Costs and effectiveness of application of Poecilia reticulata (guppy) and temephos in anopheline mosquito control in river basins below the major dams of Sri Lanka

Kusumawathie, P.H.D.; Wickremasinghe, A.R.; Karunaweera, Nadira D.; Wijeyaratne, M.J.S.

doi:10.1016/j.trstmh.2008.03.013

Cited by 19 publications

(63 citation statements)

References 5 publications

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“…Frente ao cenário atual de controle da dengue, caracterizado pelo controle químico dos focos, a utilização de metodologias e estratégias alternativas de eliminação do vetor, com o emprego de predadores naturais das formas imaturas de A. aegypti, justifica-se do ponto de vista econômico e ambiental, a exemplo de várias experiências bem-sucedidas e divulgadas na literatura científica 8,[11][12][13] . Sobretudo, é recomendável que, em condições de controle doméstico, os aquários sejam monitorados, de modo que os peixes sejam alimentados com ração, sem exagero.…”

Section: Resultsunclassified

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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Section: Resultsunclassified

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

Pereira¹,

Oliveira

2014

Cad. saúde colet.

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“…To control mosquito larvae in these habitats, in addition to spraying of Abate, introduction of lavivorous guppy species, Poecilia reticulata, has been an efficacious method (Kusumawathie et al, 2003). It has been shown that application of P. reticulata was 2.67 times less costly than spaying Abate (Kusumawathie et al, 2008). When applying Abate all the aquatic systems are treated, irrespective of the presence or absence of larvae.…”

Section: Discussionmentioning

confidence: 99%

“…Thus, the majority of pools are sprayed unnecessarily and this is not only a waste of chemicals and may lead to development of insecticide resistance in mosquitoes but also it is harmful to non-target organisms. Use of fish is more effective and less costly, but also it encourages community involvement (Kusumawathie et al, 2008). It is important that the health authorities give due considerations to the use of environmentally friendly methods in routine mosquito control programmes.…”

Section: Discussionmentioning

confidence: 99%

Effect of mosquito larvicide Abate® on the developmental stages of the Asian common toad, <i>Bufo melanostictus</i>

Harischandra¹,

Karunaratne²,

Rajakaruna

2012

Ceylon J. Sci. (Biol. Sci.)

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Exposure to chemical contaminants has been identified as a key factor causing widespread mortalities and malformations in amphibians world over. We examined the effect of exposure to commonly used mosquito larvicide, Abate ® which has temephos as the active ingredient, on the Asian common toad, Bufo melanostictus, under laboratory conditions. The LC 50 values of 16.56 ppm and 17.03 ppm were obtained when one-day old tadpoles (Gosner stage 21-24) and one-week old tadpoles (Gosner stage 25) were exposed to Abate for two weeks, respectively. Chronic exposure to Abate at effective field concentrations used in mosquito control programmes (WHO recommended doses) had a significant effect on the survival of egg stage (Gosner stages 12-14), and one day old tadpoles but not on one week old tadpoles. Tadpoles exposed to Abate grew larger and had a longer larval period and the difference in the duration of larval period was statistically significant. Exposed tadpoles also developed malformations such as rotation of bones, micromelia of the limb bones, hemimelia of femur, skin webbing in the hind limbs and ectrodactyly. Edemas were also observed in the exposed tadpoles. Exposure to all concentrations of Abate had a significant effect on the survival, growth and development of malformations in the early tadpole stages compared to the control group. The reduction in survival was not significant when older tadpoles of one week post-hatch were exposed, although they developed malformations and their larval period was prolonged significantly compared to the control group. Thus, the study shows that Abate is lethal to the early stages of the Asian common toad but the toxicity decreased as the tadpoles grow older.

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“…In one study, control and intervention groups were not matched at baseline (intervention group higher). However, substantively lower values were detected in the intervention arm at follow-up (one year) (Kusumawathie 2008b). …”

Section: Summary Of Findings For the Main Comparisonmentioning

confidence: 99%

“… 9 No serious indirectness: two studies introduced larvivorous fish into riverbed pools below dams in Sri Lanka (Kusumawathie 2008a; Kusumawathie 2008b). The longest follow-up still showed benefit at one year post-intervention in one study.…”

Section: Summary Of Findings For the Main Comparisonmentioning

confidence: 99%

Larvivorous fish for preventing malaria transmission

Walshe

Garner

Adeel

et al. 2017

Cochrane Database of Systematic Reviews

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Background Adult female Anopheles mosquitoes can transmit Plasmodium parasites that cause malaria. Some fish species eat mosquito larvae and pupae. In disease control policy documents, the World Health Organization (WHO) includes biological control of malaria vectors by stocking ponds, rivers, and water collections near where people live with larvivorous fish to reduce Plasmodium parasite transmission. In the past, the Global Fund has financed larvivorous fish programmes in some countries, and, with increasing efforts in eradication of malaria, policymakers may return to this option. Therefore, we assessed the evidence base for larvivorous fish programmes in malaria control. Objectives To evaluate whether introducing larvivorous fish to anopheline larval habitats impacts Plasmodium parasite transmission. We also sought to summarize studies that evaluated whether introducing larvivorous fish influences the density and presence of Anopheles larvae and pupae in water sources. Search methods We searched the Cochrane Infectious Diseases Group Specialized Register; the Cochrane Central Register of Controlled Trials (CENTRAL), published in the Cochrane Library; MEDLINE (PubMed); Embase (Ovid); CABS Abstracts; LILACS; and the meta Register of Controlled Trials ( m RCT) up to 6 July 2017. We checked the reference lists of all studies identified by the search. We examined references listed in review articles and previously compiled bibliographies to look for eligible studies. Also we contacted researchers in the field and the authors of studies that met the inclusion criteria for additional information regarding potential studies for inclusion and ongoing studies. This is an update of a Cochrane Review published in 2013. Selection criteria Randomized controlled trials (RCTs) and non‐RCTs, including controlled before‐and‐after studies, controlled time series, and controlled interrupted time series studies from malaria‐endemic regions that introduced fish as a larvicide and reported on malaria in the community or the density of the adult anopheline population. In the absence of direct evidence of an effect on transmission, we performed a secondary analysis on studies that evaluated the effect of introducing larvivorous fish on the density or presence of immature anopheline mosquitoes (larvae and pupae forms) in water sources to determine whether this intervention has any potential that may justify further research in the control of malaria vectors. Data collection and analysis Two review authors independently screened each article by title and abstract, and examined potentially relevant studies for inclusion using an eligibility form. At least two review authors independently extracted dat...

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Costs and effectiveness of application of Poecilia reticulata (guppy) and temephos in anopheline mosquito control in river basins below the major dams of Sri Lanka

Cited by 19 publications

References 5 publications

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

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

Effect of mosquito larvicide Abate® on the developmental stages of the Asian common toad, <i>Bufo melanostictus</i>

Larvivorous fish for preventing malaria transmission

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