I was pretty surprised to see a headline like this.
http://ijpr.org/post...vocates-banquet
Sportman Group To Picket Native Fish Advocates' Banquet
Started by
Guest_BenCantrell_*
, Apr 12 2014 09:53 AM
11 replies to this topic
#3
mattknepley
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Posted 12 April 2014 - 02:24 PM
Should-be allies to determined to each have it their own exact way; we divided and conquered ourselves a little bit more...
Matt Knepley
"No thanks, a third of a gopher would merely arouse my appetite..."
"No thanks, a third of a gopher would merely arouse my appetite..."
#7
Guest_Subrosa_*
Guest_Subrosa_*
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Posted 13 April 2014 - 08:06 AM
If wild stocks are increased to carrying levels what will the fishermen have to complain about? I guess like here in PA they'll complain that the wild ones are too hard to catch. If stocking continues wild populations will absolutely be affected. Seems an easy call.
#8
Guest_centrarchid_*
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Posted 13 April 2014 - 08:23 AM
Sterile fish I work with are sterile. More efficient sterilization and quality control needed where not. Such efforts increase production cost.
Wild stocks at carrying capacity does not mean more harvestable biomass when stock has been selected to avoid lures. Stocking on top of such stocks can result in more fishable populations where stocked fish are preferentially harvested.
Wild stocks at carrying capacity does not mean more harvestable biomass when stock has been selected to avoid lures. Stocking on top of such stocks can result in more fishable populations where stocked fish are preferentially harvested.
#11
Guest_don212_*
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Posted 19 April 2014 - 08:34 PM
just saw a story on Nature about the tragic condition of western salmon stocks, highly critical of stocking attempts, which are hugely expensive, and ineffective, habitat replacement is necessary especially dam elimination, however, fisheries apparently does not breed salmon , they harvest eggs and sperm from wild stock then release the resulting juveniles, is that not tu?
#12
Guest_Gavinswildlife_*
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Posted 19 April 2014 - 09:33 PM
It is true that they get their salmon from wild stocks.
There is a good reason for this. If you take wild salmon or anadromous trout, and raise them in hatcheries, they will have a good number return to the stream they were released in. But if you raise many generations in a hatchery, they loose wild characteristics like being anadromous.
For example, ohio at one point raised its own steelhead at the London hatchery. They had only a small number come back each fall. More recently, ohio gets eggs from michigan's little manistee river. 4 little manistees come back for every one London.
Habitat restoration is always a good thing.
There is a good reason for this. If you take wild salmon or anadromous trout, and raise them in hatcheries, they will have a good number return to the stream they were released in. But if you raise many generations in a hatchery, they loose wild characteristics like being anadromous.
For example, ohio at one point raised its own steelhead at the London hatchery. They had only a small number come back each fall. More recently, ohio gets eggs from michigan's little manistee river. 4 little manistees come back for every one London.
Habitat restoration is always a good thing.
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