Article

Russian Journal of Developmental Biology

, Volume 35, Issue 4, pp 228-232

First online:

Morphogenesis in Planarians Dugesia tigrina

  • I. M. SheimanAffiliated withInstitute of Cell Biophysics, Russian Academy of Sciences
  • , N. D. KreshchenkoAffiliated withInstitute of Cell Biophysics, Russian Academy of Sciences
  • , Z. V. Sedel'nikovAffiliated withPushchino State University
  • , A. V. GroznyiAffiliated withInstitute of Cell Biophysics, Russian Academy of Sciences

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Abstract

We carried out computer morphometry in regenerates of planarians Dugesia tigrina. The blastema growth was analyzed in fragments of planarians after their fission and after transverse transection at different body levels. The blastema was growing at a higher rate on tail fragments than on the head fragments and the growth rate was the higher, the closer the transection was to the head end. After fission, the blastema was growing at a slower rate than after transection in the fission zone. The growth of adjacent blastemas formed on both sides after fission or transection proceeded at different rates as a function of new body polarity.

planarians fission regeneration morphogenesis morphometry