ODFW adding sterile tiger trout at Diamond Lake

Raincatcher

Moderator
The Oregon Department of Fish and Wildlife said Friday it plans to add tiger trout to its standard Diamond Lake rainbow trout stocking this June. These brook and brown trout hybrids are reproductively sterile and known to prey on smaller fish – biologists are banking on them to help keep tui chub in check.
A single tui chub was found in a trap net this past fall, and biologists know all too well their life history of explosive population growth in Diamond Lake.
“We know what chub are capable of in Diamond Lake, and we are working with our partners to get ahead of the curve. We looked at many options, and tiger trout came out on top,” said Greg Huchko, Umpqua District fish biologist.
“We wanted to stock a mix of brown and tiger trout, but only tigers are available this year. We will be looking into sterile brown trout for next year in addition to tiger trout.”
Huchko said he’s been meeting with the Umpqua National Forest, Douglas County, and the U.S. Fish and Wildlife Service to discuss stocking, and biologists agreed that stocking sterile tiger and/or brown trout was the best choice. Both species are known to prey on smaller fish.
“Many strains of rainbow trout have been stocked in the past, but unfortunately, our creel surveys showed that even those we thought would prey on tui chub were feeding primarily on insects,” Huchko said. “In the early 2000s, we also experimented with a stocking of North Umpqua strain spring chinook with the hope they would eat tui chub, but most of them migrated out of the lake.”
Fisheries biologists will monitor tiger trout abundance in Diamond Lake although they expect minimal numbers of these trout to migrate into Lake Creek.
“Our goal is to design and implement a stocking strategy that controls tui chub to maintain water quality and angling opportunities. Any tiger trout that may leave or be removed from Diamond Lake are sterile so there is not the risk of these fish species reproducing in the North Umpqua watershed or elsewhere,” said Jason Wilcox, Umpqua National Forest fisheries biologist.
Pending funding, ODFW plans to purchase up to 20,000 three-inch and 5,000 eight-inch tiger trout from Cold Springs Trout Farm, a private hatchery in Utah. The tiger trout would be in addition to ODFW’s regular stocking of 300,000 rainbow trout fingerlings and will likely be catch-and-release only to protect these fish and maintain their numbers.
ODFW and partners also outlined a stepped-up monitoring plan for Diamond Lake, including hiring two seasonal technicians to conduct additional removal of tui chub and golden shiners via beach seines, fyke nets, electro-fishing, and trap nets. Also, ODFW plans to monitor the tiger trout population by continuing creel surveys and operating a smolt trap near the lake’s outlet.
ODFW applied for grants to fund monitoring and fish stocking. The Umpqua Fisheries Enhancement Derby is also helping raise money by holding a “fish frenzy” at its annual derby banquet and auction Friday, Jan. 29.
For every dollar donated, funds will be split to purchase both fish and capture nets for monitoring. A nights lodging in a cabin at Diamond Lake Resort and use of two large, two-person snowmobiles for the day comes with each $1,000 donation while a $500 donation receives a night’s lodging and use of two single-person snowmobiles.
In September 2006, ODFW successfully treated Diamond Lake with rotenone to eliminate an estimated 90 million tui chub at a cost of nearly $6 million, restoring water quality and the recreational rainbow trout fishery.


 

rogerdodger

Moderator
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imagine that, said Capt. Obvious, the chinook that were planted found a way to migrate out of the lake, who would have guessed that chinook might not just hang out and chill in the lake...:lol:
 

Throbbit _Shane

Well-known member
Odfw is struggling for funds but here they are wasting them once again. Tiger trout were stocked about 4 years ago in Fish Lake to combat the chub problem. Not one mention about that in the article. Want to know an easy and cheap solution to this non native fishery? Bass! Truck in some bass from Davis lake. No need to buy them and wait for them to get to a size to eat chubs. Simple to me.


Sent from my RCT6773W22B using Tapatalk
 

GungasUncle

Well-known member
That would be an interesting fishery in Diamond for sure with the clear water in that lake. But I'm all for Tiger Trout, Brown Trout, or anything else besides rainbows just for the sake of variety. This might nudge me into dragging the family down there this year, it's been far too many years since I was there. We used to go there every year when I was a kid.
 
Tiger trout are sterile, therefore they have no purpose to spawn... No reason to leave the food abundant lake. Other plants left and used the creek for natural desires to spawn.
 

jamisonace

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It was a joke. It's plain silly to think that two different organisms could be called GMO just because they had genetic traits modified to produce a third, very different organism.


nope. Tiger Trout are "a sterile, intergeneric hybrid of the brown trout (Salmo trutta) and the brook trout (Salvelinus fontinalis). It is an anomaly (rare but occurs) in the wild, with the brook trout having 84 chromosomes and the brown trout 80. Records show instances as far back as 1944."

https://en.wikipedia.org/wiki/Tiger_trout
 

EOBOY

Well-known member
nope. Tiger Trout are "a sterile, intergeneric hybrid of the brown trout (Salmo trutta) and the brook trout (Salvelinus fontinalis). It is an anomaly (rare but occurs) in the wild, with the brook trout having 84 chromosomes and the brown trout 80. Records show instances as far back as 1944."

https://en.wikipedia.org/wiki/Tiger_trout

I've caught a lot of tigers in EO ponds, their a good fighter and when they get big their mouth looks like a chum. Well almost:yikes:
 

rogerdodger

Moderator
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It was a joke. It's plain silly to think that two different organisms could be called GMO just because they had genetic traits modified to produce a third, very different organism.

sorry I missed your joke, is there someone calling a simple 'hybrid' a 'GMO'?, I didn't see that in the thread...

GMOs are lab created things, plants or animals, usually produced through a process of gene splicing and substitution to modify some of their traits in a way that could never be done through natural reproduction or hybridization. The resulting gene modified organisms are not inherently good or bad; just not something that could occur naturally.

The gene modified fast growing Atlantic Salmon is a great example, not necessarily good or bad, just not possible through natural reproduction.
 

jamisonace

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I've noticed you've never been one to catch a joke.

Lighten up.

sorry I missed your joke, is there someone calling a simple 'hybrid' a 'GMO'?, I didn't see that in the thread...

GMOs are lab created things, plants or animals, usually produced through a process of gene splicing and substitution to modify some of their traits in a way that could never be done through natural reproduction or hybridization. The resulting gene modified organisms are not inherently good or bad; just not something that could occur naturally.

The gene modified fast growing Atlantic Salmon is a great example, not necessarily good or bad, just not possible through natural reproduction.
 

jamisonace

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Neither. Just an observation. My apologies for coming off ornery. I just figured that my comment was so ridiculous that it barely warranted a thought let alone a thread derail. No biggie.

Oh and my dry, sarcastic humor doesn't lend itself well to emoticons. :) LOL

Hugs?

so is that a joke or insult? lol

most of us put a smiley face or LOL after a 'joke' that some people viewing the forum might take as a serious comment.
 

rogerdodger

Moderator
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Neither. Just an observation. My apologies for coming off ornery. I just figured that my comment was so ridiculous that it barely warranted a thought let alone a thread derail. No biggie.

Oh and my dry, sarcastic humor doesn't lend itself well to emoticons. :) LOL

Hugs?

yes, Hugs..
 

Admin

Admin
Just stumbled upon thin 4 years old thread and wonder how this tiger trout vs tui chub story ended?
As usual, when humans "manage environment"? Millions were spent and the population of chub doubled up? )
 
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