| feeding sources and trypanosome infection index of rhodnius pallescens in a chagas disease endemic area of amador county, panama. | the sylvatic triatomine rhodnius pallescens is considered to be the most important and widespread vector of trypanosoma cruzi and trypanosoma rangeli in panama. however, its behavior and biological characteristics have only been partially investigated. thus, to achieve sustainable and efficient control over chagas disease in panama, a better understanding of the ecology and biology of r. pallescens is essential. in this study we evaluated r. pallescens host feeding sources using a dot-blot assay ... | 2008 | 18488091 |
| association of anthropogenic land use change and increased abundance of the chagas disease vector rhodnius pallescens in a rural landscape of panama. | anthropogenic disturbance is associated with increased vector-borne infectious disease transmission in wildlife, domestic animals, and humans. the objective of this study was to evaluate how disturbance of a tropical forest landscape impacts abundance of the triatomine bug rhodnius pallescens, a vector of chagas disease, in the region of the panama canal in panama. rhodnius pallescens was collected (n = 1,186) from its primary habitat, the palm attalea butyracea, in five habitat types reflecting ... | 2011 | 21212205 |
| chromosome variability in the chagas disease vector rhodnius pallescens (hemiptera, reduviidae, rhodniini). | rhodnius pallescens is the main vector of trypanosoma cruzi in panama and one of the most relevant secondary vectors in colombia. despite the importance of this species, there is limited knowledge about the genetic variability along its geographical distribution. in order to evaluate the degree of karyotype variability we analyzed the meiotic behavior and banding pattern of the chromosomes of 112 males of r. pallescens coming from different regions of colombia and panama. using the c-banding tec ... | 2008 | 18425268 |
| molecular characterisation of trypanosoma rangeli strains isolated from rhodnius ecuadoriensis in peru, r. colombiensis in colombia and r. pallescens in panama, supports a co-evolutionary association between parasites and vectors. | we present data on the molecular characterisation of strains of trypanosoma rangeli isolated from naturally infected rhodnius ecuadoriensis in peru, from rhodnius colombiensis, rhodnius pallescens and rhodnius prolixus in colombia, and from rhodnius pallescens in panama. strain characterisation involved a duplex pcr with s35/s36/kp1l primers. mini-exon gene analysis was also carried out using trint-1/trint-2 oligonucleotides. kdna and mini-exon amplification indicated dimorphism within both dna ... | 2005 | 15639744 |
| host feeding profiles of rhodnius pallescens (hemiptera: reduviidae) in rural villages of central panama. | rhodnius pallescens, reported to be the principal vector of chagas' disease in central panama, has been shown to feed on opossums, anteaters, sloths, rodents, birds and, rarely, lizards in sylvatic habitats in this country; however, the extent of its anthropophagic affinities in rural areas has never been determined. the host selections of 1,340 r. pallescens from domestic and peridomestic habitats of three panamanian villages were determined by microcapillary precipitin tests. slightly more tha ... | 1981 | 6782901 |
| human trypanosomiasis in the eastern region of the panama province: new endemic areas for chagas disease. | the epidemiology of chagas disease was studied in five rural communities located in the eastern region of the panama province. serological tests for trypanosoma cruzi infection revealed a prevalence of 5.88% (12/204). hemocultures coupled with polymerase chain reaction (pcr) analysis showed a trypanosoma rangeli infection rate of 5.88% (12/204). an overall trypanosome infection index of 11.76% (24/204) was detected in this population. a total of 121 triatomine specimens were collected in domesti ... | 2010 | 20348502 |
| predominance of trypanosoma cruzi i among panamanian sylvatic isolates. | trypanosoma cruzi is throughout panama, which is in agreement with the widespread of the sylvatic vectors implicated in the transmission. eco-epidemiological changes in some regions of the country have led to a successful dissemination of the palm-tree attalea butyracea and a possible adaptation of the primary vector of chagas' disease to human settlements. these facts might increase both vector-human contact and human infection with different potentials t. cruzi genotypes and make therefore nec ... | 2007 | 17288977 |