Publications
| Title | Abstract | Year Filter | PMID(sorted ascending) Filter |
|---|
| modification of synaptic efficiency, experiments in blatta orientalis. | the efficiency of synapt ic transmission in a nervous pathway--metathoracic ganglia from the cockroach--can be increased by various experimental situations, i.e., removal, immobilization or denervation of the forelegs of insects in ventral position. leg immobilization with the insect in supine position by itself determines a minor increase which is not enhanced by removal or denervation of the forelegs. under these conditions, the insects are able to hold their antennae with a midleg immediately ... | 1975 | 176871 |
| increase of synaptic efficacy as a correlate to learning in blatta orientalis. | 1978 | 216041 | |
| a molting rhythm for serum proteins of the cockroach, blatta orientalis. | 1. polyacrylamide gel electrophoresis (page) in 4% gels of blatta orientalis larval hemolymph revealed 4 major proteins. 2. maximum incorporation of [14c]-leucine into total hemolymph protein occurs within 24 hr and is followed by negligible turnover in the next 24 hr. 3. quantitative page was used to monitor concentration changes during the molting cycle in synchronously molting cultures. 4. all 4 proteins show the same temporal rhythm of variation but different amplitudes. 5. the widely differ ... | 1978 | 318348 |
| ultrastructural and cytochemical observation of calcium ion localization in the black-beetle pleural muscles. | the authors examined the infrastructure and distribution of calcium ions in the plexural muscles of a black-beetle (blatta orientalis l.) after being fixed in a solution of osmiumtetroxide buffered with a cacodylate buffer (ph = 7.4) and according to the method of carasso-favard (1966). the infrastructure of these muscles differs from the muscles of other insects, first of all, in the amount and distribution of the sarcoplasmic net (sr) and mitochondria and also in the amount and topography of t ... | 1977 | 608588 |
| recruitment of cerebral neurosecretory cells from globuli cells in the brain of cockroach, blatta orientalis (l.). | 1978 | 711041 | |
| fine structure of the rectum in cockroaches (dictyoptera): general organization and intercellular junctions. | the organization of the rectal pads is described in cockroaches belonging to the groups blattoidea (periplaneta americana, blatta orientalis) and blaberoidea (supella supellectillu, blaberus craniifer). in the blattoidea, each pad is composed of two layers (principal and basal cells) and is surrounded by very narrow junctional cells supporting the sclerotized cuticle of the pad frame; basally, the junctional cells abut on to the basal cells. in the blaberoidea, the basal cell layer is discontinu ... | 1976 | 941139 |
| [kluyveromyces blattae sp. n., a new multispored yeast for blatta orientalis (author's transl)]. | a new hitherto undescribed species of yeast of the genus kluyveromyces has been isolated for the intestinal tract of the oriental cockroach (blatta orientalis). a description of the new species including latin diagnosis is given. | 1976 | 962467 |
| larval-specific protein in the order dictyoptera. ii. antagonistic effects of ecdysone and regeneration on lsp concentration in the hemolymph of the oriental cockroach, blatta orientalis. | 1975 | 1139884 | |
| effects of hydroprene on development and reproduction in the oriental cockroach, blatta orientalis. | nymphs of the oriental cockroach blatta orientalis were exposed during the penultimate and final instars to vinyl tiles treated with the juvenile hormone analogue hydroprene. adults moulting from these nymphs exhibited deformities such as twisted wings in both sexes and modified genitalia in females. females with deformities were unable to produce viable oothecae. b.orientalis confined on tiles treated with hydroprene at rates of 25-100 mg/m2 did not reproduce. the treatment rate of 10 mg/m2 red ... | 1992 | 1421504 |
| [effect of the corpora allata on the development of the male accessory sex glands in blatta orientalis]. | the volumetric changes of the corpora allata (ca) during the first 15 days of imaginal life of blatta orientalis l. (dictyoptera, blattidae) are studied in connection with the growth of the accessory reproductive glands (gsam). both, the ca and the gsam, grow in parallel during the first 3-4 days of imaginal life, which suggests a possible functional link between both organs. if the ca are explained on freshly ecdysed adults, then gsam protein accumulation is reduced (by 35%) when checked on day ... | 1992 | 1439083 |
| susceptibility of cockroaches (dictyoptera: blattellidae, blattidae) to infection by steinernema carpocapsae. | the susceptibility of american cockroaches, periplaneta americana (l.); smoky brown cockroaches, p. fuliginosa (serville); oriental cockroaches, blatta orientalis l.; german cockroaches, blattella germanica (l.); and brownbanded cockroaches, supella longipalpa (f.), to steinernema carpocapsae weiser (all strain) was evaluated under laboratory conditions. a 1-ml water suspension containing 500,000 nematodes was placed on filter paper in a petri dish or the pad of a bait station. german, brown-ban ... | 1992 | 1517508 |
| isolation of high-molecular-weight dna from insects. | a simple and rapid method for the isolation of high-molecular-weight dna from insects is described. the method does not require cscl ultracentrifugation or extensive dialysis. high-molecular-weight dna was obtained within 24 h. since the entire insect was used for dna isolation, an initial nuclei-enriched fraction was required. genomic dna was extracted from lysed nuclei by organic phase separation (liquid/liquid extraction). this method has been successfully applied to the isolation and purific ... | 1990 | 1693047 |
| skin test reactivity to whole body and fecal extracts of american (periplaneta americana) and german (blatella germanica) cockroaches in atopic asthmatics. | forty-six atopic asthmatic subjects aged 3 to 58 years attending the allergy clinic of a university hospital were evaluated for prick skin test reactivity with commercially available extracts of cockroach (cce) and house dust (hd). additionally, skin testing was performed with american cockroach whole body (awbe) and fecal extracts (afe) as well as german cockroach whole body (gwbe) and fecal extracts (gfe) prepared in our laboratory. commercial cockroach extract was prepared from american, germ ... | 1991 | 1750718 |
| reproductive and developmental biology of the oriental cockroach blatta orientalis (dictyoptera). | at 27 degrees c and 45% r.h. in the laboratory, the oriental cockroach blatta orientalis (l.) developed to adulthood in seven to nine instars for males (66% had eight instars) and eight to ten instars for females (67% had nine instars) in mixed groups, with up to twelve instars for isolated females. nymphal development lasted 185 +/- 2 days for males, 216 +/- 4 days for females, with 89% survival to adulthood. adult longevity was significantly more for males than females in mixed groups. virgin ... | 1991 | 1773116 |
| distribution of oriental and german cockroaches, blatta orientalis and blattella germanica (dictyoptera), in the united kingdom. | results are presented of a survey carried out by rentokil ltd on the distribution of the oriental cockroach blatta orientalis l. and the german cockroach blattella germanica l. in the united kingdom. the known ranges of both species are increased considerably by the findings of the survey, with several new vice-county records for scotland (including the western isles), england and wales. the frequency at which blatta orientalis was observed in outdoor habitats may indicate that this species some ... | 1991 | 1773117 |
| toxicity of abamectin to cockroaches (dictyoptera: blattellidae, blattidae). | abamectin was fed to german cockroaches, blattella germanica (l.), in non-choice tests. lt50s and lc50s were estimated by probit analysis. the lt50s for the german cockroach ranged from 4.4 to 1.7 d for males, from 9.0 to 2.4 d for females, and from 4.4 to 1.6 d for nymphs for bait concentrations of abamectin between 0.0025 and 0.0500%. the lc50s of abamectin were 0.0110 and 0.0040% from males, 0.0240 and 0.0090% for females, and 0.0200 and 0.0080% for nymphs at 3 and 6 d, respectively. the lt50 ... | 1991 | 1787219 |
| cockroach-allergen study: allergen patterns of three common cockroach species probed by allergic sera collected in two cities. | antigens/allergens of three common cockroach extracts, crude whole body extract of the american cockroach (cra-a), crude whole body extract of the german cockroach (cra-g), and crude whole body extract of the oriental cockroach (cra-o), were studied with crossed immunoelectrophoresis, crossed radioimmunoelectrophoresis, and western blot analysis. sera of cockroach-allergic patients with asthma, 10 from chicago, ill. (c group) and six patients from lexington, ky. (l group), were used; results wer ... | 1991 | 2045612 |
| morphogenetic effects of hydroprene on genitalia of the oriental cockroach (dictyoptera: blattidae). | hydroprene had a considerable effect on the morphogenesis of external genitalia of the oriental cockroach, blatta orientalis l. exposure of nymphs to hydroprene resulted in abnormal adultoids with structural and positional distortions, and reduced or absent cuticular sclerotizations of the external genitalia. late nymphal instars were significantly more sensitive to hydroprene than were early instars. in males, the epithelial cells of wings, serrata of the right phallomere, titillator and other ... | 1990 | 2212235 |
| shared allergenic activity in asian (blattella asahinai), german (blattella germanica), american (periplaneta americana), and oriental (blatta orientalis) cockroach species. | whole-body extracts of the feral and peridomestic asian cockroach (blattella asahinai) and the three domestic cockroach species, german (blattella germanica), american (periplaneta americana), and oriental (blatta orientalis), were compared allergenically using an ige serum pool from 4 german cockroach sensitive individuals. in crossover radioallergosorbent inhibition analysis, the asian cockroach shared allergenic activity primarily with the german cockroach polymer and to a lesser extent with ... | 1990 | 2242929 |
| primary structures of hypertrehalosaemic neuropeptides isolated from the corpora cardiaca of the cockroaches leucophaea maderae, gromphadorhina portentosa, blattella germanica and blatta orientalis and of the stick insect extatosoma tiaratum assigned by tandem fast atom bombardment mass spectrometry. | hypertrehalosaemic peptides were isolated by reversed-phase high-performance liquid chromatography from corpora cardiaca of four species of cockroaches (leucophaea maderae, gromphadorhina portentosa, blattella germanica, and blatta orientalis) and one stick insect species (extatosoma tiaratum), and their primary sequences were assigned by collision-induced decomposition tandem fast atom bombardment mass spectrometry (fabms/cid/ms). the members of the cockroach families blaberidae (l. maderae and ... | 1990 | 2340112 |
| catecholamines and related o-diphenols in cockroach hemolymph and cuticle during sclerotization and melanization: comparative studies on the order dictyoptera. | catecholamines and related o-diphenols extracted from the cuticle and hemolymph of adult cockroaches during sclerotization and pigmentation of the cuticle were analyzed by reverse phase hplc with electrochemical detection. at ecdysis, dopamine (da) o-conjugates predominated in the hemolymph of periplaneta americana, p. australasiae, p. fuliginosa, p. brunnea, and blatta orientalis (blattidae); blattella germanica (blattellidae); and gromphadorhina portentosa and blaberus craniifer (blaberidae). ... | 1990 | 2391402 |
| insecticide and structural modification strategies for management of oriental cockroach (orthoptera: blattidae) populations. | 1987 | 2437170 | |
| immobilizing and lethal effects of spider venoms on the cockroach and the common mealbeetle. | immobilizing and lethal effects of the venoms obtained from six spider species (brachypelma albopilosum, atrax robustus, cupiennius salei, selenops mexicanus, tegenaria atrica, argiope bruennichi) were tested on blatta orientalis (cockroach) and tenebrio molitor (common mealbeetle). the immobilizing effects were quantified by measuring insect locomotor activity in circle arenas observed over 72 hr after venom injection. both insect species showed cramps, quivering and jerking of the limbs as wel ... | 1989 | 2728023 |
| the hypertrehalosaemic peptides of cockroaches: a phylogenetic study. | hypertrehalosaemic peptides from the corpora cardiaca of 14 different species were compared with respect to phylogenetic relationships within the insect suborder blattaria (cockroaches). gland extracts from members of the family blattidae (periplaneta americana, p. brunnea, p. australasiae, p. fuliginosa, and blatta orientalis) contain two hypertrehalosaemic octapeptides with identical properties to the recently sequenced peptides m i and m ii from the american cockroach, whereas corpora cardiac ... | 1989 | 2806876 |
| excretion of viable tubercle bacilli by blatta orientalis (the oriental cockroach) following ingestion of heat-fixed sputum smears: a laboratory investigation. | adult blatta orientalis were allowed to feed on heat-fixed tuberculous sputum smears and the faeces collected for examination by microscopy and culture. mycobacterium tuberculosis was repeatedly isolated from homogenized faecal pellets using liquid and solid selective culture media. faeces remained positive both microscopically and on culture even after storing for 8 weeks at room temperature. it is recommended that smears, prepared from clinical material which may contain m. tuberculosis or m. ... | 1987 | 3127961 |
| the effect of biotic and abiotic implants on the recognition of blatta orientalis cuticular transplants by the cockroach periplaneta americana. | the immune system of the american cockroach, periplaneta americana, was activated to recognise as "non self" xenogeneic tissue normally treated as "self". activation was accomplished by injecting into the insect haemocoele material known to elicit an encapsulation response such as blaberus craniifer cuticular tissue and 6b-sepharose beads. in these insects, cuticular skingrafts from blatta orientalis, a closely related species of cockroach, were rejected by more than half of the recipients. ther ... | 1987 | 3297828 |
| isolation of campylobacter subsp. jejuni from oriental and american cockroaches caught in kitchens and poultry houses in vom, nigeria. | a total of 690 adult cockroaches (periplaneta americana (l.), the american cockroach, and blatta orientalis (l.), the oriental cockroach) were captured alive within domestic kitchens and near poultry houses in vom. using selective media, their external surfaces and internal (gut) contents, after adequate decontamination of the external surfaces, were culturally examined for the presence of campylobacters. 4 isolates of campylobacter subsp jejuni were made (0.5%); 3 from the gut contents and 1 fr ... | 1986 | 3557829 |
| [occurrence, distribution and control of cockroaches in the east german district of rostock]. | the german cockroach (blattella germanica) is the prevalent species in the district of rostock. there was also an occurrence of blatta orientalis and, in one case, of periplaneta australasiae. periplaneta americana is occasionally introduced from warmer regions of the globe via containers. extent and intensity of infestation of many buildings has increased making large-scale control measures necessary. most control measures have been taken in food industry enterprises. the quantity of cockroach ... | 1987 | 3605784 |
| two parasites of blatta orientalis l. oothecae: tetrastichus hagenowii (ratzeburg) (hymenoptera: eulophidae) and prosevania fuscipes (illiger) (hymenoptera: evaniidae). | 1986 | 3800633 | |
| distribution, seasonal abundance, and pest status of the oriental cockroach (orthoptera: blattidae) and an evaniid wasp (hymenoptera: evaniidae) in urban apartments. | 1986 | 3958314 | |
| [spectral sensitivity of the visual cells of the complex eye of blatta orientalis]. | intracellular recordings were made from single photoreceptors of the frontal part in the compound eye of the cockroach blatta orientalis. two spectral types of cells were revealed: uv-receptors with lambda max = 361 +/- 8 nm and green-receptors with lambda max = 503 +/- 12 nm. spectral curve of the whole eye measured by erg had two peaks (at lambda = 350-370 and 500 nm) and minimum in the range of 400-430 nm. the finding has been interpreted as an additional evidence for dichromatic vision of th ... | 1985 | 3974760 |
| [sensitivity of blatta orientalis l. and shelfordella tartara sauss at different stages of their development to chlorophos and the gamma isomer of hexachlorane]. | 1970 | 4102592 | |
| [sensitivity of blatella germanica (l.) and blatta orientalis l. to some insecticides in czechoslovakia]. | 1972 | 4125442 | |
| changes in electrical activity of the cockroach blatta orientalis l. brain induced by anti-lobster brain antibody. | 1969 | 4187865 | |
| [microsporidosis in natural populations of cockroaches, blattella germanica l. and blatta orientalis l]. | 1973 | 4205724 | |
| the effect of hyperactivity on synaptic transmission. experiments in blatta orientalis. | 1973 | 4358331 | |
| [effectiveness of chlorophos bait with ammonium carbonate in the control of roaches (blatta orientalis l. and blattella germanica l.)]. | 1974 | 4459687 | |
| aerobic bacteria occurring in the hind-gut of the cockroach, blatta orientalis. | methods are described for the isolation and identification of aerobic bacteria occurring naturally in the hind-gut of the cockroach blatta orientalis captured from a number of wild sources, to establish whether or not human pathogens occurred naturally within the gut. during the investigation an organism was frequently found which could not be classified in any described species, and for which we propose the name escherichia blattae. | 1973 | 4571611 |
| laboratory transmission of enterobacteriaceae by the oriental cockroach, blatta orientalis. | methods of maintaining and feeding and of infecting cockroaches with pathogenic organisms were investigated.cockroaches fed on known concentrations of escherichia coli o119, esch. coli o1, alkalescens dispar o group 2 and shigella dysenteriae 1 (shiga's bacillus) were maintained in petri dishes. the effect of various diets on the survival of these organisms within the hind-gut and faeces was observed. with a ;normal' diet of gruel esch. coli o119 was isolated for up to 20 days, esch. coli o1 for ... | 1973 | 4571613 |
| [experience in the control of synanthropic cockroaches, blatta orientalis and blattella germanica l. in some town districts]. | 1973 | 4782413 | |
| [infestation and possibility of a vibrio carrier state in oriental (blatta orientalis l.) and common (blatella germanica l.) cockroaches]. | 1973 | 4783463 | |
| [prosevania punctata brullé (hymenoptera, evaniidae)--natural enemy of the black cockroach (blatta orientalis)]. | 1973 | 4805393 | |
| preliminary investigations into the incubator-vector status of the cockroach blatta orientalis. | 1969 | 4898099 | |
| cs-137 metabolism in blatta orientalis at various temperatures. | 1968 | 5239686 | |
| [biology of black cockroaches (blatta orientalis l.) in insect cultures and methods of their dilution]. | 1969 | 5371113 | |
| cuticular lipids of insects. i. hydrocarbons of leucophaea maderae and blatta orientalis. | 1970 | 5418207 | |
| [on the resistance of blatta orientalis to extreme barometric depression]. | 1971 | 5577287 | |
| [on certain aspects of the biology of blatta orientalis l]. | 1965 | 5896833 | |
| axonal transport involvement in long-lasting synaptic modifications in blatta orientalis. | to determine whether axonal transport plays a role in the establishment of long-lasting changes in synaptic transmission, the effects of colchicine on transport and on synaptic modifications induced by hyperactivity were studied in the nerve cord of the cockroach blatta orientalis. application of a lead weight on the insect's dorsum, and the consequent exaggerated use of antigravity reflexes, facilitated synaptic transmission along a particular nervous pathway in the metathoracic ganglion. appli ... | 1983 | 6186765 |
| immunological recognition of cuticular transplants in insects. | transplantation of allogeneic and xenogeneic cuticle onto the american cockroach, periplaneta americana, was carried out in order to compare the specificity of immune recognition of these 'skin grafts' with that of implanted tissues. in order to facilitate interpretation of results, the technique of transplanting cuticle from nymphal donors onto nymphal recipients was adopted - if donor subcuticular epidermis is not recognised as 'foreign', it will grow, fuse with the recipient's epidermal sheet ... | 1983 | 6341106 |
| cockroach larval-specific protein, a tyrosine-rich serum protein. | larval-specific protein (lsp) is the most abundant protein in the hemolymph of cockroaches shortly before molting, but is rapidly cleared from the hemolymph during the molt (kunkel, j. g., and lawler, d. m. (1974) comp. biochem. physiol. 47b, 697-710). blatta orientalis lsp was purified by sedimentation in preparative sucrose gradients followed by 2-hydroxypropylamino-cellulose anion-exchange chromatography and gel filtration on a column of bio-gel a-1.5m. the amino acid composition of lsp inclu ... | 1983 | 6643496 |
| [a model of cockroach control in a large area. ii. occurrence and distribution of blattella germanica and blatta orientalis in the district of potsdam (gdr)--an infestation analysis]. | blattella germanica and blatta orientalis occur in the district of potsdam (german democratic republic). b. germanica is the real cause of plague. up to now 2,734 building properties have been infested with cockroaches. b. germanica was found in 2,644 properties; b. orientalis was found in 20 properties and both were found in 70 properties. infestation with cockroaches increases with urbanisation. infestation is especially frequent in works canteens and similar rooms. outdoor distribution of coc ... | 1983 | 6859621 |
| allergy to cockroach antigens in asthmatic patients. | cockroach allergy was investigated in a group of 56 patients with atopic bronchial asthma (37 men and 19 women with ages ranging from 16 to 65) all allergic to house dust antigen. in all patients, both intracutaneous tests and bronchial provocation tests were performed with cockroach antigen prepared from the species most common in poland, blattella germanica and blatta orientalis. positive skin reactions to cockroach antigen were found in 17 patients while an immediate bronchoconstrictive respo ... | 1981 | 7349028 |
| effects of fenoxycarb on development and reproduction of the oriental cockroach, blatta orientalis. | in a laboratory study, groups of third-instar blatta orientalis nymphs were reared to adulthood in arenas containing fenoxycarb (48 mg a.i./m2) treated ceramic or plywood tiles. the reproductive capacity of the emergent adults was assessed by pairing each individual with two untreated individuals of the opposite sex. oothecal production, oothecal hatch and the numbers of nymphs emergent from each hatched ootheca were monitored. exposure to 1-day-old deposits of fenoxycarb reduced adult emergence ... | 1995 | 7548939 |
| biologic potency and immunoblotting studies of extracts of three cockroach species. | although cockroaches are responsible for severe allergic disease, cockroach extracts are not yet standardized by the id50eal method, nor have the allergens been completely characterized. | 1995 | 7583846 |
| altered behavior in two species of blattid cockroaches infected with moniliformis moniliformis (acanthocephala). | moniliformis moniliformis-infected periplaneta australasiae and blatta orientalis were less active than uninfected controls in behavioral arena tests under both red and white light regimes. there was a strong interaction between light regime and parasitism for substrate use by p. australasiae. under red light, parasitism decreased the use of black horizontal surfaces, whereas under white light, parasitism increased the use of black horizontal surfaces. in contrast, b. orientalis substrate use wa ... | 1994 | 8158464 |
| transplantation immunity in the american cockroach, periplaneta americana: the rejection of integumentary grafts from blatta orientalis. | the results from several previous studies have indicated that the american cockroach is able to respond to integumentary xenografts, but doubt remained as to whether cockroaches could effectively discriminate between self and allogeneic differences. this was emphasized by the fact that while one study reported that periplaneta americana responded to grafts donated by the closely related genus blatta orientalis, the data reported elsewhere, using a different assay system, found no such reactivity ... | 1993 | 8375565 |
| quality of housing and allergy to cockroaches in the dominican republic. | fifty-one atopic asthmatic and/or allergic rhinitic children and 23 nonatopic control from santo domingo, the dominican republic, were skin tested with an extract mix of three cockroach species (blattella germanica, blatta orientalis, and periplaneta americana). sixteen percent of the atopics and none of the nonatopics demonstrated positive immediate skin reactions to the cockroach mix (chi 2 = 4.05, p = 0.04). hypersensitivity was correlated with the quality of the homes; 22% (8/36) of the atop ... | 1996 | 8527953 |
| [cockroach allergy: a study of its prevalence using skin tests with commercial extracts]. | cockroaches have been increasingly recognized as an important source of indoor allergens. in this study we assessed the prevalence of cockroach sensitization among an outpatient population observed at our department (155 patients with a mean age of 29 +/- 12 years), based on skin "prick" tests with four commercial cockroach extracts along with a common battery of standardized inhalant allergens. we found a positive wheal to at least one of these four extracts in 27 patients: 26 (96.2%) to blatta ... | 1995 | 8579009 |
| host specificity of gregarina blattarum von siebold, 1839 (apicomplexa: eugregarinida) among five species of domiciliary cockroaches | the host specificity of gregarina blattarum was evaluated among five species of domiciliary cockroaches: blatella germanica, supella longipalpa, blatta orientalis, periplaneta americana, and periplaneta fuliginosa. third- and fourth-instar nymphs were allowed to feed on crushed dog kibble contaminated with g. blattarum oocysts. cockroaches were killed 8 days postinfection and examined for parasites. gregarina blattarum infections were observed in all experimentally infected replications of b. ge ... | 1996 | 8812602 |
| occupational allergic disease in cereal workers by stored grain pests. | it is well known that workers occupationally exposed to grain dust have a high prevalence of respiratory symptoms, but their pathogenesis remains obscure when sensitization to cereal flour cannot be demonstrated. storage mites, tenebroids, and cockroaches are stored-grain pests found in grain and cereal products frequently in our area, where the cereal industry is the most important industry. an epidemiological analysis of sensitization of these stored-grain pests was performed on 4379 patients ... | 1997 | 9350153 |
| [preliminary evaluation of the incidence and control of insects--pest control in polish hospitals]. | the evaluation of the infestation and methods of insect disease vectors control in 748 hospitals in poland in the period of 1990 to 1995 were done. the insect species, places of their occurrence and control agents were analysed. blattella germanica l. occurred most frequently (71% hospitals). blatta orientalis and monomorium pharaonis were found in 40% and 17% hospitals respectively. kitchens, laundries and baths were most infested. sometimes insects were found also in central sterilization unit ... | 1997 | 9432707 |
| effect of arena size on behaviour and mortality of the oriental cockroach blatta orientalis in arenas with a cypermethrin deposit adjacent to harbourage access points. | activity and survival of adult female blatta orientalis was investigated using tagged cockroaches in periodically illuminated arenas (ld 12:12 h) with a harbourage at one end. the arenas were rectangular with a width of 50 cm and lengths up to 480 cm. a cypermethrin-treated plywood plate (50 x 11 cm) substrate across the harbourage access points caused cockroaches to be exposed to the insecticide deposit by tarsal contact as they entered or left the harbourage. the effects of varying arena lengt ... | 1998 | 9513941 |
| characterization of a new iridovirus isolated from crickets and investigations on the host range | typical signs of an iridovirus infection were observed in two species of fatally diseased crickets, gryllus campestris l. and acheta domesticus l. (orthoptera, gryllidae). the infection was manifested by hypertrophy and bluish iridescence of the affected fat body cells. electron microscope investigations led to the identification of a new iridovirus, which was termed cricket iridovirus (criv). in negatively stained preparations the size of the icosahedral virus particles ranged from 151 nm (side ... | 1999 | 9878293 |
| the molecular evolution of the allatostatin precursor in cockroaches. | allatostatins (asts) of the tyr/phe-xaa-phe-gly leu/ile-nh2 family are a group of insect neuropeptides that inhibit juvenile hormone biosynthesis by the corpora allata. we have obtained genomic dna sequences that specify the preproallatostatin precursor for the cockroaches, blatta orientalis, blattella germanica, blaberus (cranufer and supella longipalpa. the sequences obtained are similar to those of diploptera punctata and periplaneta americana reported previously. the precursors of all these ... | 1999 | 10098619 |
| comparative insecticide susceptibility and detoxification enzyme activities among pestiferous blattodea. | topical bioassays using propoxur, chlorpyrifos, and lambda-cyhalothrin were conducted on eight cockroach species. based on lethal dose values, the relative toxicities of the insecticide classes were generally pyrethroid > carbamate > organophosphorous. lambda-cyhalothrin and propoxur were more toxic toward the blattidae as compared with the blattellidae. the order of lambda-cyhalothrin toxicity was periplaneta americana > periplaneta brunnea = periplaneta australasiae = periplaneta fuliginosa = ... | 1999 | 10661713 |
| light and electron microscopic study of a rickettsiella species from the cockroach blatta orientalis. | an infection with rickettsiella sp. was responsible for an illness causing heavy body swelling in the oriental cockroach blatta orientalis. reproduction of the colony stagnated. vacuoles with parasitic bacteria occurred mainly in the fat body, but also in nearly all other organs, such as gut epithelium, malpighian tubules, blood cells, and ovarioles. the parasites clearly differed from the symbiotic bacteria of the genus blattabacterium, which regularly occur in the mycetocytes of b. orientalis. ... | 2000 | 11112369 |
| effect of carbon dioxide on the oriental cockroach blatta orientalis. | exposure to high concentrations of carbon dioxide (co2) killed adult and nymphal stages of the oriental cockroach blatta orientalis l. (dictyoptera: blattidae) with lt50 values of 11.5-16.2 h for 60% co2 in air and 5.7-7.1 h for 100% co2 at 20 degrees c; corresponding lt50s at 28 degrees c were 2.8-4.6 h for 60% co2 in air and 2.3-3.6 h for 100% co2. complete kill of mobile stages was obtained within 24 h using 60% co2 at 20 degrees c. survivors of treatments with 100% co2 at 28 degrees c remain ... | 2001 | 11297104 |
| nymphs of the oriental cockroach (blatta orientalis) as passive vectors of causal agents of avian tuberculosis and paratuberculosis. | the potential transmission of the causal agent of paratuberculosis mycobacterium avium ssp. paratuberculosis and avian tuberculosis mycobacterium avium ssp. avium (actinomycetales: mycobacteriaceae) by nymphs of the oriental cockroach blatta orientalis l. (blattodea: blattidae) was investigated by oral infection with mycobacterial suspensions and examination of their droppings and bodies. both the subspecies of m. avium were isolated from droppings at 3 days post-infection and m. a. avium was fo ... | 2003 | 12823831 |
| [occurrence of insect pests in hospitals in poland]. | the prevalent synantropic species present in hospitals in poland was the german cockroach (blattella germanica l.), found in about 70% hospitals. it was followed by oriental cockroach (blatta orientais l.) and pharaoh's ant (monomorium pharaonis l.) occurred in 40% and 17% of hospitals respectively. kitchens, laundries and lavatories were the most often infested places. preliminary investigation of german cockroaches caught in hospitals in poland showed on their body surfaces presence of bacteri ... | 2003 | 12910602 |
| [an anomaly observed in males of blatta orientalis l]. | 1953 | 13167490 | |
| tergal and cercal secretion of blatta orientalis l. | 1956 | 13324087 | |
| [electron microscopy of intracellular symbiosis of various insects. i. fat bodies and symbiotic bacteria of a cockroach (blatta orientalis l.)]. | 1957 | 13531627 | |
| an electrical correlate to the process of learning. experiments in blatta orientalis. | 1964 | 14151423 | |
| [a new cervical organ in blatta orientalis (l.) and periplaneta americana (l.) producing a secretion fluorescent under wood light. (dictyopt. blattidae)]. | 1954 | 14351495 | |
| [first data for characterization of the secretion of the latero-cervical organ of blatta orientalis (l.) and periplaneta americana (l.) (dictyopt. blattidae)]. | 1954 | 14351496 | |
| [notes on blatta orientalis l. biology]. | 1951 | 14864950 | |
| [physiology of locomotion of the blatta orientalis l. i. function of the extrathoracic ganglia]. | 1951 | 14865144 | |
| [physiology of locomotion of the blatta orientalis l. ii. importance of legs in the nerve coordination in walking]. | 1951 | 14865145 | |
| [physiology of locomotion of blatta orientalis l. iii. importance of the thoracic ganglion system]. | 1951 | 14892423 | |
| pathogenicity of intrathoracically administrated bacillus thuringiensis spores in blatta orientalis. | the ability of bacillus thuringiensis to produce septicaemia in periplaneta americana and blatta orientalis has been investigated. spores and crystals from several wild-type strains as well as spores of a b. thuringiensis crystal-deficient mutant, were first orally administrated at high doses, and no significant mortality was recorded. intrathoracic injection of spore suspensions in p. americana revealed that this species is not very susceptible to b. thuringiensis spores. b. orientalis, by cont ... | 2006 | 16777139 |
| 'candidatus rhabdochlamydia crassificans', an intracellular bacterial pathogen of the cockroach blatta orientalis (insecta: blattodea). | the genus rickettsiella comprises various intracellular bacterial pathogens of arthropods, exhibiting a chlamydia-like developmental cycle. species may be divided into two main groups, the r. popilliae-r. grylli group and the r. chironomi group. previous phylogenetic studies based on the 16s ribosomal rna encoding gene showed that two rickettsiella species, one from each group, belong in reality to two distantly related lineages, the gamma-proteobacteria (r. grylli) and the chlamydiales ('candid ... | 2007 | 16934426 |
| [evaluation of specific activity of preparations of allergens from synanthropic insects]. | physical, chemical and immunobiological characteristics of allergens from synanthropic insects were studied by tests for anaphylaxis, indirect degranulation of mast cells test and elisa. sera from 20 patients with severe and intermediate atopic asthma with sensiblization to common allergens have been studied. all extracts of allergens from synanthropic insects (german cockroach, oriental cockroach, american cockroach, speckled feeder cockroach, cricket, common house fly, brown house moth, confus ... | 2006 | 17297885 |
| juvenile hormone and methyl farnesoate production in cockroach embryos in relation to dorsal closure and the reproductive modes of different species of cockroaches. | juvenile hormone (jh), produced by the corpora allata (ca), is first detectable after dorsal closure, a conspicuous event in embryogenesis. the present research found that the timing of dorsal closure was consistently at about 45% of the total embryonic development time across most of the oviparous and ovoviviparous cockroach species examined. these included the ovoviviparous cockroaches blaberus discoidalis, byrsotria fumigata, rhyparobia maderae, nauphoeta cinerea, phoetalia pallida, schultesi ... | 2007 | 18000875 |
| identification of cuticular lipids eliciting interspecific courtship in the german cockroach, blattella germanica. | the cuticular surface of sexually mature females of the german cockroach contains a sex pheromone that, upon contact with the male's antennae, elicits a characteristic species-specific courtship behavior. this female-specific pheromone is a blend of several long-chain methyl ketones, alcohols and aldehydes, all derived from prominent cuticular hydrocarbons found in all life stages of this cockroach. we found that contact with the antennae of 5 out of 20 assayed cockroach species elicited courtsh ... | 2008 | 18183359 |
| cockroach infestation on seagoing ships. | cockroaches are detected ashore worldwide. at present, little is known about cockroach infestation on ships. the authors' objective in this study was to assess the current prevalence of cockroach infestation on seagoing vessels. in august 2005, port officials investigated cockroach infestation on 59 ships in hamburg's port via standardized procedures (ie, illuminating hiding places and using pyrethrum spray). about 3 minutes after illumination or chemical provocation, the inspectors counted the ... | 2008 | 18479998 |
| a survey on species and prevalence rate of bacterial agents isolated from cockroaches in three hospitals. | the presence of cockroaches has health implications, such as nosocomial infection, as the insects move freely from areas within and around hospitals that may harbor pathogenic organisms. the goals of the present study were to determine species of bacteria isolated from cockroaches found in three tehran hospitals, and to determine distribution of potential vectors by species and sex. the study is descriptive laboratory research. a total of 305 cockroaches from three species were trapped and ident ... | 2009 | 18973441 |
| blattabacteria, the endosymbionts of cockroaches, have small genome sizes and high genome copy numbers. | blattabacteria are intracellular endosymbionts of cockroaches and primitive termites that belong to the class flavobacteria and live only in specialized cells in the abdominal fat body of their hosts. in the present study we determined genome sizes as well as genome copy numbers for the endosymbionts of three cockroach species, blattella germanica, periplaneta americana and blatta orientalis. the sole presence of blattabacteria in the fat body was demonstrated by rrna-targeting techniques. the g ... | 2008 | 19025557 |
| evaluation of blatta orientalis (q) nasal gel formulation in milk aspiration induced eosinophilia. | the purpose of the present study was to develop intranasal delivery systems of the homeopathic anti-asthmatic remedy blatta orientalis mother tincture (q) using thermoreversible polymer pluronic f127 (pf127) and mucoadhesive polymer carbopol 934p (c934p). | 2009 | 19552565 |
| temperature and frequency of heart beat in the cockroach. | the frequency of pulsation of the intact heart in nymphs (final (?) instar) of blatta orientalis l. increases with the temperature according to the equation of arrhenius. the constant micro has typically the same value, within reasonable limits of error, as that (12,200) deduced for other, homologous activities of arthropods where the rate of central nervous discharge is perhaps the controlling element, namely 12,500 +/- calories for temperatures 10-38 degrees c. below a critical temperature of ... | 1926 | 19872318 |
| house fly vector for porcine circovirus 2b on commercial pig farms. | we investigated the on-farm potential of common farm invertebrates to transmit porcine circovirus genotype 2 (pcv2) and other non-enveloped viruses. in 2007 (pre-pcv2 vaccination) and 2008 (post-pcv2 vaccination), invertebrate communities were trap-collected (8 trap-dates per year), counted and sorted into genus and species groups on 5 farm study sites within england. total dna was extracted from feces of representational cross-sections of pigs on each farm in each year and also from intact samp ... | 2010 | 21145672 |
| anti-asthmatic and anti-anaphylactic activities of blatta orientalis mother tincture. | to study the anti-asthmatic and anti-anaphylactic activities of blatta orientalis mother tincture (b. orientalis mt), a homeopathic medicine, in experimental animal models. | 2011 | 21784330 |
| phylogenetic position of lophomonas striata bütschli (parabasalia) from the hindgut of the cockroach periplaneta americana. | lophomonas striata is a multiflagellate parabasalid commensal in the hindgut of the omnivorous cockroaches blatta orientalis and periplaneta americana. its closest relatives were traditionally thought to include similar multiflagellate parabasalids with a single flagellar area that degenerates during mitosis, such as joenia and kofoidia. however, molecular phylogenetic analyses have shown that "lophomonads" are not monophyletic. we have determined the ssu rrna sequence of l. striata and we find ... | 2011 | 21840257 |
| development of a pcr-restriction fragment length polymorphism protocol for rapid detection and differentiation of four cockroach vectors (group i "dirty 22" species) responsible for food contamination and spreading of foodborne pathogens: public health importance. | assessing the adulteration of food products and the presence of filth and extraneous materials is one of the measures that the u.s. food and drug administration (fda) utilizes in implementing regulatory actions of public health importance. to date, 22 common pest species (also known as the "dirty 22" species) have been regarded by this agency as the spreaders of foodborne diseases. we have further categorized the dirty 22 species into four groups: i has four cockroach species, ii has two ant sp ... | 2011 | 22054189 |
| incidence of bacteria of public health interest carried by cockroaches in different food-related environments. | the aim of this study was to determine the incidence of bacteria of public health interest transmitted by cockroaches in different food-related environments. from april to november, cockroaches were trapped in 11 buildings in different urban areas of western andalusia (spain): three hotels, four grocery stores, a catering establishment, a food-industry plant, a health center, and a care home. the presence of a number of bacterial species, including salmonella, in these food-related environments ... | 2012 | 23270179 |
| comparative genomics of blattabacterium cuenoti: the frozen legacy of an ancient endosymbiont genome. | many insect species have established long-term symbiotic relationships with intracellular bacteria. symbiosis with bacteria has provided insects with novel ecological capabilities, which have allowed them colonize previously unexplored niches. despite its importance to the understanding of the emergence of biological complexity, the evolution of symbiotic relationships remains hitherto a mystery in evolutionary biology. in this study, we contribute to the investigation of the evolutionary leaps ... | 2013 | 23355305 |
| life history and biology of the invasive turkestan cockroach (dictyoptera: blattidae). | the turkestan cockroach, blatta lateralis (walker), has become an important invasive species throughout the southwestern united states and has been reported in the southern united states. it is rapidly replacing the oriental cockroach, blatta orientalis (l.), in urban areas of the southwestern united states as the most important peri-domestic species. they typically inhabit in-ground containers such as water meter, irrigation, and electrical boxes, raises of concrete, cracks and crevices, and ho ... | 2013 | 24498744 |
| external bacterial flora and antimicrobial susceptibility patterns of staphylococcus spp. and pseudomonas spp. isolated from two household cockroaches, blattella germanica and blatta orientalis. | a study was performed to estimate the prevalence of the external bacterial flora of two domestic cockroaches (blattella germanica and blatta orientalis) collected from households in tebessa (northeast algeria). three major bacterial groups were cultured (total aerobic, enterobacteria, and staphylococci) from 14 specimens of cockroaches, and antibiotic susceptibility was tested for both staphylococcus and pseudomonas isolates. culturing showed that the total bacterial load of cockroaches from dif ... | 2015 | 25966760 |
| cuticle fatty acid composition and differential susceptibility of three species of cockroaches to the entomopathogenic fungi metarhizium anisopliae (ascomycota, hypocreales). | differences in free fatty acids (ffas) chemical composition of insects may be responsible for susceptibility or resistance to fungal infection. determination of ffas found in cuticular lipids can effectively contribute to the knowledge concerning insect defense mechanisms. in this study, we have evaluated the susceptibility of three species of cockroaches to the entomopathogenic fungi metarhizium anisopliae (metschnikoff) sorokin by topical application. mortality due to m. anisopliae was highly ... | 2015 | 26470187 |
| isolation and characterization of α-endosulfan degrading bacteria from the microflora of cockroaches. | extensive applications of organochlorine pesticides like endosulfan have led to the contamination of soil and environments. five different bacteria were isolated from cockroaches living in pesticide contaminated environments. according to morphological, physiological, biochemical properties, and total cellular fatty acid profile by fatty acid methyl esters (fames), the isolates were identified as pseudomonas aeruginosa g1, stenotrophomonas maltophilia g2, bacillus atrophaeus g3, citrobacter amol ... | 2016 | 27281995 |