Results 41 to 50 of about 2,830 (222)

Dynamic coastal pelagic habitat drives rapid changes in growth and condition of juvenile sockeye salmon (Oncorhynchus nerka) during early marine migration

open access: yesFACETS, 2022
Migrating marine taxa encounter diverse habitats that differ environmentally and in foraging conditions over a range of spatial scales. We examined body (RNA/DNA, length-weight residuals) and nutritional (fatty acid composition) condition of juvenile ...
Jessica Garzke   +8 more
doaj   +1 more source

Sockeye salmon of Russian origin: what can fishermen сount on?

open access: yesИзвестия ТИНРО, 2023
Information on dynamics of abundance for sockeye salmon of Russian origin is presented, with assumptions on prospects of this species fishery in the future decade. The average annual catch in the period from 1907 to 2022 was about 27 thousand tons.
A. N. Makoedov, A. A. Makoedov
doaj   +1 more source

Coliform Flora of Migrating Sockeye Salmon (Oncorhynchus nerka)

open access: yes, 1974
The coliform flora of migrating sockeye salmon (Oncorhynchus nerka) was examined at two marine and one freshwater location. Enterobacter species accounted for approximately 50% of all isolates; the remaining isolates were divided almost equally between ...
G. A. Strasdine, Lyn Dubetz
core   +1 more source

Recent ecological divergence despite migration in sockeye salmon (Oncorhynchus nerka). [PDF]

open access: yesEvolution, 2010
Ecological divergence may result when populations experience different selection regimes, but there is considerable discussion about the role of migration at the beginning stages of divergence before reproductive isolating mechanisms have evolved.
Pavey SA, Nielsen JL, Hamon TR.
europepmc   +3 more sources

Under-Ice Diel Vertical Migrations of Oncorhynchus nerka and Their Zooplankton Prey

open access: yes, 1999
We used stationary hydroacoustics and measures of environmental conditions (water temperature, dissolved oxygen, light levels, and zooplankton) to determine what factors, foraging or predation risk, influenced diel vertical migrations of Oncorhynchus ...
Wurtsbaugh, Wayne A.   +2 more
core   +1 more source

Olfactory responses to natal stream water in sockeye salmon by BOLD fMRI. [PDF]

open access: yesPLoS ONE, 2011
Many studies have shown that juvenile salmon imprint olfactory memory of natal stream odors during downstream migration, and adults recall this stream-specific odor information to discriminate their natal stream during upstream migration for spawning ...
Hiroshi Bandoh   +2 more
doaj   +1 more source

Adaptive and Neutral Polymorphisms of the Onne-DAB Gene from the Major Histocompatibility Complex (MHC) in Sockeye Salmon Populations on the Asian Range

open access: yesDiversity, 2023
The variability of an MHC complex gene in sockeye salmon populations throughout the Asian range was studied to identify “footprints” indicative of pathogen-mediated selection and neutral demographic processes that have influenced these populations in ...
Anastasia M. Khrustaleva
doaj   +1 more source

Prey group cohesion mediates the outcome of predator–prey interactions under artificial lighting

open access: yesFunctional Ecology, EarlyView.
Read the free Plain Language Summary for this article on the Journal blog. Abstract The highest rates of piscivorous predation in the field have been recorded during crepuscular light levels associated with sunrise and sunset or artificial lighting at night (ALAN).
Jessica R. Frey   +5 more
wiley   +1 more source

The complete mitochondrial genome sequencing of Anisakis simplex isolated from Anoplopoma fimbria

open access: yesMitochondrial DNA. Part B. Resources, 2019
In this study, zoonotic Anisakis simplex was isolated and identified from the outermost layer of the stomach of diseased Anoplopoma fimbria at an industrial farm in Liaoning, North China (122.1842 E, 39.2616 N). With the completion of A.
Maolin Wang   +4 more
doaj   +1 more source

Impact of Environmental Conditions on the Spawning Migration of Sea Trout (Salmo trutta L.) in Two Large, Sub‐Arctic River Systems

open access: yesFisheries Management and Ecology, EarlyView.
ABSTRACT The global decline in salmonid stocks has increased the need for knowledge of local adaptations and life history strategies of salmonids. In this study, we used radio‐telemetry tracking data from sea trout populations in two large high‐latitude rivers to model upstream spawning migration speed of trout in response to prevailing environmental ...
L. Lähteenmäki   +8 more
wiley   +1 more source

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