On Some Sacral Anomalies in Laboratory Common Platanna (Xenopus laevis)

E. E. Kovalenko

Abstract


A new variant of abnormal sacral structure in Anura is described: the sacral diapophyses are completely absent on one or both sides, the hind limbs and the pelvic arch are developed quite normally. This anomaly was found in 4 froglings of Xenopus laevis from two laboratory series obtained from different breeders. That compels one to modify the notion about the leading part of the ilium in the sacrum morphogenesis.

Keywords


Anura; Xenopus; sacral structure anomalies

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References


Kovalenko E. E. (1992), The Anomalies of Vertebral Column in Anura, Izd. SPbGU, St. Petersburg [in Russian].

Kovalenko E. E. (1994), «The compound sacrum in individual variability of common platanna (Xenopus laevis)», Russ. J. Herpetol., 1(2), 172 – 178.

Kovalenko E. E. and Danilevskaya S. E. (1994), «On unique forms of anomalous sacral structure in tailless amphibians», Russ. J. Herpetol., 1(1), 30 – 36.

Wassersug R. J. (1976), «A procedure for differential staining of cartilage and bone in whole formalin-fixed vertebrates», Stain Techn., 51, 131 – 134.




DOI: https://doi.org/10.30906/1026-2296-1995-2-2-170-173

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