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Ixodes ricinus

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https://www.readbyqxmd.com/read/29047399/pathogen-communities-of-songbird-derived-ticks-in-europe-s-low-countries
#1
Dieter Heylen, Manoj Fonville, Arieke Docters van Leeuwen, Arjan Stroo, Martin Duisterwinkel, Sip van Wieren, Maria Diuk-Wasser, Arnout de Bruin, Hein Sprong
BACKGROUND: Birds play a major role in the maintenance of enzootic cycles of pathogens transmitted by ticks. Due to their mobility, they affect the spatial distribution and abundance of both ticks and pathogens. In the present study, we aim to identify members of a pathogen community [Borrelia burgdorferi (s.l.), B. miyamotoi, 'Ca. Neoehrlichia mikurensis', Anaplasma phagocytophilum and Rickettsia helvetica] in songbird-derived ticks from 11 locations in the Netherlands and Belgium (2012-2014)...
October 18, 2017: Parasites & Vectors
https://www.readbyqxmd.com/read/29047217/spotted-fever-group-rickettsiae-associated-with-ixodid-ticks-in-wild-environment-in-southern-italy
#2
Donato Antonio Raele, Domenico Galante, Nicola Pugliese, Giovanna La Salandra, Maria Assunta Cafiero
Ixodidae ticks are vectors and reservoirs of several species of rickettsiae, and tick-borne rickettsioses are reported worldwide. This study was aimed to verify the distribution of spotted fever group rickettsiae associated with ticks in a wild environment, the National Park of Gargano, where there is proximity between wild and domestic animals, and which is within an endemic area for rickettsiosis. Ticks were collected from animals or vegetation, morphologically identified and tested by a PCR targeting the 17kDa gene, and by a loop-mediated isothermal amplification (LAMP) targeting ompB gene...
October 18, 2017: MicrobiologyOpen
https://www.readbyqxmd.com/read/29030314/distribution-of-ixodes-ricinus-ticks-and-prevalence-of-tick-borne-encephalitis-virus-among-questing-ticks-in-the-arctic-circle-region-of-northern-norway
#3
A Soleng, K S Edgar, K M Paulsen, B N Pedersen, Y B Okbaldet, I E B Skjetne, D Gurung, R Vikse, Å K Andreassen
This study investigated the geographical distribution of Ixodes ricinus and prevalence of the tick-borne encephalitis virus (TBEV) in northern Norway. Flagging for questing I. ricinus ticks was performed in areas ranging from Vikna in Nord-Trøndelag County, located 190km south of the Arctic Circle (66.3°N), to Steigen in Nordland County, located 155km north of the Arctic Circle. We found that ticks were abundant in both Vikna (64.5°N) and Brønnøy (65.1°N). Only a few ticks were found at locations ∼66°N, and no ticks were found at several locations up to 67...
October 8, 2017: Ticks and Tick-borne Diseases
https://www.readbyqxmd.com/read/29029144/broad-range-survey-of-vector-borne-pathogens-and-tick-host-identification-of-ixodes-ricinus-from-southern-czech-republic
#4
Vaclav Honig, Heather E Carolan, Zuzana Vavruskova, Christian Massire, Michael R Mosel, Christopher D Crowder, Megan A Rounds, David J Ecker, Daniel Ruzek, Libor Grubhoffer, Benjamin J Luft, Mark W Eshoo
Ixodes ricinus ticks are vectors of numerous human and animal pathogens. They are host generalists able to feed on more than 300 vertebrate species. The prevalence of tick-borne pathogens is influenced by host-vector-pathogen interactions that results in spatial distribution of infection risk. Broad-range PCR and electrospray ionization mass-spectrometry (PCR/ESI-MS) was used to analyze 435 I. ricinus nymphs from four localities in the south of the Czech Republic for the species identification of tick-borne pathogens...
October 3, 2017: FEMS Microbiology Ecology
https://www.readbyqxmd.com/read/29022768/molecular-survey-on-rickettsia-spp-anaplasma-phagocytophilum-borrelia-burgdorferi-sensu-lato-and-babesia-spp-in-ixodes-ricinus-ticks-infesting-dogs-in-central-italy
#5
Giulia Morganti, Stefano Gavaudan, Cristina Canonico, Silvia Ravagnan, Emanuela Olivieri, Manuela Diaferia, Maria Luisa Marenzoni, Maria Teresa Antognoni, Gioia Capelli, Cornelia Silaghi, Fabrizia Veronesi
Dogs are a common feeding hosts for Ixodes ricinus and may act as reservoir hosts for zoonotic tick-borne pathogens (TBPs) and as carriers of infected ticks into human settings. The aim of this work was to evaluate the presence of several selected TBPs of significant public health concern by molecular methods in I. ricinus recovered from dogs living in urban and suburban settings in central Italy. A total of 212 I. ricinus specimens were collected from the coat of domestic dogs. DNA was extracted from each specimen individually and tested for Rickettsia spp...
October 12, 2017: Vector Borne and Zoonotic Diseases
https://www.readbyqxmd.com/read/29017579/surveillance-of-ixodes-ricinus-ticks-acari-ixodidae-in-iceland
#6
Matthias Alfredsson, Erling Olafsson, Matthias Eydal, Ester Rut Unnsteinsdottir, Kayleigh Hansford, William Wint, Neil Alexander, Jolyon M Medlock
BACKGROUND: Ixodes ricinus is a three-host tick, a principal vector of Borrelia burgdorferi (s.l.) and one of the main vectors of tick-borne encephalitis (TBE) virus. Iceland is located in the North Atlantic Ocean with subpolar oceanic climate. During the past 3-4 decades, average temperature has increased, supporting more favourable conditions for ticks. Reports of I. ricinus have increased in recent years. If these ticks were able to establish in a changing climate, Iceland may face new threats posed by tick-borne diseases...
October 10, 2017: Parasites & Vectors
https://www.readbyqxmd.com/read/28975409/diversity-and-prevalence-of-bartonella-species-in-small-mammals-from-slovakia-central-europe
#7
Eva Špitalská, Lenka Minichová, Elena Kocianová, Ľudovít Škultéty, Lenka Mahríková, Zuzana Hamšíková, Mirko Slovák, Mária Kazimírová
Wild-living rodents are important hosts for zoonotic pathogens. Bartonella infections are widespread in rodents; however, in Slovakia, knowledge on the prevalence of these bacteria in small mammals is limited. We investigated the prevalence and diversity of Bartonella species in the spleens of 640 rodents of six species (Apodemus flavicollis, Apodemus sylvaticus, Myodes glareolus, Microtus arvalis, Microtus subterraneus, and Micromys minutus) and in the European mole (Talpa europaea) from three different habitat types in south-western and central Slovakia...
October 3, 2017: Parasitology Research
https://www.readbyqxmd.com/read/28969995/investigation-of-babesia-spp-in-sympatric-populations-of-dermacentor-reticulatus-and-ixodes-ricinus-ticks-in-lithuania-and-latvia
#8
Jana Radzijevskaja, Dalytė Mardosaitė-Busaitienė, Asta Aleksandravičienė, Algimantas Paulauskas
The objectives of the present study were to investigate the presence of the Babesia parasites in Dermacentor reticulatus ticks along its current distribution range in Lithuania and Latvia, and Ixodes ricinus in Lithuania, to characterize the detected Babesia spp. using partial sequencing of 18S rRNR gene, and to determine the prevalence of the Babesia pathogens in ticks from different locations of Lithuania and Latvia. From 2013 to 2015, four D. reticulatus nymphs and 2255 questing adults were collected from 40 locations in Lithuania, and 181 questing adult D...
September 21, 2017: Ticks and Tick-borne Diseases
https://www.readbyqxmd.com/read/28969843/toxic-and-repellent-activity-of-selected-monoterpenoids-thymol-carvacrol-and-linalool-against-the-castor-bean-tick-ixodes-ricinus-acari-ixodidae
#9
Mohaddeseh Abouhosseini Tabari, Mohammad Reza Youssefi, Filippo Maggi, Giovanni Benelli
The castor bean tick, Ixodes ricinus, is a species of medical and veterinary importance. The use of synthetic acaricides for tick control has led to development of resistance, residues in the environment and animal products, and public health concerns. In this regard, plant essential oils and their main constituents represent an appealing alternative strategy to combat ticks. The phenols thymol and carvacrol and the alcohol linalool are monoterpenoids occurring in essential oils of several aromatic and medicinal plants, such as thyme, oregano, savory, lavender and coriander...
October 15, 2017: Veterinary Parasitology
https://www.readbyqxmd.com/read/28950023/assessment-of-maldi-tof-ms-biotyping-for-borrelia-burgdorferi-sl-detection-in-ixodes-ricinus
#10
Pierre H Boyer, Nathalie Boulanger, Amira Nebbak, Elodie Collin, Benoit Jaulhac, Lionel Almeras
Matrix Assisted Laser Desorption/Ionization Time-of-Flight Mass Spectrometry (MALDI-TOF MS) has been demonstrated to be useful for tick identification at the species level. More recently, this tool has been successfully applied for the detection of bacterial pathogens directly in tick vectors. The present work has assessed the detection of Borrelia burgdorferi sensu lato in Ixodes ricinus tick vector by MALDI-TOF MS. To this aim, experimental infection model of I. ricinus ticks by B. afzelii was carried out and specimens collected in the field were also included in the study...
2017: PloS One
https://www.readbyqxmd.com/read/28939383/prevalence-of-borrelia-burgdorferi-and-borrelia-miyamotoi-in-questing-ixodes-ricinus-ticks-from-four-sites-in-the-uk
#11
Scott J Layzell, Daniel Bailey, Mick Peacey, Patricia A Nuttall
Borrelia miyamotoi is a spirochete bacterium related to Borrelia burgdorferi sensu lato, the cause of Lyme borreliosis, and vectored by ticks. In 2014, B. miyamotoi was identified in three questing Ixodes ricinus collected in the UK. We sought to confirm the presence of B. miyamotoi in the UK. Ticks were collected from four locations not previously investigated for B. miyamotoi or B. burgdorferi s.l. and of which two are considered as Lyme borreliosis "hotspots" based on hospital records of the disease. We independently confirm that B...
September 18, 2017: Ticks and Tick-borne Diseases
https://www.readbyqxmd.com/read/28935402/ixodes-inopinatus-occurring-also-outside-the-mediterranean-region
#12
Lidia Chitimia-Dobler, Ramona Rieß, Olaf Kahl, Silke Wölfel, Gerhard Dobler, Santiago Nava, Agustin Estrada-Peña
We report the presence of Ixodes inopinatus and its sympatric occurrence with Ixodes ricinus in southeastern Germany, western Austria, and Romania. The identification of I. inopinatus was based on morphological and molecular 16S rRNA and 12S rRNA gene features. We also report the finding of Rickettsia monacensis and Rickettsia helvetica in I. inopinatus collected from a fox and a sheep in Romania. Although the vector competence of I. inopinatus for these pathogens remains to be proven, there is evidence of transstadial persistence, an important prerequisite for acting as a vector...
September 9, 2017: Ticks and Tick-borne Diseases
https://www.readbyqxmd.com/read/28927432/deer-presence-rather-than-abundance-determines-the-population-density-of-the-sheep-tick-ixodes-ricinus-in-dutch-forests
#13
Tim R Hofmeester, Hein Sprong, Patrick A Jansen, Herbert H T Prins, Sipke E van Wieren
BACKGROUND: Understanding which factors drive population densities of disease vectors is an important step in assessing disease risk. We tested the hypothesis that the density of ticks from the Ixodes ricinus complex, which are important vectors for tick-borne diseases, is determined by the density of deer, as adults of these ticks mainly feed on deer. METHODS: We performed a cross-sectional study to investigate I. ricinus density across 20 forest plots in the Netherlands that ranged widely in deer availability to ticks, and performed a deer-exclosure experiment in four pairs of 1 ha forest plots in a separate site...
September 19, 2017: Parasites & Vectors
https://www.readbyqxmd.com/read/28917304/prevalence-of-ticks-and-tick-borne-pathogens-babesia-and-borrelia-species-in-ticks-infesting-cats-of-great-britain
#14
Saran Davies, Swaid Abdullah, Chris Helps, Séverine Tasker, Hannah Newbury, Richard Wall
In a study of tick and tick-borne pathogen prevalence, between May and October 2016, 278 veterinary practices in Great Britain examined 1855 cats. Six-hundred and one cats were found to have attached ticks. The most frequently recorded tick species was Ixodes ricinus (57.1%), followed by Ixodes hexagonus (41.4%) and Ixodes trianguliceps (1.5%). Male cats, 4-6 years of age living in rural areas were most likely to be carrying a tick; hair length and tick treatment history had no significant association with attachment...
September 15, 2017: Veterinary Parasitology
https://www.readbyqxmd.com/read/28906256/variability-of-species-of-babesia-starcovici-1893-in-three-sympatric-ticks-ixodes-ricinus-dermacentor-reticulatus-and-haemaphysalis-concinna-at-the-edge-of-pannonia-in-the-czech-republic-and-slovakia
#15
Marketa Rybarova, Michaela Honsova, Ivo Papousek, Pavel Siroky
The distribution, variability and host specificity of species of Babesia Starcovici, 1893 were studied in questing ticks collected on the northwestern edge of the Pannonian Basin in the south-easternmost part of the Czech Republic and in western Slovakia. The area is characterised by relatively natural floodplain habitats and the sympatric occurrence of three tick species possessing wide host spectra, namely Ixodes ricinus (Linnaeus), Dermacentor reticulatus (Fabricius) and Haemaphysalis concinna Koch. Analysis was carried out on 1,408 I...
August 23, 2017: Folia Parasitologica
https://www.readbyqxmd.com/read/28883464/characterizing-the-virome-of-ixodes-ricinus-ticks-from-northern-europe
#16
John H-O Pettersson, Mang Shi, Jon Bohlin, Vegard Eldholm, Ola B Brynildsrud, Katrine Mørk Paulsen, Åshild Andreassen, Edward C Holmes
RNA viruses are abundant infectious agents and present in all domains of life. Arthropods, including ticks, are well known as vectors of many viruses of concern for human and animal health. Despite their obvious importance, the extent and structure of viral diversity in ticks is still poorly understood, particularly in Europe. Using a bulk RNA-sequencing approach that captures the complete transcriptome, we analysed the virome of the most common tick in Europe - Ixodes ricinus. In total, RNA sequencing was performed on six libraries consisting of 33 I...
September 7, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28874197/environmental-drivers-of-ixodes-ricinus-abundance-in-forest-fragments-of-rural-european-landscapes
#17
Steffen Ehrmann, Jaan Liira, Stefanie Gärtner, Karin Hansen, Jörg Brunet, Sara A O Cousins, Marc Deconchat, Guillaume Decocq, Pieter De Frenne, Pallieter De Smedt, Martin Diekmann, Emilie Gallet-Moron, Annette Kolb, Jonathan Lenoir, Jessica Lindgren, Tobias Naaf, Taavi Paal, Alicia Valdés, Kris Verheyen, Monika Wulf, Michael Scherer-Lorenzen
BACKGROUND: The castor bean tick (Ixodes ricinus) transmits infectious diseases such as Lyme borreliosis, which constitutes an important ecosystem disservice. Despite many local studies, a comprehensive understanding of the key drivers of tick abundance at the continental scale is still lacking. We analyze a large set of environmental factors as potential drivers of I. ricinus abundance. Our multi-scale study was carried out in deciduous forest fragments dispersed within two contrasting rural landscapes of eight regions, along a macroclimatic gradient stretching from southern France to central Sweden and Estonia...
September 6, 2017: BMC Ecology
https://www.readbyqxmd.com/read/28869190/year-to-year-variation-in-the-density-of-ixodes-ricinus-ticks-and-the-prevalence-of-the-rodent-associated-human-pathogens-borrelia-afzelii-and-b-miyamotoi-in-different-forest-types
#18
Sanne C Ruyts, Wesley Tack, Evy Ampoorter, Elena C Coipan, Erik Matthysen, Dieter Heylen, Hein Sprong, Kris Verheyen
The human pathogens Borrelia afzelii, which causes Lyme borreliosis and B. miyamotoi, which causes relapsing fever, both circulate between Ixodes ricinus ticks and rodents. The spatiotemporal dynamics in the prevalence of these pathogens have not yet been fully elucidated, but probably depend on the spatiotemporal population dynamics of small rodents. We aimed to evaluate the effect of different forest types on the density of infected nymphs in different years and to obtain more knowledge about the spatial and temporal patterns of ticks and tick-borne pathogens...
August 26, 2017: Ticks and Tick-borne Diseases
https://www.readbyqxmd.com/read/28864886/essential-oils-of-aromatic-egyptian-plants-repel-nymphs-of-the-tick-ixodes-ricinus-acari-ixodidae
#19
Hesham R El-Seedi, Muhammad Azeem, Nasr S Khalil, Hanem H Sakr, Shaden A M Khalifa, Khalijah Awang, Aamer Saeed, Mohamed A Farag, Mohamed F AlAjmi, Katinka Pålsson, Anna-Karin Borg-Karlson
Due to the role of Ixodes ricinus (L.) (Acari: Ixodidae) in the transmission of many serious pathogens, personal protection against bites of this tick is essential. In the present study the essential oils from 11 aromatic Egyptian plants were isolated and their repellent activity against I. ricinus nymphs was evaluated Three oils (i.e. Conyza dioscoridis L., Artemisia herba-alba Asso and Calendula officinalis L.) elicited high repellent activity in vitro of 94, 84.2 and 82%, respectively. The most active essential oil (C...
September 1, 2017: Experimental & Applied Acarology
https://www.readbyqxmd.com/read/28864829/physiologic-and-genetic-factors-influencing-the-zoonotic-cycle-of-borrelia-burgdorferi
#20
Philip E Stewart, Patricia A Rosa
Borrelia burgdorferi is a symbiont of ticks of the Ixodes ricinus complex. These ticks serve as vectors to disseminate the spirochete to a variety of susceptible vertebrate hosts, which, in turn, act as reservoirs for naïve ticks to become infected, perpetuating the infectious life cycle of B. burgdorferi. The pivotal role of ticks in this life cycle and tick-spirochete interactions are the focus of this chapter. Here, we describe the challenging physiological environment that spirochetes encounter within Ixodes ticks, and the genetic factors that B...
September 2, 2017: Current Topics in Microbiology and Immunology
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