Publications
| Title | Abstract | Year Filter | PMID(sorted descending) Filter |
|---|
| defensive alkaloid in blood of mexican bean beetle (epilachna varivestis). | the blood of the mexican bean beetle (epilachna varivestis) contains a homotropane alkaloid, euphococcinine (1). the beetles 'reflex bleed' when disturbed, thereby deploying the alkaloid, which is provenly deterrent to spiders and ants. newly emerged adults lack the alkaloid, but the compound builds up to deterrent levels in their blood within days. eggs and larvae of epilachna are devoid of the compound. | 1986 | 3753941 |
| the development of defensive behavior against predation by army ants. | the development of defensive reaction in the ant novomessor albisetosus against predation by army ants is studied in the laboratory and field. two clusters of behavior emerge: escape with or without the brood, and aggressive defense. escape develops specifically as a reaction against army ants and not in the presence of other ant species. other behaviors develop with varying degrees of specificity toward army ants. all behaviors develop with age in workers isolated from experience with army ants ... | 1986 | 3732626 |
| defensive secretion of the tenebrionid beetle, blaps mucronata: physical and chemical determinants of effectiveness. | the primary components of the defensive secretions of blaps mucronata (tenebrionidae) are two quinones (methyl-p-benzoquinone and ethyl-p-benzoquinone) and the hydrocarbon 1-n-tridecene. the hydrocarbon is shown, by comparison with longer- and shorter-chain n-alkanes and 1-n-alkenes, to be optimally suited as carrier of the quinones, and as a surfactant that promotes spread of secretion over the beetle's body following discharge from the gland openings at the abdominal tip. as shown from repelle ... | 1987 | 3668879 |
| [therapy and clinicotoxicologic follow-up of tartar emetic poisoning caused by an ant insecticide in a small child]. | since some years lindane has been replaced by tartar emetic in a sweet tasting liquid against ants, of which a three year old girl drank nearly 50 ml containing 2.3 g tartar emetic. this is a multiple of the lethal dose for children. but this child survived. the course of the intoxication and its therapy are described. the levels of antimony were controlled in blood and urine. | 1987 | 3600675 |
| comparative enzymology of venoms from stinging hymenoptera. | venoms from 20 species of stinging hymenoptera, including nine species of ants and nine species of social wasps, were quantitatively analyzed for the following enzymic activities: phospholipase a, hyaluronidase, lipase, esterase, protease, acid phosphatase, alkaline phosphatase and phosphodiesterase. phospholipase and hyaluronidase were present in all the venoms, with activity levels generally higher among the wasps than the ants (p less than 0.05). lipase was present in high activity in several ... | 1986 | 3544339 |
| karyotypes, c-banding, and chromosomal location of active nucleolar organizing regions in tapinoma (hymenoptera, formicidae). | the haploid and diploid karyotypes of tapinoma erraticum (n = 8) and tapinoma nigerrimum (n = 9) were analyzed using c-banding and observation of nor sites. c-banding showed the existence of heterochromatin in the paracentromeric regions of all chromosomes. the analysis of nor sites in these species proved the existence of primary activity nor in one or two chromosomes, respectively, whereas the other chromosomes showed secondary activity nor, expressed only in a minority of cells. in both speci ... | 1988 | 3417142 |
| [seasonal occurrence of dicrocoelium dendriticum in intermediate hosts]. | epizootiological questions were studied on a permanent pasture of a farm situated in one of the dicrocoeliasis areas in the gdr during the 1986 grazing season. helicella obvia snails and formica fusca ants were found to be first and second intermediate hosts respectively. a total of 1,121 snails and 70 ants were dissected. the infestation rate with dicrocoelium dendriticum stages in snails decreased in summer after the high spring peak and increased again in autumn. paralysed ants were found onl ... | 1988 | 3415040 |
| impact of red imported fire ant (hymenoptera: formicidae) predation on horn flies (diptera: muscidae) in a cattle pasture treated with pro-drone. | 1988 | 3403766 | |
| human erythrocyte electrofusion kinetics monitored by aqueous contents mixing. | the kinetics of electrically induced fusion of human erythrocyte ghosts were monitored by the tb/dpa and ants/dpx fluorescence fusion assays. ghosts were aligned by dielectrophoresis using a 3-mhz 350-v/cm alternating field and were fused by single 15- or 50-microseconds electric field pulses of amplitude 2.5-5.0 kv/cm. fusion was detected immediately after the pulse. the peak fluorescence change due to fusion was always obtained within 7 s of pulse application, and was highest for a 5.0 kv/cm 1 ... | 1988 | 3390523 |
| la3+-induced fusion of phosphatidylserine liposomes. close approach, intermembrane intermediates, and the electrostatic surface potential. | the fusion of large unilamellar phosphatidylserine liposomes (ps luv) induced by la3+ has been monitored using the 1-aminoapthalene-3,6,8-trisulfonic acid/p-xylenebis(pyridinium bromide) (ants/dpx) fluorescence assay for the mixing of aqueous contents. the fusion event is extensive and nonleaky, with up to 95% mixing of contents in the fused liposomes. however, addition of excess edta leads to disruption of the fusion products in a way that implies the existence of metastable intermembrane conta ... | 1988 | 3382713 |
| rast-inhibition studies of the imported fire ant solenopsis invicta with whole body extracts and venom preparations. | whole body extracts of imported fire ants (ifawbe) are the only reagents currently available for diagnosis and immunotherapy of patients with anaphylaxis to these hymenoptera. to characterize better ifawbe of the species solenopsis invicta, we evaluated the sera of 29 patients with systemic or large local reactions to imported fire ant (ifa) stings. forty-eight percent (14/29) of these sting-sensitive patients were ifawbe rast positive (greater than or equal to 6% binding of total radioactivity ... | 1988 | 3379222 |
| a method for the manufacture of single barrel liquid ion-selective microelectrodes: an in situ study of ant venom ph. | a method for the manufacture of single barrel ion-sensitive microelectrodes, employing liquid ion-selective sensors, is described in detail. this method had proven reliable and repeatable for the manufacture of ph-sensitive microelectrodes using a liquid proton carrier. it is believed that this method has advantages over other published methods since it allows direct visualization and control of major steps during electrode fabrication and overcomes several problems often encountered using more ... | 1988 | 3357759 |
| interaction of erythrocyte protein 4.1 with phospholipids. a monolayer and liposome study. | we have studied the interaction of purified human erythrocyte protein 4.1 with phospholipid membranes by monitoring both the increase in surface pressure of monolayers at the air/water interface and the change in permeability in liposomes to fluorescent molecules, in the presence of protein 4.1. protein 4.1 penetrated into monolayers of brain phosphatidylserine (ps) and egg phosphatidylcholine (pc), even above surface pressures of 30 mn/m. protein 4.1 increased the permeability of negatively cha ... | 1988 | 3337803 |
| dicroceliasis (lancet fluke disease) in an hiv seropositive man. | dicroceliasis is an unusual zoonotic trematode infection caused by the lancet liver fluke, dicrocoelium dendriticum. grazing herbivores (usually sheep or cattle) are the definitive hosts. the life cycle proceeds through two intermediate hosts: the land snail and the field ant. human infection is acquired by consuming the field ant. this case report describes a human immunodeficiency virus-seropositive patient who presumably acquired this parasite from bottled water contaminated with ants. a brie ... | 1988 | 3336179 |
| modes of spontaneous chromosomal mutation and karyotype evolution in ants with reference to the minimum interaction hypothesis. | aspects of chromosomal mutation and karyotype evolution in ants are discussed with reference to recently accumulated karyological data, and to detailed karyotype analyses of several species or species complexes with low chromosome number and unusual chromosomal mutations (the complexes of myrmecia pilosula (smith) (n = 1, 5 or 9 to 16); m. piliventris smith (n = 2, 3-4, 17 or 32), and ponera scabra wheeler (n = 3 or 4, 2n = 7 or 8). translocations and robertsonian polymorphisms are confirmed to ... | 1988 | 3273765 |
| alkaloid venom of european ants in the genus monomorium. site of synthesis, identification and quantification. | the venom of the european ant monomorium is composed of five alkaloids: three 2.5 transdialkylpyrrolidines and two 2.5 transdialkylpyrrolines. the venom is synthesized by a glandular complex composed of a biramous external filamentous gland, and a single internal gland invaginated into the reservoir. external glands and the proximal two-thirds of the internal gland are composed of glandular units, with one glandular cell and one associated duct cell. glandular cells contain numerous giant mitoch ... | 1988 | 3268426 |
| direct fluorescence measurement of diffusional water permeability in the vasopressin-sensitive kidney collecting tubule. | a fluorescence method has been developed for accurate and instantaneous measurement of transepithelial diffusional water permeability (pd) in perfused kidney tubules based on the sensitivity of the fluorophore aminonapthelane trisulfonic acid (ants) to solution h2o/d2o content. the fluorescence of ants was 3.2-fold lower in an h2o buffer than in a d2o buffer. the response of ants fluorescence to a change in solution h2o/d2o content occurred in less than 1 ms and was due to a collisional quenchin ... | 1988 | 3224144 |
| [an elite for work for ants]. | 1988 | 3217688 | |
| the rostral nasal anatomy of two elephant shrews. | the nasal anatomy of elephantulus brachyrhynchus and e. myurus shows adaptations needed for a long, mobile snout with no special chemosensory features. olfactory and vomeronasal neuroepithelia do not extend rostral to the nasal opening of the incisive ducts. their fine structure presents no unusual features. separate dorsal, lateral and ventral cartilages and fenestrations in the septal cartilage permit snout flexibility. dorsal and ventral tubular glands extend the whole length of the snout und ... | 1988 | 3198474 |
| the ant, pachycondyla sennaarensis (mayr) as an intermediate host for the poultry cestode, raillietina tetragona (molin). | the role of several species of ants as intermediate hosts for poultry cestodes in the sudan was investigated by a search for cysticercoids in specimens from poultry houses in various localities in the country. pachycondyla sennaarensis, messor galla and acantholepis sp. were the only species collected from the areas surveyed. all these ants were examined for cysticercoids of poultry tapeworms but only p. sennaarensis was found to carry cysticercoids, all of which were identical to those of the p ... | 1988 | 3195046 |
| allergens in hymenoptera venom. xxi. cross-reactivity and multiple reactivity between fire ant venom and bee and wasp venoms. | the relationships between fire ant venom and bee and wasp venoms were explored by studying sera from five groups of subjects. group 1 included adults not allergic to any venoms and who were not exposed to fire ants. group 2 included adults with fire ant exposure who were not allergic to venoms. group 3 included patients with recent systemic reactions to fire ant venom. group 4 included patients allergic to bee and vespid venoms with no fire ant exposure. last, group 5 included patients allergic ... | 1988 | 3192866 |
| ants in the woodpile--a cause of explosion injury. | 1988 | 3187823 | |
| allergens of the imported fire ant. | a whole body extact (wbe) was prepared by saline extraction of ground imported fire ants (ifa). a serum pool from rabbits immunized with the wbe elicited 31 precipitates on crossed immunoelectrophoresis. crossed radioimmunoelectrophoresis was performed with sera from 26 rast ifa-positive subjects, 24 of whom were known for clinical hypersensitivity to ifa and two subjects, known to be hypersensitive to yellow jacket. radiostaining was obtained to 14 precipitates, some of which were judged to be ... | 1988 | 3171000 |
| [the use of tools by primates: definition, criteria and hypotheses of its appearance in anthropogenesis]. | the different approaches to the definition of "tool-using" and "tool" are discussed. the definitions of tool-using are given, the hypotheses of the tool-using origin in phylogenesis of primates: emotional, social tradition, playing, accumulations' objects are adduced. the modern data on tool-using for catching ants and termites, for cracking palm-nuts by wild chimpanzees under natural inhabitation, population and sex differences in tool-using are given. a conclusion has been made that tool-using ... | 1988 | 3132986 |
| primary culture of ant venom gland cells. | venom from the ant pseudomyrmex triplarinus reduces the symptoms and swelling of rheumatoid arthritis. the cells that produce the venom were dissected from larval and pupal ants and culture conditions studied. cell dissociation, with minimal amount of damage, was done with 0.25% trypsin at 4 degrees c with subsequent use of soybean trypsin inhibitor. a new medium was formulated and epidermal growth factor, fibroblast growth factor, insulin, camp, cgmp, and isoproterenol were beneficial. the opti ... | 1985 | 2991183 |
| leupeptin, a protease inhibitor, blocks insemination-induced flight muscle histolysis in the fire ant solenopsis. | the effect of the protease inhibitor leupeptin on flight muscle histolysis in queen fire ants was studied by electron microscopy. in untreated animals artificially inseminated, muscle involution was apparent at 6 hr post-insemination and complete by 24 hr post-insemination. however, in animals pre-treated with leupeptin and subsequently artificially inseminated, no morphologic evidence of flight muscle breakdown was seen at any interval between 6 and 24 hr post-insemination. such information app ... | 1985 | 2988153 |
| abscisic acid enhances aggregation and fusion of phospholipid vesicles. | the plant hormone abscisic acid (aba) is shown to enhance the aggregation and fusion of small unilamellar lipid vesicles composed of 80 mol% dimyristoylphosphatidylcholine (dmpc) and 20 mol% dimyristoylphosphatidylcholine (dmpe). aggregation and fusion did not occur with single component (100 mol%) dmpc vesicles. fusion was followed by two fundamentally different techniques, fluorescence resonance energy transfer which monitors intermixing of bilayers and ants-dpx which monitors intermixing of t ... | 1988 | 2972286 |
| the role of adenine nucleotide translocators in regulation of oxidative phosphorylation in heart mitochondria. | the regulative role of adenine nucleotide translocators (ants) in oxidative phosphorylation has been estimated by the titration of respiration of isolated rabbit heart mitochondria with carboxyatractyloside in the presence of a non-rate limiting creatine phosphokinase adp-regenerating system. it has been established that the respiration rate is not controlled by ants in the two extreme states, state 3 and state 4. on the other hand, at an intermediate respiration rate (30-70% of the state 3 resp ... | 1987 | 2822484 |
| liposome fusion catalytically induced by phospholipase c. | large unilamellar vesicles composed of phosphatidylcholine/phosphatidylethanolamine/cholesterol (50:25:25 mole ratio) were treated with phospholipase c. the early stages of phospholipid cleavage are accompanied by mixing of bilayer lipids (monitored by dequenching of octadecylrhodamine fluorescence) and leakage-free mixing of vesicle contents [measured by using 8-aminonaphthalene-1,3,6-trisulfonic acid (ants) and p-xylylenebis(pyridinium bromide) (dpx)]. these results are interpreted in terms of ... | 1989 | 2819074 |
| [pharaoh ants in hospitals and health centers]. | 1989 | 2762395 | |
| comparative study of temporal summation and response form in hymenopteran photoreceptors. | 1. temporal summation was measured in green-sensitive photoreceptors of seven hymenopteran species with various life styles: three bees, melipona quadrifasciata quadrifasciata, trigona spinnipes and bombus morio; one wasp, polistes canadensis; and three ants, pseudomyrmex phyllophilus, camponotus rufipes, and atta sexdens rubropilosa. in all species approximate agreement with bloch's law was confirmed. 2. critical durations (tc), which varied from 10 ms (pseudomyrmex) to 46 ms (atta), are discus ... | 1989 | 2746551 |
| [plasticity of the behavior of myrmica rubra ants during learning in a multi-alternative symmetric labyrinth]. | the ability was studied of myrmica rubra ants to change the habit of passing through a multialternative symmetric labyrinth at motivation of the care for posterity. in exams the location of reinforcement was changed: in the first exam the progeny was carried from both aim places to those symmetric to them relatively to labyrinth cross axis; in the second exam the reinforcement was left on one aim place non-preferred during learning. the first exam was passed by 62.5% of ants, the second--by 87.5 ... | 1989 | 2735136 |
| comparative study of brain morphology in ants. | brain morphology, with special attention to the three dimensional form of the corpora pedunculata, was studied in thirteen species of ants, representing four subfamilies of formicidae. the results can be summarized as follows. (1) the neural systems processing optic and olfactory information differ in the evolutionary history among the studied taxa. a positive correlation can be demonstrated in the phylogenetic history of the corpora pedunculata, central body, cerebral bridge and olfactory lobe, ... | 1989 | 2720368 |
| medical grand rounds. west virginia university health sciences center. bites and stings. part 1. spiders. | most animals can bite or sting. in narrowing the kingdom down to those that harm humans, the field still is vast. it would be interesting to explore the rich variety of pathology produced in us by moray eels, lionfish, sea urchins, jellyfish, sting rays, fire ants, kissing bugs, flies, lice, mosquitoes, ticks, mites, fleas, puss caterpillars, centipedes, snakes, dogs and cats, camels, and myriad other creatures including homo sapiens (not a trivial biter)--but for this grand rounds, the topic wi ... | 1989 | 2718467 |
| allergy to the venom of jumper and bull ants. | 1989 | 2716572 | |
| comparative studies on the protein composition of hymenopteran venom reservoirs. | the proteins of venom reservoirs from 25 hymenopteran species from 21 genera were investigated with regard to their protein composition and immunological similarities. it was found that low mol. wt proteins and polypeptides are typical for the venoms of ants, social wasps and bees. six species of ichneumonoid parasitic wasps lack these low mol. wt proteins. except for bee venoms none of the low mol. wt proteins contain mannose. the venoms of ichneumonoid parasites and ants contained primarily ac ... | 1989 | 2711410 |
| spectrum of bacterial pathogens transmitted by pharaoh's ants. | 1989 | 2709811 | |
| controversies on the subject of slave-raids in amazon ants (genus polyergus). | the paper contains a polemic with the view expressed by talbot, wilson and topoff and his co-workers, who maintain that the existence of scouts and their leading directing in slave-raids of the american polyergus' species is fully proved. in particular we do not agree with talbot's and wilson's argument that following by the amazons of the scent-trail prepared from the crushed bodies of their nestmates indicates that the amazon raids follow the trails of scouts. considering the results and notio ... | 1989 | 2700536 |
| mycetocyte symbiosis in insects. | 1. non-pathogenic microorganisms, known as mycetocyte symbionts, are located in specialized 'mycetocyte' cells of many insects that feed on nutritionally unbalanced or poor diets. the insects include cockroaches, cimicidae and lygaeidae (heteroptera), the homoptera, anoplura, the diptera pupiparia, some formicine ants and many beetles. 2. most mycetocyte symbionts are prokaryotes and a great diversity of forms has been described. none has been cultured in vitro and their taxonomic position is ob ... | 1989 | 2696562 |
| allergy to imported fire ants. | 1989 | 2688130 | |
| morphological changes in the ommatidia of an ant in the day and night states. | morphological changes in dioptric structures, in the position of screening pigments and in the microvillar arrangement of the rhabdom were observed in atta sexdens ant ommatidia exposed to different light/dark schedules. during the day there was a funneling of the crystalline cone and the pigments were close to the rhabdom. at night the crystalline cone became thicker and shorter than in the day state and the pigments moved away from the rhabdom. endogenous control for these changes was demonstr ... | 1989 | 2636013 |
| multiple stings by imported fire ants (solenopsis invicta), without systemic effects. | this is the first case report of imported fire ants invading a building and aggressively attacking a human being, resulting in multiple stings. this case illustrates that, although the venom has a high ld50 in mice, it does not induce toxic systemic effects in humans when the venom is introduced intradermally. | 1989 | 2567534 |
| simultaneous optical measurement of osmotic and diffusional water permeability in cells and liposomes. | a quantitative description of transmembrane water transport requires specification of osmotic (pf) and diffusional (pd) water permeability coefficients. methodology has been developed to measure pf and pd simultaneously on the basis of the sensitivity and rapid response of the fluorophore aminonaphthalenetrisulfonic acid (ants) to solution h2o/d2o content. cells loaded with ants in an h2o buffer were subjected to an inward osmotic gradient with a d2o buffer in a stopped-flow apparatus. the time ... | 1989 | 2540807 |
| brain 5-ht and inhibition of aggressive behavior in animals: 5-hiaa and receptor subtypes. | evolutionary constant serotonin (5-ht) neuronal systems evolved along medial brain structures; yet, wide variations in functionality characterize serotonergic systems in mediating aggressive responses in species ranging from lobsters, ants, electric fish, and rodents to primates. so far, the attempts to correlate cerebrospinal fluid (csf) 5-hydroxyindoleacetic acid (5-hiaa) levels with measures of aggression have revealed inverse, direct, or no correlations in different nonhuman primate species. ... | 1989 | 2483273 |
| alzheimer's neurofibrillary tangles contain unique epitopes and epitopes in common with the heat-stable microtubule associated proteins tau and map2. | ten monoclonal antibodies raised against alzheimer's neurofibrillary tangles (ants) were characterized for reactivity with heat-stable microtubule fractions from bovine and human brain. five of the antibodies showed very little reaction, but the other five reacted strongly with heat-stable microtubule associated proteins (maps). the proteins recognized by these antibodies have estimated molecular weights similar to those of known heat-stable maps, tau (52-68 kd) and map2 (200-250 kd). that the p ... | 1987 | 2433949 |
| two monoclonal antibodies recognize alzheimer's neurofibrillary tangles, neurofilament, and microtubule-associated proteins. | two monoclonal antibodies that recognize alzheimer's neurofibrillary tangles (ants), ad10 and ab18, have been characterized by immunoblotting against human and calf spinal cord neurofilament (nf) and calf brain microtubule preparations. both antibodies bind to the 200-kilodalton (kd) (nf-h) and 160-kd (nf-m) but not to the 68-kd (nf-l) nf triplet proteins. they also bind to high-molecular-weight microtubule-associated proteins (maps) and tau. ad10 immunostains map2 and map1 families, whereas ab1 ... | 1987 | 2432180 |
| monoclonal antibodies to alzheimer neurofibrillary tangles. 2. demonstration of a common antigenic determinant between ant and neurofibrillary degeneration in progressive supranuclear palsy. | neurofibrillary degeneration is an argyrophilic intraneuronal lesion found in several unrelated neurologic conditions. the relationship between different types of neurofibrillary tangles is investigated with two monoclonal antibodies raised against alzheimer neurofibrillary tangles (anti-ant). using the peroxidase-antiperoxidase technique, the authors demonstrate that neurofibrillary tangles of progressive supranuclear palsy, containing 15-nm straight filaments, share an antigenic determinant wi ... | 1985 | 2411143 |
| monoclonal antibodies to alzheimer neurofibrillary tangles. 1. identification of polypeptides. | ten monoclonal antibodies to alzheimer neurofibrillary tangles (ants) were produced by immunizing mice with a brain homogenate from senile dementia of the alzheimer type (sdat). in methanol-fixed isolated neuronal perikarya, six of these antibodies reacted with nearly every ant, three recognized 70-88% of ants, and one bound to less than 30% of ant. in paraffin sections, three of the antibodies did not bind to tangles that had been fixed in formalin, three stained weekly, and four reacted with t ... | 1985 | 2411142 |
| ecological toxicology and human health effects of heptachlor. | the chlorinated cyclodiene heptachlor was registered in 1952 as an agricultural and domestic insecticide. by early 1984, registration for all purposes, except subterranean termite control and for limited use in the control of fire ants, had been cancelled. this restriction of use arose primarily from concerns over the environmental persistance and bioaccumulation potential of the organochlorine pesticides. currently, sale of heptachlor has been voluntarily suspended over questions about its carc ... | 1990 | 2403688 |
| ants: potential mechanical vectors of hospital infections in trinidad. | 1990 | 2389326 | |
| underrecognition of morbidity from stings of the red imported fire ant in the southeastern united states. | this cross-sectional study was conducted to determine the health-seeking behaviors of a group of patients stung by red imported fire ants (rifa) and the number of nursing referrals resulting in treatment. the following two research questions were asked: (1) is there a delay in seeking the care of a board-certified allergist for symptoms of fire ant hypersensitivity? (2) are nurses referring patients for treatment? the entire population of board-certified allergists in alabama, georgia, and south ... | 1990 | 2367290 |
| allergens in hymenoptera venom. xxii. comparison of venoms from two species of imported fire ants, solenopsis invicta and richteri. | venoms were collected by electrical stimulation from the two major species of imported fire ants found in the united states, solenopsis invicta (sol i) and s. richteri (sol r). antigens similar to three of the four known sol i venom proteins (i, ii, iii, and iv) were isolated from sol r. the n-terminal amino acid sequences for the antigens iii were identical; but those for the antigens ii demonstrated only nine of 20 residues to be identical. two monoclonal antibodies raised against sol i ii did ... | 1990 | 2355158 |
| behavioral plasticity of myrmica rubra ants during learning in a multi-alternative symmetrical labyrinth. | the problem of behavioral plasticity in insects was studied with red ants, myrmica rubra, by altering a habit developed in a multi-alternative labyrinth with care for offspring as motivation. in altering the habit, location of reinforcement was changed: in the first series, the brood was transferred from the target areas to relatively symmetrical areas of the transverse axis of the labyrinth; in the second, reinforcement was left on one area that had not been preferred during learning of the tar ... | 1990 | 2352615 |
| ph-sensitive liposomes composed of phosphatidylethanolamine and fatty acid. | ph-induced destabilization, aggregation and fusion of liposomes composed of phosphatidylethanolamine (pe) and various fatty acid were studied. destabilization was examined as a fluorescent change caused by leakage of coencapsulated aminonaphthalene-3,6,8-trisulfonic acid (ants) and n,n-p-xylylenebispyridinium bromide (dpx). fusion was monitored by two different methods, that is, intermixing assay of internal aqueous contents of liposomes, and lipid dilution assay of liposomes labeled with fluore ... | 1990 | 2347018 |
| fly pupae as attractant carriers for toxic baits for red imported fire ants (hymenoptera: formicidae). | eight laboratory-reared ant species were fed baits of house fly, musca domestica l., pupae treated with hydramethylnon. two fire ant species, solenopsis invicta buren and solenopsis geminata (f.), and pheidole morrissi (forel) were killed; average percentage of mortality of the five other species was less than 20%. in contrast, all species that were fed the commercial fire ant bait containing hydramethylnon (amdro) died or were adversely affected. in the field, applications of house fly pupae an ... | 1990 | 2324379 |
| comparative ultrastructure of ant spermatozoa (formicidae: hymenoptera). | mature spermatozoa from spermathecae of founding queens were obtained from 5 species of ants, representing the major subfamilies myrmicinae (acromyrmex versicolor, crematogaster sp.) and dolichoderinae (tapinoma sessile, conomyrma insana, conomyrma wheeleri). the ultrastructure of ant spermatozoa has many features in common with that of higher insects and is similar to that of other hymenoptera. structural similarities to spermatozoa of other hymenoptera include an acrosome containing an interna ... | 1990 | 2280410 |
| allergy to stinging and biting insects in queensland. | over an eight and a half year period 742 patients were assessed for allergy to stinging and biting insects in queensland; 452 (61%) had allergic reactions to honey bees, 244 (33%) to wasps, 30 (4%) to various ants, 11 (1.5%) to march flies (tabanus sp.) and five to tick infestation. one hundred and fifty one patients (20%) presented with large local swelling only (rxn1), 98 (13%) with urticaria and/or facial angioedema distant from the sting site (rxn2) and 492 (66%) with subjective or objective ... | 1990 | 2246984 |
| the use of polyacrylamide-gel electrophoresis for the high-resolution separation of reducing saccharides labelled with the fluorophore 8-aminonaphthalene-1,3,6-trisulphonic acid. detection of picomolar quantities by an imaging system based on a cooled charge-coupled device. | various monosaccharides, oligosaccharides and small polysaccharides were labelled covalently at their reducing end groups with the fluorophore 8-aminonaphthalene-1,3,6-trisulphonic acid (ants), and the resulting fluorescent derivatives were separated by high-resolution page. the electrophoretic mobilities of the labelled saccharides are related largely to the compounds' mr values, but they are also influenced by the individual chemical structures of the saccharides. various positional isomers an ... | 1990 | 2241903 |
| nephrotic syndrome associated with ant bite. | a 3-year-old child experienced edema of the face and extremities approximately 2 weeks after being stung on the legs, scrotum, and penis by "fire ants" (solenopsis invicta). after diagnosis of idiopathic minimal-change nephrotic syndrome and treatment with steroids, the edema rapidly disappeared. follow-up 3 years after his hospitalization showed no recurrence of nephrotic syndrome. we have correlated this case with previously published reports of the causal relationship of allergy to nephrotic ... | 1990 | 2185577 |
| changes in food selection by workers of the pharaoh's ant, monomorium pharaonis. | the results from simple choice test experiments with laboratory and field colonies of pharaoh's ants have revealed two behavioural traits that influence the way in which foraging worker ants respond to foods. initially, worker ants from laboratory colonies showed a distinct preference for certain foods (e.g. honey and peanut butter). however, when given only these 'preferred' foods continuously for several weeks, workers showed a marked preference for other foods when offered a choice. this 'sat ... | 1990 | 2132984 |
| [control of the pharaoh's ant with borax bait formulations]. | results are given for the experimental control of pharaoh ants, monomorium pharaonis l., with persistent borax baits in the laboratory and the field. dybh-bait formulations with about 17 per cent borax are very attractive and have a good effectivity. in 5 different objects infested with this ant eradication was proved to be possible with this experimental formulations. the progress of eradication depends essentially on the good organisational preparation of control measures. | 1990 | 2095049 |
| identification of jack-jumper ant (myrmecia pilosula) venom allergens. | jack-jumper ant venom proteins were electrophoretically separated on sds-polyacrylamide gels, transferred to nitrocellulose and probed with sera from subjects who had experienced an allergic reaction after being bitten by a jack-jumper ant. ant venom components that bound ige antibodies were detected by addition of 125i-anti-human ige followed by autoradiography. of the 17 polypeptides resolved by electrophoresis only three, of molecular weights approximately 14 kd, 12 kd and 10 kd, bound ige an ... | 1991 | 2043985 |
| [experience of the toxicology information center in prague with pesticides]. | the toxicological information centre replied in 1988 and 1989 some 5500 inquiries. this number comprised 5-7% concerning treatment of acute intoxications with pesticides. more than half of them concerned children who ingested pesticides. in adults in half of inquiries possible intoxication after ingestion was involved, in half intoxication was a result of inhalation or percutaneous intoxication. 10.5% and 12.5% of the inquiries concerning pesticide intoxications in adults were attempted suicide. ... | 1991 | 2032264 |
| poly(ethylene glycol)-induced lipid mixing but not fusion between synthetic phosphatidylcholine large unilamellar vesicles. | we have examined the effect of poly(ethylene glycol) (peg) on stable large unilamellar vesicles formed by a rapid extrusion technique and composed of pure synthetic phosphatidylcholines. the lipid systems studied were the saturated 1,2-dipalmitoyl-sn-glycero-3-phosphocholine (dppc) and the monounsaturated 1,2-dioleoyl-sn-glycerol-3-phosphocholine (dopc). peg at all concentrations (3.8-40 wt %) induced lipid mixing between large vesicles composed of these phosphatidylcholines. extensive leakage o ... | 1991 | 2021611 |
| . . . of alligators, ants and fireflies. | 1991 | 1990343 | |
| carrion insects of the egyptian western desert. | a general survey was made on the zoosaprophagous insects and their associates in a natural ecosystem in the egyptian western desert (80 km west of alexandria, 12 km from the mediterranean sea shore). two types of traps were used, one for flying insects and the other for soil-burrowing insects. two types of decaying media were used as baits: the common freshwater fish (tilapia zilii gerv.) and the desert snail (eremina desertorum). more than 30 insect species were trapped. the following orders an ... | 1991 | 1941945 |
| premaxillary-maxillary suture fusion and anterior nasal tubercle morphology in the chimpanzee. | the anterior nasal spine (ans) is considered by some to be a unique characteristic of modern humans; however, it has been reported to occur in chimpanzees. among human populations, ans size correlates with facial prognathism and timing of premaxillary-maxillary sutural fusion, which may have implications for models of midfacial growth. to investigate these questions, skulls from 55 chimpanzees (pan troglodytes) (29 male, 26 female), ranging in age from infants to adults, were examined. none of t ... | 1991 | 1928317 |
| fire ants: the death march. | 1991 | 1919459 | |
| distribution and density of polygyne fire ants (hymenoptera: formicidae) in texas. | multiple-queen or "polygyne" solenopsis invicta buren colonies are a serious economic and environmental concern because they occur in much higher densities than the monogyne form. polygyne colonies have been found at numerous locations in the united states; nevertheless, the frequency and distribution of this form are poorly known. almost 700 roadside sites in 168 texas counties were surveyed. polygyny was discovered at 54% of the infested sites. polygyne populations were scattered in a mosaic a ... | 1991 | 1885844 |
| red imported fire ant (hymenoptera: formicidae) control with a corn grit bait of fenoxycarb without soybean oil. | the standard fenoxycarb fire ant bait formulation (logic), composed of pregel defatted corn grits and soybean oil toxicant, was modified by eliminating the soybean oil. this formulation without soybean oil contained greater than 2 times more fenoxycarb and was as effective as the standard bait formulation against laboratory colonies of red imported fire ant, solenopsis invicta buren. in field tests, the modified and standard baits were equally effective in controlling fire ants after 6, 12, and ... | 1991 | 1885843 |
| inhibition of sendai virus fusion with phospholipid vesicles and human erythrocyte membranes by hydrophobic peptides. | hydrophobic di- and tripeptides which are capable of inhibiting enveloped virus infection of cells are also capable of inhibiting at least three different types of membrane fusion events. large unilamellar vesicles (luv) of n-methyl dioleoylphosphatidylethanolamine (n-methyl dope), containing encapsulated 1-aminonaphthalene-3,6,8-trisulfonic acid (ants) and/or p-xylene bis(pyridinium bromide) (dpx), were formed by extrusion. vesicle fusion (contents mixing) and leakage were then monitored with t ... | 1991 | 1850923 |
| some simple techniques helpful in ant research. | eight simple techniques which may be helpful in ant research are presented. they facilitate: (1) collecting ground-nesting ants; (2) prompting ants to go out of their nest chambers; (3) introducing ants into a test tube; (4) recapturing ants during their mass escape in the laboratory; (5) keeping tidy foraging areas of artificial ant nests; (6) keeping high level of air humidity in foraging areas of artificial ant nests; (7) providing ants with water of improved quality; (8) cleaning artificial ... | 1991 | 1821521 |
| factors influencing the metacercarial intensity in ants and the size of dicrocoelium dendriticum metacercarial cysts. | during the 1990 grazing season, ants found attached to plants were collected from sheep pastures at monthly intervals and examined for dicrocoelium metacercariae. the species formica pratensis and f. rufibarbis showed average metacercarial intensities of 76 and 38 respectively. in addition to the ant species, the intensity of infection was found to be dependent on the length of the ant. the volume of metacercarial cysts was influenced by the intensity per ant relative to ant length but not by th ... | 1991 | 1795087 |
| mutability of constitutive heterochromatin (c-bands) during eukaryotic chromosomal evolution and their cytological meaning. | a quantitative analysis of the alterations of constitutive heterochromatin in eukaryotic chromosomal evolution was attempted using the accumulated c-banding data available for mammals, amphibians, fish, ants, grasshoppers, and plants. it was found that these eukaryotes could be classified into two types by their c-banding patterns: 1) type i included mammals, fish, and ants, and 2) type ii included amphibians, grasshoppers, and plants. c-bands were rather scarce in type i eukaryote chromosomes a ... | 1991 | 1777253 |
| predation of free-living engorged female rhipicephalus appendiculatus. | in experiments done over a period of 1 1/2 years using engorged female rhipicephalus appendiculatus tethered in a grass plot, 42% predation was observed in long grass (40-60 cm), and 36% in short grass (6-10 cm). deaths due to environmental factors were 4.8% and 6.8% in long and short grass, respectively. six groups of animals were confirmed to be predators of the ticks, namely: ants, spiders, rodents, birds, lizards and shrews. the implications of these results in making tick population models, ... | 1991 | 1773676 |
| near death of a woman stung by red imported fire ants: management of anaphylaxis. | patients with allergic reactions to rifa should be instructed in avoidance of rifa and in the administration of epinephrine, given emergency identification information, and referred to an allergist for definitive diagnosis and for desensitization as indicated. rifa are a growing menace in this country; as their habitat steadily extends north and west, no doubt a growing number of people will be affected by them. their sting can be acutely life threatening and, as in this one case example, a seve ... | 1991 | 1656126 |
| internal reproductive system in adult males of the genus camponotus (hymenoptera: formicidae: formicinae). | descriptions are provided of the histology and ultrastructure of the male internal reproductive tracts from three species of camponotus, representing three subgenera. this study is the first to provide ultrastructural information on the testes (including spermatogenesis and spermiogenesis), seminal vesicles, and accessory glands in ants. testes contain about ten follicles each, and each follicle is capable of producing hundreds of cysts in which spermatozoa develop. structural evidence of meiosi ... | 1992 | 1635070 |
| prevention and primary care treatment of stings from imported fire ants. | stings from imported fire ants constitute a problem encountered more and more frequently in practice settings across the southern united states. envenomation (impregnation of venom) in children is especially common. current medical regimens for the treatment of other stinging insects are of little value in preventing local cutaneous reactions to fire-ant stings. the pathogenesis of reactions from imported-fire-ant stings is discussed, and suggestions for prevention, treatment and patient educati ... | 1992 | 1608571 |
| destabilization of whole skin lipid bio-liposomes induced by skin penetration enhancers and ft-ir/atr (fourier transform infrared/attenuated total reflection) analysis of stratum corneum lipids. | whole skin lipid bio-liposomes (skin bio-liposomes), in size ranging from 2 to 8 microns, were prepared by a reverse phase evaporation technique using rat full thickness skin. leakage of an encapsulated fluorescence probe, ants (delta-amino-1,3,6-naphthalene-trisulfonate), was measured by adding transdermal penetration enhancers (penetrants) into the medium where the skin bio-liposomes were present. oleylamine induced a fast release of ants from the liposomes compared to lauryl-amine which showe ... | 1992 | 1606648 |
| susceptibility and behavioral response of red imported fire ant (hymenoptera: formicidae) to selected entomogenous nematodes (rhabditida: steinernematidae & heterorhabditidae). | pathogenicity of infective juveniles of selected steinernema spp. and heterorhabditis spp. toward developing and reproductive stages of the red imported fire ant, solenopsis invicta buren, was tested under laboratory conditions. at 10(3)-10(5) infective juveniles per petri dish, mortality of reproductive larvae, pupae, and alates ranged from 28 to 100% at higher doses after 96 h at 23-25 degrees c. steinernema carpocapsae all was the most consistent species tested; this nematode caused mortality ... | 1992 | 1593012 |
| fire ant allergy. | two species of imported fire ants (ifa) now infest large areas of the southern united states. the most aggressive species, solenopsis invicta, has adapted well to environmental conditions in the south where it has become a considerable agricultural pest and a significant public health problem. sting reactions range from local pustules and large, late-phase responses to life-threatening anaphylaxis. four important sol i venom allergens have been isolated and characterized. clinical studies under ... | 1992 | 1577260 |
| imported fire ant stings: clinical manifestations and treatment. | stings by imported fire ants result in local reactions to the insect's venom; less frequently, they induce systemic allergic reactions. a 19-month-old child developed a characteristic localized cutaneous reaction at the sites of numerous stings after disturbing an ant mound. he experienced no secondary complications, and his pustular lesions resolved with conservative treatment. | 1992 | 1574475 |
| immunohistochemical, ultrastructural and immunoelectron microscopic studies of spinal cord neurofibrillary tangles in progressive supranuclear palsy. | immunohistochemical, ultrastructural and immunoelectron microscopic studies of spinal cord neurofibrillary tangles (nfts) in progressive supranuclear palsy (psp) were performed. the spinal cord nfts reacted with antibodies to tau protein (tau-2), ubiquitin and alzheimer neurofibrillary tangles (ants, ab 39). ultrastructurally, the nfts consisted of bundles of straight fibrils. in longitudinal sections, the individual nft fibrils appeared as straight fibrils with a diameter of approximately 15 nm ... | 1992 | 1488085 |
| retinal and retinol promote membrane fusion. | disk membranes from the bovine retinal rod outer segments (ros) were found to fuse with vesicles made of lipids extracted from unbleached ros disk membranes, using a lipid mixing assay for membrane fusion (relief of self-quenching of r18, octadecylrhodamine b chloride). if the retinal chromophore of rhodopsin was reductively linked to opsin before lipid extraction, the vesicles made of the extracted lipids were not suitable targets for fusion of the disk membranes. the addition of retinal and re ... | 1992 | 1420260 |
| electrophoretic resolution and fluorescence detection of n-linked glycoprotein oligosaccharides after reductive amination with 8-aminonaphthalene-1,3,6-trisulphonic acid. | the relative mobilities of various n-linked oligosaccharides reductively aminated to the charged fluorophore 8-amino-naphthalene-1,3,6-trisulphonic acid (ants) were determined by electrophoresis on high-density polyacrylamide slab gels. each ants-derivatized oligosaccharide was assigned a relative migration index (rmi) expressed in terms of glucose equivalents, which was conveniently estimated by reference to a homologous series of ants--maltooligosaccharides run on each gel as oligosaccharide s ... | 1992 | 1372525 |
| [the capacity of ants for multiple alterations in the maze habit]. | ability was shown of ants myrmica rubra to multiple reconstructions of the habit elaborated in symmetrical multialternative maze under motivation of care for the progeny (transportation of breed of the own species). reconstruction consisted in the change of reinforcement location on the left or right aim spot. the ants showed the ability to carry out the series of eight reconstructions during one-two days. an improvement took place of the fulfillment of the last reconstructions in comparison wit ... | 1991 | 1369565 |
| comparative study of the enzymatic, hemorrhagic, procoagulant and anticoagulant activities of some animal venoms. | 1. the enzymatic, hemorrhagic, procoagulant and anticoagulant activities of venoms of some animals including snakes, lizards, toads, scorpions, spider, wasps, bees and ants were compared. 2. snake venom was the richest source of enzymes among the animal venoms. most other animal venoms were devoid of phosphodiesterase, l-amino acid oxidase, alkaline phosphomonoesterase and acetylcholinesterase activities and only a few exhibited arginine ester hydrolase activity. these venoms, however, exhibited ... | 1992 | 1360387 |
| epidemiological role of arthropods detectable in health facilities. | a total of 161 arthropod specimens were collected from 55 sites in a health care facility during july and september 1990. of the 116 bacterial isolates obtained from their body surfaces 6% were from parasites (mosquitoes), 59% from eusynanthropic arthropods (tenebrionid beetles, flies, german cockroaches, wasps), 16% from hemisynanthropic arthropods (ants, spiders) and 19% from occasionally encountered insects (non-biting midges, moths, beetles). most (88%) of the isolated bacteria were gram-neg ... | 1992 | 1350604 |
| [sutureless intestinal anastomosis with a biofragmentable anastomotic ring]. | there have been efforts to develop an ideal method of intestinal anastomosis throughout medical history. in ancient china, egypt and india living ants were used to approximate the transected edges of bowel. many other devices and techniques have since been introduced, using organic or synthetic, nonabsorable or absorbable materials. lately mechanical stapling devices have become exceedingly popular. the recently introduced biofragmentable anastomotic ring (bar) is composed of an absorbable polyg ... | 1992 | 1335433 |
| ant-aphid association: role of aphid alarm pheromone. | when attacked by predators, aphids secrete alarm pheromones that cause nearby aphids to disperse. ant-associated (myrmecophilous) aphid species disperse less readily than nonmyrmecophilous species. the ant formica subsericea responds to aphid alarm pheromone in a way that is beneficial to the aphid. these findings support our hypothesis that myrmecophilous aphids depend more on ants for protection from predators than on their own dispersive powers. | 1976 | 1273595 |
| [the effect of chlordecone (kepone) on the laboratory colonies of the pharaoh's ant monomorium pharanois]. | the control of the pharaoh's ant monomorium pharaonis is very difficult because of the social way of life in this insect pest. in regard to the reported good suppressing results of chlordecone we analyzed the mode of action in this compound at laboratory colonies of the pharaoh's ant. commercial gel and granular formulations as well as selfmade baits have been tested. the best results showed the granular bait on the basis of ground nut butter, while the effects of all of the others was much weak ... | 1976 | 1267219 |
| on the role of serotonin in aggressive behaviour of ants genus formica. | the object of our study was the investigation of the effects of aggressiveness on brain 5-ht concentration in ants genus formica. the brain concentrations of 5-ht in ants is relatively high. the results indicate that both isolation, interspecies aggressiveness and intraspecies aggressiveness were accompanied by the increased brain serotonin. | 1975 | 1239749 |
| aggressive behavior and brain serotonin and catecholamines in ants (formica rufa). | serotonin, adrenaline and noradrenaline were analyzed in brains of the ants, formica rufa. experiments demonstrated that concentrations of both serotonin and adrenaline were higher in ants that displayed aggressiveness (interspecific and intrageneric) while concentrations of noradrenaline was decreased. | 1975 | 1237899 |
| [annual activity cycle of ants parasited with dicrocoelium lanceolatum (rudolphi, 1819) metacercaria (author's transl)]. | the object of this study is to predict the period of appearance and the amount of risk of fluke parasitism in limousin sheep flocks. a perfect knowledge of the ethology of ants parasited with metacercaria (definitive source of host infestation) is necessary. the particular behavior of these vector insects has been only little studied. | 1975 | 1232905 |
| [attempt at the extermination of pharaoh ants using mutox]. | 1975 | 1229181 | |
| [new data on dicrocoelium hospes looss, 1907: anatomy of the adult and life cycle. preliminary paper (author's transl)]. | the morphological and anatomical studies of dicrocoelium hospes looss, 1907, from togo set off several differences with dicrocoelium lanceolatum rudolphi, 1819: shape and dimensions of the body, shape and disposition of the testes, shape, dimensions and location of the vitellaria, structure of the uterus coils. the first intermediate host is found, they are three species of limicolaria, one of them being l. aurora. the cercaria is described, its chaetotaxy confirms the validity of species d. hos ... | 1975 | 1227378 |
| [the arsenic baiting technic using rodex ant-killing varnish d1 in the control of pharaoh ants (monomorium pharaonis l.)--brief report]. | 1975 | 1226911 | |
| mass recruitment by army ants. | a single army ant (ecitoninae) can attract and direct scores of workers to prey by means of a chemical trial and momentary contact between the recruiter and workers on a raid column. recruited workers, in turn, attract more ants, resulting in a continuous stream of recruits. while the recruitment mechanism is basically similar, the speed and the number of ants recruited are greater form army ants than for other ants. | 1975 | 1215991 |
| [pathogenicity of entomophthora coronata cost. kervork. for the guadeloupe parasol-ant: acromyrmex octospinosus (formicidae, attini)]. | 1975 | 1211770 | |
| enemy specification in the alarm-recruitment system of an ant. | many kinds of ants use odor trails to recruit nestmates to food discoveries and new sites; minor workers of the myrmicine pheidole dentata also use them to recruit major workers ("soldiers") to the vicinity of intruders. this newly discovered alarm-recruitment system has proved to be narrowly specific. only fire ants and other members of the genus solenopsis, which include some of the potentially most dangerous enemies of pheidole, have been found to evoke the response when present as single sco ... | 1975 | 1198097 |