A three-dimensional habitat for C. elegans environmental enrichment

Area of Science:

• Nematology
• Behavioral Biology
• Genetics

Background:

• Minimalistic laboratory conditions for Caenorhabditis elegans (nematode) contrast with their complex natural habitats.
• This disparity can influence gene expression and organismal behavior, highlighting the need for more complex lab environments.

Purpose of the Study:

• To develop a protocol for creating three-dimensional (3D) habitable scaffolds for trans-generational Caenorhabditis elegans culture.
• To investigate if enriched laboratory conditions influence C. elegans behavior and gene expression.

Main Methods:

• Decellularization and sterilization of fruit tissue to create axenic 3D scaffolds.
• Culturing Caenorhabditis elegans over multiple generations within these scaffolds.
• Observing and quantifying behavioral responses to the enriched environment.

Main Results:

• Caenorhabditis elegans successfully cultured trans-generationally in the 3D scaffolds.
• Worms exhibited a behavioral preference for the enriched scaffold environment.
• Dauer populations displayed complex nictation behaviors, including group towering and jumping.

Conclusions:

• Three-dimensional scaffolds provide a more naturalistic and enriched environment for laboratory C. elegans culture.
• Enriched environments can induce complex behaviors not typically observed in standard lab conditions.
• This approach offers a valuable tool for studying gene-environment interactions and fundamental nematode biology.