Results 1 to 10 of about 1,835 (185)

Regional-Scale Declines in Productivity of Pink and Chum Salmon Stocks in Western North America. [PDF]

PLoS ONE, 2016
Sockeye salmon (Oncorhynchus nerka) stocks throughout the southern part of their North American range have experienced declines in productivity over the past two decades. In this study, we tested the hypothesis that pink (O. gorbuscha) and chum (O. keta)
Michael J Malick, Sean P Cox
doaj   +2 more sources

Jellyfish in Pacific salmon food

Известия ТИНРО, 2022
Ctenophores, hydroid jellyfish, appendicularians, salpas, and the pteropoda mollusk Clione limacina, conditionally combined into the group of “jellyfish”, are found in the food of all Pacific salmon — chum salmon, pink salmon, sockeye salmon, coho salmon
A. F. Volkov
doaj   +1 more source

Spatiotemporal distribution of Ceratonova shasta in the lower Columbia River Basin and effects of exposure on survival of juvenile chum salmon Oncorhynchus keta.

PLoS ONE, 2022
In the Columbia River Basin (CRB), USA, anthropogenic factors ranging from dam construction to land use changes have modified riverine flow and temperature regimes and degraded salmon habitat.
Kristen Homel, Julie D Alexander
doaj   +1 more source

Features of exploitation of high-number industrial chum salmon Oncorhynchus keta on the example of Lake Tunaicha (south-eastern Sakhalin): problems and proposed solutions

Известия ТИНРО, 2022
In Lake Tunaicha mainly artificial reproduction of chum salmon is carried out. The escapement is at a high level — more than 1 million fish. Significant pre-settlement mortality of chum salmon has been regularly observed in the lake basin over the last ...
Y. I. Ignatyev, N. V. Kolpakov, V. D. Nikitin, T. G. Koreneva   +3 more
doaj   +1 more source

On state of commercial herd of chum salmon Oncorhynchus keta and forecasting its abundance at Iturup Island

Известия ТИНРО, 2023
Population dynamics and size-age structure are analyzed for the chum salmon herd formed in the Prostor and Kurilsky Bays of Iturup Island (Kuril Islands). Release of chum juveniles into the waters of the bays increased from 10.7.106 ind. in 1996 to 197.6.
A. N. Elnikov, O. V. Zelennikov
doaj   +1 more source

Detecting spawning of threatened chum salmon Oncorhynchus keta over a large spatial extent using eDNA sampling: Opportunities and considerations for monitoring recovery

Environmental DNA, 2021
Over the last century, anthropogenic activities have caused substantial declines in the abundance of chum salmon (Oncorhynchus keta) throughout their range in western North America.
Kristen M. Homel, Thomas W. Franklin, Kellie J. Carim, Kevin S. McKelvey, Joseph C. Dysthe, Michael K. Young   +5 more
doaj   +1 more source

Results of otolith marking of chum salmon Oncorhynchus keta for testing efficiency of their artificial reproduction

Известия ТИНРО, 2023
Otoliths from 3473 chum salmon spawners caught at the mouth of Naiba River and at Bereznyakovsky and Sokolovsky salmon hatcheries in 2013–2019 are investigated.
A. A. Vorozhtsova, M. S. Miakishev, O. V. Zelennikov   +2 more
doaj   +1 more source

The Migratory Biology and Feeding Habits of Downstream-Migrating Juvenile Chum Salmon Oncorhynchus keta in the Amur River of Northeast China

Fishes, 2023
The size of chum salmon juveniles is crucial to their survival. In order to understand the population status and migration patterns of juvenile chum salmon in the waters of the Amur River in China, this study investigated the status of juvenile chum ...
Jilong Wang, Peilun Li, Wei Liu, Wanqiao Lu, Fujiang Tang   +4 more
doaj   +1 more source

Dependence of progeny abundance for summer chum salmon (Oncorhynchys keta) in the Amur River on the parents abundance

Известия ТИНРО, 2016
For almost the century the landings of summer chum salmon in the Amur were approximately in 5 times lower that the landings of fall chum salmon, in spite on almost the same fishing efforts.
Vladimir I. Ostrovsky, Olga V. Vershinina, Andrey P. Shmigirilov   +2 more
doaj   +1 more source

Feeding of mass fish species by natural and farmed juveniles of pacific salmons on example of the Obutonai River (Sakhalin Island)

Известия ТИНРО, 2022
Feeding of mass fish species caught in the Obutonai River (Sakhalin, Nevelsk district) was examined in May-July 2021, in the time of downstream migration of natural pink salmon Oncorhynchus gorbuscha juveniles and release of chum salmon O. keta juveniles
O. V. Zelennikov, D. V. Baginsky, P. A. Sedunov   +2 more
doaj   +1 more source