Consulta: creatorFacets:"Machado-Ferreira,Erik"
Registros recuperados: 3
Data/hora: 11/06/2024 07:15:28

A prevalent alpha-proteobacterium Paracoccus sp. in a population of the Cayenne ticks (Amblyomma cajennense) from Rio de Janeiro, Brazil
Provedor de dados: 74
Autores: Machado-Ferreira,Erik; Piesman,Joseph; Zeidner,Nordin S; Soares,Carlos A.G.
As Rocky Mountain Spotted Fever is the most common tick-borne disease in South America, the presence of Rickettsia sp. in Amblyomma ticks is a possible indication of its endemicity in certain geographic regions. In the present work, bacterial DNA sequences related to Rickettsia amblyommii genes in A. dubitatum ticks, collected in the Brazilian state of Mato Grosso, were discovered. Simultaneously, Paracoccus sp. was detected in aproximately 77% of A. cajennense specimens collected in Rio de Janeiro, Brazil. This is the first report of Paracoccus sp. infection in a specific tick population, and raises the possibility of these bacteria being maintained and/or transmitted by ticks. Whether Paracoccus sp. represents another group of pathogenic Rhodobacteraceae...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Paracoccus; Rickettsia amblyommii; Amblyomma; Ixodidae ticks.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572012000500021

Bacteria associated with Amblyomma cajennense tick eggs
Provedor de dados: 74
Autores: Machado-Ferreira,Erik; Vizzoni,Vinicius Figueiredo; Piesman,Joseph; Gazeta,Gilberto Salles; Soares,Carlos Augusto Gomes.
Abstract 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,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Amblyomma cajennense; Tick eggs bacteria; Staphylococcus; Ixodidae.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572015000400477

Physiological traits of the symbiotic bacterium Teredinibacter turnerae isolated from the mangrove shipworm Neoteredo reynei
Provedor de dados: 74
Autores: Trindade-Silva,Amaro E.; Machado-Ferreira,Erik; Senra,Marcus V.X.; Vizzoni,Vinicius F.; Yparraguirre,Luciana A.; Leoncini,Orilio; Soares,Carlos A.G.
Nutrition in the Teredinidae family of wood-boring mollusks is sustained by cellulolytic/nitrogen fixing symbiotic bacteria of the Teredinibacter clade. The mangrove Teredinidae Neoteredo reynei is popularly used in the treatment of infectious diseases in the north of Brazil. In the present work, the symbionts of N. reynei, which are strictly confined to the host's gills, were conclusively identified as Teredinibacter turnerae. Symbiont variants obtained in vitro were able to grow using casein as the sole carbon/nitrogen source and under reduced concentrations of NaCl. Furthermore, cellulose consumption in T. turnerae was clearly reduced under low salt concentrations. As a point of interest, we hereby report first hand that T. turnerae in fact exerts...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Teredinibacter turnerae; Cellulolytic and nitrogen fixing bacteria; Antibiotic activity; Mangrove shipworm symbiont; Neoteredo reynei.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572009000300022