Triploids as table fare

[Matt]

Recently fished Twin Lakes in Ferry county over the long weekend and caught a triploid planted over from Rufus Woods that was about 6 pounds. We kept it and barbecued it up and man, lemme tell you, GREAT eating fish!! Far better than the trips we get over on this side of the mountains. I think the fact that these fish are raised in deep net pens in cold river water plays a key role in keeping them firm and delicious, but that would just be my opinion. On the BBQ, in my opinion, this fish ate better than salmon out of the salt. It was damn good and reminded me of the delicate taste of kokanee quite a bit.

Opinions?

[Gringo Pescador]

The trips I have had out of Rufus were also the best I have tasted anywhere. Wish I could get over there more often!

[G-Man]

That is some awesome color for a trip! Then again I guess it wasn't your average State planted trip. Diet and environment do make a difference in flesh color and firmness so I am not surprised. I try not to keep planted trout unless they are holdovers, the family and I just don't seem to like the way they taste.

[flyfisher31]

might of been a brooder not a triploid. the fis dont live as bad of lives as peoplethink they are raised in river and can eat the bugs thaat come down it. next time though gut it then descale it if you like the skin stuff salsa or whatever you like and wrap in tinfoil yumyum

[mav186]

Hey Matt,
My understanding is that these genetically engineered trout were specifically developed for table fare at fine dining establishments.

[flyfisher31]

they aren't genetically enginneered at all actaully. they heat the eggs in water by raising the temp of the water really fast. and pretty much they get three sex chromosomes instaed of two. they mainly use them to so they dont breed with the native population. a big problem with cutthroats and rainbows and brooks and browns

[Matt]

they aren't genetically enginneered at all actaully. they heat the eggs in water by raising the temp of the water really fast. and pretty much they get three sex chromosomes instaed of two. they mainly use them to so they dont breed with the native population. a big problem with cutthroats and rainbows and brooks and browns

Flyfisher is essentially right. They adjust the incubation temperature by about 1 degree Fahrenheit at a crucial time during the incubation period and cause otherwise normal rainbow trout to become sterile upon birth. The big bonus in doing this is that no energy is spent on roe production and 100% of the fish's energy is spent on finding food and growing which is why triploids grow to such astronomical proportions.

[Anonymous]

they aren't genetically enginneered at all actaully. they heat the eggs in water by raising the temp of the water really fast. and pretty much they get three sex chromosomes instaed of two. they mainly use them to so they dont breed with the native population. a big problem with cutthroats and rainbows and brooks and browns

Flyfisher is essentially right. They adjust the incubation temperature by about 1 degree Fahrenheit at a crucial time during the incubation period and cause otherwise normal rainbow trout to become sterile upon birth. The big bonus in doing this is that no energy is spent on roe production and 100% of the fish's energy is spent on finding food and growing which is why triploids grow to such astronomical proportions.

Matt is also correct...They can also add the extra chromosome by increasing pressure like they do at the Trout Lodge Hatchery.

['OL GREY DOG]

NICE knife work on the fillet..not your 1st time ??..
LOLOL

[mav186]

they aren't genetically enginneered at all actaully. they heat the eggs in water by raising the temp of the water really fast. and pretty much they get three sex chromosomes instaed of two. they mainly use them to so they dont breed with the native population. a big problem with cutthroats and rainbows and brooks and browns

I don't care how they do it...they're great in my tummy!

[gpc]

Rufus triploids are the best, better than any other silver fish out there. And maybe better than any fish out there

[Bodofish]

Yes they are! Just ate a nice one myself. As far as how they're done, it was my understanding that the eggs were put in a hyperbaric chamber and put under high pressure for a period of time to force the chromosome change. Then put in a warm water bath for a while to sterilize them. Could be right, could be wrong but a lot more plausible than cooking them at 1 degree above ambient. The natural ambient temp fluctuates more than 1 degree. Pretty intresting is the fact that all triploids are female and a small number of diploids, males ("by-product") are created by the process. Apparently a small percentage of both aren't sterile. I know one fish I caught right at the pens was a male with fully mature gonads. He weighed in at 10.5. Wild or just that small percentage?

[bionic_one]

Information on how Trout Lodge does it can be found at the links below. I think they're the largest provider for our state, but that doesn't mean they make the ones in Rufus.

Overview of Triploid program

Technical data is found if you scroll down:

Technical PDF link

It seems all of you are correct to some extent:

By applying cold- or heatshocks, high pressures, or certain chemical treatments this second division of meiosis is prevented and the “extra” set of maternal chromosomes is retained. The resulting embryos now have one paternal and two maternal chromosome sets and are, therefore, triploid.

[Bodofish]

Now that was some good reading. As I'm sitting practicing perfection loops.......