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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 .
Lumbricus terrestris has several common names, including common earthworm, nightcrawler, and dew worm. It is strongly pigmented, brown-red dorsally, and yellowish ventrally. Setae are widely paired at both ends of the body.
The worm has a hydrostatic skeleton and moves by longitudinal and circular muscular contractions. Setae – tiny hair-like projections – provide leverage against the surrounding soil. Surface movements on moist, flat terrain were reported at a speed of 20 m/h and, based on measurements of the length of the trail, nocturnal activity away from ...
Thus each worm becomes the genetic father of some of their offspring (due to its own sperm transferred to other earthworm) and the genetic mother (offsprings from its own egg cells) of the rest. As the worm slips out of the ring, the ends of the cocoon seal to form a vaguely onion-shaped incubator in which the embryonic worms develop. Hence ...
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 ...
Eisenoides lonnbergi is a species of earthworm native to North America that bioaccumulates a high amount of lead in its body from soil it consumes. [1] This is anomalous as lead is usually immobile in soil and doesn't bioaccumulates up trophic levels compared to the amount of bioaccumulation seen in E. lonnbergi the general rule is that lead concentration in plants and animals is usually lower ...
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