On Leishmania enriettii and Other Enigmatic Leishmania Species of the Neotropics

Lainson, Ralph

doi:10.1590/s0074-02761997000300014

Cited by 45 publications

(39 citation statements)

References 31 publications

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“…Further, this species has been suspected of being a vector of Leishmania (Leishmania) enriettii Muniz & Medina, 1948, a parasite of the guineapig, on the outskirts of Curitiba city in the Paraná state, and has been shown to be susceptible to experimental infection by this agent captured in the same region, but the flagellates seem to have failed to produce infection when inoculated into clean laboratory guinea-pigs (Luz et al 1967). The infection of a guinea-pig was also identified on a farm in Capão Bonito municipality (Machado et al 1994;Lainson 1997) situated very close to the PEI. Thus perhaps, if more females of Pi.…”

Section: Discussionmentioning

confidence: 94%

Phlebotomines (Diptera, Psychodidae) in the Ribeira Valley Speleological Province - 1. Parque Estadual Intervales, state of São Paulo, Brazil

Galati

Marassá

Gonçalves-Andrade³

et al. 2010

Rev. Bras. entomol.

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ABSTRACT. Phlebotomines (Diptera, Psychodidae) in the Ribeira Valley Speleological Province -1. Parque Estadual Intervales (PEI), São Paulo state, Brazil. The identification of the sandfly fauna and investigation of some ecological aspects of its populations in areas frequented by tourists of the PEI, an Atlantic forest reserve with many caves, were the objective of this study. Captures were undertaken monthly from January 2001 to December 2002, with automatic light traps installed in 13 ecotopes, including caves, forests, domiciliary and peridomiciliary environments, and by aspiration in armadillo burrows. Additionally, although not at regular intervals, Shannon traps were installed in forests and anthropic environments, aspirations were made on cave walls, among roots and fallen leaves, and some insects were captured while biting researchers. A total of 891 sandflies belonging to 21 species were captured. Six hundred specimens representing 19 species were captured with light traps, 215 in anthropic (2.24 insects/trap) and 385 in extra-domiciliary (1.46 insects/trap) environments. Brumptomyia troglodytes was the most abundant species (the Standardised Index of Species Abundance = 0.705). Pintomyia monticola predominated in the Shannon traps and showed anthropophilic and diurnal activity. Psathyromyia pascalei predominated in the aspirations; the largest number being in armadillo burrows. Eleven species were captured in caves; although some might be troglophiles, the majority used these ecotopes as resting places. Nyssomyia intermedia, Nyssomyia neivai and Migonemyia migonei, implicated in the transmission of cutaneous leishmaniasis in the Southeastern Brazilian region, were all found, though in such low densities as to suggest minimal risk of the disease in the PEI. KEYWORDS. Atlantic forest; cave; leishmaniasis; vectors.RESUMO. Phlebotominae (Diptera, Psychodidae) na Província Espeleológica do Vale do Ribeira -1. Parque Estadual Intervales (PEI), estado de São Paulo, Brasil. A identificação da fauna flebotomínea e de alguns aspectos ecológicos de suas populações em áreas freqüentadas por turistas no PEI, situado em reserva de mata Atlântica, constituem-se nos objetivos deste estudo. As capturas foram mensais de janeiro/2001 a dezembro/2002, com armadilhas automáticas luminosas em 13 ecótopos, incluindo cavernas, matas e peridomicílio e aspiração em tocas de tatus. Sem intervalos regulares, foram realizadas capturas com armadilhas de Shannon na mata e ambientes antrópicos, aspiração em paredes de cavernas e entre raízes e folhedo e em membros da equipe quando picados por flebotomíneos. No total foram capturados 891 flebotomíneos pertencentes a 21 espécies. Com as armadilhas automáticas luminosas capturou-se 19 espécies e 600 espécimes, 215 em ambiente antrópico (2,24 insetos/armadilha) e 385 em ambiente natural (1,46 insetos/armadilha). Brumptomyia troglodytes foi a mais abundante, com o índice de abundância das espécies padronizado = 0,705. Pintomyia monticola predominou nas armadilhas de Shannon, mostrando-se...

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Section: Discussionmentioning

confidence: 94%

Phlebotomines (Diptera, Psychodidae) in the Ribeira Valley Speleological Province - 1. Parque Estadual Intervales, state of São Paulo, Brazil

Galati

Marassá

Gonçalves-Andrade³

et al. 2010

Rev. Bras. entomol.

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“…Lainson suggested that based on the arboreal habits of its known host Coendou, the vectors would be found on large tree trunks or in their resting places in hollow trees. 162 However, although this parasite was isolated from the vector Lu. furcata that was collected in a hollow tree in which an infected porcupines was living, 92 there are doubts regarding this host based on etho-ecologic and physiologic considerations of the role of primary vector for this parasite.…”

Section: Leishmania (L) Deanei Reservoir Hosts Deane and Others Fimentioning

confidence: 99%

“…103 In that case, phlebotomine sand flies should be regarded as the primary hosts of Leishmania species and mammals may act as secondary hosts that provide a source of parasites for these insects. 162 Humans may play a dual role in the GEC both by being part of the pathogenic complexes, mostly as occasional reservoir hosts, and by directly or indirectly transforming these cycles.…”

Section: Role Of Humans In the Pathogenic Complexes Of The Gecmentioning

confidence: 99%

Ecology of the Leishmania Species in the Guianan Ecoregion Complex

Rotureau

2006

The American Journal of Tropical Medicine and Hygiene

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Abstract. In the Guianan ecoregion complex, at least seven Leishmania species belonging to both the L. (Leishmania) Saf' janova, 1982 and L. (Viannia) Lainson and Shaw, 1987 sub-genera are causative agents of American visceral leishmaniasis, mucocutaneous leishmaniasis, and cutaneous leishmaniases, including localized and diffuse forms. They are mostly sylvatic species subjugated to their own specific Lutzomyia sand fly vectors and to particular wild mammalian reservoir hosts of the dense rain forest. Originally implicated strictly in wild zoonoses and developing in forested ecotopes, Leishmania show a particular adaptive plasticity to face environmental modifications following deforestation and anthropization. This review presents the different pathogenic complexes of these parasites, emphasizes their implication in human diseases, and considers the influence of humans on their ecology.

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“…n the Amazon Region of Brazil the situation regarding cutaneous leishmaniasis of man is complicated by the presence of several different species of Leishmania circulating in enzootics involving a wide variety of wild mammalian hosts and different phlebotomine sandfly vectors , 1997Lainson etal, 1994;Silveira et al, 1991a, b;Souza et al, 1996) Silveira et al, 1987;L. (V.) shawi Lainson et al, 1989;L.…”

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confidence: 99%

An outbreak of cutaneous leishmaniasis among soldiers in Belém, Pará State, Brazil, caused byLeishmania (Viannia) lindenbergin. sp.

et al. 2002

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Summary:Eight cases of cutaneous leishmaniasis are recorded among soldiers of the Brazilian Forest Infantry stationed in Belem, State of Para, north of Brazil. The infections, all acquired during manoeuvres in nearby degraded primary forest, are attributed to a new member of the subgenus Viannia, Leishmania (V.) lindenbergi n, sp. A further infection by this parasite was encountered in a woman, who lived very close to the same piece of forest. The new parasite has been characterised and differentiated from other known species of the subgenus Viannia following the combined use of enzyme electrophoresis and monoclonal antibodies techniques. The eco-epidemiology of L. (V.) lindenbergi is discussed: by far the most abundant anthropophilic sandfly in the type locality was identified as Lutzomyia (Nyssomyia) anntunesi ICoutinho), and this remains high on the list of possible vectors.

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On Leishmania enriettii and Other Enigmatic Leishmania Species of the Neotropics

Cited by 45 publications

References 31 publications

Phlebotomines (Diptera, Psychodidae) in the Ribeira Valley Speleological Province - 1. Parque Estadual Intervales, state of São Paulo, Brazil

Phlebotomines (Diptera, Psychodidae) in the Ribeira Valley Speleological Province - 1. Parque Estadual Intervales, state of São Paulo, Brazil

Ecology of the Leishmania Species in the Guianan Ecoregion Complex

An outbreak of cutaneous leishmaniasis among soldiers in Belém, Pará State, Brazil, caused byLeishmania (Viannia) lindenbergin. sp.

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