Publications
| Title | Abstract | Year(sorted descending) Filter | PMID Filter |
|---|
| contributions to the ecology of colorado tick fever virus. 2. population dynamics and host utilization of immature stages of the rocky mountain wood tick, dermacentor andersoni. | 1976 | 1263215 | |
| acquired resistance to ticks. i. passive transfer of resistance. | guinea-pigs developed resistance to larvae of the ixodid tick, dermacentor andersoni, after one infestation. resistance was characterized by guinea-pigs allowing fewer larvae to engorge (5-15%) during a second exposure than during an initial infestation (70-90%). larvae feeding on resistant hosts weighed less than larvae engorging on a host with no previous exposure to ticks. evidence is presented which indicates that this resistance can be passively transferred with viable lymph node cells, but ... | 1976 | 1254319 |
| absence of anaplasma marginale infection in american bison raised in an anaplasmosis endemic area. | blood was collected at slaughter from 132 adult american bison (bison bison) raised in an anaplasmosis endemic area where the vector dermacentor andersoni (equals venustus) is indigenous. hematologic studies revealed no indication of clinical anaplasmosis. card agglutination and complement-fixation tests on all bison serums were negative. eleven anaplasmosis-susceptible calves each inoculated with 204 ml of blood pooled from 12 bison did not develop anaplasmosis. results of this study indicate a ... | 1975 | 1152178 |
| parasites of the black-tailed jackrabbit in north central colorado. | forty-four black-tailed jackrabbits, lepus californicus melanotis mearns, 1890, were collected near denver from august, 1972, through july, 1973, and amined for parasites. recovered parasites and their infection rates were: eimeria sp. 100%, cittotaenia sp.27%, coenuri of multiceps sp. 57%, cediopsylla inaequalis 14%, hoplopsyllus affinis 9%, haemodipsus setoni 2%, dermacentor andersoni 14%, and haemaphysalis leporis-palustris 25%. | 1975 | 1142561 |
| biochemical and physiological studies of certain ticks (ixodoidea): isolation and partial identification of a new fatty acid in eggs of dermacentor andersoni stiles (ixodidae). | 1974 | 4837887 | |
| a proposed site of fluid secretion in the salivary gland of the ixodid tick dermacentor andersoni. | 1973 | 4127146 | |
| creatine phosphokinase elevation in a case of tick paralysis. | the results of studies on a case of tick paralysis in a female child are described. the patient was paralysed by a single female specimen of dermacentor andersoni stiles attached to the left temporal area of the scalp. paralysis of the lower limbs, incoordinate respiration and weakness of the arms were evident.the findings on physical examination and the results of diagnostic laboratory procedures are reported and the possible significance of the results is discussed. the only abnormal laborator ... | 1973 | 4707234 |
| biochemical and physiological studies of certain ticks (ixodoidea). fatty acid composition of the female, eggs, and larva of dermacentor andersoni (stiles) (ixodidae). | 1973 | 4744042 | |
| isolation and characterization of symbiotes from the rocky mountain wood tick, dermacentor andersoni. | 1973 | 4202564 | |
| sites of attachment of 'prairie' and 'montane' dermacentor andersoni (acarina: ixodidae) on cattle. | 1972 | 5036197 | |
| fine structure of rickettsia canada in tissues of dermacentor andersoni stiles. | preliminary observations on growth and developmental fine structure of rickettsia canada in various organs and tissues of the hard tick, dermacentor andersoni stiles, are reported. r. canada is typically rod-shaped, being delimited with a three-layered wall having a velvety coating adsorbed to its exterior surface. a finely reticulated cytoplasmic matrix containing prominent ribosomes is delimited with a three-layered unit membrane. average length and width of these organisms are 1.6 by 0.4 mum. ... | 1971 | 4100833 |
| gross anatomical, histological, and cytological aspects of ovarian development in dermacentor andersoni (stiles (acari: ixodidae). | 1971 | 5105959 | |
| transstadial (nymph-to-adult) infection of anaplasma marginale in dermacentor andersoni stiles. | 1971 | 5160254 | |
| fine structure of oogonial and oocyte development in dermacentor andersoni stiles (acari: ixodidae). | 1971 | 4327965 | |
| fine structure of normal hemocytes in dermacentor andersoni stiles (acari:ixodidae). | 1971 | 4332374 | |
| ovarian intercellular bridges in dermacentor andersoni stiles (acari : ixodidae). | intercellular bridges are present between oogonia and between oocytes of nymphs and newly molted and fasting adult dermacentor andersoni stiles. during these stages there is synchronous development of oogonia and oocytes. these bridges are unique both in their degree of development and in possessing narrow, elongated invaginations of the plasma membrane around both bases. dictyosomes are frequently present in close proximity to bridge bases and vesicles are often noted in bridges between oocytes ... | 1971 | 18631576 |
| attempts to transmit bovine anaplasmosis with anopheles quadrimaculatus say (diptera: culicidae) and dermacentor andersoni stiles (acarina: ixodidae). | 1970 | 5485390 | |
| recognition of anaplasma marginale theiler in dermacentor andersoni stiles (=d. venustus marx) by the fluorescent antibody method. i. smears of nymphal organs. | 1970 | 4189907 | |
| localization of powassan virus in dermacentor andersoni ticks by immunofluorescence. | 1969 | 4905045 | |
| ecology of tick vectors of american spotted fever. | the author reviews the natural history of the tick vectors of american spotted fever. the discussion concerns the ecology of the rocky mountain wood tick, dermacentor andersoni, the american dog tick, dermacentor variabilis, and the lone-star tick, amblyomma americanum, all of which are proven vectors of rocky mountain spotted fever to man. also included are the rabbit tick, haemaphysalis leporispalustris and dermacentor parumapertus, which very rarely bite man but which are considered of import ... | 1969 | 5306621 |
| phenology, behavior, and host-relations of dermacentor andersoni stiles in outdoor "rodentaria" and in nature. | 1968 | 5749472 | |
| effects of vitamin a deficiency and ked resistance on the feeding of dermacentor andersoni on sheep. | 1968 | 5690045 | |
| occurrence of colorado tick fever virus in dermacentor andersoni ticks in british columbia. | 1968 | 5667781 | |
| growth of colorado tick fever (ctf) virus in primary tissue cultures of its vector, dermacentor andersoni stiles (acarina: ixodidae), with notes on tick tissue culture. | 1967 | 6073593 | |
| anaplasmosis. xix. a preliminary study of anaplasma marginale in dermacentor andersoni (stiles) by fluorescent antibody technique. | 1966 | 5335865 | |
| natural history of tick-borne spotted fever in the usa. susceptibility of small mammals to virulent rickettsia rickettsii. | in the ecology of spotted fever rickettsiae, one of the as yet unsolved problems concerns the significance of small animals in the distribution of rickettsia rickettsii in nature. in the bitter root valley of western montana, a great variety of rodents, rabbits and hares are known to serve as the preferred hosts for the immature stages of the vector tick, dermacentor andersoni.the authors analyse the susceptibility of various species of small mammals to virulent r. rickettsii and evaluate their ... | 1966 | 5296999 |
| collection of dermacentor andersoni (stiles) with carbon dioxide and its application in studies of colorado tick fever virus. | 1965 | 5841585 | |
| difference of sites of attachment of dermacentor andersoni stiles to cattle in southeastern alberta and in south central british columbia, in relation to possible existence of genetically different strains of ticks. | 1965 | 14328661 | |
| anaplasma marginale theiler observed in the gut and excreta of dermacentor andersoni stiles (dermacentor venustus marx). | 1964 | 14204828 | |
| nonpathogenic rickettsias related to the spotted fever group isolated from ticks, dermacentor variabilis and dermacentor andersoni from eastern montana. | 1963 | 14053295 | |
| morphology and functioning of the mouthparts of dermacentor andersoni stiles. | 1960 | 13851716 | |
| isolation of a virus closely related to powassan virus from dermacentor andersoni collected along north cache la poudre river, colo. | 1960 | 13838002 | |
| site and mechanism of tick paralysis. | a neurophysiological investigation indicates that the paralysis produced in the dog by the wood tick, dermacentor andersoni stiles, is due to failure in the liberation of acetylcholine at the neuromuscular junction because of a conduction block in the somatic motor fibers produced by the tick "toxin". | 1960 | 14425361 |
| identification of rickettsia rickettsii in the wood tick, dermacentor andersoni, by means of fluorescent antibody. | 1960 | 13688983 | |
| development of colorado tick fever virus in the rocky mountain wood tick, dermacentor andersoni. | 1959 | 13626953 | |
| the possible role of ticks as vectors of leptospire. ii. infection of the ixodid ticks, dermacentor andersoni and amblyomma maculatum, with leptospira pomona. | 1959 | 13806052 | |
| tick paralysis in beef cattle due to dermacentor andersoni. | 1945 | 21009481 | |
| the experimental transmission of colorado tick fever. | 1. the symptoms, history of tick bite, characteristic fever curve, and white blood cell picture should enable the physician to make a diagnosis of colorado tick fever in nearly every case. 2. the typical white blood cell picture is a depression of the total leucocytes with a shift to the left of the granulocytes. basophilic cytoplasmic bodies appear occasionally in lymphocytes 3 to 4 days after clinical recovery. 3. the disease can be transmitted serially in human beings by parenteral injection ... | 1944 | 19871406 |
| the microbial flora of the rocky mountain wood tick, dermacentor andersoni stiles. | 1942 | 16560577 | |
| hereditary transmission of the western type of equine encephalomyelitis virus in the wood tick, dermacentor andersoni stiles. | the western type of equine encephalomyelitis virus can be passed as an hereditary infection in a tick of the family ixodidae, dermacentor andersoni stiles. under experimental conditions, this virus has been carried in this tick for two successive generations, possibly for a third, passing certainly once, and possibly twice, from the female through the eggs to the larvae. the virus-carrying larval, nymphal, and adult stages of this tick, furthermore, are capable of infecting susceptible hosts whe ... | 1941 | 19871094 |
| experimental infection of dermacentor andersoni stiles with the virus of lymphocytic choriomeningitis. | 1939 | 18015117 | |
| etiology of oroya fever : v. the experimental transmission of bartonella bacilliformis by ticks (dermacentor andersoni). | experiments are reported in which bartonella bacilliformis was transmitted from infected to normal rhesus monkeys by the bite of the tick, dermacentor andersoni. a long period of feeding, both on the infected animal and on the normal animal subjected to infection, was required in order to secure positive results. the infection transmitted by the ticks was mild, but definite, as shown by the recovery of bartonella bacilliformis from the lymph nodes and blood. | 1926 | 19869219 |
| a filter-passing virus obtained from dermacentor andersoni. | an invisible, filter-passing virus, pathogenic for the guinea pig, and capable of cultivation on special media for at least seven generations, has been isolated from a tick of the species dermacentor andersoni. one of two monkeys (macacus rhesus) inoculated became infected, and in one rabbit the result was negative. the virus has been transmitted from infected guinea pigs to ticks as also in one instance by tick feeding from an infected tick to a guinea pig the presence of the virus in the tick ... | 1926 | 19869167 |
| cultivation of rickettsia-like microorganisms from the rocky mountain spotted fever tick, dermacentor andersoni. | a systematic study of 74 ticks, the infectivity or non-infectivity of which was determined by biting experiments, inoculation of emulsions, and specific immunity tests, showed the presence in some instances of several types of microorganisms morphologically resembling the inciting microorganism of spotted fever. the most frequently isolated was b. rickettsiformis, n. sp., those less commonly encountered were b. pseudoxerosis, n. sp., and b. equidistans, n. sp. these organisms are non-pathogenic ... | 1926 | 19869142 |
| the survival of leptospira (spirochaeta) icterohaemorrhagiae in nature; observations concerning microchemical reactions and intermediary hosts. | 1. leptospira icterohaemorrhagiae is unable to grow in the urine, either with or without the addition of suitable culture ingredients, the acidity of the urine being detrimental to the growth. it survives less than 24 hours, unless the urine is neutralized or slightly alkalized, when the period of survival is somewhat longer. if suitable nutrient ingredients are added to the neutralized or slightly alkalized urine, the organism is able to grow for about 10 days, after which multiplication ceases ... | 1918 | 19868229 |
| is transfusion-transmitted dengue fever a potential public health threat? | dengue is an arboviruses due to single-stranded enveloped ribonucleic acid viruses, named dengue viruses (denv), that include four serotypes and are mainly transmitted via the bite of mosquitoes of the genus aedes (a. aegypti and a. albopictus). the distribution of the disease was historically limited to intertropical areas; however, during the last thirty years, the perimeter of the disease extended considerably and temperate areas are now at risk of outbreaks. the present global burden of deng ... | 0 | 25964876 |
| importance of ticks and their chemical and immunological control in livestock. | the medical and economic importance of ticks has long been recognized due to their ability to transmit diseases to humans and animals. ticks cause great economic losses to livestock, and adversely affect livestock hosts in several ways. loss of blood is a direct effect of ticks acting as potential vector for haemo-protozoa and helminth parasites. blood sucking by large numbers of ticks causes reduction in live weight and anemia among domestic animals, while their bites also reduce the quality of ... | 0 | 17048307 |
| arthropod surveillance programs: basic components, strategies, and analysis. | effective entomological surveillance planning stresses a careful consideration of methodology, trapping technologies, and analysis techniques. herein, the basic principles and technological components of arthropod surveillance plans are described, as promoted in the symposium "advancements in arthropod monitoring technology, techniques, and analysis" presented at the 58th annual meeting of the entomological society of america in san diego, ca. interdisciplinary examples of arthropod monitoring f ... | 0 | 26543242 |
| gene expression of tissue-specific molecules in ex vivo dermacentor variabilis (acari: ixodidae) during rickettsial exposure. | ticks serve as both vectors and the reservoir hosts capable of transmitting spotted fever group rickettsia by horizontal and vertical transmission. persistent maintenance of rickettsia species in tick populations is dependent on the specificity of the tick and rickettsia relationship that limits vertical transmission of particular rickettsia species, suggesting host-derived mechanisms of control. tick-derived molecules are differentially expressed in a tissue-specific manner in response to ricke ... | 0 | 24180114 |
| asymptomatic petechial eruption on the lower legs. | the authors report an unusual case of rocky mountain spotted fever that presented as an asymptomatic petechial eruption on the lower legs. rocky mountain spotted fever is rare in new england and, as such, is typically not on the differential diagnosis when presented with such patients. what began as an asymptomatic eruption progressed to more classic signs of the disease, including a positive rocky mountain spotted fever titer. the patient was successfully treated with doxycydine and within a sh ... | 0 | 24062875 |
| reinstatement of dermacentor kamshadalus neumann (acari: ixodidae) as a valid species parasitizing mountain goats and sheep in the united states, canada, and russia. | reexamination of dermacentor albipictus (packard, 1869) holdings stored in the united states national tick collection revealed several collections of a morphologically distinct dermacentor species. comparison of these specimens with other dermacentor taxa showed that they are identical to an old taxon originally described as dermacentor variegatus kamshadalus neumann, 1908. for more than a century, this taxon was known only from the male holotype specimen collected in russia, and the name was co ... | 0 | 23926766 |
| an insight into the microbiome of the amblyomma maculatum (acari: ixodidae). | the aim of this study was to survey the bacterial diversity of amblyomma maculatum koch, 1844, and characterize its infection with rickettsia parkeri. pyrosequencing of the bacterial 16s rrna was used to determine the total bacterial population in a. maculatum. pyrosequencing analysis identified rickettsia in a. maculatum midguts, salivary glands, and saliva, which indicates successful trafficking in the arthropod vector. the identity of rickettsia spp. was determined based on sequencing the ric ... | 0 | 24605461 |
| high prevalence of rickettsia africae variants in amblyomma variegatum ticks from domestic mammals in rural western kenya: implications for human health. | tick-borne spotted fever group (sfg) rickettsioses are emerging human diseases caused by obligate intracellular gram-negative bacteria of the genus rickettsia. despite being important causes of systemic febrile illnesses in travelers returning from sub-saharan africa, little is known about the reservoir hosts of these pathogens. we conducted surveys for rickettsiae in domestic animals and ticks in a rural setting in western kenya. of the 100 serum specimens tested from each species of domestic r ... | 0 | 25325312 |
| update on tick-borne rickettsioses around the world: a geographic approach. | tick-borne rickettsioses are caused by obligate intracellular bacteria belonging to the spotted fever group of the genus rickettsia. these zoonoses are among the oldest known vector-borne diseases. however, in the past 25 years, the scope and importance of the recognized tick-associated rickettsial pathogens have increased dramatically, making this complex of diseases an ideal paradigm for the understanding of emerging and reemerging infections. several species of tick-borne rickettsiae that wer ... | 0 | 24092850 |
| what's left in asymmetry? | left-right patterning is a fascinating problem of morphogenesis, linking evolutionary and cellular signaling mechanisms across many levels of organization. in the past 15 years, enormous progress has been made in elucidating the molecular details of this process in embryos of several model species. while many outside the field seem to believe that the fundamental aspects of this pathway are now solved, workers on asymmetry are faced with considerable uncertainties over the details of specific me ... | 0 | 18488999 |
| findings of scientific misconduct. | 0 | 27737130 | |
| findings of scientific misconduct. | 0 | 12666658 | |
| arthropod-borne disease in canada: a clinician's perspective from the 'cold zone'. | arthropod-borne diseases do not occur commonly in canada. nevertheless, canadians run the risk of contracting certain infections within the country during arthropod season, as well as when travelling abroad. therefore, it is important that clinicians are aware of the possible occurrence of arthropod-borne diseases, and consider them in their differential diagnoses. the present review is divided into two sections: arthropod-borne diseases or disease agents documented in canada, and imported arthr ... | 0 | 20177520 |
| feeding period required by amblyomma aureolatum ticks for transmission of rickettsia rickettsii to vertebrate hosts. | rocky mountain spotted fever is endemic to the são paulo metropolitan area, brazil, where the etiologic agent, rickettsia rickettsii, is transmitted to humans by adult amblyomma aureolatum ticks. we determined the minimal feeding period required by a. aureolatum nymphs and adults to transmit r. rickettsii to guinea pigs. unfed nymphs and unfed adult ticks had to be attached to the host for >10 hours to transmit r. rickettsii. in contrast, fed ticks needed a minimum of 10 minutes of attachment to ... | 0 | 25148391 |
| peripheral neuropathy due to vitamin deficiency, toxins, and medications. | peripheral neuropathies secondary to vitamin deficiencies, medications, or toxins are frequently considered but can be difficult to definitively diagnose. accurate diagnosis is important since these conditions are often treatable and preventable. this article reviews the key features of different types of neuropathies caused by these etiologies and provides a comprehensive list of specific agents that must be kept in mind. | 0 | 25299283 |
| tick-borne lymphadenopathy-like condition in an african woman in kenya. | a 30-year-old african woman in kenya succumbed to severe swollen regional lymph nodes, development of painful boils and ulcer formation and rashes at specific tick-biting sites together with an intermittent fever and headache following repeated tick bites of rhipicephalus pulchellus. she later developed nuchal lymphadenopathy-like condition and an eschar with edematous margins at bitten sites. a sustained high fever and fatigue then followed. she became well after treatment with antibiotics and ... | 0 | 24497868 |
| phylogenetic analysis of myobia musculi (schranck, 1781) by using the 18s small ribosomal subunit sequence. | we used high-fidelity pcr to amplify 2 overlapping regions of the ribosomal gene complex from the rodent fur mite myobia musculi. the amplicons encompassed a large portion of the mite's ribosomal gene complex spanning 3128 nucleotides containing the entire 18s rrna, internal transcribed spacer (its) 1,5.8s rrna, its2, and a portion of the 5'-end of the 28s rrna. m. musculi's 179-nucleotide 5.8s rrna nucleotide sequence was not conserved, so this region was identified by conservation of rrna seco ... | 0 | 22330574 |