Abstract:
:Previous studies revealed that the Pacific Coast tick (Dermacentor occidentalis) is infected occasionally with the agents of Lyme disease (Borrelia burgdorferi) or human granulocytic anaplasmosis (Anaplasma phagocytophilum) and that it is an inefficient experimental vector of B. burgdorferi. The relationship of the pajahuello tick (Ornithodoros coriaceus) to each of these bacterial zoonotic agents has not been reported. The primary bridging vector of both bacterial zoonotic agents to humans is the western black-legged tick (Ixodes pacificus). Because of the spatial and temporal overlap of D. occidentalis and O. coriaceus populations with those of I. pacificus in natural foci of B. burgdorferi and A. phagocytophilum in northwestern California, we conducted field and laboratory studies to determine if the Pacific Coast tick or the pajahuello tick potentially may serve as secondary vectors of either bacterium. Our findings reconfirmed that wild-caught D. occidentalis ticks are infected infrequently with B. burgdorferi or A. phagocytophilum, but some adult ticks from dense woodlands or chaparral were found to contain 2 important veterinary pathogens for the first time (Anaplasma bovis, A. ovis). The high prevalence of A. bovis infection (4.3%, n=185 ticks) within chaparral-derived ticks suggests that D. occidentalis could be an efficient vector of this rickettsia. Experimental attempts to transmit borreliae or Anaplasma spp. that may have been present in >100 wild-caught D. occidentalis adults to naïve rabbits were unsuccessful. Anaplasma spp. were not detected in O. coriaceus, but one (4.3%) of 23 nymphs was infected with B. bissettii. This finding and an antecedent report of a B. burgdorferi-like spirochete from the same tick species demonstrate that O. coriaceus sometimes acquires and transstadially passes Lyme disease group spirochetes. I. pacificus nymphs inhabiting a woodland nidus of B. burgdorferi and A. phagocytophilum had a 5-fold higher prevalence of borreliae than adult ticks from the same generational cohort. In contrast to the results of preceding studies carried out at the same site, none of the nymphal or adult ticks was PCR-positive for A. phagocytophilum. This suggests that the distribution of this rickettsia is highly focal or variable from year-to-year within this particular woodland.
journal_name
Ticks Tick Borne Disjournal_title
Ticks and tick-borne diseasesauthors
Lane RS,Mun J,Peribáñez MA,Fedorova Ndoi
10.1016/j.ttbdis.2010.09.004subject
Has Abstractpub_date
2010-12-01 00:00:00pages
159-67issue
4eissn
1877-959Xissn
1877-9603pii
S1877-959X(10)00073-7journal_volume
1pub_type
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journal_title:Ticks and tick-borne diseases
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journal_title:Ticks and tick-borne diseases
pub_type: 杂志文章
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journal_title:Ticks and tick-borne diseases
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journal_title:Ticks and tick-borne diseases
pub_type: 杂志文章
doi:10.1016/j.ttbdis.2016.11.002
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journal_title:Ticks and tick-borne diseases
pub_type: 杂志文章
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journal_title:Ticks and tick-borne diseases
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journal_title:Ticks and tick-borne diseases
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更新日期:2014-06-01 00:00:00
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journal_title:Ticks and tick-borne diseases
pub_type: 杂志文章
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journal_title:Ticks and tick-borne diseases
pub_type: 杂志文章
doi:10.1016/j.ttbdis.2018.11.010
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journal_title:Ticks and tick-borne diseases
pub_type: 杂志文章
doi:10.1016/j.ttbdis.2019.03.016
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journal_title:Ticks and tick-borne diseases
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journal_title:Ticks and tick-borne diseases
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journal_title:Ticks and tick-borne diseases
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journal_title:Ticks and tick-borne diseases
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journal_title:Ticks and tick-borne diseases
pub_type: 杂志文章
doi:10.1016/j.ttbdis.2018.09.003
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journal_title:Ticks and tick-borne diseases
pub_type: 杂志文章
doi:10.1016/j.ttbdis.2017.04.001
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abstract::Due to the ongoing expansion of Ixodes scapularis (blacklegged tick) throughout the northeastern and midwestern United States, there is need to identify the role wildlife hosts play in the establishment and maintenance of tick populations. To quantify and synthesize the patterns of I. scapularis and Borrelia burgdorfe...
journal_title:Ticks and tick-borne diseases
pub_type: 杂志文章,meta分析,评审
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journal_title:Ticks and tick-borne diseases
pub_type: 杂志文章
doi:10.1016/j.ttbdis.2016.04.003
更新日期:2016-07-01 00:00:00
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journal_title:Ticks and tick-borne diseases
pub_type: 杂志文章
doi:10.1016/j.ttbdis.2015.10.002
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abstract::Kyasanur Forest disease virus (KFDV) and Alkhurma hemorrhagic fever virus (AHFV) are enveloped, positive-stranded RNA viruses of clinical importance with complex enzootic life cycles involving hematophagous ticks which feed on small and large mammals. Humans and monkeys are dead-end hosts for these viruses. Recent tre...
journal_title:Ticks and tick-borne diseases
pub_type: 杂志文章
doi:10.1016/j.ttbdis.2020.101381
更新日期:2020-05-01 00:00:00
abstract::Amblyomma americanum is the most commonly encountered tick species in southeastern Virginia, representing approximately 95% of the human-biting tick population in this area. Here we investigated the prevalence of Ehrlichia chaffeensis and Ehrlichia ewingii in questing Amblyomma americanum and Dermacentor variabilis ti...
journal_title:Ticks and tick-borne diseases
pub_type: 杂志文章
doi:10.1016/j.ttbdis.2014.07.023
更新日期:2014-10-01 00:00:00
abstract::This study is the first report about the prevalence of tick-borne pathogens, as well as their (co-)infection rates, in the museum-archived I. ricinus female ticks collected in Moldova in 1960. A total of 16.7% (21/126) ticks was mono-infected. Borrelia burgdorferi sensu stricto was revealed as the most abundant specie...
journal_title:Ticks and tick-borne diseases
pub_type: 杂志文章
doi:10.1016/j.ttbdis.2012.12.004
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