Leishmaniasis in Brazil I: observations on enzootic rodent leishmaniasis - incrimination of Lutzomya flaviscutellata (Mangabeira) as the vector in the lower amazonian basin

xmlui.dri2xhtml.METS-1.0.item-date
1968xmlui.mirage2.itemSummaryView.MetaData
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http://patua.iec.gov.br/handle/iec/833xmlui.dri2xhtml.METS-1.0.item-author
Lainson, Ralph
Shaw, Jeffrey Jon
xmlui.dri2xhtml.METS-1.0.item-abstract
During observations on a foros of enzootic leishmaniasis of rodents in the Utinga
Forest, Belém, Pará, Brazil, active infections were encountered in 16 (17.98%) of 89
Oryzomys capito examined.
Cutaneous lesions were restricted to the tails of these animaIs, and spontaneous
recovery leaves characteristic scarring. Taking such scars into account, it is estimated
thb.t as manyas 70% ofthe Oryzomys population mar experience infection at some time
during their lives.
Leishmania were isolated from 3 specimens of Proechimys guyannensis captured in
the same forest area. ln addition to obvious lesions on the tail and foot, parasites were
isolated from apparently normal ear tissue. The strains of Leishmania from Oryzomys
and Proechimys appear to be identical.
lnsect traps were baited with Oryzomys, Proechimys and other rodents. During a
period of 4 months they, captured 2- ~7 4 phlebotomine sandflies, of which 2,731 were
Lutzomyia ftaviscutellata[ Mangabeircy
ln contrast, on1y 5 specimens (0.690;0) of Lu. ftaviscutellata were encountered
among 724 sandflies caught of human bait during the same period, in the same area.
Leptomonads were found in 8 of 2,706 Lu. ftaviscutellata dissected (0.29%).
lnoculation of these flagellates into hamsters produced typical leishmanial lesions in
6 cases.
We conclude that Lutzomyiaftaviscutellata is the major vector ofthe Leishmania sp.,
among Oryzomys and Proechimys in the Utinga Forest area ofthe Lower Amazon Region.
Similarities are noted between this parasite of Brazilian rodents and Leishmania
mexicana of rodents and man in Central America.
xmlui.dri2xhtml.METS-1.0.item-citation
LAINSON, Ralph; SHAW, Jeffrey Jon. Leishmaniasis in Brazil I: observations on enzootic rodent leishmaniasis - incrimination of Lutzomya flaviscutellata (Mangabeira) as the vector in the lower amazonian basin. Transactions of the Royal Society of Tropical Medicine and Hygiene, v. 62, n. 3, p. 385-395, 1968.xmlui.dri2xhtml.METS-1.0.item-decsPrimary
Leishmaniose Cutânea / veterinariaPsychodidae / patogenicidade
Ratos