Results 61 to 70 of about 14,186 (236)

Noncanonical Nucleotides in the Genome Around the Maternal‐Zygotic Transition

Journal of Experimental Zoology Part B: Molecular and Developmental Evolution, EarlyView.
In this paper, Kazzazi et al. provide a comprehensive review of the dynamics of nonconventional nucleotides in the genome during early developmental stages, hypothesizing a potential role for these nucleotides in the activation of the zygotic genome. ABSTRACT From the very moment of fertilization and throughout development, the cells of animal embryos ...
Latifa Kazzazy, Dávid Mező, Kinga K. Nagy, Viktória Perey‐Simon, Judit Tóth, Angéla Békési, Beáta Vértessy, Máté Varga   +7 more
wiley   +1 more source

Nectar production of pear (Pyrus communis L.) cultivars

International Journal of Horticultural Science, 2000
Detailed studies were made on the nectar production of 44, 16 and 18 pear cultivars, respectively, in a cultivar collection of pear during three consecutive years with highly different weather in the blooming.
P. Benedek, G. Kocsisné Molnár, J. Nyéki   +2 more
doaj   +1 more source

The effects of royal jelly on human health: A narrative review of clinical studies

JSFA reports, EarlyView.
Abstract Royal jelly (RJ) is a natural bioactive substance with documented effects on human health. This narrative review synthesizes evidence from clinical and clinically relevant experimental studies evaluating the therapeutic potential of RJ.
Georgios Goras, Andreas Thrasyvoulou, Evanthia Tsilimpokou   +2 more
wiley   +1 more source

Pollination ecosystem services in South African agricultural systems

South African Journal of Science, 2014
Insect pollinators, both managed and wild, have become a focus of global scientific, political and media attention because of their apparent decline and the perceived impact of this decline on crop production.
Annalie Melin, Mathieu Rouget, Jeremy J. Midgley, John S. Donaldson   +3 more
doaj   +1 more source

Area‐restricted search under realistic constraints

Oikos, EarlyView.
Abstract Area‐restricted search (ARS) is one of the most influential and widely used concepts in foraging theory, capturing a simple rule by which animals intensify local search following a resource encounter. Because ARS performs well in many spatially structured environments, it serves as a basic model for interpreting movement patterns across taxa ...
Inon Scharf, Arik Dorfman
wiley   +1 more source

Robinia pseudoacacia L. Flower Analyzed by Using An Unmanned Aerial Vehicle (UAV)

Remote Sensing, 2017
Tree flowers are important for flower–insect relationships, seeds, fruits, and honey production. Flowers are difficult to analyze, particularly in complex ecosystems such as forests.
Christin Carl, Dirk Landgraf, Marieke van der Maaten-Theunissen, Peter Biber, Hans Pretzsch   +4 more
doaj   +1 more source

Unshared on the top: strong segregation of pathogen communities between western honey bees and wild bees in a retreating glacier foreland

Oikos, EarlyView.
Shared flowers can facilitate pathogen transmission between managed honey bees and wild bees, yet this process remains poorly understood in ecosystems undergoing rapid environmental change. Using a glacier foreland in Switzerland, we present the first study on how glacier retreat stages and bee life‐history traits influence pathogen occurrence across ...
Andrea Ferrari, Giovanni Cilia, Matteo Conti, Bao Ngan Tu, Nora Khelidj, Gianalberto Losapio, Carlo Polidori   +6 more
wiley   +1 more source

Demonstrating limitations of area‐restricted search as a foraging mechanism

Oikos, EarlyView.
Foragers often rely on simple behavioral rules that translate local environmental cues into movement decisions. One of the most widespread rules is area‐restricted search (ARS), in which movement becomes less directional following resource encounters. ARS is generally considered effective for exploiting clustered resources, yet recent conceptual work ...
Inon Scharf
wiley   +1 more source

The Morphological Image of Fat Body and Tergal Gland Cells in Uninseminated Apis mellifera Queen Bees

Insects
The morphological changes in fat body cells, tergal gland cells, and the surface areas of the cell nuclei were determined in queen bees of the subspecies Apis mellifera carnica.
Milena Jaremek, Krzysztof Olszewski, Jacek Chobotow, Aneta Strachecka   +3 more
doaj   +1 more source

The pistil as a traffic light: Yellow‐to‐red color change likely influences pollinator visitation patterns in Saxifraga fortunei (Saxifragaceae)

PLANTS, PEOPLE, PLANET, EarlyView.
Flowers can communicate reproductive status to pollinators through visual cues. In Saxifraga fortunei, pistils often changed from yellow to red after pollination, and hoverflies and honeybees preferentially visited flowers with yellow pistils. This pattern suggests that a post‐pollination color shift confined to the pistil can reduce revisits to ...
Kazuma Takizawa, Masayasu Furukawa, Kenji Suetsugu   +2 more
wiley   +1 more source