Results 41 to 50 of about 39,220 (277)

Towards integrated control of varroa: effect of variation in hygienic behaviour among honey bee colonies on mite population increase and deformed wing virus incidence [PDF]

, 2014
Hygienic behaviour in the honey bee, Apis mellifera, is the uncapping and removal of dead, diseased or infected brood from sealed cells by worker bees. We determined the effect of hygienic behaviour on varroa population growth and incidence of deformed ...
Al Toufailia, Hasan M, Amiri, Esmaeil, Kryger, Per, Ratnieks, Francis L W, Scandian, Luciano   +4 more
core   +1 more source

Gradual pollen release in a buzz‐pollinated plant: Investigating pollen presentation theory under bee visitation

Functional Ecology, EarlyView.
Read the free Plain Language Summary for this article on the Journal blog. Abstract The rate at which flowers dispense pollen across successive pollinator visits is a key functional trait influencing male reproductive success. Pollen presentation theory (PPT) predicts that when pollinators are abundant and actively groom their bodies to collect pollen,
Mario Vallejo‐Marín, Anna Lundgren
wiley   +1 more source

Evidence of forage distance limitations for small bees (Hymenoptera: Apidae)

European Journal of Entomology, 2015
The distribution of ground-nesting bees was investigated using transects of water traps in a mosaic of nesting and forage habitats at Shotover Hill in Oxfordshire, UK. The site includes a large area of ground-nesting bee activity and is adjoined on three
Ivan R. WRIGHT, Stuart P.M. ROBERTS, Bonnie E. COLLINS   +2 more
doaj   +1 more source

Comparative micro-computed tomographic analysis of the structure of brood cells and its effect on the development of the pupae of honey bee (Apis mellifera)

European Journal of Entomology, 2023
Most beekeepers worldwide use the same combs in their hives for many years, which can result in alterations in the inner volume of the comb cells. The objective of this survey using microcomputed tomography was to reveal developmental disorders caused by
Tamás SIPOS, Tamás DONKÓ, Ádám CSÓKA, Tamás KISS, Sándor KESZTHELYI   +4 more
doaj   +1 more source

Great Diversity of Insect Floral Associates May Partially Explain Ecological Success of Poison Ivy (\u3ci\u3eToxicodendron Radicans\u3c/i\u3e Subsp. \u3ci\u3eNegundo\u3c/i\u3e [Greene] Gillis, Anacardiaceae) [PDF]

, 2018
Little is known about insect floral associates of poison ivy (Toxicodendron radicans, Anacardiaceae), despite the species’ ubiquity and importance in nature and society.
Senchina, David S, Summerville, Keith S
core   +2 more sources

The transformer gene controls sexual development in Drosophila suzukii

Insect Science, EarlyView.
The transformer gene plays a key role in the genetic pathway for sexual development in Drosophila suzukii Abstract The genetic network of sex determination in the model organism Drosophila melanogaster was investigated in great detail. Such knowledge not only advances our understanding of the evolution and regulation of sexual dimorphism in insects ...
Ying Yan, Jing Zhao, Jonas Schwirz, Cristina Borghesi, Conghui Liu, Bo Liu, Wanqiang Qian, Fanghao Wan, Marc F. Schetelig   +8 more
wiley   +1 more source

Sperm viability in the male accessory testes and female spermathecae of the bumblebee Bombus terrestris (Hymenoptera: Apidae)

European Journal of Entomology, 2008
In many species sperm competition selects for large ejaculates while females eliminate or disable a high percentage of the spermatozoa in their storage organs in order to control paternity.
Michael GREEFF, Paul SCHMID-HEMPEL
doaj   +1 more source

Physicochemical characteristics of organic honey samples of africanized honeybees from Paraná River islands. [PDF]

, 2011
This research was carried out to evaluate the physicochemical composition of organic honey in Paraná River islands, in Porto Brasílio, State of Paraná. Honey was harvested directly from super of the colonies in three apiaries spread in the Floresta and ...
Alves, Eloi Machado, Anacleto, Daniela de Almeida, Marchini, Luis Carlos, Neves, Carolina Antunes, Sereia, Maria Josiane, Toledo, Tiago Cleyton Simões de Oliveira Arnaut de, Toledo, Vagner de Alencar Arnaut de   +6 more
core   +3 more sources

Genetic differentiation and adaptive evolution of buff‐tailed bumblebees in Asia

Insect Science, EarlyView.
This study investigates the genetic differentiation and local adaptation of the buff‐tailed bumblebee (Bombus terrestris) across its European and Asian populations. Using whole‐genome resequencing, we identified distinct genetic differences between populations, with Asian B. terrestris representing a unique genetic resource.
Long Su, Lele Ding, Paul H. Williams, Yan Liu, Ruijuan Wang, Xiaoyan Dai, Shan Zhao, Haolin Fu, Xiaomeng Zhao, Quangui Wang, Yancan Li, Huiling Sang, Robert M. Waterhouse, Yifan Zhai, Cheng Sun   +14 more
wiley   +1 more source

Bumblebee (Hymenoptera: Apidae) sample storage for a posteriori molecular studies: Interactions between sample storage and DNA-extraction techniques

European Journal of Entomology, 2013
A global decline in pollinator abundance and diversity has demanded increased research attention to the ecology and genetics of bumblebees. However, as progressively more restrictions are placed on sampling for insects, researchers are increasingly ...
António S. MOREIRA, Finbarr G. HORGAN, Tomás E. MURRAY, Thomais KAKOULI-DUARTE   +3 more
doaj   +1 more source