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• W1799804940 abstract "In recent years there have been several reports about the presence of new spotted fever group (SFG) Rickettsia in a geographic range [1Parola P Paddock CD Raoult D Tick-borne rickettsioses around the world, emerging diseases challenging old concepts.Clin Microbiol Rev. 2005; 18: 719-756Crossref PubMed Scopus (752) Google Scholar, 2Brouqui P Parola P Fournier PE Raoult D Spotted fever rickettsioses in southern and eastern Europe.FEMS Immunol Med Microbiol. 2007; 49: 2-12Crossref PubMed Scopus (119) Google Scholar]. The specific identification of the tick rickettsiae is established by polymerase chain reaction (PCR) amplification and DNA sequence of relevant rickettsial genes, particularly the outer membrane proteins genes (ompA and ompB), the citrate synthase (gltA) and the 16S rRNA genes [3Márquez FJ Muniain MA Soriguer RC et al.Genotypic identification of an undescribed spotted fever group Rickettsia in Ixodes ricinus from southwestern Spain.Am J Trop Med. 1998; 58: 570-577PubMed Google Scholar, 4Rydkina E Roux V Fetisova N et al.New Rickettsiae in ticks collected in territories of the former Soviet Union.Emerg Infect Dis. 1999; 5: 811-814Crossref PubMed Scopus (100) Google Scholar]. The epidemiology of rickettsiae and rickettsial diseases in Andalusia (south Iberian Peninsula) is not well known. The purpose of this study was to identify and characterise SFG rickettsiae present in ticks from wild ungulates in two significant natural parks and surrounding areas situated in Andalusia (P.N. Sierra Nevada and Doñana). The presence of Rickettsia in hard ticks was evaluated using molecular techniques (PCR amplification and sequencing) over a sample of 180 ticks of eight species (Ixodes ricinus Linnaeus, 1746, Haemaphysalis sulcata Canestrini and Fanzago, 1877, H. punctata Canestrini and Fanzago, 1877, Hyalomma lusitanicum Koch, 1844, Rh. turanicus Pomerantzev, 1940, Rh. bursa Canestrini and Fanzago, 1877, Rh. (Boophilus) annulatus (Say, 1821) and Dermacentor marginatus (Sulzer, 1776)) collected on 23 red deer, 5 fallow deer, 23 Iberian ibex and 32 wild boar during population control programmes in each national park during the years 2002–2003 (Table 1). D. marginatus, I. ricinus, Hy lusitanicum and Rh. bursa appeared in both natural spaces whereas Rh. annulatus and H. sulcata were restricted, respectively, to Doñana and Sierra Nevada. DNA was extracted individually using the kit Nucleo Spin Tissue (Macherey-Nagel, Düren, Germany) and specific rickettsial sequences were detected by using PCR primers that amplify a portion of glta, ompA and ompB genes, respectively [3Márquez FJ Muniain MA Soriguer RC et al.Genotypic identification of an undescribed spotted fever group Rickettsia in Ixodes ricinus from southwestern Spain.Am J Trop Med. 1998; 58: 570-577PubMed Google Scholar]. Positive PCR products were sequenced in a CEQ 2000XL capillary DNA sequencer (Beckman Coulter Life, Brea, CA, USA) according to the manufacturer's instructions. Sequences were manually aligned and analysed with Bioedit and identified using the BLAST feature of GenBank.TABLE 1Capture data (ticks and host) from Doñana and Sierra Nevada National ParksHostRed deerFallow deerIberian ibexNational ParkDoñanaDoñanaS. NevadaHost number23523Tick speciesPos./ass.R. mon.R. hel.R. rao.MFPos./ass.MFPos./ass.R. mon.R. hel.R. sp.R. mas.MFIxodes ricinus6 (10)51280 (2)129 (11)8111Haemaphysalis sulcata5 (16)5511Haemaphysalis punctata0 (7)34Hyalomma lusitanicum0 (20)182Dermacentor marginatus1 (5)132Rhipicephalus turanicus0 (2)21 (3)112Rhipicephalus bursa0 (15)1050 (6)420 (16)412Rhipicephalus annulatus0 (6)06Total tick number3629541036HostWild boarTotal ticksNational ParkDoñanaS. NevadaHost number824Tick speciesPos./ass.R. mon.R. rao.MFPos./ass.R. mon.R. rao.R. slo.R. sp.MFMFTotalIxodes ricinus1 (4)1229 (18)91854146Hamaphysalis sulcata1 (1)1161117Hamaphysalis punctata347Hyalomma lusitanicum0 (4)40 (2)224226Dermacentor marginatus2 (6)22416 (25)1151312181836Rhipicephalus turanicus145Rhipicephalus bursa181937Rhipicephalus annulatus41822Total tick number86163075105180Pos./ass., positive vs. assayed; M, male, F, female; R. hel., R. helvetica; R. mas., R. massiliae; R. mon., R. monacensis; R. rao; R. raoultii; R. slo., R. slovaca; R. sp., undescribed rickettsiae. Open table in a new tab Pos./ass., positive vs. assayed; M, male, F, female; R. hel., R. helvetica; R. mas., R. massiliae; R. mon., R. monacensis; R. rao; R. raoultii; R. slo., R. slovaca; R. sp., undescribed rickettsiae. Overall, rickettsial DNA was detected in 51 (28.3%) of the examined ticks. Sequence analysis revealed that I. ricinus, captured on red deer, Iberian ibex and wild boar, were infected with R. monacensis, including strain IRS3, and R. helvetica (prevalences of 50.0% and 4.3%, respectively), while D. marginatus, mainly from wild boar, presents R. slovaca (13.9%) and R. raoultii (38.9%). R. massiliae was found in one Rh. turanicus (prevalence of 20.0%) from Iberian ibex. H. sulcata, from Iberian ibex of Sierra Nevada, shows the presence (6/17, prevalence of 35.3%) of a still not described Rickettsia sp. that is closer to R. hoogstraalii. None of the H. punctata, Hy. lusitanicum, Rh. annulatus or Rh. bursa ticks studied contained rickettsiae. This study confirms the presence of several rickettsiae species in ticks affecting wild ungulates in the south of the Iberian Peninsula. Ticks infected with zoonotic Rickettsia species (R. slovaca, R. raoultii, R. helvetica and R. monacensis) could be maintained and dispersed by wild ungulates. The rickettsia detected in H. sulcata appears to have a distribution limited to mediumhigh Mediterranean mountain ranges. The high prevalence detected should be taken into consideration because elevated ungulate host and vector population densities will be related to an increase in the risk of transmission of these pathogens to the human population that lives, works or uses temporally these natural spaces. This study has been supported by grants from the Andalusia Government (Research Group BIO-294). The authors thank Celia Sánchez and José E. Granados for help in sampling and Dr Ricardo Oya of the Research Services of Jaén University for his technical assistance in sequencing. The experiments comply with the current laws of the European Union." @default.
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• W1799804940 title "Rickettsiae in ticks from wild ungulates of Sierra Nevada and Doñana national parks (Spain)" @default.
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• W1799804940 doi "https://doi.org/10.1111/j.1469-0691.2008.02148.x" @default.
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