Article
Bacteria associated with Amblyomma cajennense tick eggs
Registro en:
FERREIRA, Erik Machado; et al. Bacteria associated with Amblyomma cajennense tick eggs. Genetics and Molecular Biology, v.38, n.4,p. 477-483, 2015.
1415-4757
10.1590/S1415-475738420150040
Autor
Ferreira, Erik Machado
Vizzoni, Vinicius Figueiredo
Piesman, Joseph
Gazeta, Gilberto Salles
Soares, Carlos Augusto Gomes
Resumen
Ticks represent a large group of pathogen vectors that blood feed on a diversity of hosts. In the Americas, the
Ixodidae ticks Amblyomma cajennense are responsible for severe impact on livestock and public health. In the present
work, we present the isolation and molecular identification of a group of culturable bacteria associated with A.
cajennense eggs from females sampled in distinct geographical sites in southeastern Brazil. Additional comparative
analysis of the culturable bacteria from Anocentor nitens, Rhipicephalus sanguineus and Ixodes scapularis tick eggs
were also performed. 16S rRNA gene sequence analyses identified 17 different bacterial types identified as Serratia
marcescens, Stenotrophomonas maltophilia, Pseudomonas fluorescens, Enterobacter spp., Micrococcus luteus,
Ochrobactrum anthropi, Bacillus cereus and Staphylococcus spp., distributed in 12 phylogroups. Staphylococcus
spp., especially S. sciuri, was the most prevalent bacteria associated with A. cajennense eggs, occurring in 65% of
the samples and also frequently observed infecting A. nitens eggs. S. maltophilia, S. marcescens and B. cereus occurred
infecting eggs derived from specific sampling sites, but in all cases rising almost as pure cultures from infected
A. cajennense eggs. The potential role of these bacterial associations is discussed and they possibly represent new
targets for biological control strategies of ticks and tick borne diseases.