Related Experiment Video
Updated: Feb 18, 2026
Maintaining Aedes aegypti Mosquitoes Infected with Wolbachia
Published on: August 14, 2017
Development and physiological effects of an artificial diet for Wolbachia-infected Aedes aegypti
Heverton Leandro Carneiro Dutra1,2, Silvia Lomeu Rodrigues1, Simone Brutman Mansur1
1Endossimbiontes e Interação Patógeno-Vetor, Centro de Pesquisas René Rachou - Fiocruz, Belo Horizonte, MG, 30190-002, Brazil.
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.
Insights
Researchers developed a novel blood meal substitute, ADM, for mass-rearing Wolbachia-infected Aedes aegypti mosquitoes. This diet supports high egg production without impacting bacterial density or Zika virus resistance, aiding mosquito control efforts.
Area of Science:
- Vector biology
- Microbial symbiosis
- Arbovirus control
Background:
- Wolbachia endosymbionts in Aedes aegypti mosquitoes inhibit dengue and Zika virus transmission.
- Effective mosquito control programs require efficient mass-rearing infrastructure.
- A lack of suitable blood meal substitutes hinders large-scale rearing of Wolbachia-infected mosquitoes.
Purpose of the Study:
- To develop and evaluate a novel blood meal substitute for mass-rearing wMel Wolbachia-infected Aedes aegypti.
- To assess the impact of the substitute on mosquito reproduction and key Wolbachia parameters.
Main Methods:
- Development of a diet (ADM) using milk protein, infant formula, bovine red blood cells, saline, and ATP.
- Feeding wMel Wolbachia-infected Aedes aegypti mosquitoes with ADM.
- Assessment of egg production, bacterial density, cytoplasmic incompatibility, and Zika virus resistance.
Main Results:
- ADM supported high levels of viable egg production in mosquitoes.
- The diet did not negatively affect bacterial density or cytoplasmic incompatibility.
- Resistance to Zika virus infection was maintained in mosquitoes fed ADM.
Conclusions:
- ADM is an effective blood meal substitute for wMel Wolbachia-infected Aedes aegypti.
- This diet has the potential for use in mass-rearing programs for mosquito-borne virus control.
- Further optimization of ADM could enhance its performance for large-scale applications.
