Results 41 to 50 of about 2,748 (167)

Expression of corticoid‐regulatory genes in the gills of Atlantic salmon (Salmo salar) parr and smolt and during salinity acclimation

Journal of Fish Biology, EarlyView.
Abstract In teleost fishes, cortisol is the major corticoid and has both glucocorticoid and mineralocorticoid actions. However, how fish tissues discriminate between these distinct corticosteroid actions is unclear. In mammals, the major factors responsible for intracellular corticosteroid regulation are glucocorticoid receptors (grs) and the ...
Makoto Kusakabe, Takashi Yada, Graham Young, Amy M. Regish, Stephen D. McCormick   +4 more
wiley   +1 more source

Analysis of changes in biological parameters and stocks of coho salmon Oncorhynchus kisutch in the Bolshaya River (western Kamchatka) in 1941–2023

Известия ТИНРО
Changes in the spawning part of the Bolshaya River population of coho salmon are considered for 1941–2023. Long-term trends are revealed for the most important biological parameters of adults, in particular, decreasing in size, weight (except of late ...
O. M. Zaporozhets, G. V. Zaporozhets, A. M. Biryukov   +2 more
doaj   +1 more source

Time-delayed subsidies: interspecies population effects in salmon. [PDF]

PLoS ONE, 2014
Cross-boundary nutrient inputs can enhance and sustain populations of organisms in nutrient-poor recipient ecosystems. For example, Pacific salmon (Oncorhynchus spp.) can deliver large amounts of marine-derived nutrients to freshwater ecosystems through ...
Michelle C Nelson, John D Reynolds
doaj   +1 more source

Historical case study of a transfer experiment that demonstrated the importance of the estuarine ecosystem for the survival of Chinook salmon (Oncorhynchus tshawytscha) at the Campbell River estuary, British Columbia, Canada

Journal of Fish Biology, EarlyView.
Abstract Estuary dependence to the survival of Chinook salmon was investigated at the Campbell River estuary, British Columbia, Canada. Replicate batches of marked smolts were transferred from a hatchery and released in 1983, 1984 and 1985 at four ecosystems, two that ensured estuarine experience (river, estuary) and two seawards of the estuary ...
Colin D. Levings, J. Steve Macdonald
wiley   +1 more source

Conservation and management implications of genetic and geometric scale variation in the ancient fish giant featherback (Chitala lopis)

Journal of Fish Biology, EarlyView.
Abstract Giant featherback (Chitala lopis) is an ancient species of freshwater fish considered globally extinct until extant populations were re‐discovered in the Sundaland region of Indonesia in 2022. To improve management of the remaining populations, this study used genomic DNA and landmark‐based geometric morphometric analyses of fish scales to ...
Boby Muslimin, Gunawan Muhammad, Arif Wibowo, Kurniawan Kurniawan, Vitas Atmadi Prakoso, Rendy Ginanjar, Mochammad Zamroni, Bayu Kreshna Adhitya Sumarto, Septiana Sri Astuti, Deni Irawan, Agus Priyadi, Mirna Dwirastina, Siti Rachmi Indahsari, Haryono Haryono, Hadi Dahruddin, Indah Lestari, Flandrianto Sih Palimirmo, Nunak Nafiqoh, Mochamad Chandra Wirawan Arief, Asep Sahidin, Oriza Savitri Ariantie, Indah Anggraini Yusanti, Sujaka Nugraha, Ivor G. Stuart   +23 more
wiley   +1 more source

Take my breath away: Defining the oxygen saturation threshold for fish cortisol stress response

Journal of Fish Biology, EarlyView.
Abstract Human activities are affecting the number, size and severity of hypoxic zones in aquatic ecosystems. As oxygen is one of the most important abiotic factors affecting fish biology, exposure to low levels of dissolved oxygen may lead to a reduction in fitness.
Sébastien Alfonso, Benjamin Geffroy, Pierluigi Carbonara, Lola Toomey, Eduardo Bessa   +4 more
wiley   +1 more source

The Fate of Coho Salmon Nomads: The Story of an Estuarine-Rearing Strategy Promoting Resilience

Ecology and Society, 2009
The downstream movement of coho salmon nomads (age 0), conventionally considered surplus fry, has been an accepted characteristic of juvenile coho salmon for the past 40 to 50 yr.
K V. Koski
doaj   +1 more source

Migration in drought: Receding streams contract the seaward migration window of endangered salmon

Ecosphere, 2022
Prolonged migration windows buffer migratory animal populations against uncertainty in resource availability. Understanding how intensifying droughts from climate change influence the migration window is critical for biodiversity conservation in a ...
Brian Kastl, Mariska Obedzinski, Stephanie M. Carlson, William T. Boucher, Theodore E. Grantham   +4 more
doaj   +1 more source

Evaluating Coexistence of Fish Species with Coastal Cutthroat Trout in Low Order Streams of Western Oregon and Washington, USA

Fishes, 2021
When multiple species of fish coexist there are a host of potential ways through which they may interact, yet there is often a strong focus on studies of single species without considering these interactions.
Kyle D. Martens, Jason Dunham
doaj   +1 more source

Expert‐Based Prioritization of Control Measures for Salmonid Rickettsial Septicemia in Chilean Salmon Aquaculture

Journal of Fish Diseases, EarlyView.
ABSTRACT Piscirickettsiosis (SRS) remains the main infectious disease affecting salmon aquaculture in Chile. This study evaluated expert perceptions of the effectiveness of SRS control measures and the level of agreement among industry professionals.
Patricio Bustos, Benjamín Diethelm‐Varela, Andrés Riofrio, Marcos Mancilla, Fernando O. Mardones   +4 more
wiley   +1 more source