| [use of the products of bee-keeping in dermatology]. | | 1981 | 7027677 |
| [clinical manifestations of juvenile chronic arthritis (author's transl)]. | the most outstanding clinical, laboratory and evolutive features of 119 patients with juvenile chronic arthritis were studied. according to the onset of the disease, these patients have bee divided into three subtypes, following the criteria set-up by the eular for the diagnosis and classification of patients with juvenile chronic arthritis. among the 119 patients studied, 29.4% had a systemic onset, 37.8% a polyarticular onset and 32.7% a pauciarticular onset. the relationship between female an ... | 1981 | 6976142 |
| desensitisation for bee sting reactions. | | 1981 | 6942319 |
| immunisation against bee and wasp stings. | | 1981 | 7238298 |
| immunochemistry of apamin--bee venom neurotoxin--i. radioimmunoassay with apamin and its derivatives. | | 1981 | 7311983 |
| diffusion and consumption of oxygen in the superfused retina of the drone (apis mellifera) in darkness. | double-barreled o2 microelectrodes were used to study o2 diffusion and consumption in the superfused drone (apis mellifera) retina in darkness at 22 degrees c. po2 was measured at different sites in the bath and retinas. it was found that diffusion was essentially in one dimension and that the rate of o2 consumption (q) was practically constant (on the macroscale) down to po2 s less than 20 mm hg, a situation that greatly simplified the analysis. the value obtained for q was 18 +/- 0.7 (sem) mic ... | 1981 | 7264598 |
| [results with acaricide k 79 (chlordimeform hydrochloride) in messen against honeybee varroatosis]. | | 1981 | 7016494 |
| nasonov pheromone of the honey bee,apis mellifera l. (hymenoptera, apidae). part iii. : regulation of pheromone composition and production. | gc and gc-ms analyses of the multicomponent nasonov pheromone of the honey bee, and of the air above insects releasing the pheromone, show that constant composition is maintained during release, despite differing volatilities of the components. the regulating mechanism may involve a specific enzyme process, detected in excised nasonov glands, which converts the major component geraniol into the more volatile (e)-citral. analysis of honey bees of known ages and at different times of year shows th ... | 1981 | 24420593 |
| energetics of honeybee swarm thermoregulation. | honeybee swarms regulate their core temperature at a high set point (near 36 degrees c) and the mantle at a low set point (near 15 degrees c). the temperature gradient from core to mantle permits considerable energy economy, and it is abolished only shortly before swarm takeoff. | 1981 | 17737212 |
| individual recognition and learning of queen odors by worker honeybees. | a honeybee queen is usually attacked if she is placed among the workers of a colony other than her own. this rejection occurs even if environmental sources of odor, such as food, water, and genetic origin of the workers, are kept constant in laboratory conditions. the genetic similarity of queens determines how similar their recognition characteristics are; inbred sister queens were accepted in 35% of exchanges, outbred sister queens in 12%, and nonsister queens in 0%. carbon dioxide narcosis re ... | 1981 | 16593008 |
| cricopharyngeal myotomy. | cricopharyngeal myotomy as an independent procedure has bee performed on 11 patients with a variety of neuromuscular disorders suffering from dysphagia localized to the neck. there was dramatic improvement in nine with one failure and one death from pre-existing pneumonia. the selection of patients for this operation is based on manometric studies. | 1981 | 7241630 |
| energy expenditure in patients with inflammatory bowel disease. | the basal energy expenditure (bee) calculated from the harris-benedict equation was compared with the resting energy expenditure (ree) measured by indirect calorimetry in 12 consecutive hospitalized patients with inflammatory bowel disease. the bee proved to be equivalent to the ree in the prediction of daily caloric requirements. patients weighing less than 90% of their ideal body weight had significantly increased energy requirements on a per-kilogram-weight basis as compared with those weighi ... | 1981 | 7213002 |
| [identification of some strains of yeasts in the intestine of the working bee (apis melifera l.) from romania]. | | 2006 | 7197908 |
| clearance of extracellular potassium: evidence for spatial buffering by glial cells in the retina of the drone. | work with ion-selective microelectrodes on the retina of the honeybee drone has shown that potassium is released from photoreceptors during activity and enters glial cells. measurements of the extracellular voltage gradients indicate that, in this preparation, currents flowing through the glial cells in the 'spatial buffer' pattern account for a large fraction of the glial k+ entry in the active region of the tissue. | 1981 | 6261870 |
| demography and life history characteristics of two honey bee races (apis mellifera). | intra-colony demography and life history characteristics of neotropical africanized and temperate european honey bearaces were compared under simulated feral conditions. major differences in colony demography were found which nevertheless resulted in some similar reproductive characteristics. european colonies were larger than africanized colonies, had more rapid initral growth rates of worker populations, showed better survivorship of brood and adult workers, and differed in patterns of worker ... | 1981 | 28309760 |
| pheromonal cues direct mate-seeking behavior of malecolletes cunicularius (hymenoptera: colletidae). | males of the vernal ground nesting bee,colletes cunicularius, actively search their nesting aggregations for emerging virgin females. males often detect and unearth preemergent virgin males and females which have not yet dug up to the soil surface. field experiments indicate that the odors from one unmated individual are sufficient to both excite males and direct their excavation of the virgin bee. a volatile component of this species' mandibular gland secretion, linalool, increases flight activ ... | 1981 | 24420488 |
| dufour's gland secretion in the cell linings of bees (hymenoptera: apoidea). | the volatile chemicals, detectable by coupled capillary gas chromatography-mass spectrometry, in the nest cell linings of four species in the bee generacolletes, andrena, andlasioglossum are identical with, and limited to, the volatile components present in the dufour's gland of females, suggesting this source for some of their cell-lining constituents. the extractable material that lines the cells oftrachusa byssina, in contrast, is derived frompinus resin, to which it can be chemically traced. | 1981 | 24420485 |
| the nasonov pheromone of the honeybeeapis mellifera l. (hymenoptera, apidae). part ii. bioassay of the components using foragers. | the nasonov pheromone of the honeybee comprises seven components, (z)-citral, nerol, geraniol, nerolic acid, geranic acid, and (e,e)-farnesol. bioassay of individual components showed each attracted foraging bees. a mixture of components in proportions present in the honeybee was as attractive as the natural secretion, and each component contributed to the attractiveness of the mixture. honeybees responded anemotactically to the source of nasonov odor. the presence of footprint pheromone enhance ... | 1981 | 24420468 |
| allergy to bee sting. | | 1981 | 7247852 |
| the prognostic significance of specific igg antibodies in insect sting allergy. | specific igg antibodies against bee venom and bee venom components were studied in the serum of 40 bee-sting patients, 60 bee keepers, and 31 control subjects. the highest titres were observed in successfully hypothesized patients and in bee keepers. subclass-typing in bee-sting allergic patients showed the highest antibody levels in subclass igg2, followed by igg3, igg 4 and igg1. during hyposensitization, a rise in specific igg antibodies in all subclasses and against bee venom and all its com ... | 1981 | 7215389 |
| factors influencing the toxicity and antigenicity of detoxified apis mellifera venom. | | 1981 | 7268110 |
| a comparative structural study of apamin and related bee venom peptides. | secondary structure analysis of apamin, mast cell degranulating peptide, tertiapin and secapin has been attempted, based on parameters produced by levitt (biochemistry (1978) 17, 4277--4285). the structural model, recently advanced for apamin, based on chou and fasman's parameters was confirmed. the predicted structure for mast cell degranulating peptide is almost spherical with the eight positive centres evenly distributed over the surface. on the basis of this analysis and related spectroscopi ... | 1981 | 7213796 |
| nephrotic syndrome developing after bee stings. | we have described a case, with renal biopsy findings and serologic studies, of a patient who had the nephrotic syndrome after sustaining multiple bee stings and who demonstrated a favorable response to steroid therapy. bee stings have previously been implicated in the development of this syndrome, though the reported cases in the literature are poorly documented. | 1981 | 7455752 |
| [comparative studies of plans for controlling american foulbrood in public aviaries]. | comparative testing was carried out on two control programmes against american foul brood in the public apiaries and honey-producing enterprises. a total of 19 apiaries with 2580 bee colonies were used in the experiments. it was found that there was an inapparent epizootic process in such apiaries, owing to which the destruction of the apparently affected honeybee colonies, without applying special measures to the occasionally normal ones did not interrupt the development of the disease. it is s ... | 1981 | 7340114 |
| effect of papain of bee venom toxicity. | | 1981 | 7336446 |
| biological effects of a 765-kv transmission line: exposures and thresholds in honeybee colonies. | honeybee colonies exposed under a 765-kv, 60-hz transmission line at 7 kv/m show the following sequence of effects: 1) increased motor activity with transient increase in hive temperature; 2) abnormal propolization; 3) impaired hive weight gain; 4) queen loss and abnormal production of queen cells; 5) decreased sealed brood; and 6) poor winter survival. when colonies were exposed at 5 different e fields (7, 5.5, 4.1, 1.8, and 0.65-0.85 kv/m) at incremental distances from the line, different thre ... | 1981 | 7326054 |
| fine structural localisation of acetylcholinesterase activity in the compound eye of the honeybee (apis mellifica l.). | acetylcholinesterase (ache) activity was demonstrated histochemically at the electron microscopic level in the compound eye of the worker bee (apis mellifica l.) by use of the method of lewis and shute (1969). all photoreceptor axons (short and long visual fibres) display ache activity. the reaction product is located in the axoplasm and at the plasma membrane. substantial amounts of the reaction product can be detected in the intercellular spaces between the visual fibres. along the visual fibr ... | 1981 | 7307058 |
| pontine haematoma: successful removal of two cases with review of 22 cases previously described in accessible literature. | two cases of operative evacuation of pontine haematomas are described in addition to 22 cases reported in the literature. clinical and neuroradiological findings indicate a brain stem lesion sometimes considered as an inoperable brain stem glioma. computer assisted tomography todate easily reveals such hematomas. successful operative results are generally obtained. this diagnosis must be considered when the onset of symptoms is progressive and young people are affected. we describe two young pat ... | 1981 | 7301143 |
| the horizontal magnetic dance of the honeybee is compatible with a single-domain ferromagnetic magnetoreceptor. | although honeybees are able to sense the geomagnetic field, very little is known about the method in which they are able to detect it. the recent discovery of biochemically precipitated magnetite (fe3o4) in bees, however, suggests the possibility that they might use a simple compass organelle for magnetoreception. if so, their orientation accuracy ought to be related to the accuracy of the compass, e.g. it should be poor in a weak background fields and enhanced in strong fields. when dancing to ... | 1981 | 7295911 |
| [presynaptic action of the phospholipases a2 from cobra and bee venoms deprived of enzymatic activity]. | | 1981 | 7285793 |
| phospholipase a2 from bee venom. | | 1981 | 7278678 |
| [significance of skin test and rast in the diagnosis of insect sting allergy (author's transl)]. | 46 patients who had an unusually severe reaction after bee or wasp sting were examined by skin testing and determination of specific ige antibodies. in this way 10 cases of bee venom hypersensitivity and 13 cases of wasp venom hypersensitivity were diagnosed. thus it may be claimed to prove the existence of specific ige antibodies in each patient who showed a systemic or intense local reaction after an insect sting. | 1981 | 7257429 |
| insect chromatophorotropic factors: the isolation of polypeptides from periplaneta americana and apis mellifera with melanophore-dispersing activity in the crustacean, uca pugilator. | | 1981 | 7215775 |
| the first optic ganglion of the bee. iv. synaptic fine structure and connectivity patterns of receptor cell axons and first order interneurones. | the synaptic relationships between and within receptor-cell axons (rcas), first-order interneurones (l-fibres) and accessory fibres (acc) in the first optic ganglion (the lamina) of the worker bee were studied in serial sections with golgi-em and routine transmission electron microscopy. the ommatidium contains nine retinular (photoreceptor) cells all of which project as rcas to a single optical cartridge in the lamina. six of the rcas end as short visual fibres (svf) in the lamina, while the re ... | 1981 | 7214488 |
| the sequestration, processing and retention of honey-bee promelittin made in amphibian oocytes. | messenger rnas from one kind of secretory cell can be introduced into the cytoplasm of another: the heterologous proteins formed by the recipient cell are usually processed and topologically segregated in the manner characteristic of the donor cell. xenopus oocytes injected with honey-bee venom gland rna provide some support for this generalization, but also reveal important exceptions to it. thus, the frog cell makes a small polypeptide whose partial sequence matches perfectly that of insect pr ... | 1981 | 7193578 |
| the second and third optic ganglia of the worker bee: golgi studies of the neuronal elements in the medulla and lobula. | the gross morphology and the fine-structural characteristics of neurones of the second and third optic ganglia of the honeybee apis mellifera were investigated light microscopically on the basis of golgi (selective silver)- and reduced silver preparations. the second optic ganglion, the medulla, is ovoid in shape and has a slightly convex distal surface and a slightly concave proximal surface. the medullar outer levels are characteristically composed of neuronal arrangements showing strict preci ... | 1981 | 7032703 |
| clinical parameters related to anorexia. | caloric intake was studied in 89 cancer patients who recorded diet diaries. twenty-five percent had caloric intake below their calculated basal energy expenditure (bee). an additional 45% had caloric intakes between 1.0 and 1.5 x bee. patients reported symptoms referable to the oronasal area and the gastrointestinal tract as possible factors in decreased eating. food intake is controlled by several categories of cues and one or more of these may be altered in cancer patients to decrease caloric ... | 1981 | 6955020 |
| [use of bee venom in medicine]. | | 1981 | 6914967 |
| [bee venom treatment of lumbosacral radiculitis]. | | 1981 | 6909086 |
| [treatment with bee products in acute and chronic pharyngo-laryngopathies]. | | 2004 | 6454224 |
| correlation of igg and ige antibody levels to honey bee venom allergens with protection to sting challenge. | a group of 25 honey bee venom allergic patients were treated with commercial honey bee venom at a monthly maintenance dose of 100 micrograms for approximately one year. at the end of one year 24 patients were intentionally challenged and one was accidentally challenged. three patients experienced significant systemic reactions to challenge and three experienced minor reactions. sera obtained before commencing therapy, at maintenance and before challenge were tested by radioallergosorbent test (r ... | 1981 | 6257151 |
| the honey-bee "dance language" and the foundations of biology and behavior. | | 1980 | 7242102 |
| studies on a peptide with red pigment-concentrating and hyperglycemic activity from the cephalic endocrine system of the honeybee, apis mellifera. | | 1980 | 7461444 |
| adrenaline for bee-stings. | | 1980 | 6107788 |
| immunological studies on bee-keepers: specific igg and subclass typing igg against bee venom and bee venom components. | specific ige antibodies against bee venom and its components were studied in 23 bee-keepers. the highest igg serum levels were observed for whole bee venom followed by phospholipase a. the serum levels of specific igg antibodies against melittin and mcd-peptide were lower, the lowest serum levels being observed for apamin. after a 5 month absence from bee-keeping a fall in the serum levels of igg antibodies was observed in all the bee-keepers studied. the investigation of the igg subclass antibo ... | 1980 | 7464005 |
| injectable adrenaline for bee stings. | | 1980 | 6107705 |
| on the significance of severe local reactions to hymenoptera stings. | of 317 patients with hypersensitivity to hymenoptera stings forty had severe local reactions (slr) only, fifty-nine reported severe local reactions before their first and seven after their last systemic reaction (sr). the probability to develop a life threatening systemic reaction when restung after a severe local reaction was calculated to be about 5%. in 80% of the patients with severe local reactions only, hypersensitivity to either bee or yellow jacket venom could be demonstrated by skin tes ... | 1980 | 7460262 |
| a critical evaluation of rast to venoms of hymenoptera. | rast to venoms were done on 108 sera. positive rast to one or more venoms of hymenoptera found in 51% (41/80) patients with a generalized reaction to the sting of hymenoptera and in 7% (2/28) of normal controls were critically evaluated. rast determinations for each sera were done in duplicate and results averaged. the laboratories were not told which sera belonged to patients with allergy to hymenoptera and which belonged to controls. in ten patients, one half of the original sera were saved an ... | 1980 | 7460261 |
| anaphylactic reactions to hymenoptera stings in asthmatic patients. | we evaluated 587 cases with generalized reactions to stings of hymenoptera. eighty of these patients and twenty-eight normal controls had radioallergosorbent tests (rast) to venoms of honey bee, yellow jacket, hornet, wasp and to phospholipase a. those patients with systemic reactions had a significantly greater frequency of positive rast than normal controls (51.3% vs. 7.1%, p < 0.001). the frequency of atopy (asthma/rhinitis) in case these 587 cases was only 22% and resembled the expected freq ... | 1980 | 7460260 |
| tests for linkage and other interactions in the honey bee. | no linkages were found in 31 new combinations of visible mutants, nor in 5 new combinations with the x locus, conducted mainly with eyeless (e), garnet (g), short (sh), truncate (tr), and wrinkled (wr). eyeless was epistatic to eye colors; cream (cr), and ivory (i) were epistatic to garnet (g). selective mortality was invariable with e, sh, and tr, and occasionally with bl, cd, and g. | 2010 | 7217660 |
| bee venom immunotherapy. | | 1980 | 7207358 |
| allergy to bee stings: a review. | | 1980 | 7017118 |
| mosaic male honey bees produced by queens inseminated with frozen spermatozoa. | mosaic male honey bees were found as the progeny of queens that had been inseminated with spermatozoa stored in liquid nitrogen. the origins of these mosaics and the genotype of their gametes were determined by using mutant markers. the mosaics probably developed from an egg pronucleus and a sperm pronucleus that did not unite after the latter had entered the egg. instead, both pronuclei produced haploid tissue independently. the three mosaics that were mated to queens all had mosaic testes. the ... | 2010 | 6938587 |
| next year's bee and wasp stings. | | 1980 | 6107595 |
| purification and chemical characterization of melittin and acetylated derivatives. | melittin, the main basic and hydrophobic peptide of bee venom, displays marked detergent-like properties. at high peptide concentration, and depending on salt and ph, it forms a tetramer. this is prevented by using urea. a purification procedure in presence of 4.0 m urea was developed to prepare melittin in its monomeric form, free of other venom constituents such as n alpha-formyl melittin, degradation products of peptides and phospholipase a2. nh2-residues on the melittin molecule were modifie ... | 1980 | 7437462 |
| [a case of bee sting nephrosis (author's transl)]. | | 1980 | 7462764 |
| bee venom immunotherapy. | | 1980 | 7411818 |
| structural studies of bee melittin. | | 1980 | 19431375 |
| the evolution of multiple mating behavior by honey bee queens (apis mellifera l.). | a model is presented showing that natural selection operating at the individual level can adequately explain the evolution of multiple mating behavior by honey bee queens. group selection need not be invoked. the fitness of a given female genotype is a function of the number of sex alleles in the population, the number of matings by an individual female and the specific parameters that determine the relationship of brood viability to individual fitness. even though the exact relationship is not ... | 1980 | 7203010 |
| diagnosis and treatment of anaphylactic reactions to hymenoptera stings in children. | forty-four children (mean age 9.6 years) with a history of an allergic reaction(s) to an insect sting and with positive insect venom skin tests were studied. ige antibodies (rast) to honeybee phospholipase a and to yellow jacket venom were found in the sera of 78% and 77%, respectively, of these patients. the patients were immunized with the appropriate venoms over a 15-week course and most were then subjected to an in-hospital sting; there was a 3% reaction rate (1/37). clinical protection as a ... | 1980 | 7400882 |
| pollen carryover, nectar rewards, and pollinator behavior with special reference to diervilla lonicera. | pollen carryover was measured in three species of bumble bee pollinated plants by counting the numbers of foreign grains applied to the stigmas of a series of flowers by bumble bees. deposition declined with the number of flowers visited in a roughly exponential fashion; most grains were deposited on the first few flowers, but some grains went much farther, the maximum carryover being 54 flowers. variation in deposition was very high. in diervilla lonicera, bees desposited significantly more gra ... | 1980 | 28310628 |
| ige and igg antibodies to bee venom as measured by a modification of the rast method. | the radioallergosorbent test (rast) has been widely used in studying allergy to hymenoptera stings, but with variable results. we report here a modification of the rast method which in a total of 157 bee keepers and family members, gave a close correlation between a positive rast, and a history of generalized (100%) or localized (95%) allergic reactions. there was no positive rast among forty-nine non-atopic control subjects but a striking finding was that 58% of non-allergic bee keepers had sig ... | 1980 | 7449075 |
| paradoxes of the honey-bee "dance language" hypothesis. | | 1980 | 7431952 |
| changes in morphology of dendritic spines on honeybee calycal interneurons associated with cumulative nursing and foraging experiences. | using the rapid golgi method, the morphology of dendritic spines was quantified in the calyxes of groups of newly emerged, nurse, and forager honeybees. these groups were studied because they represented distinct stages of behavioral development and cumulative experience which, according to recent vertebrate findings, may be associated with enlargement of the spine head and stem shortening. measurements were made of spine density, overall spine length, stem length, maximum head width, and profil ... | 1980 | 7378790 |
| modified basophil degranulation test in diagnosis of bee and wasp sting allergies. | a modified basophil degranulation test proved reliable and easily reproducible in the investigation of 50 patients with allergies to bee and/or wasp stings. its diagnostic value is comparable to that of the rast and it is, in addition, simpler, quicker and cheaper. its disadvantage is that it has to be performed within 24-36 hours after withdrawal of blood. | 1980 | 6160780 |
| honey bee immunotherapy. | | 1980 | 7412690 |
| alcoholic bouin fixation of insect nervous systems for bodian silver staining. ii. modified solutions. | a previously devised synthetic equivalent of 'aged alcoholic bouin (duboscq-brasil) fixative was modified in various ways to discover which of the chemical changes brought about by aging were important in improving fixation and staining. effects were tested with ventral nerve cord ganglia of the cockroach periplaneta americana, locust schistocerca gregaria, and honey bee apis mellifera. formation of reaction products, chiefly ethyl acetate and diethoxymethane, seemed to play only a subsidiary ro ... | 1980 | 6161444 |
| [studies on potassium transport through glial cell membranes (author's transl)]. | the retina of the honeybee drone is used as a model for the study of ion movements across the membranes of the glial cells caused by changes in the extracellular potassium concentration. the values found for changes in extracellular potential suggest that at least some of the potassium that enters glial cells in an active region of tissue is associated with an efflux of potassium from parts of the glial syncytium not affected by an increase in extracellular potassium concentration. in addition, ... | 1980 | 7421023 |
| [the effect of light on glycogen turnover in the retina of the honeybee drone (author's transl)]. | the retina of the compound eye of the drone (apis mellifera) comprises two distinct classes of cells: the photoreceptors and the glial cells. the photoreceptors contain mitochondriae and the photopigment (rhodopsin). the glial cells do not contain mitochondriae, but large amounts of glycogen granules. light stimulation causes intraglial glycogen metabolism to accelerate. since glial cells are not directly excitable by light, it is deduced that the absorption of light by rhodopsin must somehow ca ... | 1980 | 7421022 |
| [basic peptides in been venom, v. synthesis of four fragments from the sequence of apamin (author's transl)]. | the synthesis of the following four fragments by conventional methods is described: pos. 15-17 boc-cys(sipr)-gln(mbh)-gln(mbh) (i) pos. 10-14 boc-leu-cys(trt)-ala-arg(tos)-arg(tos) (ii) pos. 5-9 boc-ala-pro-glu(gammabzl)-thr-ala (iii) pos. 1-4 boc-cys(sipr)-asn-cys(sipr)-lys(z) (iv) these peptides are fragments of apamin, a basic, neurotoxic peptide from bee venom. the purity of the products was examined by thin-layer chromatography, amino acid and elemental analysis. it is possible to synthesiz ... | 1980 | 7380392 |
| fine structural aspects of the developing compound eye of the honey bee, apis mellifera l. | | 1980 | 7373705 |
| melittin forms crystals which are suitable for high resolution x-ray structural analysis and which reveal a molecular 2-fold axis of symmetry. | melittin is the principal protein component of bee venom and is believed to function as a lytic agent. in aqueous salt solution, it is a tetramer of identical peptides, each with 26 amino acid residues. although its amino acid composition is unusually nonpolar, and although it is believed to integrate into membranes while lysing cells, melittin is water-soluble at neutral ph. two crystal forms have been grown from solutions containing ammonium sulfate and sodium formate, and their x-ray diffract ... | 1980 | 7358689 |
| anthophora bees: unusual glycerides from maternal dufour's glands serve as larval food and cell lining. | the dufour's gland of anthophora abrupta, a solitary bee, secretes a complex mixture of liquid triglycerides containing one long-chain and two shortchain fatty acids. this is applied inside the earthen brood cells and added to the provision, where it is converted, perhaps by enzymes from the bee's saliva or gut, to solid diglycerides that are later eaten by the bee larvae. this use of dufour's gland secretion as food and its nutritive function are reminiscent of the royal jelly secreted by honey ... | 1980 | 17759841 |
| spore load of ascosphaera species on emerging adults of the alfalfa leafcutting bee, megachile rotundata. | the spore load of ascosphaera species spores on larval chalkbrood cadavers and newly emergent adults of the alfalfa leafcutting bee, megachile rotundata, was determined. the spore content of chalkbrood cadavers ranged from 3 x 10 to 5 x 10. adults emerging through zero to nine cadavers carried spores on all body parts examined by scanning electron microscopy. estimates of the total number of spores obtained from a series of adult washes ranged from 9 x 10 to 8 x 10. some adult males which emerge ... | 1980 | 16345532 |
| correlations between glucose-inhibition and control parameters of alpha-glucosidase kinetics in apis mellifica haemolymph (hymenoptera: insecta). | kinetics studies of haemolymph alpha-glucosidase inhibition by d. glucose led to general correlations between inhibition and control parameters, all over the honeybee development. maximum velocities are not affected by the inhibition, while affinity constants are always significantly increased, and hill coefficients tend to decrease, especially in for-aging adults and in prenymphs. in this later case, the 'n-type' effect tends to break the manifestation of the 'k-type' mechanism. | 1980 | 6989618 |
| sun compensation by bees. | in both their navigation and dance communication, bees are able to compensate for the sun's movement. when foragers are prevented from seeing the sun for 2 hours, they compensate by extrapolation, using the sun's rate of movement when last observed. these and other data suggest a time-averaging processing strategy in honey bee orientation. | 1980 | 17795641 |
| flight patterns of foraging bees relative to density of artificial flowers and distribution of nectar. | flight patterns of honeybees (apis mellifera ligustica) were quantified as the bees foraged among artificial 'flowers' for sugar solution ('nectar'). bees exhibited considerable directionality on successive flights which minimized repeat visits to flowers and they usually made short flights to nearby flowers, thus minimizing flight time. the change in direction on successive flights between flowers were independent of the number of immediately preceding consecutive rewarding visits but decreased ... | 1980 | 28310557 |
| structural properties of signal peptides and their membrane insertion. | structural properties of the amino acid sequences from 22 signal peptides have been analyzed and compared with peptides known to interact with biological membranes and liposomes, melittin, a lytic peptide of bee venom, and the non-polar c-terminal segment of cytochrome b5. all these peptides evidence a double amphipatic structure with an hydrophobic core of 9 to 24 amino acid residues and two charged polar ends. they all exhibit a high potential for making alpha-helix and, to a lesser degree, ex ... | 1980 | 17941179 |
| observations on the mitochondrial complex and head differentiation during spermiogenesis of the stingless bee melipona quadrifasciata anthidioides lep. | this study describes the transformations which occur in the mitochondria and nucleus of the melipona spermatid during the maturation process. | 1980 | 7428438 |
| a stereological analysis of developing egg chambers in the honeybee queen, apis mellifera. | a polytrophic ovariole of the queen honeybee, apis mellifera, is composed of a linear series of increasingly mature egg chambers, each consisting of an oocyte, an interconnected cluster of nurse cells, and a covering layer of follicle cells. this study describes changes in the volume of each of these components, as a function of the position of the egg chamber in the ovariole. an oocyte increases in volume from approximately 8.9 x 10(3) micrometers3 to approximately 9.6 x 10(6) micrometers3 over ... | 1980 | 7388928 |
| pesticides and honey bees: nectar and pollen contamination in alfalfa treated with dimethoate. | medicago sativa l. (leguminosae) sprayed with o,o-dimethyl s-(n-methylcarbamoylmethyl) phosphorodithioate (dimethoate) had only 0.5 ppm of dimethoate in pollen one day later, but 3 ppm in nectar one week later, and 1 ppm in nectar two weeks later. as little as 1 ppm added to syrup fed to caged workers of apis mellifera l. (apidae) inhibited cholinesterase and reduced survival. bees given a choice between treated and untreated syrups showed no preference; this suggests that the levels of dimethoa ... | 1980 | 7387183 |
| isolation and characterization of a water-soluble photopigment from honeybee compound eye. | | 1980 | 7192027 |
| [bee venom allergy (a model of an ige-mediated immediate-type allergy)]. | | 1980 | 7013279 |
| [specific immunotherapy of allergic diseases: application, effect and side-effects (author's transl)]. | based on the results of 500 patients suffering from bee-venom allergy, allergic rhinitis, bronchial asthma, atopic dermatitis and food allergy the necessary diagnostic procedures leading to specific immunotherapy are discussed. the immunstimulating potential of the vaccines varies from patient to patient and is decreased after some viral infections. good results are seen in young patients and when a low number of allergens is incorporated in the vaccine. side effects of minor importance are seen ... | 1980 | 6936976 |
| [inter-racial modifications of glycemia in the honeybee (apis mellifica l.)]. | the haemolymph levels of trehalose, glucose and fructose in foraging worker bees, have been compared in 4 different colonies of each of the following races: mellifica (m), ligustica (l), caucasica (c) and their hybrids. significant differences were found between races, with increasing values in the order: l leads to m leads to c leads to (l x c) x m; in the extreme cases, the amplitude of those differences reached a 1 to 4 range for glucose and 1 to 5 for fructose. the trehalose levels showed lo ... | 1980 | 6451277 |
| [dose/response relations of insulin and glucagon on honeybee glycemia]. | two hours after insulin-injection to emerging bees, hypoglucosemia occurs significantly with doses from 10(-2) to 10(2) ng per bee, with a maximum (-53 p. cent) from 0.1 to 1 ng, that is equivalent to 0.02 to 0.2 i.u./kg. hyperglucosemic effects of glucagon, 1 hour 30 mn after injection, are significant with doses from 10 to 500 ng per bee, with a maximum (+ 146 p. cent) for 100 ng, that is: 844 micrograms/kg. the trehalosemia shows lower variations in the same time. | 1980 | 6446353 |
| the exploitation of floral nectar in eucalyptus incrassata by honeyeaters and honeybees. | during october and november, 1977, a study of nectar production and nectarivore foraging in eucalyptus incrassata was conducted at wyperfeld national park in south-eastern australia in order to evaluate the extent to which introduced honeybees (apis mellifera) compete with native honeyeaters for floral nectar. data on nectar production, nectar availability, ambient air temperature and the numbers of visiting honeyeaters and honeybees were collected. most of the daily nectar production in e. incr ... | 1979 | 28310473 |
| immunotherapy in bee sting hypersensitivity. bee venom versus wholebody extract. | fifty-six patients with serologically confirmed bee sting hypersensitivity were treated for 1-3 years with either bee venom (bv) (31 patients) or wholebody extract (wbe) (25 per cent of re-exposed patients on bv-therapy showed a diminished reaction and 75% no reaction. thirty-three per cent of re-exposed patients on wbe-therapy developed an unchanged or worse reaction, 42% a diminished reaction and 25% no reaction at all. an initial rise in bv-specific ige was observed in bv-treated patients, wh ... | 1979 | 546252 |
| cancer mortality among beekeepers. | carcinogenic effects of bee venom were evaluated in a mortality study of 580 occupationally exposed beekeepers. the subjects were identified through obituary notices published between 1949 and 1978 in three journals of the u.s. beekeeping industry. death certificates of beekeepers were examined for causes of mortality, and proportionate mortality ratios were compared with those for the general u.s. population. beekeepers had a slightly lower than expected fraction of deaths from cancer. the defi ... | 1979 | 536856 |
| genetic component of bee odor in kin recognition. | the primitively social sweat bee, lasioglossum zephyrum, blocks the entry into its nest of most conspecifics from other colonies. laboratory inbreeding of these bees produced lines which showed a positive linear relationship between the coefficient of relationship of bees tested and how often they permitted non-nestmates to pass them. the most probable mechanism is a genetically determined odor coupled with a learned component by which guard bees discriminate between odors of close kin and other ... | 1979 | 17787485 |
| self-limited ttp-like syndrome after bee sting. | | 1979 | 573805 |
| [varroatosis--a new mite pest of the honeybee in europe]. | notes on spreading, constitution, diagnosis, and control of varroa jacobsonii oudemans, 1904, the causal agent of a new mite pest in european honey bees. | 1979 | 547745 |
| [effect of neurotoxins on mediator release from the motor nerve endings of the drosophila melanogaster larva]. | spontaneous miniature junctional potentials and induced by motor nerve stimulation junctional potentials were recorded in muscle fibres of the third instar drosophila larvae. presynaptically active neurotoxins isolated from the snake venoms (beta-bungarotoxin 4.5 x 10(-7) m, notexin and notechis-ii-51 x 10(-7) m, crotoxin 9 x 10(-8) m, phospholipase from the venom of cobra 4 x 10(-6) m did not induce any changes in transmitter release during 60--120 min of contact with drosophila preparation, al ... | 2014 | 42240 |
| energy budgets do balance-a comment on a paper by wightman and rogers. | in a recently published energy budget for the larvae of the leafcutter bee (wightman and rogers, oecologia (berl.) 36 (1978) 245-257) respiration as estimated by respirometry amounted to only 67% of the respiration as estimated from the difference between assimilation and production. in this note it is shown that this discrepancy seems to result from an incorrect value of the oxycalorific equivalent and that a more reasonable value makes the two estimates of respiration agree. | 1979 | 28309509 |
| comparison of the radioallergosorbent test to intradermal skin testing in the diagnosis of stinging insect venom allergy. | rast and skin tests were compared for five venoms in a group of 60 patients with histories of stinging insect allergy. twelve patients were skin test negative to all venoms and also rast negative. the 48 skin test positive patients gave an 88% correlation of rast and skin test with 92% of the skin test positive patients rast positive and 82% of the rast positive patients skin test positive. if patients strongly positive to honey bee showing positive rast to vespids with negative skin test were n ... | 1979 | 555595 |
| [prevention and measures for controlling bee varroatosis]. | | 1979 | 516405 |
| acute allergic reaction after composite pollen ingestion. | three patients are presented who ingested a health food known as "bee pollen" and who experienced an immediate allergic reaction. examination revealed that the bee pollen contained dandelion pollen, which belongs to the compositae family as does ragweed. in vivo and in vitro studies demonstrated that the patients were sensitive to several compositae family members, rather than to insect-derived antigens. in addition, radioallergosorbent inhibition studies confirmed the suspected cross-reactivity ... | 1979 | 479479 |
| the kinetic parameters of trehalase in whole and disrupted mitochondrial preparations from two insects with asynchronous muscle. | the kinetic parameters of trehalase in honey bee and flesh fly mitochondria were compared. the studies were carried out with whole mitochondria and with mitochondria disrupted in various ways and to different degrees. honey bee mitochondrial trehalase was significantly activated by lubrol wx treatment (30.0-fold), by high ph treatment (20.8-fold), and by a treatment consisting of 10 passes through a french press (37.9-fold) but not by the other treatments tried (salt, proteases, waring blender, ... | 1979 | 44213 |
| the continuity of thick filaments between sarcomeres in honey bee flight muscle. | one of the most frequently discussed problems of insect flight muscle morphology is the structure of the thick filaments, especially at the z line. many attempts have been to solve these problems but no unequivocal answers have been given so far. it is well known that physiological specialisation is accompanied by certain anatomical features in the myofibrillar level; the myofibrils have very short i bands in the resting state and the muscle acts under nearly isometric conditions. in this paper, ... | 1979 | 575916 |
| keeping a cool head: honeybee thermoregulation. | at high ambient temperatures, honeybees regulate head teriperature by evaporative cooling of regurgitated honeycrop contents. thoracic temperature is secondarily stabilized as heat flows from thorax to head by means of passive conduction and physiological facilitation resulting from accelerated blood flow. the mechanism permits flight at the extraordinarily high ambient temperature of 46 degrees c without overheating the head and thorax despite prodigious amounts of heat produced as a by-product ... | 1979 | 17750151 |