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Issue: Vol. 2049 No. 1: 23 Mar. 2009
Type: Correspondence
Published: 2009-03-23
DOI: 10.11646/zootaxa.2049.1.3
Page range: 67–68
Abstract views: 55
PDF downloaded: 1

Erythrocyte size as diagnostic character for the identification of live cryptic Odontophrynus americanus and O. cordobae (Anura: Cycloramphidae)

Ecología, Departamento de Ciencias Naturales, Facultad de Ciencias Exactas, Físico-Químicas y Naturales, Universidad Nacional de Río Cuarto. Ruta Nacional N° 36 - km 601, (X5804BYA) Río Cuarto, Argentina
Ecología, Departamento de Ciencias Naturales, Facultad de Ciencias Exactas, Físico-Químicas y Naturales, Universidad Nacional de Río Cuarto. Ruta Nacional N° 36 - km 601, (X5804BYA) Río Cuarto, Argentina
Ecología, Departamento de Ciencias Naturales, Facultad de Ciencias Exactas, Físico-Químicas y Naturales, Universidad Nacional de Río Cuarto. Ruta Nacional N° 36 - km 601, (X5804BYA) Río Cuarto, Argentina
Amphibia Anura Cycloramphidae

Abstract

External morphology and size do not allow a distinction between diploid Odontophrynus cordobae and tetraploid O. americanus (Beçak et al. 1967; Barrio and Pistol de Rubel 1972). In Córdoba province allopatric diploid populations are distributed to the NW and allopatric tetraploid populations to the SE. Sympatric populations would occur in the SW of the province. A diagnostic character should be found for a correct, simple and rapid distinction of the species without sacrificing individuals. Differences in erythrocyte size (ES) between diploid and tetraploid Odontophrynus were found (Rosset et al. 2006). Martino & Sinsch (2002) defined a range of erythrocyte area for O. cordobae and O. americanus but individuals were not cytogenetically studied. Rosset et al. (2006), showed cell areas from only 2 preserved museum specimens of O. cordobae.

References

  1. Barrio, A. & Pistol de Rubel, D. (1972) Encuesta cariotípica de poblaciones argentino-uruguayas de Odontophrynus americanus; (Anura, Leptodactylidae) relacionada con otros rasgos taxonómicos. Physis, 31, 281–291.

    Beçak, W., Beçak, M.L., Lavalle, D. & Schreiber, G. (1967) Further studies on polyploid amphibians (Ceratophrydidae) II. DNA content and nuclear volume. Chromosoma, 23, 14–23.

    Grenat, P.R., Bionda, C., Salas, N.E. and Martino, A.L. (2009) Variation in erythrocyte size between juveniles and adults of Odontophrynus americanus. Amphibia-Reptilia, 30, 141–145.

    Martino, A.L. & Sinsch, U. (2002) Speciation by polyploidy in Odontophrynus americanus. Journal of Zoology (London), 257, 67–81.

    Nöller, H.G. (1959). Eine einfache Technik der Blutentnahme beim Frosch. Pflüger’ s Archives of Physiology, 269, 98–100.

    Rosset, S., Baldo, D., Lanzone, C. & Basso, N.G. (2006) Review of the geographic distribution of diploid and tetraploid populations of the Odontophrynus americanus species complex (Anura: Leptodactylidae). Journal of Herpetology, 40, 465–477.

    Schmid, M. (1978) Chromosome banding in Amphibia I. Constitutive heterochromatin and nucleolus organizer regions in Bufo and Hyla. Chromosoma (Berl.), 66, 361–388.