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https://www.readbyqxmd.com/read/28936680/use-of-honeybees-apis-mellifera-l-as-bioindicators-for-assessment-and-source-appointment-of-metal-pollution
#1
Nenad M Zarić, Konstantin Ilijević, Ljubiša Stanisavljević, Ivan Gržetić
The ability of honeybees to collect particulate matter (PM) on their bodies makes them outstanding bioindicators. In this study, two cities, Pančevo (PA) and Vršac (VS), South Banat district, Vojvodina, Serbia, were covered with two sampling sites each. The aims of this study were to determine concentrations of Al, Ba, Cd, Co, Cr, Cu, Fe, Mn, Na, Ni, Sr, and Zn in the bodies of honeybees during July and September of 2013, 2014, and 2015 and to analyze their spatial and temporal variations and sources of analyzed elements, as well as to assess pollution levels in the two cities...
September 21, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28935437/responses-to-sugar-and-sugar-receptor-gene-expression-in-different-social-roles-of-the-honeybee-apis-mellifera
#2
Laura Değirmenci, Markus Thamm, Ricarda Scheiner
Honeybees (Apis mellifera) are well-known for their sophisticated division of labor with each bee performing sequentially a series of social tasks. Colony organization is largely based on age-dependent division of labor. While bees perform several tasks inside the hive such as caring for brood ("nursing"), cleaning or sealing brood cells or producing honey, older bees leave to colony to collect pollen (proteins) and nectar (carbohydrates) as foragers. The most pronounced behavioral transition occurs when nurse bees become foragers...
September 18, 2017: Journal of Insect Physiology
https://www.readbyqxmd.com/read/28932770/potential-distribution-dataset-of-honeybees-in-indian-ocean-islands-case-study-of-zanzibar-island
#3
Sizah Mwalusepo, Eliud Muli, Kiatoko Nkoba, Everlyn Nguku, Joseph Kilonzo, Elfatih M Abdel-Rahman, Tobias Landmann, Asha Fakih, Suresh Raina
Honeybees (Apis mellifera) are principal insect pollinators, whose worldwide distribution and abundance is known to largely depend on climatic conditions. However, the presence records dataset on potential distribution of honeybees in Indian Ocean Islands remain less documented. Presence records in shape format and probability of occurrence of honeybees with different temperature change scenarios is provided in this article across Zanzibar Island. Maximum entropy (Maxent) package was used to analyse the potential distribution of honeybees...
October 2017: Data in Brief
https://www.readbyqxmd.com/read/28921711/foxp-expression-identifies-a-kenyon-cell-subtype-in-the-honeybee-mushroom-bodies-linking-them-to-fruitfly-%C3%AE-%C3%AE-c-neurons
#4
Adriana Schatton, Constance Scharff
The arthropod mushroom bodies (MB) are a higher order sensory integration center. In insects, they play a central role in associative olfactory learning and memory. In Drosophila melanogaster (Dm), the highly ordered connectivity of heterogeneous MB neuron populations has been mapped using sophisticated molecular genetic and anatomical techniques. The MB-core subpopulation was recently shown to express the transcription factor FoxP with relevance for decision-making. Here we report the development and adult distribution of a FoxP-expressing neuron population in the MB of honeybees (Apis mellifera, Am) using in situ hybridization and a custom-made antiserum...
September 16, 2017: European Journal of Neuroscience
https://www.readbyqxmd.com/read/28917645/anti-fibrinolytic-and-anti-microbial-activities-of-a-serine-protease-inhibitor-from-honeybee-apis-cerana-venom
#5
Jie Yang, Kwang Sik Lee, Bo Yeon Kim, Yong Soo Choi, Hyung Joo Yoon, Jingming Jia, Byung Rae Jin
Bee venom contains a variety of peptide constituents, including low-molecular-weight protease inhibitors. While the putative low-molecular-weight serine protease inhibitor Api m 6 containing a trypsin inhibitor-like cysteine-rich domain was identified from honeybee (Apis mellifera) venom, no anti-fibrinolytic or anti-microbial roles for this inhibitor have been elucidated. In this study, we identified an Asiatic honeybee (A. cerana) venom serine protease inhibitor (AcVSPI) that was shown to act as a microbial serine protease inhibitor and plasmin inhibitor...
September 14, 2017: Comparative Biochemistry and Physiology. Toxicology & Pharmacology: CBP
https://www.readbyqxmd.com/read/28916947/honey-bees-possess-a-polarity-sensitive-magnetoreceptor
#6
Veronika Lambinet, Michael E Hayden, Chloe Reid, Gerhard Gries
Honey bees, Apis mellifera, exploit the geomagnetic field for orientation during foraging and for alignment of their combs within hives. We tested the hypothesis that honey bees sense the polarity of magnetic fields. We created an engineered magnetic anomaly in which the magnetic field generally either converged toward a sugar reward in a watch glass, or away from it. After bees in behavioral field studies had learned to associate this anomaly with a sugar water reward, we subjected them to two experiments performed in random order...
September 15, 2017: Journal of Comparative Physiology. A, Neuroethology, Sensory, Neural, and Behavioral Physiology
https://www.readbyqxmd.com/read/28916631/experience-during-early-adulthood-shapes-the-learning-capacities-and-the-number-of-synaptic-boutons-in-the-mushroom-bodies-of-honey-bees-apis-mellifera
#7
Amélie Cabirol, Rufus Brooks, Claudia Groh, Andrew B Barron, Jean-Marc Devaud
The honey bee mushroom bodies (MBs) are brain centers required for specific learning tasks. Here, we show that environmental conditions experienced as young adults affect the maturation of MB neuropil and performance in a MB-dependent learning task. Specifically, olfactory reversal learning was selectively impaired following early exposure to an impoverished environment lacking some of the sensory and social interactions present in the hive. In parallel, the overall number of synaptic boutons increased within the MB olfactory neuropil, whose volume remained unaffected...
October 2017: Learning & Memory
https://www.readbyqxmd.com/read/28916146/chinese-sacbrood-virus-infection-in-asian-honey-bees-apis-cerana-cerana-and-host-immune-responses-to-the-virus-infection
#8
Liu Shan, Wang Liuhao, Guo Jun, Tang Yujie, Chen Yanping, Wu Jie, Li Jilian
Chinese Sacbrood virus (CSBV) is a positive-stranded RNAvirus that infects both the European honey bee (Apis mellifera) and the Asian honey bee (A. cerana). However, CSBV has much more devastating effects on Asian honey bees than on European honey bees, posing a serious threat to the agricultural and natural ecosystems that rely on A. cerana for pollination service. Using quantitative RT-PCR method, we conducted studies to examine the CSBV infection in Asian honey bee colonies and immune responses of individual bees in response to CSBV infection...
September 12, 2017: Journal of Invertebrate Pathology
https://www.readbyqxmd.com/read/28912693/octopamine-underlies-the-counter-regulatory-response-to-a-glucose-deficit-in-honeybees-apis-mellifera
#9
Christina Buckemüller, Oliver Siehler, Josefine Göbel, Richard Zeumer, Anja Ölschläger, Dorothea Eisenhardt
An animal's internal state is a critical parameter required for adaptation to a given environment. An important aspect of an animal's internal state is the energy state that is adjusted to the needs of an animal by energy homeostasis. Glucose is one essential source of energy, especially for the brain. A shortage of glucose therefore triggers a complex response to restore the animal's glucose supply. This counter-regulatory response to a glucose deficit includes metabolic responses like the mobilization of glucose from internal glucose stores and behavioral responses like increased foraging and a rapid intake of food...
2017: Frontiers in Systems Neuroscience
https://www.readbyqxmd.com/read/28912256/mitochondrial-capacity-oxidative-damage-and-hypoxia-gene-expression-are-associated-with-age-related-division-of-labor-in-honey-bee-apis-mellifera-l-workers
#10
Mário S Cervoni, Carlos A M Cardoso-Júnior, Giovana Craveiro, Anderson de O Souza, Luciane C Alberici, Klaus Hartfelder
During adult life, honeybee workers undergo a succession of behavioral states. Nurses bees perform tasks inside the nest, and when they are about 2-3 weeks old they initiate foraging. This switch is associated with alterations in diet, and with the levels of juvenile hormone and vitellogenin circulating in hemolymph. Less clear is whether this behavioral maturation involves major changes at the cellular level, such as mitochondrial activity and the redox environment in the head, thorax and abdomen. Using high-resolution respirometry, biochemical assays and RT-qPCR, we evaluated the association of these parameters with this behavioral change...
September 14, 2017: Journal of Experimental Biology
https://www.readbyqxmd.com/read/28900241/propolis-envelope-in-apis-mellifera-colonies-supports-honey-bees-against-the-pathogen-paenibacillus-larvae
#11
Renata S Borba, Marla Spivak
Honey bees have immune defenses both as individuals and as a colony (e.g., individual and social immunity). One form of honey bee social immunity is the collection of antimicrobial plant resins and the deposition of the resins as a propolis envelope within the nest. In this study, we tested the effects of the propolis envelope as a natural defense against Paenibacillus larvae, the causative agent of American foulbrood (AFB) disease. Using colonies with and without a propolis envelope, we quantified: 1) the antimicrobial activity of larval food fed to 1-2 day old larvae; and 2) clinical signs of AFB...
September 12, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28899513/mechanisms-underlying-the-wound-healing-potential-of-propolis-based-on-its-in-vitro-antioxidant-activity
#12
Xue-Ping Cao, Yi-Fan Chen, Jiang-Lin Zhang, Meng-Meng You, Kai Wang, Fu-Liang Hu
BACKGROUND: Propolis is a resinous substance collected by honeybees, Apis mellifera, from various plant sources. Having various pharmacological and biological activities, it has been used in folk medicine and complementary therapies since ancient times. PURPOSE: To evaluate the effects and underlying mechanism of the protective effects of the ethanol extract of Chinese propolis (EECP) on L929 cells injured by hydrogen peroxide (H2O2). STUDY DESIGN: The wound healing activities of EECP in L929 cells with H2O2-induced damage were investigated...
October 15, 2017: Phytomedicine: International Journal of Phytotherapy and Phytopharmacology
https://www.readbyqxmd.com/read/28898258/antioxidant-and-cytotoxic-activity-of-propolis-of-plebeia-droryana-and-apis-mellifera-hymenoptera-apidae-from-the-brazilian-cerrado-biome
#13
Thaliny Bonamigo, Jaqueline Ferreira Campos, Alex Santos Oliveira, Heron Fernandes Vieira Torquato, José Benedito Perrella Balestieri, Claudia Andrea Lima Cardoso, Edgar Julian Paredes-Gamero, Kely de Picoli Souza, Edson Lucas Dos Santos
Propolis is a complex bioactive mixture produced by bees, known to have different biological activities, especially in countries where there is a rich biodiversity of plant species. The objective of this study was to determine the chemical composition and evaluate the antioxidant and cytotoxic properties of Brazilian propolis from the species Plebeia droryana and Apis mellifera found in Mato Grosso do Sul, Brazil. In the ethanolic extracts of P. droryana propolis (ExEP-P) and A. mellifera (ExEP-A) acids, phenolic compounds, terpenes and tocopherol were identified as major compounds...
2017: PloS One
https://www.readbyqxmd.com/read/28889990/glandular-sources-of-pheromones-used-to-control-host-workers-apis-mellifera-scutellata-by-socially-parasitic-workers-of-apis-mellifera-capensis
#14
Olabimpe O Okosun, Christian W W Pirk, Robin M Crewe, Abdullahi A Yusuf
Pheromonal control by the honey bee queen is achieved through the use of secretions from diverse glandular sources, but the use of pheromones from a variety of glandular sources by reproductively dominant workers, has not previously been explored. Using the social parasite, Apis mellifera capensis clonal worker we studied the diversity of glandular sources used for pheromonal control of reproductively subordinate A. m. scutellata workers. To determine whether pheromones from different glandular sources are used by reproductively active workers to achieve dominance and evaluate the degree of pheromonal competition between workers of the two sub-species, we housed groups of workers of the two sub-species together in cages and analysed mandibular and tergal gland secretions as well as, ovarian activation status of each worker after 21days...
September 7, 2017: Journal of Insect Physiology
https://www.readbyqxmd.com/read/28889361/brevibacillus-laterosporus-isolated-from-the-digestive-tract-of-honeybees-has-high-antimicrobial-activity-and-promotes-growth-and-productivity-of-honeybee-s-colonies
#15
Jamal M Khaled, Fahd A Al-Mekhlafi, Ramzi A Mothana, Naiyf S Alharbi, Khalid E Alzaharni, Anwar H Sharafaddin, Shine Kadaikunnan, Ahmed S Alobaidi, Noofal I Bayaqoob, Marimuthu Govindarajan, Giovanni Benelli
The development of novel antimicrobial drugs, as well as the discovery of novel compounds able to promote honeybee's growth, represents major challenges for modern entomology. The main aim of this study was to investigate whether Brevibacillus laterosporus isolated from the digestive tract of Saudi honeybees, Apis mellifera, was able to stimulate colony strength parameters of honeybees and to evaluate its ability to produce antimicrobial agents. Honeybees were collected in Dirab, Riyadh Region, Saudi Arabia, and microorganisms were isolated and identified by 16S ribosomal RNA analysis...
September 9, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28879772/brain-membrane-proteome-and-phosphoproteome-reveal-molecular-basis-associating-with-nursing-and-foraging-behaviors-of-honeybee-workers
#16
Bin Han, Yu Fang, Mao Feng, Han Hu, Yue Hao, Chuan Ma, Xinmei Huo, Lifeng Meng, Xufeng Zhang, Fan Wu, Jianke Li
The brain is a vital organ in regulating complex social behaviors of honeybees including learning and memory. Knowledge of how brain membrane proteins and their phosphorylation underlie the age-related behavioral polyethism is still lacking. A hitherto age-resolved brain membrane proteome and phosphoproteome were reported in adult worker bees from two strains of honeybee (Apis mellifera ligustica): Italian bee (ITB) and Royal Jelly bee (RJB), a line selected from ITB for increased RJ outputs over 4 decades...
September 7, 2017: Journal of Proteome Research
https://www.readbyqxmd.com/read/28877227/hemocyte-mediated-phagocytosis-differs-between-honey-bee-apis-mellifera-worker-castes
#17
Eva Marit Hystad, Heli Salmela, Gro Vang Amdam, Daniel Münch
Honey bees as other insects rely on the innate immune system for protection against diseases. The innate immune system includes the circulating hemocytes (immune cells) that clear pathogens from hemolymph (blood) by phagocytosis, nodulation or encapsulation. Honey bee hemocyte numbers have been linked to hemolymph levels of vitellogenin. Vitellogenin is a multifunctional protein with immune-supportive functions identified in a range of species, including the honey bee. Hemocyte numbers can increase via mitosis, and this recruitment process can be important for immune system function and maintenance...
2017: PloS One
https://www.readbyqxmd.com/read/28877178/to-be-on-the-safe-site-ungroomed-spots-on-the-bee-s-body-and-their-importance-for-pollination
#18
Laura Koch, Klaus Lunau, Petra Wester
Flower-visiting bees collect large quantities of pollen to feed their offspring. Pollen deposited in the bees' transport organs is lost for the flowers' pollination. It has been hypothesised that specific body areas, bees cannot groom, serve as 'safe sites' for pollen transfer between flowers. For the first time, we experimentally demonstrated the position, area and pollen amount of safe sites at the examples of Apis mellifera and Bombus terrestris by combining artificial contamination of the bees' body with pine or sunflower pollen and the subsequent bees' incomplete grooming...
2017: PloS One
https://www.readbyqxmd.com/read/28875541/gene-duplication-and-the-evolution-of-phenotypic-diversity-in-insect-societies
#19
Linh M Chau, Michael A D Goodisman
Gene duplication is an important evolutionary process thought to facilitate the evolution of phenotypic diversity. We investigated if gene duplication was associated with the evolution of phenotypic differences in a highly social insect, the honeybee Apis mellifera. We hypothesized that the genetic redundancy provided by gene duplication could promote the evolution of social and sexual phenotypes associated with advanced societies. We found a positive correlation between sociality and rate of gene duplications across the Apoidea, indicating that gene duplication may be associated with sociality...
September 6, 2017: Evolution; International Journal of Organic Evolution
https://www.readbyqxmd.com/read/28872253/genome-wide-scans-between-two-honeybee-populations-reveal-putative-signatures-of-human-mediated-selection
#20
M Parejo, D Wragg, D Henriques, A Vignal, M Neuditschko
Human-mediated selection has left signatures in the genomes of many domesticated animals, including the European dark honeybee, Apis mellifera mellifera, which has been selected by apiculturists for centuries. Using whole-genome sequence information, we investigated selection signatures in spatially separated honeybee subpopulations (Switzerland, n = 39 and France, n = 17). Three different test statistics were calculated in windows of 2 kb (fixation index, cross-population extended haplotype homozygosity and cross-population composite likelihood ratio) and combined into a recently developed composite selection score...
September 4, 2017: Animal Genetics
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