Análisis morfológico de un caso de polimelia en Rhinella dorbignyi (Anura: Bufonidae)


  • Federico L. Oser
  • Jesica A. Sansiñena
  • Leandro Alcalde
  • Guillermo S. Natale

Palabras clave:

Garden Toad, Ectopic Limbs, Abnormalities


Morphological analysis of a polymelia case in Rhinella dorbignyi (Anura: Bufonidae). This note describes the morphology of a supernumerary left hind limb in an adult female of Rhinella dorbignyi found in Atalaya (Magdalena, Buenos Aires). The case was studied through radiographs of the specimen in life, and once dead, the morphological approach included dissection
to observe the appendicular muscles and diaphanization with double staining to observe the skeleton. The notable features of the supernumerary limb are: (1) absence of finger I, (2) shorter length of all portions of the limb and less robustness than in a normal hind limb, (3) anomalous junction with the pelvic girdle by means of a well marked femoral head with limb-type features associated to bipedal gait, (4) femur without muscles, and (5) tibia and fibula completely fused in midline. In short, the supernumerary limb is a reduced duplication of the left hind limb.


Anderson, W.I., Langheinrich, K.A., & McCaskey, P.C. 1985. Polymelia in a broiler chicken. Avian Diseases 29: 244-245.

Araujo, H.B., Costa-Pinto, D., de Castro, C.S.C., & Pires, J.R. 2019. A case of polymelia associated with syndactyly in Didelphis aurita (Wied-Neuwied, 1826). Brazilian Journal of Biology 80: 589-593.

Barragán-Ramírez, J.L., & Navarrete-Heredia, J.L. 2011. Primer registro de un caso de malformaciones en Lithobates neovolcanicus (Hillis & Frost 1985) (Anura: Ranidae). Acta Zoológica Mexicana 27: 837-841.

Cupul-Magaña, F.G., García de Quevedo-Machain, R., Tovar- Ramos, J.A., & Curiel-Beltrán, J.A. 2014. Duplicación de miembro anterior en Iguana iguana (Linnaeus, 1758): registro de caso. Cuadernos de Herpetología 28(1): 33-34.

Das, P., & Mohanty-Hejmadi, P. 2000. Vitamin A mediated limb deformities in the common Indian toad, Bufo melanostictus (Schneider). NISCAIR-CSIR 38: 258-264.

Duque-Amado, C., Calvo Revuelta, M., & Sánchez-Vialas, A. 2020. Polimelia en un ejemplar de Paramesotriton hongkongensis (Caudata: Salamandridae) de la colección de herpetología del Museo Nacional de Ciencias Naturales de Madrid. Boletín de la Asociación Herpetológica Española 31: 36-39.

Fabrezi, M. 1999. Duplicación de la extremidad anterior en Lepidobatrchus llanensis (Anura: Leptodactylidae). Cuadernos de Herpetología 13: 99-100.

Gaggero, P.1959. Caso de monstruosidad en el sapo Bufo arenarum Hensel. En I Congreso Sudamericano de Zoología (La Plata, 1959).

García-Espinosa, I., García-Cruz, R., Huerta-Mendoza, H., Cabrera-Hernández, R., Merelo-Villafán, I., & López- Alfonso, A. 2002. Polimelia. Reporte de un caso y revisión de la literatura. Acta Ortopédica Mexicana 16(5): 272-275.

González-Fernández, J.E., & Valladolid, M. 2004. Un caso de polimelia natural en Pelobates cultripes, Cuvier, 1829. Boletín Asociación Herpetológica Española 15: 26-29.

Gurushankara, H.P., Krishnamurthy, S.V., & Vasudev, V. (2007). Morphological abnormalities in natural populations of common frogs inhabiting agroecosystems of central Western Ghats. Applied Herpetology 4: 39-45.

Hoppe, D. M. 2005. Malformed frogs in Minnesota: history and interspecific differences. Amphibian declines: The conservation status of United States species 103-108.

Huchzermeyer, F.W. 2003. Crocodiles: biology, husbandry and diseases. CABI.

Johnson, P.T., Lunde, K.B., Ritchie, E.G., & Launer, A.E. 1999. The effect of trematode infection on amphibian limb development and survivorship. Science 284: 802-804.

Johnson, P. T., Lunde, K. B., Ritchie, E. G., Reaser, J. K., & Launer, A. E. 2001b. Morphological abnormality patterns in a California amphibian community. Herpetologica 57: 336-352.

Lajmanovich, R.C., Peltzer, P.M., Attademo, A.M., Cabagna- Zenklusen, M.C., & Junges, C.M. 2012. Los agroquímicos y su impacto en los anfibios: un dilema de difícil solución. Química Viva 11: 184-198.

Lannoo, M.J. 2009. Amphibian malformations: 3089–3111. En H. Heatwole & J. W. Wilkinson (Eds.), Amphibian Decline: Diseases, Parasites, Maladies and Pollution Vol. 8 in Amphibian Biology. Baulkham Hills, Australia: Surrey Beatty & Sons.

Lleonart, I.R., Prado, E.A.S., & Torres, E.O. 2010. Un curioso caso de polimelia en un gallo criollo: siamés incompleto. Revista Electrónica de Veterinaria 11: 1-4.

Montes, V.D., Espitia, P.A., & Manrique, E.P. 2012. Descripción de polimelia en un ternero Brahman comercial reporte de un caso. Revista Colombiana de Ciencia Animal 4: 259-265.

Ouellet, M., Bonin, J., Rodrigue, J., DesGranges, J. L., & Lair, S. 1997. Hindlimb deformities (ectromelia, ectrodactyly) in free-living anurans from agricultural habitats. Journal of wildlife diseases 33: 95-104.

Peltzer, P.M., Lajmanovich, R.C., Sanchez, L.C., Attademo, A.M., Junges, C.M., Bionda, C.L., Martino, A. & Basso, A. 2011. Morphological abnormalities in amphibian populations. Herpetological Conservation and Biology 6: 432-442.

Perí, S.I., & Williams, J.D. 1988. Anomalías osteológicas en Hyla pulchella pulchella y Pseudis paradoxus platensis (Amphibia: anura). Boletín de la Asociación Herpetológica Argentina 4: 4-5.

Pollo, F., Bionda, C., Otero, M., Grenat, P., Babini, S., Flores, P., Grisolia, M., Salas, N., & Martino, A. 2019. Morphological abnormalities in natural populations of the common South American toad Rhinella arenarum inhabiting fluoride-rich environments. Ecotoxicology and Environmental Safety 177: 32-38.

Rothschild, B.M., Schultze, H.P., & Pellegrini, R. 2012. Herpetological osteopathology: Annotated bibliography of amphibians and reptiles. Springer Science & Business Media. Lawrence.

Sessions, S.K., & Ruth, S.B. 1990. Explanation for naturally occurring supernumerary limbs in amphibians. Journal of Experimental Zoology 254: 38-47.

Sparling, D.W., Linder, G., Bishop, C.A., & Krest, S. (Eds.). 2010. Ecotoxicology of amphibians and reptiles. CRC Press. New York.

Stopper, G.F., Hecker, L., Franssen, R.A., & Sessions, S. K. 2002. How trematodes cause limb deformities in amphibians. Journal of Experimental Zoology 294: 252-263.

Taylor, W.R. & Van Dyke, G.C. 1985. Revised procedures for staining and clearing small fishes and other vertebrates for bone and cartilage study. Cybium 9: 107-119.

Velo-Antón, G., Becker, C.G., & Cordero-Rivera, A. 2011. Turtle carapace anomalies: the roles of genetic diversity and environment. PLoS One 6: e18714.

Verma, S., Khanna, M., Tripathi, V. N., & Yadav, N. C. 2013. Occurrence of polymelia in a female child. Journal of Clinical Imaging Science 3.




Cómo citar

Oser, F. L. ., Sansiñena, J. A. ., Alcalde, L. ., & Natale, G. S. . (2023). Análisis morfológico de un caso de polimelia en Rhinella dorbignyi (Anura: Bufonidae). Cuadernos De Herpetología, 37(2). Recuperado a partir de