Results 41 to 50 of about 3,214 (221)

Experimental Evidence for Mobilization of Mercury From the Eggshell by the Developing Embryo in an Avian Model Organism

Environmental Toxicology, EarlyView.
ABSTRACT Of the many pollutants wildlife is exposed to, mercury ranks among the most toxic. In birds, mercury does not only accumulate within generations, but also is transferred across generations via maternal offloading in eggs, with higher mercury concentrations found in shells of unhatched eggs.
Matteo Beccardi, Justine Bertram, Sandra Bouwhuis, Pablo Salmón, Peter J. Schupp, Oscar Vedder   +5 more
wiley   +1 more source

Hatchery supplementation provides a demographic boost but alters age composition of sockeye salmon in Auke Lake, Southeast Alaska

Evolutionary Applications
Evaluating salmon hatchery supplementation programs requires assessing not only program objectives but identifying potential risks to wild populations as well.
Megan V. McPhee, Patrick D. Barry, Chris Habicht, Scott C. Vulstek, Joshua R. Russell, William W. Smoker, John E. Joyce, Anthony J. Gharrett   +7 more
doaj   +1 more source

Initial responses of Chinook salmon (Oncorhynchus tshawytscha) and steelhead (Oncorhynchus mykiss) to removal of two dams on the Elwha River, Washington State, U.S.A.

Frontiers in Ecology and Evolution
Large dam removal is being used to restore river systems, but questions remain regarding their outcomes. We examine how the removal of two large dams in the Elwha River, coupled with hatchery production and fishing closures, affected population ...
George R. Pess, Michael L. McHenry, Keith Denton, Joseph H. Anderson, Martin C. Liermann, Roger J. Peters, John R. McMillan, Samuel J. Brenkman, Todd R. Bennett, Jeffrey J. Duda, Karrie M. Hanson   +10 more
doaj   +1 more source

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

Functional 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, Benjamin P. Burford, Rebecca R. Robinson, Lance K. Takata, Brendan M. Lehman, Cyril J. Michel   +5 more
wiley   +1 more source

Results of long-term biological monitoring of pacific salmons in the hatcheries of Kamchatsky Krai

Известия ТИНРО, 2015
The following biological problems of the pacific salmons cultivation in Kamchatka are considered on the base of long-term monitoring data (2001-2013): 1) dynamics of cultivated salmons abundance in the water bodies of salmon hatcheries; 2) salmon otolith
Alexander V. Bugaev, Nadezhda A. Rastyagaeva, Natalya N. Romadenkova, Marina A. Kudzina, Denis A. Davidyuk, Tatyana V. Gavruseva, Elena A. Ustimenko, Elena V. Bochkova, Evgeny G. Pogodaev   +8 more
doaj   +1 more source

Transcriptional breakpoints as predictors of thermal thresholds in a climate‐impacted stenothermal fish

Functional Ecology, EarlyView.
Read the free Plain Language Summary for this article on the Journal blog. Abstract The biogeography of ectotherms is greatly influenced by their thermal tolerance, which is expected to be tightly coupled to aerobic performance. However, preferred temperatures of ectotherms often deviate substantially from aerobic performance optima. This suggests that
Analisa Lazaro‐Côté, Travis C. Durhack, Matthew M. Guzzo, Andrew J. Chapelski, Benjamin C. Kissinger, Ken M. Jeffries, Neil J. Mochnacz   +6 more
wiley   +1 more source

Comparison of infectious agents detected from hatchery and wild juvenile Coho salmon in British Columbia, 2008-2018.

PLoS ONE, 2019
Infectious diseases are potential contributors to decline in Coho salmon (Oncorhynchus kisutch) populations. Although pathogens are theoretically considered to pose higher risk in high-density rearing environments like hatcheries, there is no direct ...
Omid Nekouei, Raphael Vanderstichel, Karia H Kaukinen, Krishna Thakur, Tobi Ming, David A Patterson, Marc Trudel, Chrys Neville, Kristina M Miller   +8 more
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

Supplementing beef cattle diets with brown seaweed affects coprophagous beetles' dung use

Agricultural and Forest Entomology, EarlyView.
Supplementing beef cattle diets with brown seaweed reduced the attractiveness of dung for a common dung beetle (Onthophagus nuchicornis). Dietary supplementation with brown seaweed appeared to reduce the proportion of major males in the F1 generation.
Samantha Bennett, Rhea Lumactud, Ghader Manafiazar, Paul Manning   +3 more
wiley   +1 more source

Intact coastal nursery rearing amid climate‐driven phenological shifts in threatened salmon

Conservation Biology, EarlyView.
Abstract Literature linking phenology to climate has proliferated in recent decades and shows that climate change has reorganized seasonal opportunities worldwide. However, this literature often quantifies changes in point measures of timing (e.g., beginnings and peaks) without context about duration (e.g., rearing season length) or performance (e.g ...
Stuart H. Munsch, Joseph H. Anderson, Eric M. Beamer, Joshua W. Chamberlin, Christopher Ellings, Correigh M. Greene, Sayre Hodgson, Michael T. LeMoine, W. Todd Zackey   +8 more
wiley   +1 more source