Results 61 to 70 of about 718 (168)

How the Choice of Spatial Resolution Affects Freshwater Fish Species Distribution Models

Ecology and Evolution, Volume 16, Issue 4, April 2026.
We examined the influence of spatial resolution on freshwater fish SDMs across Europe. Model performance and variable importance were consistent across scales, but predicted range size declined with finer resolution. These results highlight the importance of spatial resolution when obtaining SDM outputs for conservation purposes.
Davide Fundaro', Jelle P. Hilbers, Koen J. J. Kuipers, Aafke M. Schipper   +3 more
wiley   +1 more source

Distribution of host-specific parasites in hybrids of phylogenetically related fish: the effects of genotype frequency and maternal ancestry?

Parasites & Vectors, 2020
Background Host specificity is one of the outputs of the coevolution between parasites and their associated hosts. Several scenarios have been proposed to explain the pattern of parasite distribution in parental and hybrid genotypes ranging from hybrid ...
Vadym Krasnovyd, Lukáš Vetešník, Andrea Šimková   +2 more
doaj   +1 more source

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

Ecology 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, B. Hayden, A. J. Piro, K. K. Kahilainen   +3 more
wiley   +1 more source

Methane‐Derived Carbon Contributes to Fish Biomass in a Deep, Eutrophic Reservoir

Freshwater Biology, Volume 71, Issue 4, April 2026.
ABSTRACT Methanotrophic bacteria oxidise large amounts of biogenic methane produced in freshwater and bind the original methane carbon in their biomass. When these bacteria are consumed by other organisms, methane‐derived carbon enters food webs. Methane‐derived carbon can support a substantial part of invertebrate biomass in some freshwater ecosystems.
Mojmír Vašek, Petr Blabolil, Marek Šmejkal, Michal Tušer, Daniel Bartoň, Vladislav Draštík, Luboš Kočvara, Jan Kubečka, Milan Říha, Tomáš Jůza   +9 more
wiley   +1 more source

Environmental Enrichment in Aquaculture: Linking Welfare Goals to Practical Applications

Reviews in Aquaculture, Volume 18, Issue 2, March 2026.
ABSTRACT Aquaculture is the fastest growing food production sector globally, comprising freshwater and marine species reared under highly variable farming contexts, ranging from extensive earthen ponds to intensive recirculating and sea‐based systems. Together with growth, production has also intensified, and the welfare of fish farmed in these systems
Olivia Spiliopoulos, Sunil Kadri, Michelle Sinclair, Myriam Vanderzwalmen, Culum Brown   +4 more
wiley   +1 more source

Notes From the Era of Pre‐Modern Fishing in the Baltic Sea Reveal an Extensive and Resilient Fishing Mode

Aquaculture, Fish and Fisheries, Volume 6, Issue 1, February 2026.
ABSTRACT In the past half‐century, fishing in one regional part of the Baltic Sea, the Stockholm Archipelago, has almost disappeared due to falling fish abundance, especially of herring (Clupea harengus). By examining published observations and archived material on historical fishing patterns, we found evidence of a remarkably continuous high level of ...
Henrik Svedäng, Susanna Lidström
wiley   +1 more source

What to Expect After a Commercial Fishery Ban? Long Term Fish Size and Biomass Trends in Two Productive Water Bodies With Contrasting Management Regimes

Aquatic Conservation: Marine and Freshwater Ecosystems, Volume 36, Issue 2, February 2026.
ABSTRACT Commercial fishing is often assumed to have greater impacts than recreational fishing, and many fisheries assessments overlook the latter. Yet, numerous coastal and freshwater fish populations are subject to both fishing types and environmental pressures, all influencing biomass, body size and community structure and making management outcomes
Eglė Jakubavičiūtė, Žilvinas Pūtys, Linas Ložys, Asta Audzijonyte   +3 more
wiley   +1 more source

The impact of an oil spill on organs of bream Abramis brama in the Po River

Ecotoxicology and Environmental Safety, 2012
An oil spill into the River Lambro occurred on 23 February 2010 and reached the Po River the following day. Breams captured here on 1 March 2010, along with a sample from a control site, were examined by light and electron microscopy. The main affected organs were skin and gill with slight or no damage to liver, kidney, and intestine.
GIARI, Luisa, SAYYAF DEZFULI, Bahram, LANZONI, Mattia, CASTALDELLI, Giuseppe   +3 more
openaire   +3 more sources

Hematological and histopathological changes in leukemia of bream - Abramis brama (L.)

Acta Ichthyologica et Piscatoria, 1974
The nature of anatomo-pathological and histopathological changes as well as the quantitative and qualitative evaluation of the peripheral blood and the hemopoiesis centres allowed to detect symptoms of leukemia in a bream female. The picture of changes indicates to a certain similarity between this disease and a form of granulocytic leukemia occurring ...
Einszporn-Orecka,T., Wierzbicka,J.
openaire   +2 more sources

BREAM FECUNDITY (ABRAMIS BRAMA LINNAEUS, 1758) IN THE VOLGA DELTA

Vestnik of Astrakhan State Technical University. Series: Fishing industry, 2018
Negative processes in the North Caspian related to low water in 2006, 2008-2012, 2014 and 2015 have resulted in drastic decrease of abundance of the most numerous species - bream Abramis brama (Linnaeus,1758). Bream remains the main mass species of the Volga-Caspian region, despite changes in qualitative structure of the population, reducing age, size ...
Natalia Vadimovna Levashina, Vladimir Prokofievich Ivanov   +1 more
openaire   +2 more sources