Types of supernumerary outgrowths produced after inverting the dorsoventral limb axis of the anuranBufo bufo
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Contralateral grafts were performed on the larval limb buds of the anuranBufo bufo. The dorsoventral axis of 80 buds at stages IV or V was inverted. Ten tadpoles were used as controls. Fifty-two supernumerary structures developed, all of them in dorsal or ventral locations on the host stump. The majority (32 out of the 44 outgrowths with more than 3 toes) were normal limbs of stump handedness. However, the following abnormal structures were also observed: 2 double-posterior, 3 mixed-symmetric, and 7 undetermined cases. These results are in agreement with the predictions of a hierarchical polar coordinate model for epimorphic regeneration.
Key wordsSupernumerary outgrowths Dorsoventral limb axis Anuran Bufo bufo
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- Bryant SV, French V, Bryant PJ (1981) Distal regeneration and symmetry. Science 212:993–1002Google Scholar
- Costaridis P (1990) Supernumerary structures that appear during the limb bud development of the anuranBufo bufo. PhD Thesis, University of AthensGoogle Scholar
- Costaridis P, Zafeiratos C, Kiortsis V, Papageorgiou S (1989) Diverse supernumerary structures develop after inverting the anteroposterior limb axis of the Anuran. Dev Biol 132:502–511Google Scholar
- Ecker A (1889) The anatomy of the frog. Clarendon Press, OxfordGoogle Scholar
- French V, Bryant PJ, Bryant SV (1976) Pattern regulation in epimorphic fields. Science 193:969–981Google Scholar
- Maden M (1982) Supernumerary limbs in amphibians. Am Zool 22:131–142Google Scholar
- Meinhardt H (1983) A boundary model for pattern formation in vertebrate limbs. J Embryol Exp Morphol 76:115–137Google Scholar
- Papageorgiou S (1984) A hierarchical polar coordinate model for epimorphic regeneration. J Theor Biol 109:533–554Google Scholar
- Papageorgiou S (1989) Cartesian or polar coordinates in pattern formation? J Theor Biol 141:281–283Google Scholar
- Slack JMW (1980) A serial threshold theory of regeneration. J Theor Biol 82:105–140Google Scholar