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Skeletal Regeneration in Amphibians

Department of Biology, Brown University, Providence, R.I., U.S.A.

¹ Author's address: Department of Biology, Brown University, Providence, R.I., U.S.A.

Received for publication 6 June 1958.

SUMMARY

The failure of de novo regeneration of extirpated bones in adult urodeles has been described repeatedly. Wendelstadt (1901) reported the absence of skeletal regeneration following the removal of either the ulna or radius from the otherwise intact limbs of salamanders. Reed (1903) and Morrill (1918) likewise failed to obtain regeneration of previously excised fibulae in salamander hind limbs. Similar negative results were reported by Schaxel & Böhmel (1928) and Böhmel (1929) following the removal of femurs from axolotls. Gebauer (1933) recorded no regeneration of extirpated bones in Triton cristatus, and Goss (1956) and Rieck & Rudich (1956) noted that ulnae were not replaced after their removal from the limbs of adult Triturus viridescens. In contrast to the situation in adults, Swett & Parsons (1929) have reported the regeneration of completely removed humeri and shoulder girdles in the young larvae of Amblystoma punctatum.

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