Results 61 to 70 of about 1,054 (162)

Neuronal Plasticity in the Mushroom Bodies of Winter Bees Is Retained Despite Substantially Advanced Age

Developmental Neurobiology, Volume 85, Issue 4, October 2025.
ABSTRACT Honeybee (Apis mellifera) workers exhibit remarkable behavioral plasticity throughout adult life. In spring and summer, they transition through diverse tasks over a short lifespan of 4–6 weeks. This involves dramatic changes in sensory environment and cognitive demands associated with pronounced structural neuronal plasticity in the mushroom ...
Nadine Kraft, Wolfgang Rössler, Claudia Groh   +2 more
wiley   +1 more source

Performance of two honey bee subspecies during harsh weather and Acacia gerrardii nectar-rich flow

Scientia Agricola
Both climatic factors and bee forage characteristics affect the population size and productivity of honey bee colonies. To our knowledge, no scientific investigation has as yet considered the potential effect of nectar-rich bee forage exposed to drastic ...
Awad Mohamed Awad, Ayman Ahmad Owayss, Abdulaziz Saad Alqarni   +2 more
doaj   +1 more source

Juvenile hormone promotes flight activity in drones (Apis mellifera carnica) [PDF]

Apidologie, 1997
Afin de verifier l'hypothese selon laquelle l'hormone juvenile (JH) stimule l'activite de vol chez les abeilles en general, des mâles âges de 2 a 5 jours ont recu une application de 5 ou de 10 μg de JH III. Les mâles ont ete marques a l'emergence et introduits dans des ruchettes de Kirchhain au sein de petites colonies (2 000 ouvrieres et une reine). L'
S. de Oliveira Tozetto, A. Rachinsky, W. Engels   +2 more
openaire   +1 more source

When African and European Lineages Meet: The Genetic Landscape of Honey Bees in Argentina

Ecology and Evolution, Volume 15, Issue 10, October 2025.
Using a 272‐SNP panel, we explored how Africanized (AHB) and European (EHB) honeybee populations interact across Argentina's diverse landscapes. A clear latitudinal pattern in Africanization, with an interesting inverse relationship between African (A) and European (C) ancestry.
Arian Avalos, Alejandra Scannapieco, A. Carolina Monmany‐Garzia, Ravi Kiran Donthu, José Marcelino, Rosanna Giordano, Tugrul Giray, Alberto Galindo‐Cardona   +7 more
wiley   +1 more source

Heritability of grooming behaviour in grey honey bees (Apis mellifera Carnica) [PDF]

Acta veterinaria, 2010
Grooming behaviour is considered an important defensive mechanism of honey bees against Varroa mites. The aim of this study was to reveal whether grooming behaviour is a useful criterion in breeding of Varroa-tolerant bees. To obtain a reliable evaluation the environmental influences were excluded.
Stanimirović, Zoran, Stevanović, Jevrosima, Aleksić, Nevenka, Stojić, Velibor   +3 more
openaire   +2 more sources

In Vitro and In Vivo Effect of Amitraz on Honey Bee Drone Sperm Quality

Acta Zoologica, Volume 106, Issue 4, Page 493-502, October 2025.
ABSTRACT Honey bee hive infestation by the ectoparasitic mite, Varroa destructor, has been a major cause of declining populations. Treating such infestations is important for sustainability. Knowledge about the sub‐lethal effects of commonly used acaricides on drone reproductive health, particularly sperm quality, is limited. The effect of in vitro and
Janice Faith Murray, Gerhard van der Horst, Mike Allsopp, Retha Christina Magrietha Kotzé   +3 more
wiley   +1 more source

Population-wide modelling reveals prospects of marker-assisted selection for parasitic mite resistance in honey bees

Scientific Reports
In 2019, a joint eight-variant model was published in which eight single nucleotide polymorphisms (SNPs) in seven Apis mellifera genes were associated with Varroa destructor drone brood resistance (DBR, i.e. mite non-reproduction in drone brood). As this
Regis Lefebre, Bart J. G. Broeckx, Lina De Smet, Luc Peelman, Dirk C. de Graaf   +4 more
doaj   +1 more source

Molecular characterisation of indigenous Apis mellifera carnica in Slovenia [PDF]

Apidologie, 2004
The genetic structure of Apis mellifera carnica bee from Slovenia, collected from 269 localities of ten Slovenian districts, was assessed by mitochondrial and nuclear DNA analyses. The level of genetic variability within and among districts was low.
Simona Su?nik, Peter Kozmus, Janez Poklukar, Vladimir Meglic   +3 more
openaire   +1 more source

Transcriptomic analysis of the mandibular gland genes associated with reproductive dominance in Apis mellifera capensis Esch. parasitic workers

Physiological Entomology, Volume 50, Issue 3, Page 233-244, September 2025.
Biosynthesis of the fatty acid components of the Apis mellifera mandibular gland pheromones takes place in a stepwise manner. Differential gene expression in the mandibular gland tissue of workers from two subspecies of African honey bees with differing reproductive potentials and at two age groups was investigated.
Fiona Nelima Mumoki, Christian Walter Werner Pirk, Robin Michael Crewe, Abdullahi Ahmed Yusuf   +3 more
wiley   +1 more source

Dynamics of the content of trace elements in royal jelly of different breeds (subspecies) of honey bees depending on the month of its collection

Біологія тварин
Royal jelly is a unique product of worker bees, namely the secret of their pharyngeal and maxillary glands. It is the main source of nutrients and biologically active substances for larvae and queens.
P. Y. Vorobets
doaj   +1 more source