Triatomines intrahaemocoelic inoculation protocol: a useful tool to check infectivity in insects

Area of Science:

• Entomology
• Virology
• Parasitology

Background:

• Chagas disease vectors are currently managed using chemical insecticides, prompting research into alternative, ecological control methods.
• Biological control agents, specifically pathogens, offer a promising avenue for managing disease vectors.
• Developing standardized methods for insect pathogen delivery is crucial for effective bioassays.

Purpose of the Study:

• To describe a comprehensive experimental inoculation protocol for triatomines (Chagas disease vectors).
• To establish a safe and effective intrahaemocoelic inoculation technique applicable to various microorganisms.
• To evaluate the infectivity of Triatoma virus (TrV) in different triatomine species using this protocol.

Main Methods:

• Development and description of an intrahaemocoelic inoculation technique for insects.
• Application of the protocol for inoculating triatomines with Triatoma virus (TrV).
• Evaluation of TrV infectivity across multiple triatomine species.

Main Results:

• The intrahaemocoelic inoculation protocol was successfully established and detailed.
• The protocol demonstrated its utility for inoculating various microorganisms, including viruses, fungi, bacteria, and protozoa.
• Infectivity of Triatoma virus (TrV) was evaluated in several triatomine species, providing key data for bioassays.

Conclusions:

• The described intrahaemocoelic inoculation technique is a versatile tool for insect bioassays and biological control research.
• This protocol facilitates the safe and contamination-free introduction of pathogens into insects, including Chagas disease vectors.
• The study provides a foundation for further investigations into pathogen-based vector control strategies.