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Earthworms are commonly found in moist, compost-rich soil, eating a wide variety of organic matters, [3] which include detritus, living protozoa, rotifers, nematodes, bacteria, fungi and other microorganisms. [4] An earthworm's digestive system runs the length of its body. [5]
Oligochaetes are well-segmented worms and most have a spacious body cavity (coelom) used as a hydroskeleton.They range in length from less than 0.5 mm (0.02 in) up to 2 to 3 metres (6.6 to 9.8 ft) in the 'giant' species such as the giant Gippsland earthworm (Megascolides australis) and the Mekong worm (Amynthas mekongianus).
In Britain, it is primarily called the common earthworm or lob worm (though the name is also applied to a marine polychaete). In North America , the term nightcrawler (or vitalis ) is also used, and more specifically Canadian nightcrawler , referring to the fact that the large majority of these worms sold commercially (usually as fishing bait ...
Komarekiona eatoni, or the Kentucky earthworm, is a vulnerable species of nearctic Annelid. K. eatoni is found in the southwestern United States , especially near the Appalachian Mountains , though they range at least northwest to Illinois and northeast to Maryland .
The Lumbricidae are a family of earthworms.About 33 lumbricid species have become naturalized around the world, [1] but the bulk of the species are in the Holarctic region: from Canada (e.g. Bimastos lawrenceae on Vancouver Island) and the United States (e.g. Eisenoides carolinensis, Eisenoides lonnbergi and most Bimastos spp.) and throughout Eurasia to Japan (e.g. Eisenia japonica, E. koreana ...
Anglers sometimes find that worms are more effective bait than artificial flies, and worms can be kept for several days in a tin lined with damp moss. [52] Ragworms are commercially important as bait and as food sources for aquaculture, and there have been proposals to farm them in order to reduce over-fishing of their natural populations. [51]
Invasive earthworms can have a significant impact causing changes in soil profiles, nutrient and organic matter content and other soil organisms or plant communities. In most cases the disturbed areas includes agricultural systems or previously areas that are lacking of earthworms would see the biggest impact of the invasive earthworms. [28]
Sims, R.W. 1967. Earthworms (Acanthodrilidae and Eudrilidae) from Gambia. Bulletin of the British Museum of Natural History 16: 1-43. Zicsi, A. 1997. Contribution to the knowledge to the earthworm fauna of East Africa (Oligochaeta: Eudrilidae), with description of a new species of Polytoreutus. Revue Suisse de Zoologie. Dec. 104; Blakemore, R.J ...