, Volume 40, Issue 2, pp 193–198 | Cite as

A robertsonian translocation in the fresh-water triclad Dugesia lugubris: karyometric analysis and evolutionary inferences

  • Mario Benazzi
  • Ileana Puccinelli


Biotype E of Dugesia lugubris has a haploid complement of 4, comprising 3 acrocentrics of different length and a short chromosome; biotype F has a haploid complement of 3, with a long metacentric, an acrocentric and a short chromosome. A karyometrical analysis has shown that the metacentric chromosome of biotype F derived from a centric fusion between the acrocentrics 1 and 3 of biotype E. — The evolutionary meaning of this centric fusion is discussed.


Developmental Biology Centric Fusion Robertsonian Translocation Metacentric Chromosome Short Chromosome 
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Copyright information

© Springer-Verlag 1972

Authors and Affiliations

  • Mario Benazzi
    • 1
  • Ileana Puccinelli
    • 1
  1. 1.Institute of ZoologyUniversity of PisaItaly

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