| ultrastructural comparison of the midgut epithelia of fleas with different feeding behavior patterns (xenopsylla cheopis, echidnophaga gallinacea, tunga penetrans, siphonaptera, pulicidae). | this morphological study describes the ultrastructure of the midgut of three flea species, including temporary parasitic fleas (both sexes of xenopsylla cheopis, males and immature females of echidnophaga gallinacea and tunga penetrans) and stationary parasitic fleas (mature females of e. gallinacea and t. penetrans). (1) three cell types (a,b,c) constitute the midgut epithelium, each appearing in a characteristic and constant frequency along the whole midgut, a) the functional digestive cells f ... | 1976 | 8972 |
| area control of chigger mites with granules and concentrated sprays of chlorpyrifos. | | 1978 | 75217 |
| stylostome formation by leptotrombidium mites (acari: trombiculidae). | the modes of stylostome formation by larvae (chiggers) of leptotrombidium intermedium, l. fletcheri, l. arenicola, and l. deliense in parasitized mouse skin were studied histologically in relation to their capacity to transmit rickettsia tsutsugamushi. three types of stylostome formation were recognized among the different species: the epidermal stylostome formed by the larva of l. intermedium; the mesenchymal stylostome formed by the larva of l. fletcheri; and, the mixed stylostome formed by th ... | 1978 | 98623 |
| identification and antigenic typing of rickettsia tsutsugamushi in naturally infected chiggers (acarina: trombiculidae) by direct immunofluorescence. | rickettsia tsutsugamushi organisms were detected and typed antigenically by direct immunofluorescence in mites from laboratory-maintained infected colonies of leptotrombidium (leptotrombidium) fletcheri and l. (l.) arenicola. rickettsiae were identified most readily in unengorged larvae, but were also discernable in engorged larvae and all post-larval stages of the vectors. | 1978 | 103449 |
| rickettsia tsutsugamushi infections in chiggers and small mammals on a mature oil palm estate. | an epidemiological study in a mature oil palm estate in peninsular malaysia has demonstrated a low prevalence of r. tsutsugamushi infection in small mammals. the direct fluorescent antibody technique for assaying infections in chiggers proved more sensitive than mouse inoculation. most infections in both chiggers and rodents were caused by the karp strain. | 1978 | 107596 |
| [new species of chiggers, straelensia taurica sp. n. (acarina, leeuwenhoekiidae, apoloniimae)]. | a new species of the trombiculid mites, straelensia taurica sp. n., is described. the mites were found on the hare lepus europaeus in the crimea. the new species is closely related to straelensia europaea vercoammen--grandjean et kolebinova, 1968 and s. africana vercammen--grandjean, 1971 but differs in the measurments: size (ip=558), galeal seta (ga=b) and other characters. | 1975 | 130604 |
| chigger (acarina:trombiculidae) surveys of the west coast beaches of sabah and sarawak. | leptotrombidium (leptotrombidium) arenicola traub, a vector of scrub typhus, had previously been found to occur in the coastal vegetation behind the edge of open sand along the beaches of peninsular malaysia. surveys of the west coast beaches of sabah and sarawak were conducted to determine if this species occurs in similar habitat in east malaysia on the island of borneo. leptotrombidium (l.) arenicola was not collected from the eighteen sites studied. of the 11,982 mite larvae collected, 55 pe ... | 1977 | 411176 |
| numbers of leptotrombidium (leptotrombidium) deliense (acarina: trombiculidae) and prevalence of rickettsia tsutsugamushi in adjacent habitats of peninsular malaysia. | numbers of l. (l.) deliense larvae were determined in adjacent habitats over a 16 month period. both r. argentiventer and r. tiomanicus were highly efficient hosts for l. (l.) deliense. r. argentiventer was host to significantly greater numbers of chiggers per rat than was r. tiomanicus. the 2 habitats were similar in numbers of chiggers collected. no consistent correlation was apparent between numbers of chiggers and any single weather factor, but the chigger population seemed to be adversely a ... | 1977 | 411177 |
| isolation of rickettsia tsutsugamushi from mammals and chiggers (fam. trombiculidae) in the pescadores islands, taiwan. | | 1978 | 418538 |
| field evaluation of dimethoate as a systemic for the control of chigger mites in the pescadores island of taiwan. | a 0.25% concentration of dimethoate applied as a surface coat on bait grain was evaluated in an open field trial in the pescadores islands of taiwan for the systemic control of chigger mites. unsatisfactory levels of control were observed on all 4 species of mammals studied. chigger control with systemics does not appear practical at this time. | 1979 | 483017 |
| [siphonaptera/fleas (author's transl)]. | fleas are small, reddish-brown, wingless insects with a laterally compressed body and a pronounced third pair of legs adapted to leaping. of the 100 species found in middle europe, hardly a dozen are of medical importance, they concern mainly people in contact with domestic animals. the cat flea, ctenocephalides felis felis, and the bird flea. ceratophyllus gallinae, are the most important human-pathogenic species in our region. a flea bite shows first as a haemorrhagic punctum, accompanied by i ... | 1979 | 493245 |
| tungiasis (tunga penetrans) in utah. | | 1979 | 512769 |
| vertical transmission in chigger borne rickettsiosis. | | 1978 | 581279 |
| a case of eutrombicula alfreddugesi (chiggers) in a cat. | | 1977 | 584095 |
| [ectoparasites of small mammals in the eastern portion of the baikal-amure mainline]. | 11.501 ectoparasites of 45 species were collected from small mammals (rodents, shrews and double-toothed rodents) in the north-eastern part of priamurje. the parasitecoenoses are formed in general by gamasid mites (60.4%) and lice(24.7%) but faunistically fleas (19 species or 42.2%) are dominant. among all ectoparasites the gamasid mites, laelaps clethrionomydis and hirstionyssus isabellinus, and the louse hoplopleura acanthopus account for 64.9%. the impoverishment of the arthropod fauna in the ... | 1978 | 733323 |
| experiments on chickens placed on ground endemic of classical scrub typhus in akita prefecture, japan. | the chicken is available as a bait animal for the study of vector mites and has been found to be infected by chigger mite bite in an area endemic of scrub typhus. l. pallidum and l. palpale were reconfirmed to be zoophilic for the chicken. it is suggested a walking bird can serve as a vector--carrying mites from one place to another. r. orientalis can persist subclinically for a certain period in the spleen and liver of chickens placed on the gound endemic of scrub typhus. specimens of l. pallid ... | 1976 | 823258 |
| the acquisition of rickettsia tsutsugamushi by chiggers (trombiculid mites) during the feeding process. | | 1975 | 829479 |
| the effect of forest litter burning on populations of the chigger eutrombicula alfreddugesi (acarina: trombiculidae). | | 1977 | 903929 |
| laboratory tests of dimethoate for systemic control of chigger (acarina: trombiculidae) population on rodents. | | 1977 | 903939 |
| tunga penetrans (sarcopsylla penetrans) as a cause of agalactia in sows in the republic of zaire. | | 1976 | 936443 |
| letter: tunga penetrans infestation in pigs. | | 1976 | 936467 |
| correlation of chigger abundance with temperature at a hyperendemic focus of scrub typhus. | | 1976 | 957048 |
| field evaluation of arthropod repellent netting as a ground cloth against ticks. | tick repellent, wide-mesh net ground cloths were tested against amblyomma americanum (linnaeus) by the co2 bait technique. two repellents, n,n-diethyl-metatoluamide (deet) and 3 acetyl-2-(dimethyl-5-heptenyl)-oxazoladine, and two netting fabrics were compared. all combinations tested provided over 90% protection. the effectiveness of repellent ground cloths against chiggers is discussed. | 1976 | 961999 |
| experiments on chickens placed on ground endemic of classical scrub typhus in akita prefecture, japan. | the chicken is available as a bait animal for the study of vector mites and has been found to be infected by chigger mite bite in an area endemic of scrub typhus. l. pallidum and l. palpale were reconfirmed to be zoophilic for the chicken. it is suggested a walking bird can serve as a vector--carrying mites from one place to another. r. orientalis can persist subclinically for a certain period in the spleen and liver of chickens placed on the ground endemic of scrub typhus. specimens of l. palli ... | 1976 | 987110 |
| a new species of chigger (acarina: thrombiculidae) from the midway islands. | | 1975 | 1159732 |
| study on vector mites of tsutsugamushi disease in cheju island, korea. | because no reference on trombiculid mites (acarina: trombiculidae) in cheju island where tsutsugamushi disease is highly endemic had been available, studies on trombiculid mites in cheju island were implemented during the period of august 1991-april 1992, and the results obtained are summarized as follows: (1) the species and numbers of the field rodents collected were 143 apodemus agrarius chejuensis (92.3%), 11 crocidura lasiura (7.1%) and 1 micromys minutus (0.6%). from total 12,075 chiggers ... | 1992 | 1297424 |
| [tungiasis. a clinical case]. | a 22 year old chilean male presented with necrotic lesions of the 5 toes of the right foot and the heal of the left foot. he had spent 7 months traveling in the amazona region of brazil. surgery was performed to clean the areas where eggs of tunga penetrans were identified. | 1992 | 1341822 |
| [leptotrombidium scutellare in transmission of epidemic hemorrhagic fever virus]. | to further elucidate the role of leptotrombidium scutellare in transmission of epidemic hemorrhagic fever virus (ehfv), a series of studies were carried out from 1988 to 1990. ehfv was isolated from both larvae of free mites collected from the grassland of endemic areas and larvae of filial mites hatched in the laboratory. the suckling mice bitten by these larvae were infected by ehfv. because only the larvae of chigger mite can bite vertebrate hosts and only take a full meal in its entire life ... | 1992 | 1363219 |
| parasitic arthropods of sympatric meadow voles and white-footed mice at fort detrick, maryland. | twelve species of parasitic arthropods (one sucking louse, two fleas, one tick, and eight mites) were recovered from 51 meadow voles, microtus pennsylvanicus (ord); whereas nine species (one sucking louse, one bot, three fleas, one tick, and three mites) were collected from 48 white-footed mice, peromyscus leucopus (rafinesque), live-trapped on the grounds of fort detrick, frederick county, md., during 1990 and 1991. the most commonly collected arthropods from m. pennsylvanicus were the fur mite ... | 1992 | 1404254 |
| bite-count evaluation of the repellency of n,n-diethyl-3-methylbenzamide to larval eutrombicula alfreddugesi (acari: trombiculidae). | larvae of the pest chigger mite eutrombicula alfreddugesi oudemans, 1910, exhibited a low repellent threshold for n,n-diethyl-3-methylbenzamide (deet) in a field setting. use of a deet-based repellent significantly reduced chigger mite infestation. efficacy of aerosol formulations was significantly diminished with 9% (ai) deet. e. alfreddugesi utilized both direct and indirect paths to infest the human body. direct infestation led to the highest body region bite counts. distribution of e. alfred ... | 1992 | 1404267 |
| epidemiology of tsutsugamushi disease in relation to the serotypes of rickettsia tsutsugamushi isolated from patients, field mice, and unfed chiggers on the eastern slope of mount fuji, shizuoka prefecture, japan. | a total of 59 strains of rickettsia tsutsugamushi were isolated from patients (24 isolates), apodemus speciosus mice (30 isolates), and unfed larvae of leptotrombidium scutellare (2 isolates) and leptotrombidium pallidum (3 isolates) in the gotenba-oyama district, shizuoka prefecture, japan. all these isolates were classified into the three serotypes karp, kawasaki, and kuroki based on reactivity with strain-specific monoclonal antibodies. kawasaki- and karp-type rickettsiae were isolated from l ... | 1992 | 1452653 |
| clothing impregnations of dibutylphthalate and permethrin as protectants against a chigger mite, eutrombicula hirsti (acari: trombiculidae). | a field study to compare the effects of wearing military uniforms treated with permethrin or dibutylphthalate as protection against the chigger eutrombicula hirsti (sambon) was conducted in northern queensland, australia, during november 1990. volunteers who wore treated uniforms received significantly fewer chigger attachments than individuals who wore untreated uniforms. australian military uniforms treated with dibutylphthalate provided a 97.6% increase in protection, whereas uniforms treated ... | 1992 | 1460626 |
| chigger mites of the genus leptotrombidium: key to species and their distribution in china. | chigger mites of the genus leptotrombidium (acari: trombiculidae) transmit scrub typhus, caused by rickettsia tsutsugamushi (= r.orientalis) in south-east asia. in china, eighty-two species of leptotrombidium have been recorded; these are listed with the names of provinces where they were found. five species, l.deliense, l.insularae, l.kaohuense, l.rubellum and l.scutellare, have been implicated as chinese vectors of scrub typhus. a brief key is given to the larvae of all but three of the leptot ... | 1992 | 1463907 |
| ectoparasite-induced lesions in mite pockets of the yarrow's spiny lizard, sceloporus jarrovii (phrynosomatidae). | histopathological effects of the chigger, eutrombicula lipovskyana, on the mite pockets of neonatal, juvenile and adult yarrow's spiny lizard, sceloporus jarrovii, were investigated. focal ulcerative dermatitis was noted in all age classes. this reaction was more diffuse in older animals in which penetration as deep as the panniculus occurred. based on the occurrence of inflammatory reactions in neonatal lizards, s. jarrovii appears capable of recognizing foreign antigens shortly after birth. th ... | 1992 | 1474650 |
| description of six new species of the genus leptotrombidium from mindanao island and notes on the medically important genera of chiggers (acari: trombiculidae) of the philippine islands. | in the philippine islands, the genus leptotrombidium currently consists of members of the subgenera leptotrombidium and trombiculindus. the following species are described as new: l. (l.) macacaphilus, l. (l.) longimedian, l. (l.) mindanensis, l. (l.) urogale, l. (l.) oculascutum, l. (t.) roseannleilaniae. the distribution of, and comments on, the known vectors of rickettsia tsutsugamushi, l. (l.) deliense and l. (l.) fletcheri and the previously reported l. (l.) sandfordi, are given. informatio ... | 1992 | 1495044 |
| development and evaluation of dot-immunobinding assay for detection of scrub typhus infection in leptotrombidium fletcheri (acari: trombiculidae). | a dot-immunobinding assay (diba) was compared with a direct fluorescent antibody technique (dfat) for the detection of rickettsia tsutsugamushi infection in leptotrombidium fletcheri (womersley & heaslip). laboratory colonies of infected and noninfected chiggers were examined. the relative proportions of positive, negative, and indeterminate results were significantly different between diba and dfat for infected but not for noninfected chiggers. diba was more sensitive and had a better negative ... | 1992 | 1495069 |
| [tungiasis]. | tungiasis is an inflammation of the skin caused by infestation of a fertilised female sand flea, tunga penetrans. two patients who contracted this skin disease in the tropics (surinam and kenya-uganda) are described. because of the increase of international travelling, import diseases are seen more often. if the disease is known, it is easy to diagnose and to treat tungiasis. | 1992 | 1635601 |
| distribution and prevalence of tunga penetrans in coastal south trinidad, west indies. | | 1991 | 1755071 |
| ectoparasites of commensal rodents in sulawesi utara, indonesia, with notes on species of medical importance. | ectoparasite records are presented for four species of commensal murid rodents (rattus rattus palelae miller & hollister, r. argentiventer (robinson & kloss), r. exulans (peale) and mus musculus castaneus waterhouse) in sulawesi utara, with particular reference to the potential for these arthropods to bite and transmit pathogens to humans. the flea, xenopsylla cheopis (rothschild), was most common on r.r. palelae and is capable of transmitting plague and other pathogens to humans although no cur ... | 1991 | 1768888 |
| efficacy of three pyrethroids against leptotrombidium fletcheri (acari: trombiculidae) infected and noninfected with scrub typhus. | toxicities of three pyrethroids, d-phenothrin, decamethrin, and permethrin, were evaluated in the laboratory against leptotrombidium fletcheri (womersley & heaslip). the susceptibilities between populations of the species infected and noninfected with scrub typhus were investigated. the three pesticides exhibited different toxicities to the chiggers. d- phenothrin was the most toxic, followed by decamethrin, then permethrin. there were no significant differences between susceptibilities of the i ... | 1991 | 1770512 |
| [efficacy of various insecticides in the environmental control of tunga penetrans (l., 1758)]. | in this study the variation of infection prevalence before and after control procedures was utilized as an evaluation tool. the pyrethroids cypermethrine (cymperator 25ec), deltamethrine (k-othrine 25ec and 5osc) were tested. apart from the effects, the results evaluation has also been based on the cost per area and cost benefit, which are relevant items in public health campaigns. we believe all these aspects will help us to evaluate these results and serve as basis for future better insecticid ... | 1991 | 1815285 |
| two new species of chiggers (acari: trombiculidae) from small mammals collected in brazil. | two new species of chiggers are described from mammals collected in fazenda agúa limpa, federal district, brazil: trombewingia brasiliensis from bolomys lasiurus and parasecia lasiurus from b. lasiurus and oxymycterus sp. | 1991 | 1875366 |
| ectoparasites of a population of urban gray squirrels in northern florida. | ectoparasites infesting a population of urban gray squirrels (sciurus carolinensis gmelin) in northern florida were collected monthly during 1974. eleven species were identified: one flea (orchopeas howardi (baker], three suckling lice (enderleinellus longiceps kellogg & ferris, hoplopleura sciuricola ferris, and neohaematopinus sciuri jancke), one tick (dermacentor variabilis say), two mesostigmatid (gamasid) mites (androlaelaps casalis (berlese) and a. fahrenholzi (berlese], and four chiggers ... | 1991 | 1875375 |
| epidemiology of rickettsial diseases. | rickettsial diseases have a diversity of epidemiologic characteristics reflective of the variety of ecologic situations in which the obligate intracellular bacteria are transmitted to humans. for the spotted fever group (sfg) rickettsiae, rickettsia typhi, r. tsutsugamushi, coxiella burnetii, and the human ehrlichial agent, humans are a dead-end host who plays no role in the maintenance of the organism in nature. all rickettsioses exist as zoonoses. moreover, all rickettsiae are found in infecte ... | 1991 | 1884775 |
| determination of the vector species of tsutsugamushi disease in korea. | in order to determine the vector species of tsutsugamushi disease in korea, chiggers were individually dissected, and internal contents were tested for rickettsia tsutsugamushi organisms by means of indirect fa test, and each exoskeleton was mounted on slide for identification. among 4,142 chiggers collected from 48 apodemus agrarius at nine different localities during the period of july-november, 1989, 990 chiggers of 10 species of trombiculidae were dissected and tested. rickettsiae were confi ... | 1991 | 1911628 |
| [tungiasis. jigger flea infestation]. | a case of infestation with tunga penetrans (jigger flea) is described. complete local recovery usually occurs after removal of the intact flea. | 1991 | 1949325 |
| epidemiological studies on host animals of tsutsugamushi disease in korea. | epidemiological studies on host rodents of tsutsugamushi disease were carried out during the period of july-september 1990 at nine localities of central korea. among total 111 wild rodents trapped by the modified sherman live traps, 103 were apodemus agrarius (92.8%), seven were crocidura lasiura (6.3%) and one was microtus fortis (0.9%), showing 24.0% of trapping rate in winter, 11.7% in spring, 11.2% in summer and 12.0% in autumn. out of 103 a. agrarius 84 were parasitized by chiggers, showing ... | 1991 | 1954201 |
| parasitic and phoretic arthropods of sylvatic and commensal white-footed mice (peromyscus leucopus) in central tennessee, with notes on lyme disease. | sixteen species of parasitic or phoretic arthropods were collected from 56 white-footed mice, peromyscus leucopus, live-trapped in central tennessee from april through november 1987. arthropod infestation was compared for mice taken from sylvatic (woodland) versus commensal (household) habitats. three species were recorded from hosts in both habitats: the sucking louse hoplopleura hesperomydis, the flea epitedia wenmanni, and the laelapid mite androlaelaps casalis. twelve of the 13 remaining art ... | 1991 | 2010854 |
| integumental lesions caused by ectoparasites in a wild population of the side-blotched lizard (uta stansburiana). | histopathological effects of ectoparasites on integument were examined for a wild population of the side-blotched lizard uta stansburiana. these included the trombiculid neotrombicula californica, the pterygosomatid mite geckobiella texana; the macronyssid mite ophionyssus natricis (macronyssidae) and the ixodid tick ixodes pacificus. a diffuse inflammatory response occurred at the site of chigger and tick attachment which consisted of histiocyte, heterophil, fibroblast and lymphocyte infiltrati ... | 1991 | 2023329 |
| trombiculid mites (acari: trombiculidae) and rickettsia tsutsugamushi isolated from wild rodents in a new endemic area of japan. | investigations of trombiculid mites and rickettsia tsutsugamushi in wild rodents were made in southern gifu prefecture where patients infected with tsutsugamushi disease recently have been found. a total of 16,396 trombiculid mites, consisting of 10 species from three genera, was collected from 170 apodemus speciosus in two locations. kani-sakahogi and kuze. leptotrombidium scutellare (nagayo et al.) (44.0%) was most predominant, followed by l. pallidum (nagayo et al.) (26.9%); l. fuji (kuwata e ... | 1990 | 2117663 |
| [trombiculiasis, and epidemic of prurigo caused by mites]. | in four villagers parasitic prurigo caused by the autumnal chigger (neotrombicula autumnalis) was diagnosed. the clinical picture consisted of intensely itchy, erythematous papules, at sites where clothes fitted tightly or in body folds. further investigation in the village revealed that in 16 of the 48 homes at least one person in the preceding two months had suffered from prurigo possibly caused by the autumnal chigger. the characteristics of the parasite, the clinical picture, treatment and p ... | 1990 | 2255379 |
| [tungiasis. a clinical case]. | tungiasis is a cutaneous infestation by the female sand flea, tunga penetrans. because of the increase in international travel, the disease is reported in europe, in spite of it being formerly restricted to the equatorial zones. this report describes a case of tungiasis and discusses clinical features, diagnosis and treatment. | 1990 | 2279752 |
| [the alveolar salivary glands of hungry larvae of the chigger hirsutiella zachvatkini]. | heteromorphic parasitic larvae of hirsutiella zachvatkini have four pairs of simple alveolar salivary glands possessing characteristic peculiarities of electron microscopic organisation. each of paired granulosecreting salivary glands has its own dynamics of secretory activity, which is stimulated by a specific functional role connected with feeding on the host. | 1990 | 2349003 |
| ectoparasitic and phoretic arthropods of virginia opossums (didelphis virginiana) in central tennessee. | thirteen species of ectoparasitic (12) or phoretic (1) arthropods were collected from 26 adult virginia opossums, didelphis virginiana, live-trapped from april through september 1987 in davidson county, tennessee. the cat flea ctenocephalides felis and the american dog tick dermacentor variabilis were the predominant species with respect to mean intensity and prevalence. the macronyssid mite ornithonyssus wernecki and the atopomelid mite didelphilichus serrifer, both specific parasites of this h ... | 1990 | 2380870 |
| [trombiculid mites (acarina: trombiculidae) from apodemus agrarius coreae caught at pochun-gun, gyeonggi province and chinhae-city, kyongnam province]. | during october-december 1987, chigger mites infested on the striped field mice (apodemus agrarius coreae) collected at pochun-gun, gyeonggi province and chinhae city, kyongnam province were identified. 1. of 171 back-striped mice collected, chigger mites were found from 58 mice, showing 33.9% of infestation rate. 2. total 865 chigger mites collected were classified into seven species; leptotrombidium pallidum (4.3%), l. palpale(23.0%), l. orientalis(20.2), l. zetum(19.0%). neotrombicula tamiyai( ... | 1989 | 2486831 |
| [tungiasis and tetanus at the university hospital center in brazzaville]. | just like other tropical countries, congo is not free from tetanus. over a period of 11 months the authors treated 44 cases where tetanus entered by various means. the removal of a chick-flea (tunga penetrans) leaves a hole through which the tetanus spore can penetrate: this accounted for 25% of the cases (11 cases). in the group under observation, no death attributable to tetanus occurred. | 1989 | 2491384 |
| ectoparasitic acari found on golden lion tamarins (leontopithecus rosalia rosalia) from brazil. | anesthetized golden lion tamarins (leontopithecus rosalia rosalia), a highly endangered species, were examined for ectoparasites by brushing the fur and swabbing the ears. ectoparasites recovered from the fur included four species of immature ticks (amblyomma spp.), three species of chiggers (euschoengastia sp., microtrombicula brennani and speleocola tamarina), and one species of follicular mite (rhyncoptes anastosi). ectoparasites do not seem to be of particular significance to the health of t ... | 1989 | 2503627 |
| two new species of schoengastiine chiggers (acari: trombiculidae) from brazil and rediagnosis of arisocerus brennan, 1970. | colicus spinosus goff & gettinger, n. sp., is described from marmosa agilis. quadraseta brasiliensis goff & gettinger, n. sp., is described from marmosa agilis, monodelphis americana, and oryzomys capito. all specimens were collected in central brazil. the diagnosis of the genus arisocerus brennan, 1970, is corrected to describe the setation of the palpal tarsus as 7bs rather than 6bs as listed in the original description. | 1989 | 2585450 |
| chigger mite infestation of small mammals in a feral biotope of a public park area of south delhi. | examination of bandicota bengalensis (8) and suncus murinus (4) trapped in a feral biotope of a public park area of south delhi revealed presence of the known scrub typhus vector leptotrombidium (l.) deliense, the suspected vector gahrliepia (s.) ligula and gahrliepia (walchia) sp. of chigger mites, on them. the epidemiologically important population indices (chigger infestation rate-cir and incidence rate--1r) were estimated. the overall cir of the three mite species on the hosts was 2.83 mite/ ... | 1989 | 2638383 |
| tungiasis: report of one case and review of the 14 reported cases in the united states. | tungiasis is a cutaneous parasitic infestation by the fertilized female sand flea tunga penetrans. it is prevalent in tropical africa and in central and south america. despite increasing air travel to and from these countries, surprisingly the disease is rarely reported in the united states. this report describes another case of tungiasis and reviews the 14 previously reported cases in the united states. clinical features, differential diagnosis, treatment, and prophylaxis of tungiasis are discu ... | 1989 | 2654224 |
| tetanus from chigger flea sores. | | 1989 | 2724405 |
| [observations of the sand flea (tunga penetrans) in humans and dogs in french guiana]. | the occurrence of sand fleas (tunga penetrans) in a reservation in the north of french guyana is described. the parasite is found on dogs, europeans and children of the local indian tribes. infections in man are supported by a big population of stray dogs as well as by the local cottage construction. due to the simultaneous efficiency against the larvae of dermatobia hominis lvermectin is only of limited suitability for the treatment of tungiasis in dogs. in man single parasites can be removed w ... | 1989 | 2763291 |
| lesions associated with metazoan parasites of wild platypuses (ornithorhynchus anatinus). | pathological findings associated with helminth and arthropod parasites of four wild platypuses (ornithorhynchus anatinus) are described. fourth-stage larval rhabditoid nematodes (?cylindrocorporidae) found partially embedded in the stratum corneum were associated with mild acanthosis, orthokeratotic hyperkeratosis and inconstant subacute dermatits. a filarioid nematode (?lemdaninae) was found in hypodermal lymphoid tissue. a larval trichostrongyloid nematode was found in the dermis, with no evid ... | 1989 | 2810552 |
| hemorrhagic fever with renal syndrome: mode of transmission to humans. | hemorrhagic fever with renal syndrome (hfrs) is a viral disease spread to humans from persistently infected rodents and other small mammals. the consensus of opinion regarding the mechanism of transmission to man indicates a principal role for respiratory infection from aerosols of infectious virus from rodent urine, feces and saliva. interhuman, secondary spread of infection does not occur. the role of ectoparasites in virus transmission is undefined. however, epidemiologic considerations and v ... | 1987 | 2889846 |
| [species composition of the parasitic cenoses of gerbils]. | complex studies of parasitic cenoses of four species of gerbils were carried out in turkmenia. over 60 forms of parasites were found out as follows: three species of blood parasites, 12 species of coccidia, 8 species of cestodes, 12 species of nematodes, one species of acanthocephalus, three species of chigger mites, 15 species of gamasid mites, 6 species of ixodid ticks, fleas and lice. the list of species of parasites with regard to their hosts is provided. | 1987 | 2963254 |
| tunga penetrans. | we describe a patient who acquired tungiasis while traveling in an area where the condition is endemic. the pathogenesis, diagnosis, and treatment of this tropical disease are presented. | 1988 | 3203533 |
| host immune responsiveness to the chigger, eutrombicula cinnabaris. | chigger infestation is often associated with severe cutaneous reactions. mice were given four infestations with the pest chigger eutrombicula cinnabaris, and each exposure was separated by a 14-day mite-free period. mean duration of engorgement was nine to ten days for a first exposure and four to five days for a fourth exposure. an initial exposure did not elicit macroscopic changes at chigger attachment sites, while all third and fourth exposure animals had marked reactions consisting of eryth ... | 1988 | 3250342 |
| chigger relief. | | 1988 | 3344650 |
| chiggers. | chigger infestations are caused by mite larvae that feed on the host's epidermal cells. the combination of digestive enzymes secreted by the mite and the immune response of the host produces the typical "chigger bite." intense pruritus is the usual response, but more severe reactions and chigger-borne disease may also occur. treatment is primarily symptomatic and consists of antipruritics, antihistamines and steroids. chigger infestation may be minimized by the use of proper clothing and insect ... | 1987 | 3618452 |
| parasitism of larval ixodes ticks by chigger mites and fed female ornithodoros ticks by ornithodoros males. | | 1986 | 3806340 |
| [trombiculid mite--neotrombicula autumnalis (shaw 1790)--in veterinary medicine. nervous systems in dogs following massive infestation]. | initially the biology of chigger mites and the clinical course of trombiculosis is reviewed. this is followed by a case study dealing for the first time with nervous symptoms associated with this disease. twenty-four hours after a massive infestation of at least 2000 larvae of n. a. autumnalis two male yorkshire terriers of approximately three years of age showed initial stages of paresis of the rear extremities in a few hours. the lameness worsened to such an extent that the front extremities w ... | 1985 | 3992577 |
| a team approach to a disease survey on an aboriginal island (orchid island, taiwan). iv. mosquitos and chiggers on lan-yü (orchid island), taitung hsien, taiwan. | | 1974 | 4153585 |
| an outbreak of tunga penetrans in a pig herd. | | 1967 | 4166051 |
| ecological considerations in scrub typhus. 3. methods of area control. | the best of the known methods for control of the chigger vectors of scrub typhus is the application of dieldrin to the ground and low-lying vegetation as a fog or spray at the rate of 2.5 lb to the acre (28 kg/hectare). this has produced a more than 91% reduction in the numbers of leptotrombidium (l.) akamushi (brumpt, 1910) and l. (l.) deliense (walch, 1922) for at least 2 years. aldrin applied at the rate of 2.25 lb per acre (2.5 kg/hectare) is also highly effective, but less so than dieldrin. ... | 1968 | 4177522 |
| the ecology of chigger-borne rickettsiosis (scrub typhus). | | 1974 | 4212400 |
| chigger infestation in a canada goose. | | 1970 | 4248449 |
| transmission of rickettsia orientalis to man by leptotrombidium akamushi at a scrub typhus endemic area in akita prefecture, japan. | during the summer seasons of 1956 through 1970, 93 larval trombiculid mites were removed from 386 individuals who had been bitten by chiggers in jumonji, akita prefecture. all 87 larvae that were available for examination were identified as leptotrombidium akamushi. infestation of man occurred predominantly during july and august, but the period extended from june to november. the duration of attachment was approximately 1 to 3 days. usually only 1 chigger was found on a victim but on occasion a ... | 1974 | 4451238 |
| current concepts of the ecology of chigger-borne rickettsiosis (scrub typhus). | | 1974 | 4600524 |
| chiggers parasirizing small mammals in the southern part of yugoslavia (acarina: trombiculidae). | | 1972 | 4670818 |
| [natural infection of chigger mites with rickettsia tsutsugamushi in the primorsky territory]. | | 1968 | 4975230 |
| further evaluation of insecticides to control the chigger neoschongastia americana on turkeys. | | 1972 | 5016666 |
| new host records of the chigger neoschoengastia americana from texas (acarina: trombiculidae). | | 1972 | 5019198 |
| a new and unusual chigger species of the genus and subgenus gahrliepia collected from southern thailand (prostigmata, trombiculidae). | | 1972 | 5019201 |
| a new species of chigger, blankaartia pauli (acarina: trombiculidae), from the southeastern united states. | | 1972 | 5057499 |
| endoparasitic chiggers. vi. neoschoengastia esorhina sp. n. (acarina: trombiculidae), a second intranasal chigger of birds. | | 1971 | 5090976 |
| evaluation of insecticides to control the chigger neoschongastia americana on turkeys. | | 1971 | 5158353 |
| chiggers of the genus helenicula of the old world including descriptions of 9 new species (acarina: prostigmata, trombiculidae). | | 1971 | 5160263 |
| ecological considerations in scrub typhus. 1. emerging concepts. | scrub typhus infection is now known to occur in geographical and ecological areas where its presence was hitherto unsuspected-north and west of the indus river and in south-eastern siberia; in semi-desert, montane desert, and alpine terrain high in the himalayas, as well as in primary jungle. additional data are presented to support the hypothesis that "ecological islands", containing basically similar faunas of rodents and ectoparasites, exist on scattered mountains in the pakistan himalayas, d ... | 1968 | 5303404 |
| ecological considerations in scrub typhus. 2. vector species. | certain features, characteristic of outbreaks of scrub typhus, can be explained by the behaviour of the chigger vectors which are remarkably hardy and can survive weeks of freezing or immersion in water. the established vectors are all species of the genus leptotrombidium (leptotrombidium), i.e., l. (l.) akamushi (brumpt, 1910), l. (l.) deliense (walch, 1922), l. (l.) pallidum (nagayo et al., 1919), and l. (l.) scutellare (nagayo et al., 1921). these chiggers (i.e. larval mites) infest a broad v ... | 1968 | 5303405 |
| parasitism of chiggers on the meadow mouse on the islet "kawamura nakasu" in the lower regions of the river agano, niigata prefecture, japan, in 1966. isolation of rickettsia from the host and parasites. | | 1967 | 5625329 |
| [sarcopsyllosis (tungiasis or peruvian chigoe flea]. | | 1968 | 5674289 |
| myotrombicula vercammeni, a new species of chigger (acarina: trombiculidae) from thailand. | | 1965 | 5835482 |
| iguanacarus, a new subgenus of chigger mites from nasal fossae of the marine iguana in the galapagos islands, with a revision of the genus vatacarus southcott (acarina, trombiculidae). | | 1965 | 5890926 |
| watkins sg: vatacarus (iguanacarus) intermedius, a third chigger mite from the nasal fossae of the marine iguana in the galapagos islands (acarins: trombiculidae). | | 1965 | 5890927 |
| a new genus of chigger (acarina: trombiculidae) from western mexico. | | 1966 | 5941567 |
| characterization of rickettsia tsutsugamushi strains in two species of naturally infected, laboratory-reared chiggers. | the strains of rickettsia tsutsugamushi found in naturally infected, laboratory-reared leptotrombidium (leptotrombidium) arenicola and l. (l.) fletcheri chiggers were characterized by direct immunofluorescence (fa) and by mouse and monkey virulence tests. the strains existing in the l. (l.) arenicola chiggers consisted of different combinations of ta716, ta763, ta686, karp, and kato. in addition to these five strains, gilliam was found in the l. (l.) fletcheri chiggers. results indicate that ind ... | 1982 | 6176132 |
| occupational dermatitis associated with straw itch mites (pyemotes ventricosus). | a 1981 outbreak of dermatitis in austin, tex, was traced to occupational exposure to wheat infested with the straw itch mite, pyemotes ventricosus; the wheat was being sold for decorative purposes by an imported-goods store located on the second floor of a large, modern, shopping mall complex. in addition to an extensive varicelliform skin eruption, one employee also had chills, fever, malaise, diarrhea, and anorexia associated with her exposure to these mites. the straw itch mite has been assoc ... | 1982 | 6210784 |
| the prevalence of sand flea (tunga penetrans) among primary and post-primary school pupils in choba area of the niger delta. | | 1984 | 6334329 |
| scrub typhus and chiggers in northern thailand. | it was reconfirmed that l. deliense was the most dominant chigger during the rainy season in northern thailand. overall prevalence of igg antibody against r. tsutsugamushi among the rural villagers in the northern most part of thailand was nearly 60% at the level over 1 : 10 by an indirect immunofluorescent test. the level of igg and igm antibody titers was considerably high as greater than or equal to 1 : 2560 in some sera, but did not markedly vary by age groups or sexes. based on detection of ... | 1984 | 6441267 |
| [occurrence of ticks and chigger mites in urban areas (author's transl)]. | | 1980 | 6446416 |