The retained capacity of Lutzomya longipalpis (Lutz &amp; Neiva) to transmit Leishmania chagasi (Cunha &amp; Chagas) after eight years (64 generations in a closed laboratory colony

Gonçalves, M. de N. A; Ryan, L.; Lainson, Ralph; Shaw, Jeffrey Jon

doi:10.1590/s0074-02761985000300010

Cited by 7 publications

(3 citation statements)

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“…chagasi, from an infected to a healthy mammal, by the bite of Lu. longipalpis, were obtained in the laboratory (Gonçalves et al 1985, Ward et al 1988a, Lainson et al 1990). Even so, it is important to emphasize that artificial procedures were employed in some of these successful experiments.…”

Section: Discussionmentioning

confidence: 99%

Ecological interactions of visceral leishmaniasis in the state of Bahia, Brazil

Sherlock

1996

Mem. Inst. Oswaldo Cruz

174

113

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Section: Discussionmentioning

confidence: 99%

Ecological interactions of visceral leishmaniasis in the state of Bahia, Brazil

Sherlock

1996

Mem. Inst. Oswaldo Cruz

174

113

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“…Its distribution coincides with that of leishmaniasis throughout Latin America, 109 and experimental transmission to hamsters was demonstrated, 110 even with an eight-year-old vector colony. 111 This vector may exist as a species complex with different genetic profiles and biologic properties. [112][113][114][115][116][117] Lutzomyia longipalpis is typically a peri-domestic phlebotomine sand fly in dry regions.…”

Section: Ecology Of Leishmania Species In 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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“…Estimates of the infection rate in phlebotomines based on dissection of the insects are frequently carried out. Infection rates obtained by this method range from 0 to 9% 1,9,11,19 but are usually in the region of 0.2% 9,10,14,17,18 .…”

Section: Introductionmentioning

confidence: 97%

Natural infection of phlebotomines (Diptera: Psychodidae) in a visceral-leishmaniasis focus in Mato Grosso do Sul, Brazil

Nascimento

Paiva

Malafronte

et al. 2007

Rev. Inst. Med. trop. S. Paulo

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SUMMARYThe main purpose of this study was to investigate natural infection by Leishmania in phlebotomine females in a visceralleishmaniasis focus in Antonio João county in Mato Grosso do Sul State, Brazil. Between June and October 2003, the digestive tracts of 81 females captured in Aldeia Campestre, Aldeia Marangatu and Povoado Campestre were dissected. The females were separated by species, location, area and date of capture into 13 groups and kept in ethanol 70%. To identify the Leishmania species using the PCR technique, amplifications of the ribosomal-DNA (rDNA) and mini-exon genes were analyzed. Of the 81 specimens, 77 (95%) were Lutzomyia longipalpis, making this the most common species; only one specimen of each of the species Brumptomyia avellari, Evandromyia cortelezzii, Evandromyia lenti and Nyssomyia whitmani was found. Trypanosomatids were identified in eight of the nine groups of Lutzomyia longipalpis (10.39%) one group from Aldeia Campestre, one from Aldeia Marangatu and six from Povoado Campestre; of the eight groups, one from Aldeia Marangatu and another, with promastigotes forms also confirmed by dissection (1.23%) from Povoado Campestre, were identified by PCR as Leishmania chagasi (2.6%). The other groups gave negative results. These findings indicate that there is a high risk of leishmaniasis transmission in this area.

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The retained capacity of Lutzomya longipalpis (Lutz & Neiva) to transmit Leishmania chagasi (Cunha & Chagas) after eight years (64 generations in a closed laboratory colony

Cited by 7 publications

References 0 publications

Ecological interactions of visceral leishmaniasis in the state of Bahia, Brazil

Ecological interactions of visceral leishmaniasis in the state of Bahia, Brazil

Ecology of the Leishmania Species in the Guianan Ecoregion Complex

Natural infection of phlebotomines (Diptera: Psychodidae) in a visceral-leishmaniasis focus in Mato Grosso do Sul, Brazil

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