1963). Although moist soil is needed for this process, earthworms are generally absent from saturated soils as the oxygen levels of the soil are predominately limited this also limits earthworm populations in drier soils (Lee 1985). The Lumbricus rubellus (L. rubellus) or red compost worm is a species of earthworm that has been introduced to many parts of the world (CABI 2014) and is now used in many recreational and commercial activities such as fishing and gardening. (Worm Affair 2014) The L.rubellus
intraspecific diversity of A. caliginosa and the abundance of A. caliginosa genotypes were significantly influenced by earthworm species richness, but not soil properties and glacial topographic features. In earthworms, RAPD technique has been applied to Lumbricus terrestris (Kautenburger, 2006b) and Aporrectodea spp. (Dyer et al., 1998; Lentzsch and Golldack, 2006).
The Lumbricus Terrestris is the scientific term for the common Earthworm, and is otherwise known in the United States as the Nightcrawler. Earning this name due their habit of not appearing above ground to eat until the dark hours of the day, these segmented worms made up of annuli have the ability to dig six and a half feet deep into the soil. They commonly become seven to eight centimeters in length, and spend a lot of their time eating using their mouth which is located in the first segment of