Results 21 to 30 of about 16,436 (269)

Origin and distribution of chum salmon Oncorhynchus keta stocks in the western Bering Sea and North-West Pacific in 2009 and 2010

open access: yesИзвестия ТИНРО, 2014
Intraspecific structure of feeding and prespawning aggregations of chum salmon in the western Bering Sea in September-October of 2009 and 2010 and in the North-West Pacific in June-July of 2009 and 2010 is investigated on the data of trawl surveys ...
Alexander V. Bugaev   +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)

open access: yesИзвестия 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   +2 more
doaj   +1 more source

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

open access: yesИзвестия 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   +2 more
doaj   +1 more source

Meta-Analysis of Salmon Trophic Ecology Reveals Spatial and Interspecies Dynamics Across the North Pacific Ocean

open access: yesFrontiers in Marine Science, 2021
We examined spatial patterns in diet, trophic niche width and niche overlap for chum, pink and sockeye salmon across the North Pacific during 1959–1969. This is a baseline period before major hatchery enhancement occurred coinciding with a negative phase
Caroline Graham   +7 more
doaj   +1 more source

Tryptophan requirement of chum salmon fry.

open access: yesNIPPON SUISAN GAKKAISHI, 1985
Quantitative tryptophan requirement of chum salmon Oncorhynchus keta fry was determined by feeding purified diets containing crystalline L-amino acids and 5% casein as nitrogen sources for 4 weeks. The basal diet was isonitrogenously supplemented with graded levels (0.05, 0.08, 0. 16, 0.24, 0.32, 0.40, 0.48 and 0.56% in diet) of tryptophan by adjusting
Toshio AKIYAMA   +3 more
openaire   +2 more sources

Factors controlling the year-classes strength for chum salmon Oncorhynchus keta in the Okhotsk district

open access: yesИзвестия ТИНРО, 2023
A quasi-cyclicity associated with variability of environmental conditions is detected for the regression residuals of the stock-recruitment model for chum salmon Oncorhynchus keta in the Okhotsk district, described by Ricker’s equation.
V. I. Ostrovsky
doaj   +1 more source

Allee Effects May Slow the Spread of Parasites in a Coastal Marine Ecosystem [PDF]

open access: yes, 2011
Allee effects are thought to mediate the dynamics of population colonization, particularly for invasive species. However, Allee effects acting on parasites have rarely been considered in the analogous process of infectious disease establishment and ...
Connors, B. M.   +3 more
core   +1 more source

Characteristics of spawners of chum salmon Oncorhynchus keta from commercial stock of Iturup Island

open access: yesИзвестия ТИНРО, 2023
Chum salmon spawners returned for spawning in the rivers of Prostor and Kurilsky Bays on Iturup Island (Kuril Islands, Sakhalin Region) were examined in the period from September 19 to November 4, 2022. Both females and males had mostly the age 3+ (68.8 %
A. N. Elnikov, O. V. Zelennikov
doaj   +1 more source

Comparative studies of effect of compound feeds on fish-breeding and biochemical properties of juvenile chum salmon

open access: yesИзвестия ТИНРО, 2023
Effectiveness of starter fodders is examined for the low-temperature rearing pools in the salmon fish hatchery Savushkina (Severo-Kurilsk). In May 2022, the experimental compound feed developed in TINRO was compared with the control fodder Aller Aqua ...
A. N. Bashtovoy   +4 more
doaj   +1 more source

Landscape Structure and Species Interactions Drive the Distribution of Salmon Carcasses in Coastal Watersheds

open access: yesFrontiers in Ecology and Evolution, 2019
The disproportionate effects of some species can drive ecosystem processes and shape communities. This study investigates how distributions of spawning Pacific salmon within streams, salmon consumers, and the surrounding landscape mediate the ...
Joel M. S. Harding   +11 more
doaj   +1 more source

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