Broodstocking
Broodstocking is
the foundation of many native stock revitalization efforts. With the arrival
of the rains each fall adult salmon and Steelhead begin the migration back
to their native rivers. Volunteers capture the returning salmon and
Steelhead and transfer them to holding ponds or raceways at a hatchery
facility where they remain until they are “ripe” or ready to spawn.
The men are
pictured sorting females to see if the eggs are individually loose and no
longer in a skein form. The ripe fish are put down and carefully handled to
prevent the eggs from seeping out of the fish. If the eggs begin to seep
out, the fish are placed upside down in the rack as shown. After sorting,
an equal number of males are milked. The eggs are then carefully placed
into a round five gallon bucket. After the bucket is 3/4 full it's sealed
with a lid. Ovarian fluid, spleen, and kidney samples are also taken and
sent to the WDFW lab in Olympia for testing.
The process of
broodstocking greatly increases the survival rate of spawned eggs. When left
to nature only about 20 percent of eggs spawned will survive and hatch. With
broodstocking assistance up to 80 percent of spawned eggs survive. After
hatching these young fry have a brief stay at the hatchery or rearing pond
until they are large enough for release into their native rivers. The
objective of this intensive volunteer effort is to dramatically increase the
number of native fish returning to spawn in the coming years.
Native
Broodstocking Projects performed in the Chehalis Basin:
 |
Chehalis Native Chinook Project:
Capturing Chehalis Wild Chinook, sponsored by
the Elma Game Club (temporarily suspended). |
 |
Satsop
Springs: Capturing wild Chinook and Chum on the East Fork Satsop
River, sponsored by the Chehalis Basin Fisheries Task Force. |
 |
Long Live The
Kings: Capturing wild Chinook on the Wishkah River, sponsored by
Long Live The Kings. |
 |
Satsop
Steelhead: Capturing wild Steelhead on the Satsop River,
administered by the Elma Game Club (temporarily suspended) |
 |
Chehalis
Steelhead: Capturing wild Chehalis Steelhead, sponsored by the
Upper Chehalis Fisheries Enhancement Association. |