The Study of Regeneration in Posterior Part of Aporrectodea Caliginosa

Abstract

Aim: Many organisms have the ability to regenerate tissue to some extent from the healing of wounds to replace the entire organs. Aporrectodea caliginosa is an Oligochaeta species are prime organisms for tissue regeneration and stem cells studies due to their extensive capacity to regenerate. Taking notice of its high potential as a new material for regenerative and stem cells study, detailed studies were undertaken on the regeneration of Aporrectodea caliginosa. Methods: 80 Aporrectodea caliginosa were acquired from Karaj in Alborz province of Iran and kept in six situations different in temperature, humidity, pH, structure of soil and section plane. Posterior part of the worms seated in the medium and kept up to four weeks. At the end of each week the samples were collected for further studies such as histological experiments and morphological studies. Result and Conclusion: The data have shown that anterior part from a new tail regenerate like other species but regeneration in posterior part is limited to wound healing in section plane and could regenerate a new head in posterior part. Even more the regeneration in Aporrectodea caliginosa regulated by both internal and external environmental factors. 