From Deseret News archives:
Running red Kokanee salmon
Harvest of eggs boosts survival rate of species
The kokanee salmon are spawning. It is their final act in life. Their once gleaming silver bodies are now a crimson red. And, instead of looking for food, they are searching for a place to mate and die.
Some fish will spawn naturally. That is, they will find a spot in the river, in twos, one male, one female, and lay and fertilize their eggs.
Others will swim into a fish trap, place themselves in the hands of crews from the Utah Division of Wildlife Resources, be stripped of eggs and sperm, and then die.
The end is inescapable. The fate of their young, however, can be determined to some degree.
Survival of hatchery-raised eggs, said Allan Ward, project leader at Strawberry for the DWR, is upwards of 50 percent.
"Spawning naturally, survival is around 5 percent, sometimes maybe up to 10 percent. But survival is a lot less. If you only get two fish that survive from each male and female, that's the way nature works. We help to increase those odds," said Ward.
DWR crews began taking eggs last week.
The goal is to gather around 2 million eggs, which would require stripping about 1,500 female kokanee.
"We had about 1,000 females in our traps when we started, so we're well on our way to our objective," he added.
Even though this run is good, said Ward, it is far short of the best kokanee run, which was in 2000 when 15,000 fish ran through the traps at Strawberry.
"The difference is survival. We had really good year classes leading up to both 1999 and 2000. A lot of the fish we stocked, for whatever reason, were not eaten," he added.
"This year, for the first time, we were able to document kokanee fishing through a creel census. What we found was this was a really good year. We were able to document that a lot of kokanee were caught. A lot of those that were caught were stocked in 2004."
Survival is also related to a change in stocking procedures. Fish were once stocked in the reservoir itself. Now the majority of hatchery-raised kokanee are stocked near the mouths of three main streams Indian Creek, Trout Creek and Strawberry River.
"What we discovered when we stocked kokanee just off the boat ramp was that two years later the fish were back and hanging out around the boat ramp to spawn," Ward explained.
Comments
- Utah Co. freeway should last 40 years 2:35 p.m.
- Meat-eating dinos studied at U. 2:31 p.m.
- BYU's Unga weighing his options 2:30 p.m.
- Stocks rise as trade deficit narrows 2:25 p.m.
- Austria passes gay civil unions bill 2:24 p.m.
- McGrady on pace for All-Star game 2:03 p.m.
- Stubborn storm, shivering nation 1:52 p.m.
- A game-wrecking Heisman finalist 1:43 p.m.
- Deputies search for hunters in Ariz. 1:38 p.m.
- Unions press to drop insurance tax 1:23 p.m.
- Nude bathers cited for lewdness
- Crash landing next to I-15
- Palin signs books, chats with fans
- Few details on missing W.V. mom
- Jazz fall apart late at L.A.
- I-15 expansion barreling south
- Panel passes BCS playoff bill
- Psychologist: Mitchell schizophrenic
- Mutated version of H1N1 found
- Utes crash the glass to get big win
- Letters: Global warming a lie
252 - TCU to play Boise in Fiesta Bowl
206 - BYU football: Bronco weighs in on Hall
192 - Cougars going back to Vegas
150 - Utah/BYU rivalry can be more civil
148 - Palin signs books, chats with fans
141 - Andersen apologizes for Jordan hoax
141 - Max Hall wants to look ahead
123 - Revive full food tax?
104 - Panel passes BCS playoff bill
101
Is Angels Landing perhaps Utah's single most dangerous hiking trail? The...
CAFE standards -- thank you @1:25 p.m. And who made all those SUVs and...
Re: RE:Jake | 12:40 p.m. Dec. 10, 2009 "If you think that changing the...
An old expression says there is a fool born everyday. Demier needs to be...
Reid has plenty of integrity and I would vote for him in a heart beat. A good...
The report about the "camping trip" was made on KSL channel 5 news during the...
Very few people even care about the all-star game. There are just too many...
Kaka-doodle-doodle-doo. You are what you eat.
I always thought one of the great pleasures of being a scout was going skinny...
Pagan, are you really that dense? Or do you just enjoy circular arguments?
A marketing image for Al Gore's "An Inconvenient Truth" shows smokestacks...



You can be the first to comment on this story.