Results 111 to 120 of about 7,904 (250)

Eusocial bee species are exposed to different toxic element profiles despite foraging within the same landscape

Ecological Entomology, EarlyView.
Bombus terrestris and Apis mellifera colonies sharing the same landscape (<50 m from each other) collected pollen with significantly different heavy metal concentrations. B. terrestris‐collected pollen contained 2–7× higher concentrations of arsenic, chromium, cobalt, lead and tin than A. mellifera‐collected pollen.
Sarah B. Scott, Nynke Blömer, Lynn V. Dicks   +2 more
wiley   +1 more source

Influence of elevation, climate, snowmelt and floral abundance on body size of solitary bees

Ecological Entomology, EarlyView.
We measured body size in bee species from a 10‐year specimen collection from Colorado sub‐alpine meadows (2450–3450 m) and tested effects of elevation and annual snowmelt, climate and floral abundance. 2 out of 4 bee species collected across a broad elevation range showed a decline in body size with higher elevations; the other two showed no effect ...
Lachlan C. Jones, Melanie R. Kazenel, Kristin Conrad, Jane E. Ogilvie, Ian K. Breckheimer, Rebecca E. Irwin   +5 more
wiley   +1 more source

Specific phytochemicals in floral nectar up-regulate genes involved in longevity regulation and xenobiotic metabolism, extending mosquito life span. [PDF]

Ecol Evol, 2021
Njoroge TM, Calla B, Berenbaum MR, Stone CM.   +3 more
europepmc   +1 more source

Seasonality and plasticity in the use of native and introduced plant resources by a large forest parrot

Ibis, EarlyView.
Human‐induced environmental change is reshaping plant communities, requiring native animals to adapt their foraging behaviour to track and exploit novel food resources. Trees such as pines (Pinus spp.) introduced for plantation forestry outside of their native ranges often become naturalized.
Tirth Vaishnav, Kevin Chase Burns, Rachael C. Shaw   +2 more
wiley   +1 more source

AMINO ACIDS IN THE FLORAL NECTAR OF COTTON [PDF]

Apidologie, 1981
Gilliam, Martha, McCaughey, W. F., Moffett, Joseph O.   +2 more
openaire   +1 more source

Sheep and cattle grazing regimes differentially affect ground beetle and ant communities in Mediterranean cork oak woodlands

Insect Conservation and Diversity, EarlyView.
Sheep and cattle grazing significantly shape ant and ground beetle species composition in Mediterranean cork oak woodlands, promoting higher diversity by increasing habitat heterogeneity. Ground beetles and ants reflect changes in grazing regimes, with sheep‐grazed areas showing the highest diversity, highlighting their utility in ecosystem monitoring.
Marcello Verdinelli, Maria Leonarda Fadda, Stefano Arrizza, Roberto Mannu   +3 more
wiley   +1 more source

Against the odds: Nesting specialization and foraging ecology provide insights into climate change responses in a mountain bee

Insect Conservation and Diversity, EarlyView.
A unique high‐elevation Exoneura bee defies typical elevation‐driven declines in bee activity, nesting exclusively in dead branches of snow gums near the alpine tree line. Nesting and foraging are tightly linked to snow gum presence, with most activity occurring within 30 m of these trees. Biophysical modelling indicates the bee's thermally constrained
Joshua M. Coates, Noel Takeshima, Francisco Encinas‐Viso, Saul A. Cunningham   +3 more
wiley   +1 more source

Non‐crop habitats and cover crops as potential ecological corridors and stepping stones for autumnal migrating hoverflies

Insect Conservation and Diversity, EarlyView.
Mass migration of hoverflies was observed near Prague city in a highly agricultural landscape, representing only the second record of hoverfly migration in the Czech Republic. This rare observation was likely driven by the need to rest, shelter and replenish energy, although most flowers had already finished blooming.
Antonín Hlaváček, Martin Štrobl, Michal Knapp, Jiří Hadrava   +3 more
wiley   +1 more source

Nectar and pollen in Acer trees can contribute to improvement of food resources for pollinators

Scientific Reports
In the present study, we quantified floral resources (nectar and pollen production) and their quality (nectar sugar composition, pollen protein content, pollen amino acid composition) in five Acer species (f.
Ewelina Chrzanowska, Bożena Denisow, Monika Strzałkowska-Abramek, Marta Dmitruk, Krystyna Winiarczyk, Małgorzata Bożek   +5 more
doaj   +1 more source

Heavy metal and metalloid contamination of nectar: Sources, ecological implications, and methods of analysis

Environmental and Experimental Botany
Pollination is among the most vital interactions in terrestrial ecosystems, yet it is increasingly under threat. One emerging concern is the contamination of nectar, the primary floral reward, with heavy metals and metalloids. Unlike other floral tissues,
Katarzyna Roguz, Aleksandra Szaniawska
doaj   +1 more source