Abstract
Earthworms are eucoelomate, vermiform and metamerically segmented animals belonging to Phylum Annelida. They are a powerful model organism for use in studying the mechanism of regeneration. Regeneration is a complex phenomenon to restore lost or damaged parts. Such kind of regeneration is naturally vested in earthworms and regeneration capability varies among different species. In this present study Eisenia fetida species was taken. Groups of earthworms were kept in different temperatures and their regeneration capability was examined. The earthworms were exposed to three different temperature ranges: below 24°c, 24°c - 30°c, and above 30°c. The earthworms those were exposed to low (<24°c) and high (>30°c) temperatures showed decreased rate of regeneration. This shows the influence of environmental factors on regeneration rate.
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