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BIBTEX RIS

Natural Leishmania ( Viannia ) spp. infections in phlebotomine sand flies (Diptera: Psychodidae) from the Brazilian Amazon region reveal new putative transmission cycles of American cutaneous leishmaniasis

2016; EDP Sciences; Volume: 23; Linguagem: Inglês

10.1051/parasite/2016022

ISSN

1776-1042

Autores

Adelson Alcimar Almeida de Souza, Thiago Vasconcelos dos Santos, Yara Lúcia Lins Jennings, Edna Aoba Yassui Ishikawa, Iorlando da Rocha Barata, Maria das Graças Soares Silva, José Aprígio Nunes Lima, Jeffrey Jon Shaw, R. Lainson, Fernando Tobias Sílveira,

Tópico(s)

History of Medicine and Tropical Health

Resumo

In Amazonian Brazil the etiological agents of American cutaneous leishmaniasis (ACL) belong to at least seven Leishmania species but little is known about the putative phlebotomine sand fly vectors in different biomes. In 2002–2003 a survey of the phlebotomine fauna was undertaken in the "Floresta Nacional do Tapajós", Belterra municipality, in the lower Amazon region, western Pará State, Brazil, where we recently confirmed the presence of a putative hybrid parasite, L. (V.) guyanensis × L. (V.) shawi shawi. Sand flies were collected from Centers for Disease Control (CDC) light traps, Shannon traps and by aspiration on tree bases. Females were dissected and attempts to isolate any flagellate infections were made by inoculating homogenized midguts into Difco B45 medium. Isolates were characterized by monoclonal antibodies and isoenzyme electrophoresis. A total of 9,704 sand flies, belonging to 68 species or subspecies, were collected. Infections were found in the following sand flies: L. (V.) naiffi with Psychodopygus hirsutus hirsutus (1) and Ps. davisi (2); and L. (V.) shawi shawi with Nyssomyia whitmani (3) and Lutzomyia gomezi (1). These results provide strong evidence of new putative transmission cycles for L. (V.) naiffi and L. (V.) s. shawi.

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