DNA methylation at the fifth position of cytosine (5mC) and at the sixth position of adenine (6 mA) plays an important role in the regulation of the gene expression and, in eukaryotes, is essential for normal development. For Ixodes ricinus, the most common European arthropod vector of human and animal pathogens, the DNA methylation profile and the role of DNA methylation in tick development are still under discussion. Our goal was to analyze the status of I. ricinus DNA methylation at different life stages and identify enzymes that produce this type of DNA modification. We found that 5mC and 6mA are present in I. ricinus genomic DNA at all life stages. In the transcriptome of I. ricinus, we identified the sequences of the putative IrDNMT1, IrDNMT3, and IrDAMT enzymes, and bioinformatic analysis and three-dimensional modeling predicted their DNA methylation activity. This confirms that I. ricinus possesses a complete DNA methylation toolkit. Our results suggest that DNA methylation is important for the physiology and transstadial development of ticks.
- MeSH
- epigeneze genetická * MeSH
- genetická transkripce MeSH
- klíště enzymologie genetika růst a vývoj MeSH
- larva genetika růst a vývoj MeSH
- methyltransferasy chemie genetika MeSH
- molekulární konformace MeSH
- nymfa genetika růst a vývoj MeSH
- ovum růst a vývoj MeSH
- proteiny členovců chemie genetika MeSH
- regulace genové exprese * MeSH
- transkriptom * MeSH
- věkové faktory MeSH
- zvířata MeSH
- Check Tag
- ženské pohlaví MeSH
- zvířata MeSH
- Publikační typ
- časopisecké články MeSH
- práce podpořená grantem MeSH
An indoor terrarium population of Amblyomma geoemydae was established subsequent to the import of a single yellow-marginated box turtle Cuora flavomarginata. This indoor tick population revealed an unexpected resistance against de-ticking trials, with persistence between 2010 and 2015, when the ticks were successfully eliminated. Ticks were collected from the bodies and shells of turtles, as well as from terraria soil. Species diagnosis of ticks was carried out according to distinguishable morphological characters and supported by molecular analysis using DNA-barcoding. Introduced exotic ticks are potential vectors of pathogens and can have an impact on wildlife, domestic animals and the human population. This case emphasizes the need for sharp surveillance and control measures on imported reptiles.
- MeSH
- infestace klíšťaty parazitologie prevence a kontrola veterinární MeSH
- Ixodidae klasifikace genetika růst a vývoj fyziologie MeSH
- larva klasifikace genetika růst a vývoj fyziologie MeSH
- nymfa klasifikace genetika růst a vývoj fyziologie MeSH
- roční období MeSH
- taxonomické DNA čárové kódování veterinární MeSH
- zavlečené druhy MeSH
- želvy * MeSH
- zvířata v ZOO MeSH
- zvířata MeSH
- Check Tag
- ženské pohlaví MeSH
- zvířata MeSH
- Publikační typ
- časopisecké články MeSH
- práce podpořená grantem MeSH
- Geografické názvy
- Rakousko MeSH
The tick subgenus Afrixodes Morel 1966 (Ixodidae) is distributed in sub-Saharan Africa. It consists of about 60 species which are described based on a few specimens and/or only some developmental stages, mostly adults. Because of this, the diagnosis of the African species of Ixodes is in many aspects complicated. Ixodes rasus Neumann 1899 is a common species, widely distributed in tropical and subtropical moist broadleaved forests in central Africa, whose morphology remains poorly described. We redescribe the adults of the species and provide molecular data for 16S rDNA based on three questing females and one male collected in the Central African Republic. Both sexes have an anal groove rounded and closed. The female has syncoxae on coxae I to III, a dental formula of 2/2, and long, curved auriculae. The male has moderate syncoxae on coxae I-III, coxae I-II carry one single internal spur each: coxae III and IV unarmed. The cornua are absent in the male, and the auriculae are small lobes. The male pregenital plate is longer than broad, with an anterior margin widely rounded; the median plate is large and clearly divergent posteriorly, with adanal plates fused posteriorly to the anus, and a dental formula of 4/4 (one row of 5/5). The molecular features of 16S rDNA place I. rasus near I. aulacodi (the only other Afrixodes species for which 16S rDNA is available) and near I. turdus and I. frontalis; two species of ticks of the Palearctic region, which commonly infest birds. The paucity of data regarding the subgenus Afrixodes makes it necessary to provide reliable and comparable re-descriptions of several species, as well as description of the immature stages for many of the currently known taxa.
- MeSH
- fylogeneze MeSH
- Ixodidae anatomie a histologie klasifikace genetika MeSH
- klíště anatomie a histologie klasifikace genetika MeSH
- larva anatomie a histologie genetika MeSH
- nymfa anatomie a histologie genetika MeSH
- RNA ribozomální 16S MeSH
- zvířata MeSH
- Check Tag
- mužské pohlaví MeSH
- ženské pohlaví MeSH
- zvířata MeSH
- Publikační typ
- časopisecké články MeSH
- práce podpořená grantem MeSH
- Geografické názvy
- Středoafrická republika MeSH
A novel rickettsial sequence in the citrate synthase gltA gene indicating a novel Rickettsia species has been detected in 7 out of 4524 Ixodes ricinus ticks examined within several surveys performed in the Czech Republic from 2005 to 2009. This new Candidatus Rickettsia sp. sequence has been found in 2 nymphs feeding on wild birds (Luscinia megarhynchos and Erithacus rubecula), in a male tick from vegetation, and 4 ticks feeding on a dog (3 males, 1 female tick). Portions of the ompA, ompB, sca4, and htrA genes were not amplifiable in these samples. A maximum likelihood tree of rickettsiae based on comparisons of partial amino acid sequences of citrate synthase and nucleotide sequences of 16S rDNA genes and phylogenetic analysis revealed a basal position of the novel species in the proximity of R. bellii and R. canadensis. The novel species has been named 'Candidatus Rickettsia mendelii' after the founder of genetics, Gregor Mendel.
- MeSH
- bakteriální proteiny genetika MeSH
- citrátsynthasa genetika MeSH
- epidemiologické monitorování MeSH
- fylogeneze * MeSH
- infestace klíšťaty epidemiologie parazitologie veterinární MeSH
- klíště genetika mikrobiologie MeSH
- lidé MeSH
- nemoci přenášené klíšťaty diagnóza epidemiologie parazitologie veterinární MeSH
- nymfa genetika mikrobiologie MeSH
- psi MeSH
- ptáci mikrobiologie parazitologie MeSH
- Rickettsia klasifikace genetika izolace a purifikace MeSH
- rickettsiové infekce epidemiologie mikrobiologie veterinární MeSH
- RNA ribozomální 16S genetika MeSH
- zvířata MeSH
- Check Tag
- lidé MeSH
- mužské pohlaví MeSH
- psi MeSH
- ženské pohlaví MeSH
- zvířata MeSH
- Publikační typ
- časopisecké články MeSH
- práce podpořená grantem MeSH
- Geografické názvy
- Česká republika epidemiologie MeSH
Saliva of blood-sucking arthropods contains a complex cocktail of pharmacologically active compounds that assists feeding by counteracting their hosts' hemostatic and inflammatory reactions. Panstrongylus megistus (Burmeister) is an important vector of Chagas disease in South America, but despite its importance there is only one salivary protein sequence publicly deposited in GenBank. In the present work, we used Illumina technology to disclose and publicly deposit 3,703 coding sequences obtained from the assembly of >70 million reads. These sequences should assist proteomic experiments aimed at identifying pharmacologically active proteins and immunological markers of vector exposure. A supplemental file of the transcriptome and deducted protein sequences can be obtained from http://exon.niaid.nih.gov/transcriptome/P_megistus/Pmeg-web.xlsx.
- MeSH
- fylogeneze MeSH
- hmyzí proteiny genetika metabolismus MeSH
- molekulární sekvence - údaje MeSH
- nymfa genetika růst a vývoj metabolismus MeSH
- Panstrongylus genetika růst a vývoj metabolismus MeSH
- proteomika MeSH
- sialoglykoproteiny genetika metabolismus MeSH
- slinné proteiny a peptidy genetika metabolismus MeSH
- sliny chemie MeSH
- zvířata MeSH
- Check Tag
- zvířata MeSH
- Publikační typ
- časopisecké články MeSH
- práce podpořená grantem MeSH
- Research Support, N.I.H., Extramural MeSH
- MeSH
- fylogeneze MeSH
- Heteroptera klasifikace genetika růst a vývoj MeSH
- molekulární sekvence - údaje MeSH
- nymfa klasifikace genetika růst a vývoj MeSH
- polymerázová řetězová reakce MeSH
- respirační komplex IV genetika MeSH
- sekvenční analýza DNA MeSH
- taxonomické DNA čárové kódování MeSH
- zvířata MeSH
- Check Tag
- zvířata MeSH
- Publikační typ
- časopisecké články MeSH
- Geografické názvy
- Česká republika MeSH
- Polsko MeSH
