Yes, earthworms can and do eat algae.
Earthworms are known to consume various organic materials, and algae can be a part of their diet. This includes both microscopic algae found in soil and, in some cases, larger algae found in aquatic environments.
Terrestrial Algae Consumption
- Earthworms ingest terrestrial microalgae present in the soil.
- Studies have shown that earthworms utilize these microalgae as a food source.
- Examples include the consumption of microalgae by species like Lumbricus terrestris.
Aquatic Algae Consumption
- Some earthworm species, like Lumbricus terrestris, have been observed eating macroalgae foraged from freshwater environments like garden ponds. This demonstrates their opportunistic feeding habits.
Summary
Earthworms are opportunistic feeders capable of consuming both terrestrial and aquatic algae. This contributes to their role in nutrient cycling and soil health.