Results 151 to 160 of about 34,394 (239)

A century of theories of balancing selection

open access: yesBiological Reviews, Volume 101, Issue 2, Page 804-825, April 2026.
ABSTRACT Traits that affect organismal fitness are often highly genetically variable. This genetic variation is vital for populations to adapt to their environments, but it is also surprising given that nature – after all – ‘selects’ the best genotypes at the expense of those that fall short.
Filip Ruzicka   +10 more
wiley   +1 more source

Brown Trout Abundance in Boreal Streams With Large Wood

open access: yesEcology of Freshwater Fish, Volume 35, Issue 2, April 2026.
ABSTRACT Large wood has been found to be a crucial component in riverine ecosystems. However, due to the heavy channelization of rivers and intensive forestry practices over the past few decades, the amount of large wood in these ecosystems has decreased worldwide. River restoration aims to mitigate the effects of channelization and restore the channel
Alisa Koski   +3 more
wiley   +1 more source

Seasonal Variation of δ13C and δ15N in a Boreal Lake Fish Community—Year‐Round Patterns and Explanatory Variables

open access: yesEcology of Freshwater Fish, Volume 35, Issue 2, April 2026.
ABSTRACT Seasonal changes in freshwater ecosystems influence fish resource use through both environmental and biological factors, but year‐round studies that include ice‐covered months have been lacking. We investigated seasonal variation in the stable isotope ratios of carbon (δ13C) and nitrogen (δ15N) using year‐round monthly sampling of the fish ...
E. S. Eerola   +3 more
wiley   +1 more source

Dietary supplementation with ALLPRO, a DHA source, for Nile tilapia reared under field conditions throughout cold season: Effects on growth performance, carcass and fillet quality, and economic feasibility

open access: yesJournal of the World Aquaculture Society, Volume 57, Issue 2, April 2026.
Abstract This study evaluated the effects of dietary supplementation with ALLPRO, a source of docosahexaenoic acid (DHA—C22:6n‐3, 126 g kg−1 dry weight) and nucleotides (5 g kg−1 dry weight), on Nile tilapia farmed in southern Brazil during autumn, winter, and spring.
Vitor Mendes Lehmkuhl   +6 more
wiley   +1 more source

Utilizing a consumer taste panel to assess the geosmin sensory detection threshold in market‐size Atlantic salmon, Salmo salar, produced in land‐based aquaculture systems

open access: yesJournal of the World Aquaculture Society, Volume 57, Issue 2, April 2026.
Abstract Microbially derived geosmin causes an earthy off‐flavor in Atlantic salmon, Salmo salar, produced in land‐based systems, placing these products at risk for rejection. Therefore, a study was conducted to investigate the geosmin sensory threshold in market‐size Atlantic salmon.
John Davidson   +4 more
wiley   +1 more source

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