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Topic: Yellow Lake - PERCH |
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pajeff
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Bad news from here. My catch was 2 rainbow and 4 perch. Up till now I have only ever caught 1 perch, and I guess even that was one too many. It is a shame that this lake will have to be poisoned as kokanee have been introduced recently.
I would like to know of any other recent experience of this lake and any prediction of the impending demise.
And before you ask, we left a trail of dead perch.
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pajeff
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Sorry to reply to my own post but I read how estrogen can reduce breeding fish populations. I sent an email to the Department of Fisheries:
I report, with some concern, an increase in the numbers of perch in Yellow Lake near Penticton B.C.. I also read a science report about the intoduction of estrogen to a lake that quicky and dramatically reduced the fish population. Given that Yellow Lake is stocked with Trout and now more recently, Kokanee, the only fish likely to suffer would be those that rely on breeding, namely the Perch. I am no scientist, but is this an idea worthy of some research, rather than poison the whole lake to get rid of the invasive fish.
What do you think?
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walleye76
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Totally agree! Perch are so tasty, Google "Lancaster perch recipe" and give that a try, it's some of the best you will try, quite similar to walleye (same family) in texture and flavor.
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pajeff
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Thank you for your off thread comments. Both Trout and Kokanee are not native to this lake, but it is stocked with both. It has never been stocked with Perch, so how did they get there. It could not be by folk taking fry from another lake to use as bait could it. That would be against the regulations would'nt it?
Perch will eventually take over the lake, as they did before, and the lake was poisoned and restocked with trout.
This is a trout lake for those that enjoy fishing for trout and we should keep it that way.
All that I am attempting to do is to suggest a way of keeping the Perch to a minimum without poisoning the lake.
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cagey
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I live by a lake that had the perch and bass poisoned. Hurray ! They had totally changed the ecology of the area. The birds have now returned as have the dragon flies and damsels, to list only the major changes you can see without looking very hard !
Kokanee don't do that and they taste great too. I was against the eradication but once they had done it everything changed really fast, Hope your idea works Jeff. Retononone is expensive but it only killed what it was supposed to. All the trout had already died. The turtles were not affected except they too are experiencing an increase with more food to eat. Keep the perch out of our waters. If you want to eat some go east !!!
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prunehands
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What would the estrogen do to other species besides perch?I have a hard time believing it wouldn't affect the breeding of other wildlife that live near or in the lake.
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cagey
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kokanee and trout may be non-native but they do not destroy the lake habitat. The fish that the gov't stocks the lakes with are sterile mostly. the perch on the other hand reproduce like crazy and eat every thing in site. believe me in the valley I live in had very few birds , the turtles were disappearing, there were no dragon flies left hardly nor damsels. now there are clouds of dragons, damsels, birds and turtles.
Hardly anyone was "for" poisoning the lake but now everyone would agree it was best to do it.
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pajeff
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I think the question is what would happen if it was poisoned, as it was before, and I think the answer is known to that one.
My request to the authorities is why not look at estrogen as an alternative, and pointed out that I was not a scientist.
However, your question is perfectly valid, but I am hoping it is the lesser of two evils.
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pajeff
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I am hoping you are right dt, but having gone from zero in 5 years to that ratio and I continue to catch them, the outlook is poor. I do not target them. I fly fish for trout and catch those greedy little devils.
Trout are by far a better fish to catch, they fight harder and longer.
This report is interesting and answers some questions:
http://www.holology.com/hormone.html
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prunehands
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Thanks for that link Jeff.I must admit I'm a little confused as to why though.I thought you were in favor of the estrogen treatment.Or were you still researching?
I'm going to re-read it,but it all looked like stuff we should't be meddling with.To me,it didn't sound like the article was in support of the lake experiment.
Like you said ,interesting.
I don't want to be growing a set of moobs from eating trout.lol
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pajeff
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Yes the article is about the dowside of estrogen, and other similar chemicals, but a little lateral thinking, in a controlled environment, could be used to control breeding species. One good thing I found was that the chemical bio degrades and will have no long lasting effect.
But leave it to the scientists, if I can ever get them interested.
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cagey
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Dump, the perch can reproduce to the point the trout starve. Our local lake had brookies and rainbow 3 years before they treated it. They did not find a single dead trout when they treated it. I caught a scrawny rainbow the day before they closed the lake to fishing (3 years before they treated it). Now the trout are huge because there is so much food without the perch. In some lakes they don't seem to have as much effect but I know first hand what a difference treating the lake made to the whole ecology of our valley.
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prunehands
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Was it rotenone ?Curious as to how the trout were not killed too.
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cagey
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it was rotenone. Sorry I was not more clear. The biologist said the trout had already died off as they found none. The perch ate everything. The young perch got right into the cat-tails feeding right to the shore. Bugs are normally safe there but not with the perch. They were so thick you could get 15 a minute if you could get the hook out and back in the water within 2 seconds !
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pajeff
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I had a discussion with my regional office. He thought my idea was interesting but unlikely to go anywhere. Also, rather surprising, rotenone is now "off the table"! What do we do now to get rid of unwanted Perch?
If this information is correct, and I have no reason to doubt it, we all need to know what will happen to our trout lakes. We could loose them all.
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cagey
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I wonder why it is off the table. when they used it here 4 yrs ago they said how wonderful it was. it worked .
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cagey
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no , I know my math. It took 2 seconds to hook and land the little buggers. I factored that in with the 2 second release requirement ! (lol)..........it wasn't even fun catching the little buggers there were so many !
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