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The average thickness of the drilosphere (lining of an earthworm burrow) is 2 mm, [4] but it can be much wider (about 8 mm) around the burrows of litter-feeding earthworms. [ 5 ] Through the drilosphere, earthworms influence soil microbial communities, with effects on microbial processes related to soil organic matter and nutrient dynamics. [ 6 ]
The worms' digestive systems create environments that allow certain species of microbes to thrive to help create a "living" soil environment for plants. [9] The fraction of soil which has gone through the digestive tract of earthworms is called the drilosphere. [10] Vermicomposting is a common practice in permaculture. [11] [12]
Eudrilus eugeniae, also called the "African nightcrawler", is an earthworm species native to tropical west Africa and now widespread in warm regions under vermicompost; it is an excellent source of protein and has great pharmaceutical potential. [1] [2]
However, 'earthworm' can be a source of confusion since, in most of the world, other species are more typical. For example, through much of the unirrigated temperate areas of the world, the "common earthworm" is actually Aporrectodea (= Allolobophora ) trapezoides , which in those areas is a similar size and dark colour to L. terrestris .
Earthworm head. Depending on the species, an adult earthworm can be from 10 mm (0.39 in) long and 1 mm (0.039 in) wide to 3 m (9.8 ft) long and over 25 mm (0.98 in) wide, but the typical Lumbricus terrestris grows to about 360 mm (14 in) long. [9]
[4] [9] The southeastern crown snake (Tantilla coronata) has 15 midbody scale rows, a dark head, and a dark collar. [3] The worm snake diet is mostly carnivorous, feeding on, in some areas, strictly earthworms and in others opportunistically eating slugs and other creatures that they can fit into their mouths. [citation needed]
Driving in the winter can be terrifying. We've got you covered with 11 mistakes to avoid while driving in icy or snowy conditions.
[1] While the worms themselves are sensitive to cold temperatures, the cocoons are very cold-hardy. They can stay viable over the winter in temperatures below −40 °C. In an experiment, 50% of a sample of cocoons kept at the temperature of liquid nitrogen (−196 °C) for 24 hours still had viable embryos.