← Elaine Ingham · Research and publications
Nematodes: their food explains their role
Bacterial feeders, fungal feeders, predators and plant parasites participate differently in soil life. Recognising feeding groups is the starting point.
Educational chapter published:
Who eats what
Ingham introduces nematodes through their feeding groups. Some consume bacteria or fungi, others hunt small organisms, and others attack roots. Mouthpart structures help distinguish these groups. [1]
Nutrients and populations
Microbial consumption by nematodes participates in nitrogen release. Predators influence other populations and provide food for larger organisms. Nematodes also transport microbes on their bodies and within their digestive systems. [1]
Giving a total count meaning
Assessing a sample requires knowing which feeding groups it contains. Their relationship with roots and possible damage has practical significance. Numbers can then connect with particular functions and questions.
Microscopy as a learning tool
At the Hellenic Center for Regenerative Agriculture, practice in observing mouthparts can support this distinction. Training calls for repeated observations and suitable preparation. Diagnosing a particular plant-parasitic species requires appropriate laboratory identification.
Sources and references
- Ingham, E.R. (1999). Soil Nematodes. Soil Biology Primer, unit F. USDA Natural Resources Conservation Service, Soil Quality Institute, PA-1637. August 1999. Original publication and study record
- Original full paper as PDF