An Individual-Based Model for the Dispersal of Ixodes scapularis by Ovenbirds and Wood Thrushes During Fall Migration

Publication date: Available online 5 June 2019Source: Ticks and Tick-borne DiseasesAuthor(s): Benjamin A. Tonelli, Donald C. DearbornAbstractIxodes scapularis is responsible for the transmission of a variety of pathogens in North America, including Borrelia burgdorferi sensu stricto, Anaplasma phagocytophilum and Babesia microti. Songbirds have previously been described as agents of tick dispersal, and a combination of empirical data and modeling efforts have implicated songbirds in the range expansion of I. scapularis northward into Canada during spring bird migration. The role of fall bird migration has received comparatively less attention, particularly at a continental scale. The aim of the current research was to use a novel individual-based modeling approach (IBM) to investigate the role of southward migrating songbirds in the dispersal of I. scapularis within the continental United States. The IBM used in this research explicitly models dispersal by two extensively studied migrating songbird species, wood thrush Hylocichla mustelina and ovenbird Seiurus aurocapillus. Our IBM predicts the annual dispersal of more than four million ticks by H. mustelina and S. aurocapillus, notably into areas as far west as the Dakotas, and as far south as Central Alabama. Predicted dispersal locations include areas where the southern phenotype of I. scapularis dominates, suggestive of a possible mechanism for previously described unidirectional gene flow from north to south. In addition...
Source: Ticks and Tick borne Diseases - Category: Zoology Source Type: research

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In this study, we applied complementary in silico approaches to modeling how Anaplasma phagocytophilum infection modulates tick vector regulome. This proof-of-concept research provided support for the use of network analysis in the study of regulome response to infection, resulting in new information on tick-pathogen interactions and potential targets for developing interventions for the control of tick infestations and pathogen transmission. Deciphering the precise nature of circuits that shape the tick regulome in response to pathogen infection is an area of research that in the future will advance our knowledge of tick-...
Source: Frontiers in Physiology - Category: Physiology Source Type: research
This study provides insight into the microbial diversity of I. scapularis in New York State and Connecticut.
Source: Ticks and Tick borne Diseases - Category: Zoology Source Type: research
Publication date: Available online 27 February 2019Source: Ticks and Tick-borne DiseasesAuthor(s): Ellie L. Milnes, Grace Thornton, Alexandre N. Léveillé, Pauline Delnatte, John R. Barta, Dale A. Smith, Nicole NemethAbstractCervid babesiosis, caused by the protozoan hemoparasite Babesia odocoilei and transmitted by the blacklegged tick Ixodes scapularis, is an emerging disease of Canadian cervids. This pathogen has not yet been described in humans. Data are lacking on the role of migratory birds in the adventitious spread of Ba. odocoilei-infected ticks, as well as on the infection status of I. scapularis in ...
Source: Ticks and Tick borne Diseases - Category: Zoology Source Type: research
In this study, the prevalence of antibodies against two Babesia spp. was investigated in a cohort of patients that were seropositive for Borrelia (B.) burgdorferi sensu lato (s.l.). Data were compared to a control group of healthy individuals. Sera were collected from 283 individuals residing in the southernmost region of Sweden, Skåne County. Almost one third of the sera were from patients with a confirmed seropositive reaction against B. burgdorferi s.l. All sera samples were assessed for IgG antibodies against Babesia (Ba.) microti and Ba. divergens by indirect fluorescent antibody (IFA) assays. Seropositive IgG t...
Source: Ticks and Tick borne Diseases - Category: Zoology Source Type: research
Abstract The incidence of babesiosis, Lyme disease and other tick-borne diseases has increased steadily in Europe and North America during the last five decades. Babesia microti is transmitted by species of Ixodes, the same ticks that transmit the Lyme disease-causing spirochete, Borrelia burgdorferi. B. microti can also be transmitted through transfusion of blood products and is the most common transfusion-transmitted infection in the U.S.A. Ixodes ticks are commonly infected with both B. microti and B. burgdorferi, and are competent vectors for transmitting them together into hosts. Few studies have examined the...
Source: International Journal for Parasitology - Category: Parasitology Authors: Tags: Int J Parasitol Source Type: research
The objectives of this study were to investigate the geographic distribution and magnitude of tick infestations in opportunistically sampled mammalian wildlife and companion animals (i.e., dogs) in southern Ontario and to test these ticks for evidence of zoonotic tick-borne pathogens. Ticks collected from wildlife carcasses, live-trapped wildlife and companion animals (2015-2016), as well as wildlife diagnostic cases (2011-2013), were identified to species and life stage. Ixodes scapularis ticks were tested by real-time PCR for Anaplasma phagocytophilum, Babesia microti, Borrelia miyamotoi and Borrelia burgdorferi sensu st...
Source: Ticks and Tick borne Diseases - Category: Zoology Source Type: research
Publication date: Available online 20 July 2018Source: Ticks and Tick-borne DiseasesAuthor(s): Tammi L. Johnson, Christine B. Graham, Sarah E. Maes, Andrias Hojgaard, Amy Fleshman, Karen A. Boegler, Mark J. Delory, Kimetha S. Slater, Sandor E. Karpathy, Jenna K. Bjork, David F. Neitzel, Elizabeth K. Schiffman, Rebecca J. EisenAbstractIn the north-central United States, the blacklegged tick (Ixodes scapularis) is currently known to vector seven human pathogens. These include five bacteria (Borrelia burgdorferi sensu stricto, Borrelia mayonii, Borrelia miyamotoi, Anaplasma phagocytophilum, Ehrlichia muris eauclairensis), one...
Source: Ticks and Tick borne Diseases - Category: Zoology Source Type: research
ConclusionsNon-specific symptoms after tick bite may be caused by uncommon pathogens or co-infection, therefore it should be considered in differential diagnosis after tick bite.
Source: Advances in Medical Sciences - Category: Biomedical Science Source Type: research
Publication date: Available online 31 January 2018 Source:Ticks and Tick-borne Diseases Author(s): Lars Eisen The blacklegged tick, Ixodes scapularis, is the primary vector to humans in the eastern United States of the deer tick virus lineage of Powassan virus (Powassan virus disease); the protozoan parasite Babesia microti (babesiosis); and multiple bacterial disease agents including Anaplasma phagocytophilum (anaplasmosis), Borrelia burgdorferi and Borrelia mayonii (Lyme disease), Borrelia miyamotoi (relapsing fever-like illness, named Borrelia miyamotoi disease), and Ehrlichia muris eauclairensis (a minor causative age...
Source: Ticks and Tick borne Diseases - Category: Zoology Source Type: research
Authors: Okła H, Sosnowska M, Jasik KP, Słodki J, Wojtyczka RD Abstract Ixodes ricinus and other representatives of the order Ixodida are vectors of typical pathogens: Borrelia burgdorferi sensu lato, Anaplasma phagocytophilium, Babesia spp., a tick-borne encephalitis virus, and other microorganisms which are important from a medical and veterinary point of view. The presented study focuses on the verification of nonspecific bacterial flora of I. ricinus. We analyzed ticks collected in a forest region in Silesia, an industrial district in Poland. Methods of classical microbiology and biochemical assays (API 20 NE...
Source: Polish Journal of Microbiology - Category: Microbiology Tags: Pol J Microbiol Source Type: research
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