نتایج جستجو برای: cleptoparasitic bee
تعداد نتایج: 13613 فیلتر نتایج به سال:
Bee venom contains a variety of peptides and enzymes, including serine proteases. While the presence of serine proteases in bee venom has been demonstrated, the role of these proteins in bee venom has not been elucidated. Furthermore, there is currently no information available regarding the melanization response or the fibrin(ogen)olytic activity of bee venom serine protease, and the molecular...
Plant-bee visitor communities are complex networks. While studies show that deleting nodes alters network topology, predicting these changes in the field remains difficult. Here, a simple trait-based approach is tested for predicting bee community composition following disturbance. I selected six fields with mixed cover of flower species with shallow (open) and deep (tube) nectar access, and re...
Little information is available regarding the adverse effects of pesticides on natural honey bee populations. This study highlights the detrimental effects of pesticides on honey bee olfaction through behavioural studies, scanning electron microscopic imaging of antennal sensillae and confocal microscopic studies of honey bee brains for calcium ions on Apis cerana, a native Indian honey bee spe...
Graph Coloring, one of the most challenging combinatorial problems, finds applicability in many real-world tasks. In this work we have developed a new artificial bee colony algorithm (called O-BEE-COL) for solving this problem. The special features of the proposed algorithm are (i) a SmartSwap mutation operator, (ii) an optimized GPX operator, and (iii) a temperature mechanism. Various studies ...
Background: Human has encountered lots of pathogen and non-pathogenic agents all over the history and has used lots of methods for the control and treatment of such diseases. Apitherapy is one of such measures. Method: This article is a review one. The related investigations were searched from websites and reliable published texts. Different databases were explored based on appropriate key wo...
We present a case report of a Special Operations Soldier who developed anaphylaxis as a consequence of a bee sting, resulting in compromise of the operation. We review the current literature as it relates to the pathophysiology of the disease process, its diagnosis, and its management. An evidence-based field treatment algorithm is suggested.
totally, 3200 and 320 young worker bees were investigated morphologically and molecularly respectively. the four important honey bee microsatellite loci, a24, a28, a29, a113, indicated a considerable level of genetic diversity among the nation’s northwest honey bee populations and, considering average number of alleles per locus (3.25-5.75) and, average expected heterozygosity (0.445-0.701) hig...
Using uniplex RT-PCR we screened honey bee colonies for the presence of several bee viruses, including black queen cell virus (BQCV), deformed wing virus (DWV), Kashmir bee virus (KBV), and sacbrood virus (SBV), and described the detection of mixed virus infections in bees from these colonies. We report for the first time that individual bees can harbor four viruses simultaneously. We also deve...
Abstract: Oxalic acid dihydrate is used to treat varroosis of Apis mellifera. This study investigates lethal and sublethal effects of oxalic acid dihydrate on individually treated honeybees kept in cages under laboratory conditions as well as the distribution in the colony. After oral application, bee mortality occurred at relatively low concentrations (No Observed Adverse Effect Level (NOAEL) ...
In face of a dramatic decline of wild bee species in many rural landscapes, potential conservation functions of urban areas gain importance. Yet effects of urbanization on pollinators, and in particular on wild bees, remain ambiguous and not comprehensively understood. This is especially true for amenity grassland and extensively managed wastelands within large-scale residential housing areas. ...
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