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1.
Rev. Soc. Bras. Med. Trop ; 52: e20190159, 2019. graf
Article in English | LILACS | ID: biblio-1041542

ABSTRACT

Abstract INTRODUCTION: The lack of highly-productive Nyssorhynchus darlingi laboratory colonies limits some studies. We report the first well-established laboratory colony of Ny. darlingi in Brazil. METHODS: Mosquitoes were collected from Porto Velho and were reared at the Laboratory of Fiocruz/RO. After induced mating by light stimulation in the F1 to F6, the subsequent generations were free mating. Larvae were reared in distilled water and fed daily until pupation. RESULTS: In 11 generations, the colony produced a high number of pupae after the F5 generation. CONCLUSIONS: These results demonstrate the potential for permanently establishing Ny. darlingi colonies for research purposes in Brazil.


Subject(s)
Animals , Mosquito Vectors/growth & development , Anopheles/growth & development , Oviposition , Reproduction , Brazil , Mosquito Vectors/physiology , Malaria , Anopheles/physiology
2.
Rev. bras. epidemiol ; 9(2): 186-192, jun. 2006.
Article in Portuguese | LILACS | ID: lil-436830

ABSTRACT

A Vila de Pitinga, Presidente Figueiredo/AM, é uma área de exploração de minérios e endêmica para leishmaniose tegumentar americana (LTA). A vila é a sede administrativa e local de moradia de seus funcionários. O comportamento epidemiológico da endemia, avaliado para o período de 2000 a 2004, foi relacionado com as medidas de controle adotadas para reduzir a incidência da doença na área e comparado com o registrado para o município e o Estado do Amazonas. A maior proporção dos casos detectados no período ocorreu no gênero masculino, com atividades laborais de contato com a floresta. O declínio na incidência de casos de LTA na área do estudo, não foi observado como ocorrido no Município e Estado e foi considerado resultante das medidas de controle para a doença, aplicadas na área.


The village of Pitinga, Presidente Figueiredo, AM, is a mining area and endemic for American Cutaneous Leishmaniasis (ACL). The village is the administrative office of the mine and where mining workers live. This study presents the profile of ACL in the 2000-2004 period. The highest prevalence of ACL occurs in male individuals with forest-related activities. The reduction in the number of ACL cases in the study area was not observed in the municipality and the state, a fact probably related to the disease control measures put into practice in the area.


Subject(s)
Humans , Male , Leishmaniasis, Diffuse Cutaneous/epidemiology , Leishmaniasis, Diffuse Cutaneous/prevention & control
3.
Acta amaz ; 34(2): 201-207, 2004. tab, graf
Article in English | LILACS | ID: lil-394080

ABSTRACT

Mansonella ozzardi é transmitida por dois grupos distintos de insetos, Ceratopogonidae e Simuliidae. No Brasil, os simulídeos são os vetores dessa filariose. Neste trabalho, o objetivo foi determinar a sazonalidade, a paridade e a taxa de infecção parasitária de Cerqueirellum argentiscutum. O experimento foi realizado na comunidade Porto do Japão, Baixo rio Solimões, Amazonas, Brasil. Os simulídeos foram mais abundantes no período de chuva (dezembro a maio). Em todos os meses de coletas o número de paríparas foi maior. A taxa mensal de picada (TMP1 123742.00, TMP2 86701.50) foi elevada, já a taxa de infecção parasitária (TIP1 0.06, TIP2 0.08) e o potencial de transmissão anual (PTA 7.25) foram considerados baixos.


Subject(s)
Simuliidae , Amazonian Ecosystem , Mansonella/growth & development , Nematoda
4.
Cad. saúde pública ; 18(3): 823-832, maio-jun. 2002.
Article in Portuguese | LILACS | ID: lil-330925

ABSTRACT

Studies on the vertical stratification of phlebotomine sandfly fauna were conducted in a non-flooded primary forest at a Tropical Forest Experimental Station of the National Institute of Amazonian Research from October 1998 to March 1999. CDC light traps were placed at one, 10, and 20 meters above ground. A total of 2,859 sandflies were captured, belonging to the Lutzomyia (99.93) and Brumtomyia (0.07) genera, represented by 38 species. In the Lutzomyia gender, the most frequent sub-gender was Nyssomyia (43.4), followed by Psychodopygus (22.8). Lutzomyia umbratilis, L. anduzei, L. rorotaensis, L. trichopyga, and L. olmeca nociva predominated at one meter above ground, while L. davisi, L. infraspinosa, L. umbratilis, L. trichopyga, and L. anduzei predominated at 10 meters. L. anduzei, L. tuberculata, L. dendrophyla, and L. dreisbachi were the most abundant species at 20 meters. L. umbratilis, which appeared at all three levels of vertical stratification, has great epidemic significance as a vector of Leishmania (Viannia) guyanensis.


Subject(s)
Animals , Male , Female , Insect Vectors , Phlebotomus , Brazil , Statistics, Nonparametric , Trees
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