaths 2005 - Fly Fishing Forum
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Old 09-06-2005, 08:11 AM
TYNE SPEYCASTER TYNE SPEYCASTER is offline
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Tyne Salmon Deaths 2005

With the low water and high temperatures we are once again experiencing the sad and distressing sight of extensive deaths of Salmo Salar on Englands Premier Salmon Fishery, the Tyne .(Environment Agency claim)
Most of the deaths have occurred in the estuary, as previous death years, as expected, however this year an increasing number are dying up to 20 miles above the tide.
Symptoms are same ie red sores on the belly, internal bleeding and live fish throwing themselves out of the river prior to death!!
My question, through these pages, is to ask if any similar occurrances have been experienced elsewhere in the Salmo Salar domain, worldwide, during 2005, or is it just a Tyne problem.

Thanks

Mike
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Old 09-06-2005, 09:35 AM
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juro juro is offline
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This is a serious concern... have there been any studies by biologists in the area?
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Old 09-06-2005, 01:21 PM
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Mike

The symptoms you have put forth sound like Infectious Salmon Anemia or ISA Disease. This is a disease mostly associated with hatchery raised Atlantic salmon and is fatal. From what I have read, it can show up in wild fish if they are exposed to farm raised fish that have the disease. Do you have any Aquiculture going on near the mouth of this river? Keep in mind this is all speculation by an untrained armature who reads entirely too much. Juro makes a point; you should try to find out if a biologist has done any research on the problem.

Charlie.
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Old 09-07-2005, 03:22 AM
TYNE SPEYCASTER TYNE SPEYCASTER is offline
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Juro/Charlie

The Environment Agency (EA) and MAFF have been investigating for the last 10 years or so and have come to the conclusion that this is a pathegon naturally caused/brought on by the stress of the fish trying to cope with the lack of disolved oxygen in the estuary.
The Tyne has a very long tidal estuary, is heavily industrialised and has nasties in the silts from the shipbuilding days. The new sewage interceptor network has rejuvenated the quality of the estuary but in hot dry summers we always have a problem, especially with Salmo salar
We have a large reservoir at the head of the system and it took us 5 years to persuade the EA to release water, to encourage fish out of the estuary, into the system and hopefully safety. The EA had always maintained it was not natural conditions and that the fish would not move on this water, we urged them to try it, what had they got to lose, we had fish to lose!! The result was, of coarse, that the fish did run on the release and most survived because of it.
The EA still appear reluctant to sanction a release until the fish are dying on mass, its true they have other obligations to other water users other than we anglers, but dead fish is guaranteed to get our blood up!!
Hence my original question, have fish been dying elsewhere during this hot dry summer?

Mike
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Old 09-07-2005, 07:46 AM
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The Cascapedia river on the Gaspe had a fish kill this year due to low warm water. I heard of some other fish kills but have no details.

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Old 09-07-2005, 08:55 AM
G Ritchie G Ritchie is offline
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There was a similar fish kill on the Aberdeenshire Dee during the late summer of 2003. The main cause was the lack of oxygen due to high water temperatures and a large number of fish confined to one pool in the upper tidal reaches due to extreme low water levels.
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