Standardized methods for rearing a moth larva, Manduca sexta, in a laboratory setting

Area of Science:

• Entomology
• Insect Rearing
• Laboratory Animal Models

Background:

• The tobacco hornworm (Manduca sexta) is a valuable insect model for physiological and pathogen virulence studies.
• Its larger size compared to other models like Galleria mellonella allows for diverse experimental applications.
• Existing rearing methods for Manduca sexta are minimally documented, hindering its broader use.

Purpose of the Study:

• To develop and present a simplified, cost-effective protocol for rearing Manduca sexta in a laboratory setting.
• To facilitate the adoption of Manduca sexta as a standard insect model in research.
• To provide standardized rearing methods suitable for various experimental applications, including infection models.

Main Methods:

• Expanded upon existing protocols and developed novel rearing techniques for Manduca sexta.
• Focused on utilizing generalized equipment and supplies for low-cost maintenance.
• Established a protocol for maintaining approximately five hundred larvae across different instars monthly.

Main Results:

• Developed a low-cost (<$100/month) rearing protocol for a laboratory colony of Manduca sexta.
• The protocol requires minimal specialized equipment, simplifying entry for researchers.
• Standardized methods are presented, suitable for general use and specific applications like infection models.

Conclusions:

• The presented protocol offers a practical and economical solution for rearing Manduca sexta.
• Simplified and standardized methods lower the barrier for researchers to utilize this insect model.
• This work supports the expanded use of Manduca sexta in physiological and pathogen research.