Post by Shaq on Jun 11, 2013 13:43:35 GMT
In speaking with Fran verdoliva about getting permits for Spey Nation, we had a very interesting discussion about wild fish in the Salmon. Specifically the results of the fin clipping survey for Kings. It opened my eyes and prompted me to want to learn more. Check out the results of all the fish surveys for Lake Ontario this year.
www.dec.ny.gov/docs/fish_marine_pdf/lou2012hilights.pdf
Chinook Salmon Marking Projects
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In 2008, NYSDEC purchased an automated fish marking trailer (AutoFish) which is capable of adipose clipping and/or applying coded wire tags (CWTs) to salmon and trout at high speed and accuracy. To determine the proportions of wild and hatchery Chinook salmon in Lake Ontario, all Chinook salmon stocked by New York and Ontario from 2008-2011 were marked with an adipose fin clip. In 2012, preliminary results indicated that 56% of the Chinook salmon harvested in New York waters of Lake Ontario were wild. The proportion of wild Chinook salmon observed in most New York tributaries varied by fish age but was generally low (i.e., 5-20%), except in the Salmon River, where approximately 70% of angler-caught Chinook salmon were wild.
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To determine the degree of homing and straying to the NYSDEC Salmon River Hatchery (SRH), all Chinook Salmon stocked at the Salmon River received adipose fin clips and CWTs from 2008-2010. Straying of fish from other sites to the SRH from 2009-2012 has varied with year class and age, but has been generally low with straying rates of 6-12%.
www.dec.ny.gov/docs/fish_marine_pdf/lou2012hilights.pdf
Chinook Salmon Marking Projects
•
In 2008, NYSDEC purchased an automated fish marking trailer (AutoFish) which is capable of adipose clipping and/or applying coded wire tags (CWTs) to salmon and trout at high speed and accuracy. To determine the proportions of wild and hatchery Chinook salmon in Lake Ontario, all Chinook salmon stocked by New York and Ontario from 2008-2011 were marked with an adipose fin clip. In 2012, preliminary results indicated that 56% of the Chinook salmon harvested in New York waters of Lake Ontario were wild. The proportion of wild Chinook salmon observed in most New York tributaries varied by fish age but was generally low (i.e., 5-20%), except in the Salmon River, where approximately 70% of angler-caught Chinook salmon were wild.
•
To determine the degree of homing and straying to the NYSDEC Salmon River Hatchery (SRH), all Chinook Salmon stocked at the Salmon River received adipose fin clips and CWTs from 2008-2010. Straying of fish from other sites to the SRH from 2009-2012 has varied with year class and age, but has been generally low with straying rates of 6-12%.
