Banca de DEFESA: STANLEY NOBRE LIMA

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
DISCENTE : STANLEY NOBRE LIMA
DATA : 19/04/2018
HORA: 09:00
LOCAL: Sala 03
TÍTULO:

Relationship of the altitudinal gradient in tick parasitism in wild birds associated with Rhipicephalus spp infection in the Itatiaia National Park, RJ

PALAVRAS-CHAVES:

Altitudinal gradient, Ixodidae, Ixodes sp. Atlantic forest, rickettsioses

PÁGINAS: 50
GRANDE ÁREA: Ciências Agrárias
ÁREA: Medicina Veterinária
RESUMO:

Ticks are hematophagous ectoparasites in the post-embryonic stages of life that parasitize a wide variety of hosts, including amphibian, reptile, bird and mammal species, and are distributed across all continents. Wild birds have an important role in the epidemiology of tick-borne diseases, serving as reservoirs for some tick-borne diseases and in the maintenance and dispersion of ticks. The present study evaluated the parasitism by ticks in wild birds collected in the Itatiaia National Park, RJ, in a large Atlantic Forest area in the states of Rio de Janeiro and Minas Gerais, Brazil, along an altitudinal gradient of 600 to 2000 meters five sampling points. In addition, this study presence of bacteria examines the ticks for the presence of infectious agents. From March 2016 to December 2017, 501 birds were captured representing 23 families and 85 species; of these 144 (prevalence = 28.7%), were parasitized by ticks in the stages of larvae and nymphs. Tick DNA was individually extracted and tested using polymerase chain reaction (PCR) techniques to amplify the 16S and 12S rDNA genes and, after sequencing, the following species were identified along the altitudinal gradient: Amblyomma longirostre , Amblyomma calcaratum, Amblyomma parkeri Amblyoma sculptum, Amblyomma aureolatum Amblyoma ovale, Amblyomma sp., Amblyomma haplotype Nazaré and Ixodes spp .. The following genes were used to investigate the presence of rickettsial genes: gltA, htrA, ompA and ompB, which revealed the presence of Rickettsia amblyommii in A. longirostre, and Rickettsia parkeri in the species Amblyomma parkeri and Amblyomma haplotipo Nazaré and Amblyomma sp. and Rickettsia rhipicephali in Amblyomma haplotype Nazaré and in Amblyomma parkeri. In the species Ixodes sp. was recorded only at altitudes above 1200 meters and no tick of this species presented detection for Rickettsia

MEMBROS DA BANCA:
Presidente - 242.424.547-91 - JOAO LUIZ HORACIO FACCINI - UFRRJ
Interno - 1354903 - DOUGLAS MCINTOSH
Externo à Instituição - MARCUS SANDES PIRES - UFF