Rhabditis

Rhabditis is a genus of nematodes (roundworms) belonging to the family Rhabditidae. These nematodes are typically found in soil, decaying organic matter, and other moist environments. They are characterized as free-living bacterivores, meaning they feed primarily on bacteria.

Rhabditis species are often used in laboratory research, particularly in the field of developmental biology and genetics, due to their ease of cultivation and short life cycle. Some species within the genus are capable of facultative parasitism, meaning they can live freely but may also parasitize invertebrates under certain conditions. However, they are generally not considered to be significant parasites of vertebrates.

Morphologically, Rhabditis nematodes possess a cylindrical body shape, a distinct head region, and a characteristic esophageal bulb. They reproduce sexually, and the life cycle includes egg, larval, and adult stages. Identification to the species level often requires detailed microscopic examination of anatomical features, such as the morphology of the stoma, esophagus, and reproductive structures.

The genus Rhabditis is ecologically important as it contributes to nutrient cycling in soil ecosystems through bacterial consumption. Their presence and abundance can be indicative of soil health and the availability of organic matter.