Comparative Evaluation of Infected and Noninfected Amblyomma triste Ticks with Rickettsia parkeri, the Agent of an Emerging Rickettsiosis in the New World
Joint Authors
Soares, Herbert Sousa
Nieri-Bastos, F. A.
Szabó, M. P. J.
Pacheco, R. C.
Soares, J. F.
Moraes-Filho, J.
Dias, R. A.
Labruna, M. B.
Source
Issue
Vol. 2013, Issue 2013 (31 Dec. 2013), pp.1-6, 6 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2013-07-08
Country of Publication
Egypt
No. of Pages
6
Main Subjects
Abstract EN
The distribution of Rickettsia parkeri in South America has been associated with Amblyomma triste ticks.
The present study evaluated under laboratory conditions two colonies of A.
triste: one started from engorged females that were naturally infected by R.
parkeri (designated as infected group); the other started from noninfected females (designated as control group).
Both colonies were reared in parallel for five consecutive generations.
Tick-naïve domestic rabbits were used for feeding of each tick stage and generation.
R.
parkeri was preserved by transstadial maintenance and transovarial transmission in A.
triste ticks for five consecutive generations, because all tested larvae, nymphs, and adults from the infected group were shown by PCR to contain rickettsial DNA.
All rabbits infested by larvae, nymphs, and adults from the infected group seroconverted, indicating that these tick stages were all vector competent for R.
parkeri.
Expressive differences in mortality rates were observed between engorged nymphs from the infected and control groups, as indicated by 65.9% and 92.4% molting success, respectively.
Our results indicate that A.
triste can act as a natural reservoir for R.
parkeri.
However, due to deleterious effect caused by R.
parkeri on engorged nymphs, amplifier vertebrate hosts might be necessary for natural long-term maintenance of R.
parkeri in A.
triste.
American Psychological Association (APA)
Nieri-Bastos, F. A.& Szabó, M. P. J.& Pacheco, R. C.& Soares, J. F.& Soares, Herbert Sousa& Moraes-Filho, J.…[et al.]. 2013. Comparative Evaluation of Infected and Noninfected Amblyomma triste Ticks with Rickettsia parkeri, the Agent of an Emerging Rickettsiosis in the New World. BioMed Research International،Vol. 2013, no. 2013, pp.1-6.
https://search.emarefa.net/detail/BIM-1030513
Modern Language Association (MLA)
Nieri-Bastos, F. A.…[et al.]. Comparative Evaluation of Infected and Noninfected Amblyomma triste Ticks with Rickettsia parkeri, the Agent of an Emerging Rickettsiosis in the New World. BioMed Research International No. 2013 (2013), pp.1-6.
https://search.emarefa.net/detail/BIM-1030513
American Medical Association (AMA)
Nieri-Bastos, F. A.& Szabó, M. P. J.& Pacheco, R. C.& Soares, J. F.& Soares, Herbert Sousa& Moraes-Filho, J.…[et al.]. Comparative Evaluation of Infected and Noninfected Amblyomma triste Ticks with Rickettsia parkeri, the Agent of an Emerging Rickettsiosis in the New World. BioMed Research International. 2013. Vol. 2013, no. 2013, pp.1-6.
https://search.emarefa.net/detail/BIM-1030513
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1030513