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Experimental & Applied Acarology

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https://www.readbyqxmd.com/read/27873138/photo-enzymatic-repair-of-uvb-induced-dna-damage-in-the-two-spotted-spider-mite-tetranychus-urticae
#1
Yasumasa Murata, Masahiro Osakabe
Ambient ultraviolet-B (UVB) radiation induces lethal effects in the two-spotted spider mite Tetranychus urticae, whereas photoreactivation by irradiation with ultraviolet-A and visible light (VIS) plays an important role to increase survival of mites irradiated by UVB. The physiological mechanisms and ecological significance of photoreactivation in terrestrial arthropods have not been shown clearly. We verified the biological impact and accumulation of DNA lesions by UVB irradiation and the repair of them by photoreactivation in T...
November 21, 2016: Experimental & Applied Acarology
https://www.readbyqxmd.com/read/27858185/a-facultative-ectoparasite-attains-higher-reproductive-success-as-a-parasite-than-its-free-living-conspecifics
#2
Lien T Luong, Dewmi Subasinghe
Comparative and phylogenetic studies reveal that parasites evolved from free-living ancestors, but the underlying processes and mechanisms are not well understood. In order for selection to favor the evolution of parasitism, there must be pre-existing adaptations for host exploitation and a fitness advantage favoring the transition to parasitism. Here, we experimentally investigate the differential reproductive success of a facultative parasite, Macrocheles subbadius. Lifetime reproductive success was higher among female mites that fed on fruit fly hemolymph as parasites compared to free-living mites...
November 17, 2016: Experimental & Applied Acarology
https://www.readbyqxmd.com/read/27830375/erratum-to-highly-virulent-beauveria-bassiana-strains-against-the-two-spotted-spider-mite-tetranychus-urticae-show-no-pathogenicity-against-five-phytoseiid-mite-species
#3
Shengyong Wu, Haicui Xie, Maoye Li, Xuenong Xu, Zhongren Lei
No abstract text is available yet for this article.
November 9, 2016: Experimental & Applied Acarology
https://www.readbyqxmd.com/read/27822784/species-composition-distribution-ecological-preference-and-host-association-of-ticks-in-cyprus
#4
Andreas Tsatsaris, Dimosthenis Chochlakis, Byron Papadopoulos, Aikaterini Petsa, Leonidas Georgalis, Emmanouil Angelakis, Ioannis Ioannou, Yannis Tselentis, Anna Psaroulaki
Tick population and species depend on the effect of biotic and abiotic factors, especially vegetation, climate and host density; Cyprus, due to the mild climate, favors the appearance and spread of tick-borne infections. Our objective was to identify the tick species present in the island, to investigate their geographical distribution and their epidemiological implications. During a three-year study (2004-2006) we collected ticks from domestic and wild animals over the island of Cyprus. Data on temperature, humidity, altitude and vegetation, were also recorded...
November 7, 2016: Experimental & Applied Acarology
https://www.readbyqxmd.com/read/27815656/efficacy-of-tagetes-minuta-asteraceae-essential-oil-against-rhipicephalus-sanguineus-acari-ixodidae-on-infested-dogs-and-in-vitro
#5
Elis Maressa Gonçalves da Silva, Vinicius da Silva Rodrigues, Jaciara de Oliveira Jorge, Carolina Fonseca Osava, Matias Pablo Juan Szabó, Marcos Valério Garcia, Renato Andreotti
Ticks from Rhipicephalus sanguineus complex are widely distributed in the world and one species from this complex is the most common tick on dogs in Brazil, notably in urban areas. This tick is a vector of several diseases. Among others it transmits the agent of canine Ehrlichiosis, a major dog infectious disease and the agent of Rocky Mountain spotted fever. This tick can spread rapidly and develop intolerable infestations within no time. Currently tick control is done with acaricides and demand for such drugs has grown fast...
November 4, 2016: Experimental & Applied Acarology
https://www.readbyqxmd.com/read/27815655/molecular-analysis-of-rhipicephalus-sanguineus-acari-ixodidae-an-incriminated-vector-tick-for-babesia-vogeli-in-taiwan
#6
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/27812830/rhipicephalus-sanguineus-acari-ixodidae-species-complex-morphometric-and-ultrastructural-analyses
#7
Maria João Coimbra-Dores, Telmo Nunes, Deodália Dias, Fernanda Rosa
Although some studies have already been performed on Rhipicephalus sanguineus (Latreille) populations, there is still much disarray around its taxonomic classification. Rhipicephalus sanguineus, which is also known as " (brown dog tick) is a three-host tick that parasitizes many vertebrates, including occasional human hosts. It presents a worldwide distribution and is a vector of zoonosis with acknowledged public health importance. In Western Europe, R. turanicus (Pomerantsev) share many phenotypic features and is genetically closely related to R...
November 3, 2016: Experimental & Applied Acarology
https://www.readbyqxmd.com/read/27812829/anaplasma-phagocytophilum-in-questing-ixodes-ricinus-ticks-in-southwestern-finland
#8
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/27812828/bacteria-of-the-genera-ehrlichia-and-rickettsia-in-ticks-of-the-family-ixodidae-with-medical-importance-in-argentina
#9
Patrick S Sebastian, Evelina L Tarragona, María N Saracho Bottero, Atilio J Mangold, Ute Mackenstedt, Santiago Nava
The aim of this study was to get an overview about the occurrence of bacteria from the genus Ehrlichia and Rickettsia in ixodid ticks with medical importance in Argentina. Therefore, in 2013 and 2014, free-living ticks were collected in different provinces of northern Argentina. These ticks were determined as Amblyomma sculptum, Amblyomma neumanni, Amblyomma parvum, Amblyomma triste, Amblyomma ovale, Amblyomma tonelliae and Haemaphysalis juxtakochi. All samples were tested to determine the infection with Ehrlichia spp...
November 3, 2016: Experimental & Applied Acarology
https://www.readbyqxmd.com/read/27787614/molecular-diagnosis-of-the-tick-borne-pathogen-anaplasma-marginale-in-cattle-blood-samples-from-nigeria-using-qpcr
#10
Nusirat Elelu, Joana Ferrolho, Joana Couto, Ana Domingos, Mark C Eisler
Tick-borne diseases (TBDs) are some of the most important animal health and management problems in Africa, including Nigeria. This study aims to determine the prevalence of an important TBD, anaplasmosis, in a North-central region of Nigeria. Blood samples were collected from cattle and stored on Whatman FTA(®) cards. Information on village, age and sex associated with each cattle was also recorded. The packed red blood cell volume (PCV) for each blood sample was determined. After DNA extraction, pathogen presence was evaluated by TaqMan(®) based qPCR of which 75...
October 27, 2016: Experimental & Applied Acarology
https://www.readbyqxmd.com/read/27785647/convergent-evolution-of-aquatic-life-by-sexual-and-parthenogenetic-oribatid-mites
#11
Alena Krause, Patrick Pachl, Garvin Schulz, Ricarda Lehmitz, Anna Seniczak, Ina Schaefer, Stefan Scheu, Mark Maraun
Convergent evolution is one of the main drivers of traits and phenotypes in animals and plants. Here, we investigated the minimum number of independent colonisations of marine and freshwater habitats in derived oribatid mites (Brachypylina), a mainly terrestrial taxon. Furthermore, we investigated whether the reproductive mode (sexual vs. thelytokous) is associated with the habitat type (marine, freshwater) where the animals live. We hypothesized that continuous resource availability in freshwater systems fosters asexual reproduction...
October 26, 2016: Experimental & Applied Acarology
https://www.readbyqxmd.com/read/27783179/highly-virulent-beauveria-bassiana-strains-against-the-two-spotted-spider-mite-tetranychus-urticae-show-no-pathogenicity-against-five-phytoseiid-mite-species
#12
Shengyong Wu, Haicui Xie, Maoye Li, Xuenong Xu, Zhongren Lei
Entomopathogenic fungi and predatory mites can independently contribute to suppressing the two-spotted spider mite, Tetranychus urticae Koch. It is important to assess the risk of possible fungal infections in predators when a combination of them are being considered as a tandem control strategy for suppressing T. urticae. The first part of this study tested 12 Beauveria bassiana isolates for virulence in T. urticae. Strains SCWJ-2, SDDZ-9, LNSZ-26, GZGY-1-3 and WLMQ-32 were found to be the most potent, causing 37...
October 25, 2016: Experimental & Applied Acarology
https://www.readbyqxmd.com/read/27631766/expression-pattern-of-suba-in-different-tissues-and-blood-feeding-status-in-haemaphysalis-flava
#13
Lei Liu, Tian-Yin Cheng, Fen Yan
Tick-borne-diseases (TBD) pose a huge threat to the health of both humans and animals worldwide. Tick vaccines constitute an attractive alternative for tick control, due to their cost-efficiency and environmental-friendliness. Subolesin, a protective antigen against ticks, is reported to be a promising candidate for the development of broad-spectrum vaccines. However, the entire length of its gene, subA, and its gene expression pattern in different tissues and blood-feeding status (or different levels of engorgement) have not been studied extensively...
September 15, 2016: Experimental & Applied Acarology
https://www.readbyqxmd.com/read/27651325/manual-for-maintenance-of-multi-host-ixodid-ticks-in-the-laboratory
#14
Michael L Levin, Lauren B M Schumacher
Use of laboratory animals as hosts for blood-sucking arthropods remains a time-proven and the most efficient method for establishment and propagation of slowly feeding ixodid ticks, despite introduction of techniques involving artificial feeding on either animal skins or synthetic membranes. New Zealand White rabbits are usually the most accessible and most suitable hosts routinely used for establishment and maintenance of a large variety of multi-host tick species. Here we describe standard procedures for maintaining colonies of multi-host ixodid ticks by feeding all developmental stages (larvae, nymphs, and adults) upon New Zealand White rabbits...
November 2016: Experimental & Applied Acarology
https://www.readbyqxmd.com/read/27631765/kampinos-national-park-a-risk-area-for-spotted-fever-group-rickettsioses-central-poland
#15
Joanna Stańczak, Beata Biernat, Anna Matyjasek, Maria Racewicz, Marta Zalewska, Daria Lewandowska
Ixodid ticks are important vectors of a variety of bacterial and protozoan pathogens which cause infections in humans. In this study, altogether 1041 questing Ixodes ricinus (n = 305) and Dermacentor reticulatus ticks (n = 736), sympatrically occurring in Kampinos National Park (KPN), central-east Poland, were analyzed by PCR for Rickettsia species. Overall, the pathogen prevalence in ticks was 27.5 % for I. ricinus and 42.8 % for D. reticulatus. Sequencing analysis showed that the first tick species was exclusively infected with R...
November 2016: Experimental & Applied Acarology
https://www.readbyqxmd.com/read/27631764/long-term-study-of-the-prevalence-of-borrelia-burgdorferi-s-l-infection-in-ticks-ixodes-ricinus-feeding-on-blackbirds-turdus-merula-in-ne-poland
#16
Alicja Gryczyńska, Renata Welc-Falęciak
Seeking evidence to confirm that blackbirds (Turdus merula) may be involved in environmental maintenance of Borrelia burgdorferi s.l. (the causative agent of Lyme borreliosis), we conducted a long-term study over three separate 2-year periods, together embracing a span of almost 20 years, all in the same area in northeastern Poland. We examined a total of 78 blackbirds and collected 623 Ixodes ricinus ticks feeding on them. The tick infestation prevalence was found to be very high (89.7 %). Among all ticks collected, 9...
November 2016: Experimental & Applied Acarology
https://www.readbyqxmd.com/read/27631762/repellent-activity-of-desiccant-dusts-and-conidia-of-the-entomopathogenic-fungus-beauveria-bassiana-when-tested-against-poultry-red-mites-dermanyssus-gallinae-in-laboratory-experiments
#17
Ole Kilpinen, Tove Steenberg
Desiccant dusts and entomopathogenic fungi have previously been found to hold potential against the poultry red mite, which is an important pest in egg production and notoriously difficult to control. Both control agents may cause repellence in other arthropods and potentially also influence control levels adversely when used against the poultry red mite. Five desiccant dust products with good efficacy against the poultry red mite Dermanyssus gallinae caused avoidance behavior in mites when tested in bioassays...
November 2016: Experimental & Applied Acarology
https://www.readbyqxmd.com/read/27631761/haplotype-identification-and-detection-of-mitochondrial-dna-heteroplasmy-in-varroa-destructor-mites-using-arms-and-pcr-rflp-methods
#18
Bojan Gajić, Jevrosima Stevanović, Željko Radulović, Zoran Kulišić, Branislav Vejnović, Uroš Glavinić, Zoran Stanimirović
In the present study, amplification refractory mutation system (ARMS) and polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) methods were used for identification of recently described Serbia 1 (S1) and Peshter 1 (P1) mitochondrial haplotypes of Varroa destructor. Based on single nucleotide polymorphisms (SNPs) within cytochrome oxidase 1 (cox1) and cytochrome b (cytb) gene sequences, a total of 64 adult V. destructor females were analyzed from locations where the S1 and P1 haplotypes had been detected previously...
November 2016: Experimental & Applied Acarology
https://www.readbyqxmd.com/read/27506908/the-role-of-web-sharing-species-recognition-and-host-plant-defence-in-interspecific-competition-between-two-herbivorous-mite-species
#19
Yukie Sato, Juan M Alba, Martijn Egas, Maurice W Sabelis
When competing with indigenous species, invasive species face a problem, because they typically start with a few colonizers. Evidently, some species succeeded, begging an answer to the question how they invade. Here, we investigate how the invasive spider mite Tetranychus evansi interacts with the indigenous species T. urticae when sharing the solanaceous host plant tomato: do they choose to live together or to avoid each other's colonies? Both species spin protective, silken webs on the leaf surfaces, under which they live in groups of con- and possibly heterospecifics...
November 2016: Experimental & Applied Acarology
https://www.readbyqxmd.com/read/27502113/detection-and-localization-of-solitalea-like-and-cardinium-bacteria-in-three-acarus-siro-populations-astigmata-acaridae
#20
Jan Hubert, Jan Kopecky, Marta Nesvorna, M Alejandra Perotti, Tomas Erban
Bacteria associated with mites influence their fitness, nutrition and reproduction. Previously, we found Solitalea-like (Sphingobacteriales) and Candidatus Cardinium (Cytophagales) bacteria in the stored product mite Acarus siro L. by cloning and using pyrosequencing. In this study, taxon-specific primers targeting 16S rRNA gene were used to detect and quantify the bacteria in mites and eggs of three A. siro populations. The specific probes for fluorescent in situ hybridization (FISH) were used to localize Solitalea-like and Cardinium bacteria in mite bodies...
November 2016: Experimental & Applied Acarology
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