Results 21 to 30 of about 14,560 (226)

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

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

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

Freshwater feeding by adult chum salmon Oncorhynchus keta in the Mackenzie River, Northwest Territories

open access: yesFrontiers in Ecology and Evolution
As distributional shifts of marine species into the Arctic become more frequent, these range-expanding individuals may exhibit unique traits that facilitate survival and establishment in new places.
Karen M. Dunmall   +4 more
doaj   +1 more source

BASIS FOR SELECTION OF RIVERS FOR MONITORING ON THE STOCKS OF CHUM AND PINK SALMON IN THE AMUR RIVER

open access: yesИзвестия ТИНРО, 2019
The monitoring of chum and pink salmon escapement to spawning grounds in the Amur River basin was stopped in 2009. To start it again, a proved choice of the rivers is necessary for adequate controlling of these species number, by the spawning habitats of
S. F. Zolotukhin
doaj   +1 more source

The Expression of Leptin, Estrogen Receptors, and Vitellogenin mRNAs in Migrating Female Chum Salmon, : The Effects of Hypo-osmotic Environmental Changes [PDF]

open access: yesAsian-Australasian Journal of Animal Sciences, 2014
Leptin plays an important role in energy homeostasis and reproductive function in fish, especially in reproduction. Migrating fish, such as salmonoids, are affected by external environmental factors, and salinity changes are a particularly important ...
Young Jae Choi   +3 more
doaj   +1 more source

State of stocks of pacific salmons in the basin of Avacha Bay (southeastern Kamchatka) in 1985–2019

open access: yesИзвестия ТИНРО, 2020
State of pacific salmon stocks is considered for the basins of the Avacha and Paratunka Rivers in 1985–2019. Significant decline of the stocks is noted that is associated with anthropogenic impact growth. Total number of producers for five salmon species
G. V. Zaporozhets, O. M. Zaporozhets
doaj   +1 more source

Climate vulnerability assessment for Pacific salmon and steelhead in the California Current Large Marine Ecosystem. [PDF]

open access: yes, 2019
Major ecological realignments are already occurring in response to climate change. To be successful, conservation strategies now need to account for geographical patterns in traits sensitive to climate change, as well as climate threats to species-level ...
Beechie, Tim   +24 more
core   +1 more source

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