Results 31 to 40 of about 3,106,667 (342)

Social reversal of immunosenescence in honey bee workers [PDF]

Experimental Gerontology, 2005
A striking example of immunosenescence is seen in the honey bee (Apis mellifera) worker caste. The bees' age-associated transition from hive duties to more risky foraging activities is linked to a dramatic decline in immunity. Explicitly, it has been shown that an increase in the juvenile hormone (JH) level, which accompanies onset of foraging behavior,
Gro V, Amdam, Anne Lene T O, Aase, Siri-Christine, Seehuus, M, Kim Fondrk, Kari, Norberg, Klaus, Hartfelder   +5 more
openaire   +2 more sources

Nationwide Screening for Bee Viruses in Apis mellifera Colonies in Egypt

Insects, 2023
Honey bees are essential for crop and wild plant pollination. However, many countries have reported high annual colony losses caused by multiple possible stressors.
Mohamed Kandel, Robert J. Paxton, Yahya Al Naggar   +2 more
doaj   +1 more source

Immune related gene expression in worker honey bee (Apis mellifera carnica) pupae exposed to neonicotinoid thiamethoxam and Varroa mites (Varroa destructor)

PLoS ONE, 2017
Varroa destructor is one of the most common parasites of honey bee colonies and is considered as a possible co-factor for honey bee decline. At the same time, the use of pesticides in intensive agriculture is still the most effective method of pest ...
Tanja Tesovnik, I. Cizelj, M. Zorc, M. Čitar, J. Božič, G. Glavan, M. Narat   +6 more
semanticscholar   +1 more source

Combined pesticide exposure severely affects individual- and colony-level traits in bees [PDF]

, 2012
Reported widespread declines of wild and managed insect pollinators have serious consequences for global ecosystem services and agricultural production [1–3].
A Decourtye, A Elbert, A Rortais, AM Klein, BP Oldroyd, C Brittain, C Kremen, CA Mullin, CH Krupke, CW Schneider, D Garthwaite, D Goulson, EC Yang, ED Pilling, H Thompson, HM Thompson, HM Thompson, JC Biesmeijer, JE Cresswell, JM Bonmatin, JM Bonmatin, L Bortolotti, L Pelletier, M Henry, M Molet, MJF Brown, MP Chauzat, MP Chauzat, MP Halm, N Desneux, NE Raine, Nigel E. Raine, Oscar Ramos-Rodriguez, PR Whitehorn, R Schmid-Hempel, Richard J. Gill, RM Johnson, RM Johnson, SG Potts, T Blacquière, V Mommaerts, VA Krischik   +41 more
core   +1 more source

Unexpected worker mating and colony-founding in a superorganism

Nature Communications, 2023
The emergence of caste-differentiated colonies, which have been defined as ‘superorganisms’, in ants, bees, and wasps represents a major transition in evolution.
Mingsheng Zhuang, Thomas J. Colgan, Yulong Guo, Zhengyi Zhang, Fugang Liu, Zhongyan Xia, Xueyan Dai, Zhihao Zhang, Yuanjian Li, Liuhao Wang, Jin Xu, Yueqin Guo, Yingping Qu, Jun Yao, Huipeng Yang, Fan Yang, Xiaoying Li, Jun Guo, Mark J. F. Brown, Jilian Li   +19 more
doaj   +1 more source

Expression of hSP90 gene and its relationship with ambient temperature and foraging rate in apis mellifera meda [PDF]

مجله بیوتکنولوژی کشاورزی, 2021
Objective HSP90 is a member of heat shock proteins (HSPs) family which produces in response to environmental stress factors and has different roles in cells.
Salem Morammazi, Mohammad Alii Mirhosseini   +1 more
doaj   +1 more source

Forager bees (Apis mellifera) highly express immune and detoxification genes in tissues associated with nectar processing. [PDF]

, 2015
Pollinators, including honey bees, routinely encounter potentially harmful microorganisms and phytochemicals during foraging. However, the mechanisms by which honey bees manage these potential threats are poorly understood.
Johnson, Brian R, Mohamed, Abbas, Vannette, Rachel L   +2 more
core   +1 more source

Reproduction of Distinct Varroa destructor Genotypes on Honey Bee Worker Brood

Insects, 2019
Honey bees play important roles in pollination for many crops and wild plants, but have been facing great threats posed by various pathogens and parasites.
Wenfeng Li, Cheng Wang, Zachary Y. Huang, Yanping Chen, Richou Han   +4 more
doaj   +1 more source

Isolation, Assessments of Risk Factors, and Antimicrobial Susceptibility Test of Klebsiella from Gut of Bee in and around Haramaya University Bee Farm, East Hararghe, Oromia Regional State, Ethiopia

Veterinary Medicine International, 2022
A cross-sectional study was employed from March 2021 to October 2021 to isolate and identify Klebsiella species found in the gut of honey bees collected from worker of honey bee (Apis mellifera) from hives in Haramaya University bee farm, Damota and ...
Abdallahi Abdurehman Damissie, Kedir Abdurahman Musa   +1 more
doaj   +1 more source

The effect of some food sources and hive products on the oriental hornet Vespa orientalis Linnaeus 1771 (Hymenoptera: Vespidae)

Kufa Journal for Agricultural Sciences, 2023
This study was carried out in the bee laboratory in the Faculty of Agriculture –University of Kufa in September 2021 to evaluate some protein sources and hive products against the oriental hornet Vespa orientalis Linnaeus 1771 (Hymenoptera: Vespidae ...
Afrah Abdulzahraa Aljassani, Mushtaq Talib Al-Esawy, Razzaq Shalan Augul   +2 more
doaj   +1 more source