To save salmon and trout the often-fatal five months struggle against the current, Lancashire's River Board takes them from the rivers, milks them of vital spawn and reloads them into the sea.
G.V. FALL ON RIVER LINE, WESTMORLAND.
S.V. CONTROL VALVE BEING TURNED.
L.V.PAN FROM CONTROL VALVE TO MR. MOFFAT ENTERING SALMON TRAP WITH NET.
S.V. DITTO IN TRAP WITH NET.
S.V. PICKING FISH OUT OF TRAP PUTTING INTO NET.
C.U. FISH IN NET.
S.V. PUTTING FISH INTO TANK ON TRUCK TO BE TAKEN TO HATCHERY..2 MILES AWAY AT MIDDLETON
C.U. MR. LAWSON AT HATCHERY.
S.V. STRIPPING EGGS FROM SALMON.
C.U. DITTO INTO SMALL BOWL.
S.V. EGGS BEING POURED INTO CONTAINER TO BE WASHED.
C.U. EGGS BEING PUT INTO HATCHERY.
S.C.U SALMON BEING LAGGED WITH SILVER WIRE AND PLASTIC TAG.
G.V.PAN MORECOMBE PROMENADE.
S.V. FISH BEING UNLOADED AND PUT INTO SMALL TANKS.
S.C.U. BIG SALMON BEING PUT INTO TANK.
L.V PROMENADE......THEN AFTER FIVE DAYS.
S.V. FISH TAKEN FROM TANK AND PUT INTO PADDLING POOL.
L.V. FISH BEING TAKEN FROM PADDLING POOL AFTER 14 DAYS.
C.U. FISH BEING THROWN INTO SEA.
Initials HV/CW A.S./P.B.
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Background: To save salmon and trout the often-fatal five months struggle against the current, Lancashire's River Board takes them from the rivers, milks them of vital spawn and reloads them into the sea. Visnews filmed this experimental part of the river-restocking programme on Dec 12.
The fish are collected from the upper reaches of rivers and streams in Westmorland, milked of their spawn by the river Board's fishery experts, put into tanks and transported by lorry to Morecambe paddling pool. The five-months struggle down the rivers to sea in their after-spawning condition which kills up to 98% of the fish now becomes a comfortable journey of one hour.
When the fish arrive at Morecambe they are still entirely fresh-water creatures in physique, colouring and behaviour. On arrival the spent fish or "kelts" are put into tanks. Over a period of five days the water in these is made increasingly saline until the fish can be transferred into the pure sea water in the paddling pool. During their stay in the tanks the fish adapt themselves for their period of sea-feeding. They change their haggard, post-natal appearance and become robust and lively. Very few die.
After spending a fortnight in the paddling pool, the fish - each one marked with a plastic tag for future recognition - are taken out to sea and released.
Mr. L. Stewart, the board's fishery officer, discovered changes in the fish' digestive system apparently being prepared for another feeding cycle. He also discovered a development of new ovaries in the hen salmon, not seen in kelts which have to fend for themselves.
The spawn removed from the fish is being cultivated in the hatcheries and the salmon fry produced will be distributed ti rivers and streams.