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Ixodes ricinus

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https://www.readbyqxmd.com/read/28395756/speed-of-kill-of-a-new-spot-on-formulation-of-selamectin-plus-sarolaner-for-cats-against-induced-infestations-with-ixodes-ricinus
#1
Csilla Becskei, Dan Lin, Douglas Rugg, Thomas Geurden
The speed of kill of a new spot-on formulation containing selamectin plus sarolaner (Stronghold(®)Plus, Zoetis) for cats was evaluated against Ixodes ricinus ticks in a placebo-controlled, blinded study. Sixteen (16) cats were blocked by pre-treatment tick counts and randomly allocated to the placebo-treated group or the selamectin/sarolaner-treated group. Cats either received a single topical treatment at the minimum dose of 6.0mg selamectin and 1.0mg sarolaner per kg bodyweight or a placebo formulation on Day 0...
April 2017: Veterinary Parasitology
https://www.readbyqxmd.com/read/28395754/efficacy-of-a-new-spot-on-formulation-of-selamectin-plus-sarolaner-against-four-common-tick-species-infesting-cats-in-europe
#2
Thomas Geurden, Csilla Becskei, Adriano F Vatta, Nathalie Slootmans, Marcela von Reitzenstein, Vickie L King, Dan Lin, Douglas Rugg
A single application of a new spot-on formulation of selamectin plus sarolaner (Stronghold(®)Plus, Zoetis) was evaluated for efficacy against the most common tick species infesting cats in Europe. In each of the seven laboratory studies, 16 adult and purpose-bred cats were randomly allocated to one of two treatment groups based on pre-treatment tick counts. Weekly infestations with 50 unfed adult Ixodes ricinus (2 studies), Ixodes hexagonus (1 study), Dermacentor reticulatus (2 studies), or Rhipicephalus sanguineus (2 studies) were scheduled on Days -2, 5, 12, 19, 26 and 33...
April 2017: Veterinary Parasitology
https://www.readbyqxmd.com/read/28392045/low-prevalence-of-zoonotic-babesia-in-small-mammals-and-ixodes-ricinus-in-brittany-france
#3
M Jouglin, G Perez, A Butet, L Malandrin, S Bastian
In order to evaluate the zoonotic risk due to Babesia spp., especially B. microti, we investigated their presence in 597 individuals of five small mammal species and in 2620 questing nymphs of Ixodes ricinus in rural landscapes of Western France (Brittany). Small mammals (rodents and shrews) are indeed suspected to be reservoir hosts for B. microti, and the tick I. ricinus is the vector of the three main zoonotic species in Europe, i.e. B. divergens, B. venatorum and B. microti. Only one bank vole carried B...
March 25, 2017: Veterinary Parasitology
https://www.readbyqxmd.com/read/28381228/mesocarnivores-and-macroparasites-altitude-and-land-use-predict-the-ticks-occurring-on-red-foxes-vulpes-vulpes
#4
Attila D Sándor, Gianluca D'Amico, Călin M Gherman, Mirabela O Dumitrache, Cristian Domșa, Andrei Daniel Mihalca
BACKGROUND: The red fox Vulpes vulpes is the most common mesocarnivore in Europe and with a wide geographical distribution and a high density in most terrestrial habitats of the continent. It is fast urbanising species, which can harbor high numbers of different tick species, depending on the region. Here we present the results of a large-scale study, trying to disentangle the intricate relationship between environmental factors and the species composition of ectoparasites in red foxes...
April 5, 2017: Parasites & Vectors
https://www.readbyqxmd.com/read/28378989/study-of-the-non-parasitic-stage-in-ixodes-ricinus-after-co-feeding-with-dermacentor-reticulatus-in-three-infestations
#5
Katarzyna Bartosik, Alicja Buczek, Adam Borzęcki, Dorota Kulina
It was proved that transmission of some pathogens may occur between infected and uninfected ticks co-feeding on a host in the absence of systemic infection. The effect was studied of co-feeding of two different tick species Ixodes ricinus and Dermacentor reticulatus on the course of the non-parasitic stage. Species chosen for the experiment may share their habitats and co-infest animals in nature. In the course of the study the process of egg maturation, oviposition and larval hatching were investigated. In order to estimate if co-feeding influence can counteract host immunity, three subsequent infestations of rabbits were analyzed...
March 22, 2017: Annals of Agricultural and Environmental Medicine: AAEM
https://www.readbyqxmd.com/read/28378977/prevalence-of-infections-and-co-infections-with-6-pathogens-in-dermacentor-reticulatus-ticks-collected-in-eastern-poland
#6
Violetta Zając, Angelina Wójcik-Fatla, Anna Sawczyn, Ewa Cisak, Jacek Sroka, Anna Kloc, Zbigniew Zając, Alicja Buczek, Jacek Dutkiewicz, Katarzyna Bartosik
Occurrence of co-infections with various pathogens in ixodid ticks creates a risk of increased severity of tick-borne diseases in humans and animals exposed to bite of the ticks carrying multiple pathogens. Accordingly, co-infections in ticks were subject of numerous analyses, but almost exclusively with regard to Ixodes ricinus complex whereas potential tick vectors belonging to other genera were much less studied. Taking into consideration the role of Dermacentor reticulatus in the transmission of various pathogens, we carried out for the first time the comprehensive statistical analysis of co-infections occurring in this tick species...
March 21, 2017: Annals of Agricultural and Environmental Medicine: AAEM
https://www.readbyqxmd.com/read/28361038/tick-thioester-containing-proteins-and-phagocytosis-do-not-affect-transmission-of-borrelia-afzelii-from-the-competent-vector-ixodes-ricinus
#7
Veronika Urbanová, Ondřej Hajdušek, Helena Hönig Mondeková, Radek Šíma, Petr Kopáček
The present concept of the transmission of Lyme disease from Borrelia-infected Ixodes sp. ticks to the naïve host assumes that a low number of spirochetes that manage to penetrate the midgut epithelium migrate through the hemocoel to the salivary glands and subsequently infect the host with the aid of immunomodulatory compounds present in tick saliva. Therefore, humoral and/or cellular immune reactions within the tick hemocoel may play an important role in tick competence to act as a vector for borreliosis...
2017: Frontiers in Cellular and Infection Microbiology
https://www.readbyqxmd.com/read/28359294/temporal-dynamics-of-the-tick-ixodes-ricinus-in-northern-europe-epidemiological-implications
#8
Claire Cayol, Esa Koskela, Tapio Mappes, Anja Siukkola, Eva R Kallio
BACKGROUND: Tick-borne pathogens pose an increasing threat to human and veterinary health across the northern hemisphere. While the seasonal activity of ticks is largely determined by climatic conditions, host-population dynamics are also likely to affect tick abundance. Consequently, abundance fluctuations of rodents in northern Europe are expected to be translated into tick dynamics, and can hence potentially affect the circulation of tick-borne pathogens. We quantified and explained the temporal dynamics of the tick Ixodes ricinus in the northernmost part of its European geographical range, by estimating (i) abundance in vegetation and (ii) infestation load in the most common rodent species in the study area, the bank vole Myodes glareolus...
March 31, 2017: Parasites & Vectors
https://www.readbyqxmd.com/read/28340608/molecular-evidence-of-rickettsia-spp-in-ixodid-ticks-and-rodents-in-suburban-natural-and-rural-habitats-in-slovakia
#9
Lenka Minichová, Zuzana Hamšíková, Lenka Mahríková, Mirko Slovák, Elena Kocianová, Mária Kazimírová, Ľudovít Škultéty, Katarína Štefanidesová, Eva Špitalská
BACKGROUND: Natural foci of tick-borne spotted fever group (SFG) rickettsiae of public health concern have been found in Slovakia, but the role of rodents in their circulation is unclear. Ticks (Ixodes ricinus, Ixodes trianguliceps, Dermacentor marginatus, Dermacentor reticulatus, Haemaphysalis concinna and Haemaphysalis inermis) and tissues of rodents (Apodemus flavicollis, Apodemus sylvaticus, Myodes glareolus, Microtus arvalis, Microtus subterraneus and Micromys minutus) were examined for the presence of SFG rickettsiae and Coxiella burnetii by molecular methods...
March 24, 2017: Parasites & Vectors
https://www.readbyqxmd.com/read/28320640/a-comparative-test-of-ixodid-tick-identification-by-a-network-of-european-researchers
#10
A Estrada-Peña, G D'Amico, A M Palomar, M Dupraz, M Fonville, D Heylen, M A Habela, S Hornok, L Lempereur, M Madder, M S Núncio, D Otranto, M Pfaffle, O Plantard, M M Santos-Silva, H Sprong, Z Vatansever, L Vial, A D Mihalca
This study reports the results of a comparative test of identification of ticks occurring in Western Europe and Northern Africa. A total of 14 laboratories were voluntarily enrolled in the test. Each participant received between 22 and 25 specimens of adult and nymphal ticks of 11 species: Dermacentor marginatus, D. reticulatus, Haemaphysalis punctata, Hyalomma lusitanicum, Hy. marginatum, Ixodes ricinus, I. hexagonus, Rhipicephalus annulatus, R. bursa, R. rossicus, and/or R. sanguineus s.l. Ticks were morphologically identified by three of the co-authors and the identification confirmed by a fourth co-author who used molecular methods based on several genes...
March 8, 2017: Ticks and Tick-borne Diseases
https://www.readbyqxmd.com/read/28285602/genetic-characterization-of-rhipicephalus-sanguineus-sensu-lato-ticks-from-dogs-in-portugal
#11
Filipe Dantas-Torres, Carla Maia, Maria Stefania Latrofa, Giada Annoscia, Luís Cardoso, Domenico Otranto
BACKGROUND: The taxonomic status of the brown dog tick Rhipicephalus sanguineus (sensu stricto) is a subject of on-going debate; there is a consensus that populations of this tick species should be referred to as R. sanguineus (sensu lato) until its taxonomic status is resolved. Recent genetic studies revealed the existence of more than one lineage of R. sanguineus (s.l.) in temperate countries. In this study, we assessed the genetic identity of ticks collected from rural dogs living in several areas located in all major geographical regions of Portugal...
March 13, 2017: Parasites & Vectors
https://www.readbyqxmd.com/read/28285593/the-enzootic-life-cycle-of-borrelia-burgdorferi-sensu-lato-and-tick-borne-rickettsiae-an-epidemiological-study-on-wild-living-small-mammals-and-their-ticks-from-saxony-germany
#12
Anna Obiegala, Nina Król, Carolin Oltersdorf, Julian Nader, Martin Pfeffer
BACKGROUND: Borrelia burgdorferi (sensu lato) and rickettsiae of the spotted fever group are zoonotic tick-borne pathogens. While small mammals are confirmed reservoirs for certain Borrelia spp., little is known about the reservoirs for tick-borne rickettsiae. Between 2012 and 2014, ticks were collected from the vegetation and small mammals which were trapped in Saxony, Germany. DNA extracted from ticks and the small mammals' skin was analyzed for the presence of Rickettsia spp. and B...
March 13, 2017: Parasites & Vectors
https://www.readbyqxmd.com/read/28285589/molecular-detection-of-bartonella-henselae-in-11-ixodes-ricinus-ticks-extracted-from-a-single-cat
#13
Yvonne Regier, Wibke Ballhorn, Volkhard A J Kempf
BACKGROUND: Bartonella henselae is a highly prevalent, vector-borne pathogen. Transmission to humans and animals by ticks is discussed controversially. Here, we present a case report, where eleven Ixodes ricinus ticks all harbouring B. henselae DNA were removed from one single cat. RESULTS: The first feeding tick was tested positive for B. henselae DNA. The cat was also found to be seropositive for anti-B. henselae IgG antibodies (titer 1:640). Bartonella henselae was not cultivatable from cat blood...
March 13, 2017: Parasites & Vectors
https://www.readbyqxmd.com/read/28276795/influence-of-the-fabric-colour-for-the-ticks-ixodes-ricinus-and-dermacentor-reticulatus-attachment
#14
Anna Szczepańska, Dorota Kiewra, Elżbieta Lonc
No abstract text is available yet for this article.
July 2017: Infectious Diseases
https://www.readbyqxmd.com/read/28270232/melting-pot-of-tick-borne-zoonoses-the-european-hedgehog-contributes-to-the-maintenance-of-various-tick-borne-diseases-in-natural-cycles-urban-and-suburban-areas
#15
Setareh Jahfari, Sanne C Ruyts, Ewa Frazer-Mendelewska, Ryanne Jaarsma, Kris Verheyen, Hein Sprong
BACKGROUND: European hedgehogs (Erinaceus europaeus) are urban dwellers and host both Ixodes ricinus and Ixodes hexagonus. These ticks transmit several zoonotic pathogens like Borrelia burgdorferi (sensu lato), Anaplasma phagocytophilum, Rickettsia helvetica, Borrelia miyamotoi and "Candidatus Neoehrlichia mikurensis". It is unclear to what extent hedgehogs in (sub) urban areas contribute to the presence of infected ticks in these areas, which subsequently pose a risk for acquiring a tick-borne disease...
March 7, 2017: Parasites & Vectors
https://www.readbyqxmd.com/read/28261565/borrelia-diversity-and-co-infection-with-other-tick-borne-pathogens-in-ticks
#16
Cristian Raileanu, Sara Moutailler, Ionuţ Pavel, Daniela Porea, Andrei D Mihalca, Gheorghe Savuta, Muriel Vayssier-Taussat
Identifying Borrelia burgdorferi as the causative agent of Lyme disease in 1981 was a watershed moment in understanding the major impact that tick-borne zoonoses can have on public health worldwide, particularly in Europe and the USA. The medical importance of tick-borne diseases has long since been acknowledged, yet little is known regarding the occurrence of emerging tick-borne pathogens such as Borrelia spp., Anaplasma phagocytophilum, Rickettsia spp., Bartonella spp., "Candidatus Neoehrlichia mikurensis", and tick-borne encephalitis virus in questing ticks in Romania, a gateway into Europe...
2017: Frontiers in Cellular and Infection Microbiology
https://www.readbyqxmd.com/read/28257433/a-comparison-of-nonlinear-mixed-models-and-response-to-selection-of-tick-infestation-on-lambs
#17
Panya Sae-Lim, Lise Grøva, Ingrid Olesen, Luis Varona
Tick-borne fever (TBF) is stated as one of the main disease challenges in Norwegian sheep farming during the grazing season. TBF is caused by the bacterium Anaplasma phagocytophilum that is transmitted by the tick Ixodes ricinus. A sustainable strategy to control tick-infestation is to breed for genetically robust animals. In order to use selection to genetically improve traits we need reliable estimates of genetic parameters. The standard procedures for estimating variance components assume a Gaussian distribution of the data...
2017: PloS One
https://www.readbyqxmd.com/read/28255923/transmission-differentials-for-multiple-pathogens-as-inferred-from-their-prevalence-in-larva-nymph-and-adult%C3%A2-of-ixodes-ricinus-acari-ixodidae
#18
Per M Jensen, Christian S Christoffersen, Sara Moutailler, Lorraine Michelet, Kirstine Klitgaard, Rene Bødker
Ixodes ricinus serves as vector for a range of microorganisms capable of causing clinical illness in humans. The microorganisms occur in the same vector populations and are generally affected by the same tick-host interactions. Still, the instars have different host preferences which should manifest in different transmission patterns for various microorganisms in the tick populations, i.e., most microorganisms increase in prevalence rate from larvae to nymphs because their reservoirs are among small mammals and birds that serve as blood hosts for larvae...
February 2017: Experimental & Applied Acarology
https://www.readbyqxmd.com/read/28248955/first-identification-of-rickettsia-helvetica-in-questing-ticks-from-a-french-northern-brittany-forest
#19
Sarah I Bonnet, Richard E L Paul, Emmanuel Bischoff, Martine Cote, Evelyne Le Naour
Tick-borne rickettsiae are considered to be emerging, but data about their presence in western Europe are scarce. Ixodes ricinus ticks, the most abundant and widespread tick species in western Europe, were collected and tested for the presence of several tick-borne pathogens in western France, a region never previously explored in this context. There was a high tick abundance with a mean of 4 females, 4.5 males, and 23.3 nymphs collected per hour per collector. Out of 622 tested ticks, specific PCR amplification showed the presence of tick symbionts as well as low prevalence of Borrelia burgdorferi (0...
March 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28238642/detection-of-borrelia-burgdorferi-sensu-lato-and-anaplasma-phagocytophilum-in-questing-ticks-ixodes-ricinus-from-the-czech-republic
#20
Kateřina Kybicová, Kateřina Baštová, Marek Malý
The aim of the present study is to compare the prevalence of Borrelia burgdorferi sensu lato (s.l.) and Anaplasma phagocytophilum in questing ticks by using molecular methods from spring to autumn 2007. A total of 526 Ixodes ricinus ticks were collected from vegetation in three different sampling sites, representing an urban area (city park), a suburban area (village) and a natural montane habitat. The prevalence of B. burgdorferi s.l. was 17.3% (7.5% in males, 18.7% in females and 20.2% in nymphs), while 4...
February 20, 2017: Ticks and Tick-borne Diseases
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