--some questions
--why was the predicted return much lower
--where do these fish go that ours don't
--is this just a case of over escapement and hatchery supplement which will result in a smaller future run and continued boom or bust population cycles.
--my gut feeling is that this is not really a "good news" story
http://www.npafc.org/new/index.htmlhttp://www.npafc.org/new/publications/Documents/PDF%202016/1627(Canada).pdf 2106"Stock composition of Bering Sea samples
Alaskan-origin Sockeye Salmon were the most abundant in the annual catch of
immature individuals in the central Bering Sea. Bristol Bay origin immature Sockeye
Salmon comprised 73.6% of all Sockeye Salmon caught during the 2015 cruise, with
Alaskan-origin salmon comprising 90.7% of the catch (Table 1). Canadian-origin
Sockeye Salmon accounted for 8.1% of the catch during 2015. Russian-origin salmon
accounted for 1.0% of the catch during 2015. Sockeye Salmon from Bristol Bay
dominated the catch of Alaskan-origin salmon, with those from the Egegik River
drainage the largest contributor to the catch, with an annual contribution of 21.8% of
individuals estimated to be of Egegik River origin (Table 1). Sockeye Salmon from the
Kvichak River drainage were estimated to be the next most important contributor to the
catch, comprising 18.5% of the salmon sampled. Sockeye Salmon from the Nushagak
River drainage were estimated to comprise 10.1% of the sample. Sockeye Salmon from
the Wood River drainage were estimated to comprise 9.4% of immature Sockeye Salmon
sampled during the cruise, and those from Kodiak Island 7.8% and the Chignik River
5.8% of the individuals sampled (Table 1).
Canadian-origin salmon were estimated to originate primarily from the Skeena
River (Babine Lake exclusively) and river drainages to the north (Table 1). The
contribution from the Fraser River was identified as individuals originating from Chilko
Lake.
Russian-origin Sockeye Salmon caught in the central Bering Sea during 2015
comprised only 1% of the immature Sockeye Salmon sampled (Table 1)."
http://www.npafc.org/new/publications/Documents/PDF%202012/1389(Canada).pdf 2012Stock composition of Bering Sea samples
Alaskan-origin sockeye salmon were the most abundant in the catch of 177 immature individuals in the central Bering Sea, comprising 86.1% of all sockeye salmon caught. Russian-origin salmon accounted for 12.1% of the catch, while Canadian-origin sockeye salmon accounted for 1.2% of the catch. Sockeye salmon from Bristol Bay dominated the catch of Alaskan-origin salmon, with those from the Naknek River drainage the largest contributor to the catch, with 23.5% of individuals estimated to be of Naknek River origin (Table 1). Age composition of the Naknek River immature sockeye salmon was 25.0% age 1.1, 38.6% age 1.2, 27.3% age 2.1, and 9.1% age 2.2. Sockeye salmon from the Kvichak River drainage were estimated to be the next most important contributor to the catch, comprising 13.7% of the salmon sampled. Sockeye salmon from the Nushagak River drainage were estimated to comprise 10.4% of the sample. Sockeye salmon from the Ugashik River drainage and Wood River drainage were also identified as important contributors to the catch. One age 1.2 individual was estimated to have originated from Lake Washington in Washington State.
Russian-origin sockeye salmon caught in the central Bering Sea in 2011 were estimated to originate primarily from Kuril Lake (5.3%), Karaginsky Bay (2.2%), and Kamchatka River (2.0%) (Table 1). Age composition of the Kuril Lake individuals was primarily age 1.2, with one individual estimated as age 1.1 and one individual as age 2.2.
Canadian-origin salmon were estimated to originate from the Skeena River (0.6%, one age 1.1 individual) and the Stikine River (0.6%, one age 1.1 individual) (Table 1).
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Topic: Bristol Bay salmon run almost too big to handle (Read 2630 times)