Amostragem por larva-única na vigilância de Aedes aegypti

Bracco, José Eduardo; Fabbro, Amaury Lélis Dal

doi:10.1590/s0034-89101995000200011

Cited by 2 publications

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“…In another study located in what the authors call "a city with low levels of infestation", an average of 66 culicid larvae (of Aedes and Culex genera) per domestic container, counting only those containers that housed larvae. 1 In one area of New Orleans in the United States with high infestation levels of Aedes aegypti, a total of 24,609 Aedes aegypti and Culex quinquefasciatus larvae were collected in 107 domestic containers 10 or an average of 158 larvae per container.…”

Section: Resultsmentioning

confidence: 99%

Competência de peixes como predadores de larvas de Aedes aegypti, em condições de laboratório

et al. 2007

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OBJECTIVE:To evaluate the effi cacy of fi sh as predators of the Aedes aegypti larvae in laboratory conditions. METHODS:The male and female of fi ve different fi sh were included in the experiment. The tests to measure their consumption ability lasted fi ve weeks for each species. Each trial involved four test tanks and four control tanks. Two control tanks contained just one fi sh, and the other two just larvae. Each of the test tanks contained one fi sh and the larvae. During the fi rst week, 100 larvae were placed in the tank, with an additional 100 added every week, up to a maximum daily amount of 500 larvae. The length and weight of the fi sh were measured at the beginning and end of every week. RESULTS:A total of 369,000 larvae were used. The Trichogaster trichopteros was the only species in which both sexes ate 100% of the available larvae. The Betta splendens failed to eat only 15 larvae. The male Poecilia reticulate showed a strong capacity for larvae eating, compared with the female of the same species. In terms of weight and size, the Betta splendens proved capable of eating 523 larvae per gram of weight per day. CONCLUSIONS:The female and male Trichogaster trichopteros and Astyanax fasciatus, and the female Betta splendens and Poecilia sphenops proved to be the most effective predators of the Aedes aegypti larvae. And although the male Poecilia sphenops and female Poecilia reticulata were less effective, they were also capable of eradicating the total number of Aedes aegypti larvae that could appear over 24 hours in a breeding site under natural conditions. The male Poecilia reticulata, however, proved incapable of doing so.

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Section: Resultsmentioning

confidence: 99%

Competência de peixes como predadores de larvas de Aedes aegypti, em condições de laboratório

et al. 2007

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Determinação do potencial larvófago de Poecilia reticulata em condições domésticas de controle biológico

Pereira¹,

Oliveira

2014

Cad. saúde colet.

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Cad. Saúde Colet., 2014, Rio de Janeiro, 22 (3): 241-5 ResumoConfigurada como um dos mais importantes problemas de saúde pública do mundo, a dengue atinge especialmente países com clima tropical, como o Brasil. O controle biológico por meio da utilização de peixes larvófagos aparece como alternativa para reduzir os índices de infestação do vetor da dengue. O presente trabalho objetiva avaliar e descrever condições em que peixes da espécie Poecilia reticulata possam ser utilizados como controladores biológicos de larvas de Aedes aegypti em ambiente doméstico. Para tanto, o potencial larvófago diário (observação direta) de diferentes grupos de P. reticulata foi calculado considerando-se a influência do sexo e do tamanho dos espécimes empregados. Os resultados dos ensaios revelaram que o potencial larvófago de P. reticulata varia com o sexo. Observou-se também que a capacidade controladora do grupo composto apenas por fêmeas foi cerca de duas vezes maior quando comparada à dos machos da espécie.Palavras-chave: dengue; saúde pública; aedes aegypti. AbstractConfigured as an important public health problem in the world, the dengue fever affects tropical countries, like Brazil. Biological control through the use of larvivorous fish appears as an alternative to reduce the infestation rates of the dengue vector. This work aims to evaluate and describe conditions under which Poecilia reticulata fishes can be used as biological controllers of Aedes aegypti in a domestic environment. Thus, the daily larvivorous potential (direct observation) of different groups of P. reticulata was calculated, considering the influence of sex and size of the used specimens. The test results revealed that P. reticulata larvivorous potential ranges with sex, and found that the ability of the group composed only of females was about twice as high compared to that of males of the species.

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Amostragem por larva-única na vigilância de Aedes aegypti

Cited by 2 publications

References 1 publication

Competência de peixes como predadores de larvas de Aedes aegypti, em condições de laboratório

Competência de peixes como predadores de larvas de Aedes aegypti, em condições de laboratório

Determinação do potencial larvófago de Poecilia reticulata em condições domésticas de controle biológico

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