| species distribution models and ecological suitability analysis for potential tick vectors of lyme disease in mexico. | species distribution models were constructed for ten ixodes species and amblyomma cajennense for a region including mexico and texas. the model was based on a maximum entropy algorithm that used environmental layers to predict the relative probability of presence for each taxon. for mexico, species geographic ranges were predicted by restricting the models to cells which have a higher probability than the lowest probability of the cells in which a presence record was located. there was spatial n ... | 2012 | 22518171 |
| genetic variation in the mitochondrial 16s ribosomal rna gene of ixodes scapularis (acari: ixodidae). | ixodes scapularis is a vector of several human pathogens in the united states, and there is geographical variation in the relative number of persons infected with these pathogens. geographically isolated populations of i. scapularis have established or are in the process of establishing in southern canada. knowledge of the genetic variation within and among these populations may provide insight into their geographical origins in the united states and the potential risk of exposure of canadians t ... | 2014 | 25430547 |
| studies on two populations of ixodes kingi bishopp (ixodidae). | | 1971 | 5557896 |
| cytogenetics of ticks (acari: ixodoidea). 13. chromosomes of ixodes kingi with comparative notes on races east and west of the continental divide. | | 1974 | 4821131 |
| comparison of the dna sequences and secondary structure of the mitochondrial 16s rrna gene of ixodes kingi, ixodes sculptus and ixodes angustus. | the dna sequences and predicted secondary structure of domains iv and v of the mitochondrial (mt) 16s rrna gene were compared for three species of ixodes: ixodes kingi, ixodes sculptus and ixodes angustus. each species had a unique set of dna sequences for the 16s gene. many of the differences in dna sequence within and among species occurred in a "hypervariable" region of domain v, and either represented partial or full compensatory base pair changes that maintained the helices within the secon ... | 2014 | 24556375 |
| detection of a novel rickettsia (alphaproteobacteria: rickettsiales) in rotund ticks (ixodes kingi) from saskatchewan, canada. | a novel rickettsia was detected in the rotund tick, ixodes kingi bishopp, 1911, based on comparative dna sequence analyses of 4 genes; the rickettsial-specific 17-kda antigen gene, citrate synthase gene (glta), the outer surface membrane protein a gene (ompa), and the 16s rrna gene. the rickettsiae in i. kingi differed in nucleotide sequence from those of other rickettsia species by 5.8-18.3% for the 17-kda gene, 0.9-13.9% for glta, 5.5-22.8% for ompa, and 0.9-1.6% for the 16s rrna gene. phyloge ... | 2013 | 23419865 |
| mutation scanning-based identification of larval and nymphal ticks (acari: ixodidae) from richardson's ground squirrels (spermophilus richardsonii). | the objective of this study was to identify the tick species parasitizing richardson's ground squirrels (spermophilus richardsonii) in southern saskatchewan (canada). morphological examination of the adult ticks revealed the presence of three tick species, ixodes sculptus, ixodes kingi and dermacentor andersoni. however, given the difficulties in identifying some of the larval and nymphal (immature) ticks using this approach, pcr-based single-strand conformation polymorphism (sscp) and dna seque ... | 2014 | 24075866 |
| people, pets, and parasites: one health surveillance in southeastern saskatchewan. | residents of remote and indigenous communities might experience higher exposure to some zoonotic parasites than the general north american population. human sero-surveillance conducted in two saulteaux communities found 113 volunteers exposed as follows: trichinella (2.7%), toxocara canis (4.4%), echinococcus (4.4%), and toxoplasma gondii (1.8%). in dogs, 41% of 51 fecal samples were positive for at least one intestinal parasite, 3% of 77 were sero-positive for borrelia burgdorferi, and 21% of 7 ... | 2014 | 24639298 |
| a novel rickettsia species detected in vole ticks (ixodes angustus) from western canada. | the genomic dna of ixodid ticks from western canada was tested by pcr for the presence of rickettsia. no rickettsiae were detected in ixodes sculptus, whereas 18% of the i. angustus and 42% of the dermacentor andersoni organisms examined were pcr positive for rickettsia. the rickettsiae from each tick species were characterized genetically using multiple genes. rickettsiae within the d. andersoni organisms had sequences at four genes that matched those of r. peacockii. in contrast, the rickettsi ... | 2013 | 24077705 |
| larval keys to the genera of ixodidae (acari) and species of ixodes (latreille) ticks established in california. | in california, hard (ixodidae) ticks transmit at least 8 zoonotic disease agents (1 virus, 6 bacteria, 1 protozoan) to humans or other animals. the correct taxonomic identification of all 3 parasitic stages (larvae, nymphs, adults) of ticks is integral to understanding host-tick associations and disease dynamics, but immature ticks, especially the larvae, can be difficult to identify. here, we present larval keys to the 4 genera of ixodidae (dermacentorkoch, 1844; haemaphysaliskoch, 1844; ixodes ... | 2008 | 20027236 |
| host usage and seasonal activity patterns of ixodes kingi and i. sculptus (acari: ixodidae) nymphs in a colorado prairie landscape, with a summary of published north american host records for all life stages. | we examined host usage and seasonal activity patterns of the nymphal stage of the ticks ixodes kingi and i. sculptus within a prairie rodent community in north-central colorado. ixodes kingi was commonly encountered on both northern grasshopper mice (onychomys leucogaster) and thirteen-lined ground squirrels (spermophilus tridecemlineatus), whereas i. sculptus frequently infested s. tridecemlineatus but was absent from o. leucogaster. low numbers of ticks of both species were collected from deer ... | 2006 | 16859106 |
| molecular genetic key for the identification of 17 ixodes species of the united states (acari:ixodidae): a methods model. | a taxonomic key, based on restriction enzyme analysis of the second internal-transcribed spacer (its-2) in the nuclear ribosomal dna gene, was developed for identification of 17 ixodes tick species in the united states. this key includes: ixodes affinis neumann, ixodes angustus neumann, ixodes baergi cooley and kohls, ixodes brunneus koch, ixodes cookei packard, ixodes dentatus marx, ixodes jellisoni cooley and kohls, ixodes kingi bishopp, ixodes minor neumann, ixodes muris bishopp and smith, ix ... | 1999 | 10461941 |