Extrato da cianobactéria Raphidiopsis racirsboskii pode inibir o sucesso reprodutivo do Aedes albopictus
Phytoplanktonic cyanobacteria are known to synthesize a wide range of bioactive compounds that inhibit the growth of aquatic invertebrates. In this work, laboratory bioassays were conducted to test the sensitivity of Aedes albipictus mosquito larvae to extracts from the culture of a toxigenic strain...
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| Formato: | bachelorThesis |
| Idioma: | pt_BR |
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Universidade Federal do Rio Grande do Norte
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| Endereço do item: | https://repositorio.ufrn.br/handle/123456789/44665 |
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| Resumo: | Phytoplanktonic cyanobacteria are known to synthesize a wide range of bioactive compounds that inhibit the growth of aquatic invertebrates. In this work, laboratory bioassays were conducted to test the sensitivity of Aedes albipictus mosquito larvae to extracts from the culture of a toxigenic strain of the cyanobacterium Raphidiopsis racirsboskii and thus evaluate its potential as an inhibitor of reproductive success of this vector of diseases such as dengue, zika and chikungunya. Aedes albopictus larvae were exposed to different treatments considering two factors: the concentration of an extract from a culture of R. raciborskii, and food deprivation. Third stage larvae (10 individuals in each experimental unit) were incubated in a 30 mL volume of one of the following solutions, in triplicate: 100% of the extract, 75%, 50% and 25%, as well as control treatments (mineral water or WC medium), with or without the addition of food. Larval survival and pupation were monitored periodically up to 96 hours of incubation. Larval mortality was slightly higher at higher concentrations of the extract, both in the food and food deprivation treatments. The results obtained showed that the treatments with higher doses of the extract (100% and 75%) showed greater biocidal potential. Future studies should be conducted to test the effect of R. racirborskii extract grown under different growth conditions on the reproductive success of A. albopictus. |
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