Results 101 to 110 of about 8,724 (245)

Floral reward traits change between sexual phases in two Helleborus species

Scientific Reports
Nectar and pollen attractants as well as visitors in Helleborus viridis ssp. viridis and H. purpurascens (Ranunculaceae), i.e. European species, were studied during two flowering seasons.
Aneta Sulborska-Różycka, Bożena Denisow, Monika Strzałkowska-Abramek, Katarzyna Jaśkiewicz   +3 more
doaj   +1 more source

From moths to microbes: investigating reproductive biology, pollination and nectar in Platanthera Transversa (Suskd.) R.M. Bateman (Orchidaceae)

Journal of Plant Interactions
Platanthera transversa is a common orchid in western North America yet it is poorly studied. This makes it difficult to understand the breadth of pollinators and floral attractant mechanisms present, both of which are vital to understanding the dynamics ...
Genevieve E. van der Voort, Moritz Plendl, Hannah N. D. Sadler, McIntyre A. Barrera, Fletcher E. Falk, Andrew H. Loudon, Jasmine K. Janes   +6 more
doaj   +1 more source

Impacts of a Sweet Orange Essential Oil–Based Biopesticide on Exorista larvarum, a Parasitoid Tachinid Fly With a Dual Role

Entomologia Experimentalis et Applicata, EarlyView.
Lethal (mortality) and sublethal (fecundity, fertility) effects of the biopesticide Prev‐Am Plus (containing ~6% sweet orange essential oil) were assessed on the tachinid fly Exorista larvarum. Mated females were exposed via contact and oral routes across five concentrations (0.25%–20%) using protocols adapted from Apis mellifera.
Santolo Francati, Fabio Sgolastra, Rafaela Tadei, Maria Luisa Dindo   +3 more
wiley   +1 more source

Two Metschnikowia nectar yeast species have similar volatile profiles but elicit differential foraging in bee pollinators

Ecological Entomology, EarlyView.
Yeasts that specialize in flower nectar play an important role in pollination ecology. Metschnikowia reukaufii and Metschnikowia koreensis were the most prevalent nectar yeasts found in our field sites. Bee pollinators exhibited different behavioural responses to nectar yeasts in field experiments. Bees visited more flowers with M.
M. Elizabeth Moore, Lindsey Wilson, Nathan Brandt, Ayako Wada‐Katsumata, Ahmed M. Saveer, Coby Schal, Robert R. Dunn, Rebecca E. Irwin, Caiti Smukowski Heil   +8 more
wiley   +1 more source

Do aphid endosymbiotic bacteria influence parasitoid searching behaviour through changes in aphid honeydew production?

Ecological Entomology, EarlyView.
Hamiltonella defensa infection increases honeydew production in certain aphid genotypes, potentially modifying aphid feeding behaviour. Parasitoid wasps, Aphidius ervi, are more attracted to honeydew from H. defensa‐infected aphids; though larger honeydew amounts may slightly deter searching.
Desiré Macheda, Alexandre Foito, Katharine F. Preedy, Colin J. Alexander, Ankush Prashar, Alison J. Karley   +5 more
wiley   +1 more source

No evidence of a decoy effect in bees: Rewardless flowers do not increase bumblebees' preference for neighbouring flowers

Ecological Entomology, EarlyView.
Many plants retain nectarless flowers; we tested whether these act as “decoys” for bees by making neighbouring rewarding flowers seem more valuable—a cognitive bias known as the decoy effect. The presence of decoy flowers did not shift bumblebee preferences between two equally rewarding inflorescences, and bees quickly learned to avoid these nectarless
Mélissa Armand, Leonhard Herrnberger, Clara Jung, Tomer J. Czaczkes   +3 more
wiley   +1 more source

Nutrimental Composition and physicochemical parameters of thermosonicated soursop Nectar

TIP Revista Especializada en Ciencias Químico-Biológicas, 2018
Se evaluó el efecto de la termosonicación (TS) a dos diferentes condiciones experimentales [TS1 = 24 kHz, 1,3 W/mL de densidad de energía acústica (AED), 51 °C durante 8 min y TS2 = 24 kHz, 1,4 W/mL AED, 54 °C durante 10min] sobre la composición nutrimental y parámetros fisicoquímicos de néctar de guanábana almacenado a 4ºC.Como testigos se emplearon ...
Luis M. Anaya-Esparza, María D. Méndez-Robles, Alejandro Pérez-Larios, Elhadi M. Yahia, Efigenia Montalvo-González   +4 more
openaire   +1 more source

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

Assessment of Floral Nectar and Amino Acid Yield in Eight Landscape Trees for Enhanced Pollinator Food Resources in Urban Forests

Plants
Urban environments pose challenges for pollinators due to habitat loss and limited floral resources. However, green infrastructure, particularly street and ornamental trees, can play a critical role in supporting urban pollinator communities.
Sung-Joon Na, Ji-Min Park, Hae-Yun Kwon, Young-Ki Kim   +3 more
doaj   +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