Results 131 to 140 of about 1,502,487 (275)

The impact of helminth infection in fish farms on wild trout populations: host immune regulation of disease risk

Parasitology
Intensive rearing of farmed fish may risk disease spillover into free-living populations. This study concerns the blood-feeding gill monogenean of salmonids, Discocotyle sagitatta, on the Isle of Man, UK.
Richard C. Tinsley, Abigail M. Carey, Miguel Rubio-Godoy   +2 more
doaj   +1 more source

Similarities Between the Lipid Profiles of Skin and Liver of European Sea Bass (Dicentrarchus labrax) Fed Diets With Different Lipid Content

Journal of Animal Physiology and Animal Nutrition, EarlyView.
ABSTRACT The fatty acid composition of fish is influenced by species, age, diet, and tissues, which respond differently to dietary lipids. This study examined how two commercial diets with contrasting polyunsaturated fatty acid (PUFA) profiles, affecting eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA), alter the fatty acid composition in ...
Daniel González‐Silvera, Cristóbal Espinosa‐Ruiz, M. Ángeles Esteban   +2 more
wiley   +1 more source

Ontogenetic and spatial variations in brown trout habitat selection

, 2010
Habitat quality and quantity determine many biological processes and traits that directly affect the population dynamics of stream fishes. Understanding how habitat selection is adjusted to different ecological conditions is essential to improve ...
Almodóvar Pérez, Ana María, Ayllón Fernández, Daniel, Elvira Payán, Benigno, Gómez Nicola, María Gracia, B. Elvira, D. Ayllón, A. Almodóvar, G. G. Nicola   +7 more
core   +1 more source

Movement Behaviour of Three Rheophilic Cyprinids in a Culvert‐Fragmented Stream

Ecology of Freshwater Fish, Volume 36, Issue 1, January 2027.
ABSTRACT Many freshwater fish species rely on movement across unobstructed river systems to complete their life cycles. However, anthropogenic activities such as river regulation, dams, and culverts increasingly restrict fish movements by compromising river connectivity and altering habitat characteristics.
Nele K. Borowski, Pim Lemmers, Joris J. F. Verhees, Ben H. J. M. Crombaghs, Didier J. R. C. Lemmens, Wim J. A. M. Lemmers, Casper H. A. van Leeuwen   +6 more
wiley   +1 more source

Enby Ecologies: On Being Fluid in the Field

Area, Volume 58, Issue 4, December 2026.
Short Abstract In this essay, three non‐binary dendrochronologists braid together a visual and reflexive autoethonography, pulling from years of personal anecdotes, photographs and illustrations to reflect on being non‐binary in field‐based disciplines within environmental geography to tend towards our lived ‘enby ecologies’.
Ellen Bergan, Nick Koenig, Lauren Stachowiak   +2 more
wiley   +1 more source

Integrated Biomarker Assessment of Bifenthrin, Chlorpyrifos and Endosulfan Toxicity in Indigenous Carps (Catla catla and Labeo rohita): Oxidative Stress, Genotoxicity and Nuclear Alterations

Veterinary Medicine and Science, Volume 12, Issue 6, November 2026.
Combined exposure to bifenthrin–chlorpyrifos and bifenthrin–endosulfan mixtures induced oxidative stress, genotoxicity and nuclear abnormalities in Catla catla and Labeo rohita. Antioxidant and DNA damage biomarkers provide sensitive tools for assessing pesticide‐related ecological risks in aquatic environments. ABSTRACT Background The extensive use of
Huma Naz, Sajid Abdullah, Tanveer Ahmed, Khalid Abbas, Muhammad Umar Ijaz, Qudrat Ullah, Shabana Naz, Rifat Ullah Khan, Luciana Rossi, Sohail Ahmad, Rasha Alonaizan   +10 more
wiley   +1 more source

Brown Trout Research in Scotland [PDF]

Nature, 1951
openaire   +1 more source

An introduction to brown trout

, 1955
The brown trout may be considered as the fish that saved trout fishing in many streams in our country. As the western movement grew, many fields around rivers and streams were cleared of surrounding tress, thus destroying shade and watersheds.
Kolar, Ronald Joseph
core   +1 more source

Heightened threats to small woodland caribou populations in Canada and key considerations for their persistence Menaces pesant sur les petites populations de caribou des bois au Canada et considérations essentielles à leur rétablissement

Wildlife Monographs, Volume 227, Issue 1, November 2026.
Abstract Woodland caribou (Rangifer tarandus) are one of the most iconic wildlife species in Canada. These large ungulates depend on undisturbed, interconnected assemblages of mature and old‐growth conifer forests for survival, and exhibit life‐history traits typical of K‐selected species (i.e., low reproductive rates, long generation times, and slow ...
Anna M. Calvert, Mathieu Leblond, Esther Chang   +2 more
wiley   +1 more source

Impacts of signal crayfish on stream fishes [PDF]

, 2013
Invasive species cause biodiversity and economic loss globally. Invasive crayfish have a wide range of effects as a result of their high densities and biomass, feeding at multiple trophic levels, aggressive competition for shelter and ecosystem ...
FINDLAY, JOHN,DAVID,STUART
core