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Approximately 182 earthworm taxa in twelve families are reported from the United States and Canada, of which sixty (about 33%) are introduced. [4] Only two genera of lumbricid earthworms are indigenous to North America while introduced genera have spread to areas without any native species, especially in the north where forest ecosystems rely on a large amount of undecayed leaf matter.
Earthworms are shifting their ranges northwards into forests between 45° and 69° latitude in North America that have lacked native earthworms since the last ice age. [3] Of the 182 taxa of earthworms found in the United States and Canada, 60 (33%) are introduced species, these earthworm species are primarily from Europe and Asia.
The Oregon giant earthworm was first described by Frank Smith in 1937 from a specimen found near Salem, Oregon in 1903. The species was named in honor of its collector, F. M. McElfresh. [ 2 ] Like its cousin, the giant Palouse earthworm ( Driloleirus americanus ) of Washington, this species can grow to lengths in excess of 3 feet (0.91 m) and ...
The event claims to have originated when in 1980 a local Willaston farmer's son Tom Shufflebotham charmed 511 worms in half an hour. [ 10 ] The current world record was established on 29 June 2009, by 10-year-old Sophie Smith of Willaston, England, who raised 567 worms during Britain's World Worm Charming Championship.
The fall armyworm is widely distributed in eastern and central North America and in South America. It cannot survive overwinter in below freezing temperatures, [7] [8] so it only survives the winter in the most southern regions of the United States, namely Texas and Florida.
The Chernobyl site in northern Ukraine has been filled with deadly radiation since the 1986 nuclear meltdown, but a new study shows that microscopic worms at the site seem to be unaffected by the ...
Little is known about the mating habits of the western worm snake, but breeding likely occurs in the early spring. Eggs are laid in the early summer. Clutch size is normally 1-8 eggs, and hatching takes place in August or September. Hatchlings range in size from 3 to 4 inches (7.6 to 10.2 cm) in total length.
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