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M. R. Fordy - One of the best experts on this subject based on the ideXlab platform.
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morphological observations on the formation of the spiracle of Argas persicus oken acarina metastigmata Argasidae during moulting
Acarologia, 1992Co-Authors: Philip J.a. Pugh, P. E. King, M. R. FordyAbstract:The morphology of the nymphal spiracle of Argas persicus (Oken) is described in an advanced developmental state during the moult. This modification of the ’simple type’ of tracheal/spiracular moulting is compared with the ’elateroid type’ of the Ixodidae.
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Functional morphology of the spiracles in two species of Argasidae (Metastigmata: Acarina), with particular reference to responses to desiccation
Zoological Journal of the Linnean Society, 1991Co-Authors: Philip J.a. Pugh, P. E. King, M. R. FordyAbstract:Spiracle morphology of Argas persicus (Oken) and Omithodorus acinus Whittick is described and the differences between the two species are related to biological factors. Argasid and ixodid spiracle structures and functions are compared.
Philip J.a. Pugh - One of the best experts on this subject based on the ideXlab platform.
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morphological observations on the formation of the spiracle of Argas persicus oken acarina metastigmata Argasidae during moulting
Acarologia, 1992Co-Authors: Philip J.a. Pugh, P. E. King, M. R. FordyAbstract:The morphology of the nymphal spiracle of Argas persicus (Oken) is described in an advanced developmental state during the moult. This modification of the ’simple type’ of tracheal/spiracular moulting is compared with the ’elateroid type’ of the Ixodidae.
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Functional morphology of the spiracles in two species of Argasidae (Metastigmata: Acarina), with particular reference to responses to desiccation
Zoological Journal of the Linnean Society, 1991Co-Authors: Philip J.a. Pugh, P. E. King, M. R. FordyAbstract:Spiracle morphology of Argas persicus (Oken) and Omithodorus acinus Whittick is described and the differences between the two species are related to biological factors. Argasid and ixodid spiracle structures and functions are compared.
P. E. King - One of the best experts on this subject based on the ideXlab platform.
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morphological observations on the formation of the spiracle of Argas persicus oken acarina metastigmata Argasidae during moulting
Acarologia, 1992Co-Authors: Philip J.a. Pugh, P. E. King, M. R. FordyAbstract:The morphology of the nymphal spiracle of Argas persicus (Oken) is described in an advanced developmental state during the moult. This modification of the ’simple type’ of tracheal/spiracular moulting is compared with the ’elateroid type’ of the Ixodidae.
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Functional morphology of the spiracles in two species of Argasidae (Metastigmata: Acarina), with particular reference to responses to desiccation
Zoological Journal of the Linnean Society, 1991Co-Authors: Philip J.a. Pugh, P. E. King, M. R. FordyAbstract:Spiracle morphology of Argas persicus (Oken) and Omithodorus acinus Whittick is described and the differences between the two species are related to biological factors. Argasid and ixodid spiracle structures and functions are compared.
Faezeh Faghihi - One of the best experts on this subject based on the ideXlab platform.
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Molecular Detection of Spotted Fever Group Rickettsia (Rickettsiales: Rickettsiaceae) in Ticks of Iran
Archives of Razi Institute, 2020Co-Authors: Asadollah Hosseini-chegeni, Zakkyeh Telmadarraiy, Majid Tavakoli, Faezeh FaghihiAbstract:Ticks are reservoir hosts of pathogenic Rickettsia in humans and domestic animals. Most pathogenic Rickettsia species belong to the spotted fever group (SFG). The present study aimed to determine the tick species infected with Rickettsia based on the genus-specific 23S ribosomal ribonucleic acid (rRNA), 16S rRNA, and citrate synthase (gltA) gene fragments. A total of 61 tick specimens were selected for molecular assay and 12 samples for sequencing. Phylogenetic analysis was conducted using neighbor-joining and Bayesian inference methods. Argas persicus, Haemaphysalis sulcata, Ha. inermis, and Hyalomma asiaticum were infected by spotted fever Rickettsia. The SFG is the main group of Rickettsia that can be detected in the three genera of ticks from Iran.
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The first record of Rickettsia hoogstraalii (Rickettsiales: Rickettsiaceae) from Argas persicus (Acari: Argasidae) in Iran
Systematic and Applied Acarology, 2020Co-Authors: Habibollah Kooshki, Zakkyeh Telmadarraiy, Faezeh Faghihi, Gholamreza Goudarzi, Hamideh Edalat, Asadollah Hosseini-chegeniAbstract:The rickettsiae (Rickettsiales: Rickettsiaceae) are obligate intracellular and Gram-negative bacteria. They depend on arthropod vectors as well as the mammalian hosts for survival in the nature. 327 soft tick specimens associated the aviary were collected in Khorramabad county of Lorestan province, western Iran. Ticks were identified as Argas persicus according to a taxonomical key. Then, 64 tick specimens were analyzed for the presence of rickettsial DNA. Out of 64 specimens, 6 of them were positive and totally three DNA sequences including a single sequence of each ompA, ompB and sca4 genes was obtained from A. persicus ticks. Rickettsia hoogstraalii was detected in Ar. persicus representing the first record of this species in Iran. Sca4 gene fragment was unable to specify rickettsial infection in Ar. persicus ticks according to BLAST analysis.
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molecular detection of borrelia anserina in Argas persicus acari Argasidae ticks collected from lorestan province west of iran
persian journal of acarology, 2017Co-Authors: Asadollah Hosseini Chegeni, Zakkyeh Telmadarraiy, Majid Tavakoli, Faezeh FaghihiAbstract:Borrelia anserina is the agent of avian borreliosis, an acute septicemic disease of a variety of avian species in tropical and warm temperate regions of the world. Avian borreliosis is one of the most widespread poultry diseases in Iran, and is of great economic importance. The present study was designed to detect B. anserina in Argas persicus ticks. Specimens were collected from the cracks of aviary in Lorestan province of Iran. Then the salivary glands, ovaries and uterus of ticks were dissected to detect B. anserina within the specific organ using molecular methods. DNA was extracted by Phenol-chloroform method and then a fragment of flagellin gene ( fla B) of B. anserina was amplified by polymerase chain reaction. According to our results, the fla B target fragment was detected in Argas persicus ticks collected from Lorestan province. It seems that B. anserina is widely distributed in A. persicus vector ticks. Based on the result, B. anserina strain of Iran is similar to B. anserina fla B sequences reported from other parts the world.
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comparative susceptibility of cypermethrin in ornithodoros lahorensis neuman and Argas persicus oken acari Argasidae field populations
Pakistan Journal of Biological Sciences, 2007Co-Authors: Zakkyeh Telmadarraiy, Majid Tavakoli, Hassan Nasirian, Hassan Vatandoost, M Abuolhassani, Zabiholah Zarei, Omid Banafshi, Javad Rafinejad, S Salarielac, Faezeh FaghihiAbstract:The toxicity of cypermethrin was determined in five different soft tick strains of Argas persicus Oken and Ornithodoros lahorensis Neuman by topical application method. The O. lahorensis Bij, O. lahorensis west O1, O. lahorensis Mesh, A. persicus Lor, A. persicus West Ap strains were collected from Bijar, Kurdistan province, Takab, Western Azerbaijan province, Meshkinshar, Ardebil province, Khoramabad, Lorestan province, Takab, Western Azerbaijan province of different areas of Islamic Republic of Iran, respectively during 2004 and 2005. In the topical application bioassay, the average LD50 of O. lahorensis Bij, West O1, Mesh and A. reflexus Lor and West AP strains were 0.03, 0.04, 1.7, 0.7 and 1.7 microg tick(-1), respectively and the steep slopes of dose-response curves indicated that the field population of these soft tick strains were homogenous in response to cypermethrin. Comparison of the resistance ratio of collected strains with susceptible strain showed a resistance ratio of 56.7 and 2.4-folds for cypermethrin in O. lahorensis Mesh and A. reflexus West Ap strains, whereas the O. lahorensis West O1 completely susceptible to cypermethrin.
Sally J Cutler - One of the best experts on this subject based on the ideXlab platform.
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Candidatus Rickettsia hoogstraalii in Ethiopian Argas persicus ticks.
Ticks and tick-borne diseases, 2012Co-Authors: Vera Pader, Joanna Nikitorowicz Buniak, Alemseged Abdissa, Haileeysus Adamu, Tadele Tolosa, Abebaw Gashaw, Ronald R Cutler, Sally J CutlerAbstract:Ethiopian soft ticks Argas persicus, hard ticks including both Amblyomma variegatum and Rhipicephalus (Boophilus) spp., and fleas were collected from livestock, traditional human dwellings, and cracks and crevices of trees. They were assessed in pools for the presence of Rickettsia using PCR-based methods. The extracted tick DNA was subjected to molecular screening for Rickettsia, which revealed 50.5% of the pooled samples to be positive for Rickettsia spp. These were then subjected to multi-gene analysis using both outer surface proteins and housekeeping genes with proven discriminatory potential. Sequencing of the citrate synthase and outer membrane genes clearly led to the identification of three distinct rickettsial species, Candidatus Rickettsia hoogstraalii in Argas persicus ticks; R. africae in hard tick pools, and R. felis in fleas. Furthermore, we demonstrated the presence of the plasmid-borne small heat-shock protein gene hsp2 in DNA from A. persicus ticks suggesting that Candidatus R. hoogstraalii carried by these ticks possess a plasmid. Unlike chromosomal gene sequences, the hsp2 gene failed to cluster with Candidatus R. hoogstraalii, instead falling into an isolated separate clade, suggesting a different origin for the plasmid.