Abstract
The comparative DNA values were measured in three species of South American frogs belonging to the family Ceratophrydidae: Odontophrynus cultripes (2n=22), O. americanus (2n=44) and Ceratophrys dorsata (2n=104). Nuclei of erythrocytes, liver, kidney, pancreas and testis were used for measurements. The results obtained confirmed polyploid evolution in the family Ceratophrydidae. The relative DNA values of these three species conformed to the expected 1∶2∶4 ratio. — In general, the proportional increase in nuclear volume was observed in corresponding tissues of tetraploid and octoploid species.
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Supported by a grant (GM-14577-01) from National Institute of General Medical Sciences — U.S. Public Health Service.
Supported by grants from CNPq, UFMG and Rockefeller Foundation.
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Beçak, W., Beçak, M.L., Lavalle, D. et al. Further studies on polyploid amphibians (Ceratophrydidae). Chromosoma 23, 14–23 (1967). https://doi.org/10.1007/BF00293309
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DOI: https://doi.org/10.1007/BF00293309