The use of bacterial larvicides in mosquito and black fly control programmes in Brazil

Regis, Lêda; Silva, Sinara B. da; Melo-Santos, Maria Alice Varjal de

doi:10.1590/s0074-02762000000700035

Cited by 47 publications

(29 citation statements)

References 9 publications

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“…A resistance monitoring program is needed in order to improve mosquito control interventions as, for example, was done in some localities of Brazil with the replacement of temephos by Bacillus spp. (Regis et al 2000, Braga et al 2004.…”

Section: Discussion and Future Directionsmentioning

confidence: 99%

Aedes aegypti, Aedes albopictus, and dengue in Argentina: current knowledge and future directions

Vezzani

Carbajo

2008

Mem. Inst. Oswaldo Cruz

130

100

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Section: Discussion and Future Directionsmentioning

confidence: 99%

Aedes aegypti, Aedes albopictus, and dengue in Argentina: current knowledge and future directions

Vezzani

Carbajo

2008

Mem. Inst. Oswaldo Cruz

130

100

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“…B. thuringiensis subsp. israelensis has been used in the field for nearly 20 years with no development of insect resistance (7,11).…”

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confidence: 99%

Diversity of Bacillus thuringiensis Strains from Latin America with Insecticidal Activity against Different Mosquito Species

Ibarra

Rincón

Ordúz

et al. 2003

Appl Environ Microbiol

130

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The characterization of selected Bacillus thuringiensis strains isolated from different Latin America countries is presented. Characterization was based on their insecticidal activity against Aedes aegypti, Culex quinquefasciatus, and Anopheles albimanus larvae, scanning electron microscopy, sodium dodecyl sulfate-polyacrylamide gel electrophoresis, and plasmid profiles as well as PCR analysis using novel general and specific primers for cry and cyt genes encoding proteins active against mosquitoes (cyt1, cyt2, cry2, cry4A, cry4B, cry10, cry11, cry17, cry19, cry24, cry25, cry27, cry29, cry30, cry32, cry39, and cry40). Strains LBIT315, LBIT348, and IB604 showed threefold higher mosquitocidal activity against A. aegypti and C. quinquefasciatus larvae than B. thuringiensis subsp. israelensis and displayed high similarities with the B. thuringiensis subsp. israelensis used in this study with regard to protein and plasmid profiles and the presence of cry genes. Strain 147-8906 has activity against A. aegypti similar to that of B. thuringiensis subsp. israelensis but has different protein and plasmid profiles. This strain, harboring cry11, cry30, cyt1, and cyt2 genes, could be relevant for future resistance management interventions. Finally, the PCR screening strategy presented here led us to identify a putative novel cry11B gene.

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“…It is considered an anthropophilic species, on the Northern coast of São Paulo and Southern Brazil S. pertinax is the main species that exerts a role of insect nuisance due to allergic reactions caused by bites influencing wellbeing of the population as a whole (Strieder & Corseuil, 1992). Therefore, increasing the number of biological control programs to mitigate these impacts (Araújo-Coutinho, 1995;Regis, Silva, Alice & Santos, 2000). However, these organisms are important to the ecosystem because they represent a bond of connection between particulate matter and predators in the food chain (Malmqvist, 1994).…”

Section: Discussionmentioning

confidence: 99%

Contaminación del agua y distribución de la mosca negra (Diptera: Simuliidae) en el bosque Atlántico, Brasil

Docile

Figueiró

Gil-Azevedo

et al. 2015

RBT

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Black flies have medical importance because some species are vectors of the Onchocerciasis and Mansonelosis, nevertheless, their ecology and potential use as bioindicators is still poorly studied in the Neotropical Region. In Brazil, bioindicators use is strongly focused in a multimetrical ecological index approach; this way, we investigated the black fly spatial distribution, in relation to abiotic factors correlated to water quality, to provide baseline information for their utilization as standalone indicators of lotic systems integrity. We have tested the hypothesis that environmental changes related to urbanization, lead to decreased abundance and loss in the number of species of the black fly fauna. The sampling was conducted in 10 urban and 10 preserved streams during the dry season (August-September) of 2012, in the mountainous region of Teresópolis, State of Rio de Janeiro, Brazil. The streams were characterized for their environmental integrity conditions and physico-chemical properties of water. In each stream, five different rapid points were sampled in a section of 50 meters, 10 meters apart from each other. The black flies were sampled with a kick-net sampler on rocky substrates. The material was separated and the larvae were sorted in morphotypes, and later, the final instar specimens were dissected and identified with the help of taxonomical literature at species level. A total abundance of 488 larvae from nine species were collected, 5 (1.02 %) in extremely impacted streams, 470 (96.31 %) in intermediate streams and 13 (2.66 %) in preserved streams. The visual evaluation (HII) differed in relation to the water physico-chemical evaluation, in which more variation in the characterization of the sampling sites was observed. In Canonical Correspondence Analysis Simulium subpallidum, S. inscrustatum and S. pertinax were significantly associated with intermediate values of most of the variables, and then to intermediate impacted sites. On the other hand, Lutzsimulium hirticosta, S. subnigrum and Simulium sp. A were associated to low values of chemical variables, and then to more preserved sites. Most studies on the bioindicator potential of Simuliidae have suggested an approach to agricultural impacts, while our results, on the other hand, showed that Simuliidae species were present in streams with intermediate urban pollution impacts, but absent in heavily impacted sites. Thus, our data suggested that some species are associated to more pristine breeding sites, such as L. hirticosta and Simulium sp. A, while others may be good bioindicators of moderately impacted streams, such as S. pertinax, S. subnigrum and S. subpallidum. Rev. Biol. Trop. 63 (3): 683-693. Epub 2015 September 01.

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The use of bacterial larvicides in mosquito and black fly control programmes in Brazil

Cited by 47 publications

References 9 publications

Aedes aegypti, Aedes albopictus, and dengue in Argentina: current knowledge and future directions

Aedes aegypti, Aedes albopictus, and dengue in Argentina: current knowledge and future directions

Diversity of Bacillus thuringiensis Strains from Latin America with Insecticidal Activity against Different Mosquito Species

Contaminación del agua y distribución de la mosca negra (Diptera: Simuliidae) en el bosque Atlántico, Brasil

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