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Development and physiological effects of an artificial diet for Wolbachia-infected Aedes aegypti.


ABSTRACT: The endosymbiotic bacterium Wolbachia spreads rapidly through populations of Aedes aegypti mosquitoes, and strongly inhibits infection with key human pathogens including the dengue and Zika viruses. Mosquito control programs aimed at limiting transmission of these viruses are ongoing in multiple countries, yet there is a dearth of mass rearing infrastructure specific to Wolbachia-infected mosquitoes. One example is the lack of a blood meal substitute, which accounts for the Wolbachia-specific physiological changes in infected mosquitoes, that allows the bacterium to spread, and block viral infections. To that end, we have developed a blood meal substitute specifically for mosquitoes infected with the wMel Wolbachia strain. This diet, ADM, contains milk protein, and infant formula, dissolved in a mixture of bovine red blood cells and Aedes physiological saline, with ATP as a phagostimulant. Feeding with ADM leads to high levels of viable egg production, but also does not affect key Wolbachia parameters including, bacterial density, cytoplasmic incompatibility, or resistance to infection with Zika virus. ADM represents an effective substitute for human blood, which could potentially be used for the mass rearing of wMel-infected A. aegypti, and could easily be optimized in the future to improve performance.

SUBMITTER: Dutra HLC 

PROVIDER: S-EPMC5691197 | biostudies-other | 2017 Nov

REPOSITORIES: biostudies-other

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Development and physiological effects of an artificial diet for Wolbachia-infected Aedes aegypti.

Dutra Heverton Leandro Carneiro HLC   Rodrigues Silvia Lomeu SL   Mansur Simone Brutman SB   de Oliveira Sofia Pimenta SP   Caragata Eric Pearce EP   Moreira Luciano Andrade LA  

Scientific reports 20171116 1


The endosymbiotic bacterium Wolbachia spreads rapidly through populations of Aedes aegypti mosquitoes, and strongly inhibits infection with key human pathogens including the dengue and Zika viruses. Mosquito control programs aimed at limiting transmission of these viruses are ongoing in multiple countries, yet there is a dearth of mass rearing infrastructure specific to Wolbachia-infected mosquitoes. One example is the lack of a blood meal substitute, which accounts for the Wolbachia-specific ph  ...[more]

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