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Ixodes ricinus

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https://www.readbyqxmd.com/read/27923669/emergence-of-tick-borne-pathogens-borrelia-burgdorferi-sensu-lato-anaplasma-phagocytophilum-ricketsia-raoultii-and-babesia-microti-in-the-kyiv-urban-parks-ukraine
#1
Yuliya M Didyk, Lucia Blaňárová, Svyatoslav Pogrebnyak, Igor Akimov, Branislav Peťko, Bronislava Víchová
To date, only limited data about the presence of ticks and circulation of tick-borne pathogens in urban parks of Kyiv in northern Ukraine are available. In total, 767 ticks (696 Ixodes ricinus and 69 Dermacentor reticulatus) collected in seven urban parks and one suburban oak wood park in Kyiv were individually analyzed by the PCR assays. Tick-borne pathogens, namely spirochetes from Borrelia burgdorferi sensu lato complex, Anaplasma phagocytophilum, and Babesia microti, were detected in 11.1% of tested I. ricinus ticks...
October 11, 2016: Ticks and Tick-borne Diseases
https://www.readbyqxmd.com/read/27922802/urban-breeding-corvids-as-disseminators-of-ticks-and-emerging-tick-borne-pathogens
#2
Attila D Sándor, Zsuzsa Kalmár, Ioana Matei, Angela Monica Ionică, Ioan-Daniel Mărcuţan
Crows (Corvidae) are common city dwellers worldwide and are increasingly important subjects of epidemiology studies. Although their importance as hosts and transmitters of a number of zoonotic parasites and pathogens is well known, there are no studies on their importance as tick hosts. After mosquitoes, ticks are the most important vectors of zoonotic pathogens, especially for those causing emerging zoonotic diseases. Pathogenic bacteria, especially Borrelia spp., Rickettsia spp., and Anaplasma spp., vectored by ticks, are the cause for most vector-borne diseases in Europe...
December 6, 2016: Vector Borne and Zoonotic Diseases
https://www.readbyqxmd.com/read/27907193/phylogenetic-lineages-and-postglacial-dispersal-dynamics-characterize-the-genetic-structure-of-the-tick-ixodes-ricinus-in-northwest-europe
#3
Knut H Røed, Kjersti S Kvie, Gunnar Hasle, Lucy Gilbert, Hans Petter Leinaas
Dispersal and gene flow are important mechanisms affecting the dynamics of vectors and their pathogens. Here, patterns of genetic diversity were analyzed in many North European populations of the tick, Ixodes ricinus. Population sites were selected within and between areas separated by geographical barriers in order to evaluate the importance of tick transportation by birds in producing genetic connectivity across open sea and mountain ranges. The phylogenetic analyses of the mitochondrial control region and the cytochrome b gene revealed two distinct clades with supported sub-clades, with three genetic lineages: GB and WNo associated with Great Britain and western Norway respectively, and Eu with a wider distribution across continental Europe in agreement with much lower efficiency of tick dispersal by birds than by large mammals...
2016: PloS One
https://www.readbyqxmd.com/read/27903055/local-landscape-effects-on-population-dynamics-of-ixodes-ricinus
#4
Naveed Asghar, Mona Petersson, Magnus Johansson, Patrik Dinnetz
Ixodes ricinus, a common tick in Europe, transmits severe tickborne pathogens (TBPs). In Sweden, both prevalence and incidence of tick-borne infections have increased during the last few decades, and a majority of the cases is reported from the area around Stockholm. Among ticks, transmission of TBPs involves co-feeding of susceptible larvae or nymphs with infected ticks on the same host. Seasonal synchrony of immature stages and total tick abundance are important factors for the probability of horizontal transmission of TBPs...
November 21, 2016: Geospatial Health
https://www.readbyqxmd.com/read/27894863/molecular-evidence-for-toxoplasma-gondii-in-feeding-and-questing-ixodes-ricinus-ticks
#5
Małgorzata Adamska, Bogumiła Skotarczak
The aim of the present study was to detect Toxoplasma gondii in ticks collected from ponies and field vegetation and to determine the role of Shetland ponies as a potential reservoir host for T. gondii. A total of 1737 feeding Ixodes ricinus collected from 49 horses and 371 questing ticks were tested by PCR and sequencing for the presence and genotyping of T. gondii. All ticks were examined in a previous study to detect and identify pathogenic bacterial species. The aim of this study was also to detect co-infection of ticks with these bacteria and T...
November 21, 2016: Ticks and Tick-borne Diseases
https://www.readbyqxmd.com/read/27894847/pcr-screening-of-tick-borne-agents-in-sensitive-conservation-areas-southeast-portugal
#6
Maria Margarida Santos-Silva, Pedro Melo, Nuno Santos, Sandra Antunes, Luís Raposo Duarte, Joana Ferrolho, Natacha Milhano, Patrícia Tavares Santos, Ana Domingos, Ana Sofia Santos
The Southeast region of Portugal, particularly the Guadiana valley, is currently the reintroduction territory of Lynx pardinus (Iberian lynx), one of the most endangered felids in the world that is only found in the Iberian Peninsula. Over the last century, populations have declined, placing L. pardinus at extremely high risk of extinction in the wild and relying on reintroduction projects. Among the aspects taken into account in the establishment of new populations is the sanitary status of the selected habitats, especially concerning infectious diseases, including tick-borne pathogens (TBPs)...
November 25, 2016: Molecular and Cellular Probes
https://www.readbyqxmd.com/read/27876087/heterogeneity-in-the-abundance-and-distribution-of-ixodes-ricinus-and-borrelia-burgdorferi-sensu-lato-in-scotland-implications-for-risk-prediction
#7
Caroline Millins, Lucy Gilbert, Paul Johnson, Marianne James, Elizabeth Kilbride, Richard Birtles, Roman Biek
BACKGROUND: Cases of Lyme borreliosis, a vector-borne zoonosis caused by bacteria in the Borrelia burgdorferi (sensu lato) species group, have increased in recent years in Europe. Knowledge of environmental factors associated with abundance of the tick vector Ixodes ricinus and the pathogen B. burgdorferi (s.l.) is of interest to understand responses to environmental changes, predict variation in risk and to inform management interventions. METHODS: Nineteen woodland sites across Scotland were surveyed in 2012 for B...
November 22, 2016: Parasites & Vectors
https://www.readbyqxmd.com/read/27866446/clinical-and-serological-one-year-follow-up-of-patients-after-the-bite-of-ixodes-ricinus-ticks-infected-with-borrelia-burgdorferi-sensu-lato
#8
Violeta T Briciu, Mirela Flonta, Doina F Ţăţulescu, Fabian Meyer, Daniela Sebah, Dumitru Cârstina, Andrei D Mihalca, Călin M Gherman, Cecilia Hizo-Teufel, Ingrid Huber, Volker Fingerle, Mihaela Lupșe
BACKGROUND: The risk of developing Lyme borreliosis (LB) after the bite of a Borrelia (B.) burgdorferi sensu lato (s.l.) infected tick in Romania is unknown. METHODS: The present prospective study, performed in 2010-2011 in a hospital in Romania, has followed-up clinical and serological outcome of patients that presented with B. burgdorferi positive Ixodes (I.) ricinus bite. A second group of patients, including age, sex and residence-matched individuals bitten by B...
November 21, 2016: Infectious Diseases
https://www.readbyqxmd.com/read/27860008/genetic-diversity-of-ixodes-ricinus-ixodida-ixodidae-ticks-in-sympatric-and-allopatric-zones-in-baltic-countries
#9
A Paulauskas, E Galdikaitė-Brazienė, J Radzijevskaja, A Aleksandravičienė, M Galdikas
Ixodes ricinus (Linnaeus 1758) and Ixodes persulcatus (Schulze 1930) ticks are involved in the transmission of a wide variety of pathogens with considerable impact on human and animal health. The co-distribution zone of these two tick species is situated in the Baltic countries, which provides a special setting for the population studies. In the present study, genetic variability of I. ricinus ticks collected in allopatric and sympatric locations in the Baltic countries has been investigated using a sequence analysis of the mitochondrial DNA control region, 16S rRNA and cytb genes...
December 2016: Journal of Vector Ecology: Journal of the Society for Vector Ecology
https://www.readbyqxmd.com/read/27856176/identification-of-i-ricinus-i-persulcatus-and-i-trianguliceps-species-by-multiplex-pcr
#10
Kairi Värv, Anna Ivanova, Julia Geller, Jaanus Remm, Kertu Jaik, Nina Tikunova, Vera Rar, Åke Lundkvist, Irina Golovljova
Correct identification of tick species is an essential requirement for any scientific study engaged in tick-associated research. However, morphological identification can lead to misinterpretations, especially when dealing with vector-host research and sub-adult, engorged or damaged specimens. To overcome this limitation, we developed a novel assay to discriminate between Ixodes ricinus, I. persulcatus and I. trianguliceps species collected from rodents or vegetation, using the second internal transcribed spacer (ITS2) as a genetic marker...
November 10, 2016: Ticks and Tick-borne Diseases
https://www.readbyqxmd.com/read/27846275/prevalence-of-rickettsia-spp-in-ticks-and-serological-and-clinical-outcomes-in-tick-bitten-individuals-in-sweden-and-on-the-%C3%A3-land-islands
#11
Anders Lindblom, Katarina Wallménius, Johanna Sjöwall, Linda Fryland, Peter Wilhelmsson, Per-Eric Lindgren, Pia Forsberg, Kenneth Nilsson
Tick-transmitted diseases are an emerging health problem, and the hard tick Ixodes ricinus is the main vector for Borrelia spp., tick-borne encephalitis virus and most of the spotted fever Rickettsiae in Europe. The aim of the present study was to examine the incidence of rickettsial infection in the southernmost and south central parts of Sweden and the Åland Islands in Finland, the risk of infection in humans and its correlation with a bite of a Rickettsia-infected tick, the self-reported symptoms of rickettsial disease, and the prevalence of co-infection between Rickettsia spp...
2016: PloS One
https://www.readbyqxmd.com/read/27842608/ticks-acari-ixodidae-infesting-cattle-and-some-other-domestic-and-wild-hosts-on-the-french-mediterranean-island-of-corsica
#12
Sébastien Grech-Angelini, Frédéric Stachurski, Renaud Lancelot, Jérôme Boissier, Jean-François Allienne, Sylvain Marco, Oscar Maestrini, Gerrit Uilenberg
BACKGROUND: Corsica is a mountainous French island in the north-western Mediterranean presenting a large diversity of natural environments where many interactions between domestic animals and wild fauna occur. Despite a favourable context for ticks and tick-borne diseases (TBDs), the tick fauna of Corsica has not systematically been investigated. METHODS: For one year (May 2014-May 2015), a survey of ticks infesting cattle was performed in the three Corsican cattle slaughterhouses...
November 15, 2016: Parasites & Vectors
https://www.readbyqxmd.com/read/27836839/multi-strain-infections-of-the-lyme-borreliosis-pathogen-in-the-tick-vector
#13
Jonas Durand, Coralie Herrmann, Dolores Genné, Anouk Sarr, Lise Gern, Maarten J Voordouw
: Mixed or multiple-strain infections are common in vector-borne diseases and have important implications for the epidemiology of these pathogens. Previous studies have mainly focused on interactions between pathogen strains in the vertebrate host, but little is known about what happens in the arthropod vector. Borrelia afzelii and B. garinii are two species of spirochete bacteria that cause Lyme borreliosis in Europe and that share a common tick vector Ixodes ricinus Each of these two tick-borne pathogens consists of multiple strains that are often differentiated using the highly polymorphic ospC gene...
November 11, 2016: Applied and Environmental Microbiology
https://www.readbyqxmd.com/read/27824139/rna-seq-analyses-of-the-midgut-from-blood-and-serum-fed-ixodes-ricinus-ticks
#14
Jan Perner, Jan Provazník, Jana Schrenková, Veronika Urbanová, José M C Ribeiro, Petr Kopáček
Adult females of the genus Ixodes imbibe blood meals exceeding about 100 times their own weight within 7‒9 days. During this period, ticks internalise components of host blood by endocytic digest cells that line the tick midgut epithelium. Using RNA-seq, we aimed to characterise the midgut transcriptome composition in adult Ixodes ricinus females during early and late phase of engorgement. To address specific adaptations to the haemoglobin-rich diet, we compared the midgut transcriptomes of genetically homogenous female siblings fed either bovine blood or haemoglobin-depleted serum...
November 8, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27822206/antiplasmodial-activity-is-an-ancient-and-conserved-feature-of-tick-defensins
#15
Alejandro Cabezas-Cruz, Miray Tonk, Anne Bouchut, Christine Pierrot, Raymond J Pierce, Michalis Kotsyfakis, Mohammad Rahnamaeian, Andreas Vilcinskas, Jamal Khalife, James J Valdés
Ancestral sequence reconstruction has been widely used to test evolution-based hypotheses. The genome of the European tick vector, Ixodes ricinus, encodes for defensin peptides with diverse antimicrobial activities against distantly related pathogens. These pathogens include fungi, Gram-negative, and Gram-positive bacteria, i.e., a wide antimicrobial spectrum. Ticks do not transmit these pathogens, suggesting that these defensins may act against a wide range of microbes encountered by ticks during blood feeding or off-host periods...
2016: Frontiers in Microbiology
https://www.readbyqxmd.com/read/27815655/molecular-analysis-of-rhipicephalus-sanguineus-acari-ixodidae-an-incriminated-vector-tick-for-babesia-vogeli-in-taiwan
#16
Li-Lian Chao, Chien-Ming Shih
The genetic identity of Rhipicephalus sanguineus tick was determined for the first time in Taiwan. The phylogenetic relationships were analyzed by comparing the sequences of mitochondrial 16S ribosomal DNA gene obtained from 32 strains of ticks representing six species of Rhipicephalus, two species of Dermacentor and two outgroup species (Haemaphysalis inermis and Ixodes ricinus). Seven major clades can be easily distinguished by neighbour-joining analysis and were congruent by maximum-parsimony method. All R...
November 4, 2016: Experimental & Applied Acarology
https://www.readbyqxmd.com/read/27812829/anaplasma-phagocytophilum-in-questing-ixodes-ricinus-ticks-in-southwestern-finland
#17
Jani J Sormunen, Ritva Penttinen, Tero Klemola, Eero J Vesterinen, Jari Hänninen
Anaplasma phagocytophilum is the causative agent of an emerging tick-borne disease, human granulocytic anaplasmosis. While the bacterium has been reported from questing ticks in neighboring Sweden, Norway and Russia, the few surveys regarding questing ticks in Finland have thus far been negative. In the current study, the prevalence of A. phagocytophilum in Ixodes ricinus populations was evaluated in several study localities around southwestern Finland during 2013-2014. Some of these populations were previously screened and found negative for A...
November 3, 2016: Experimental & Applied Acarology
https://www.readbyqxmd.com/read/27796564/parasites-and-vector-borne-diseases-in-client-owned-dogs-in-albania-infestation-with-arthropod-ectoparasites
#18
Enstela Shukullari, Dhimitër Rapti, Martin Visser, Kurt Pfister, Steffen Rehbein
To establish the diversity and seasonality of ectoparasite infestation in client-owned dogs in Albania, 602 dogs visiting four small animal clinics in Tirana from March 2010 to April 2011 inclusive were examined for ectoparasites by full body search and total body comb. In addition, ear swab specimens collected from all dogs and scrapings taken from skin lesions suspicious of mite infestation were examined for parasitic mites. Overall, 93 dogs (15.4 %, 95%CI 12.6-18.6) were demonstrated to be infested, and nine species of ectoparasites were identified: Ixodes ricinus, 0...
October 29, 2016: Parasitology Research
https://www.readbyqxmd.com/read/27795275/complete-genome-sequence-of-a-low-virulence-tick-borne-encephalitis-virus-strain
#19
G Dobler, M Bestehorn, M Antwerpen, A Överby-Wernstedt
We report here the complete genome sequence (GenBank accession no. KX268728) of tick-borne encephalitis strain HB171/11, isolated from an Ixodes ricinus tick from a natural focus where human neurological disease is rare. The strain shows unique characteristics in neuroinvasiveness and neurovirulence.
October 20, 2016: Genome Announcements
https://www.readbyqxmd.com/read/27788060/detection-and-characterization-of-the-emerging-relapsing-fever-pathogen-borrelia-miyamotoi-from-the-ixodes-ricinus-tick-in-the-rural-trakya-thrace-region-of-northwestern-turkey
#20
Keiko Sakakibara, Ece Şen, Kozue Sato, Hiroki Kawabata, Norio Ohashi, Toshiyuki Masuzawa
The hard tick-borne relapsing fever agent, Borrelia miyamotoi infection in Ixodes ricinus ticks sampled from Istanbul and the countryside of Kirklareli in northwestern Turkey, was examined by TaqMan-PCR targeting 16S rDNA, nested PCR targeting 16S rDNA, the flagellin gene (flaB), and the 16S and 23S rDNA intergenic spacer (IGS), and sequencing analyses of these amplicons. B. miyamotoi was detected in 1 out of 248 I. ricinus ticks (infection rate 0.4%). The tick infected with B. miyamotoi was collected in Longos, Kirklareli province on the European side of Turkey near the Bulgarian border...
December 2016: Vector Borne and Zoonotic Diseases
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