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Chromosome banding in three species of Brazilian toads (Amphibia- Bufonidae)

Sanae Kasahara^I; Ana Paula Zampieri Silva^I; Célio F.B. Haddad^II

^IDepartamento de Biologia, Instituto de Biociências, Universidade Estadual Paulista (UNESP), Campus de Rio Claro, Caixa Postal 199, 13506-900 Rio Claro, SP, Brasil. Send correspondence to S.K.
^IIDepartamento de Zoologia, Instituto de Biociências, UNESP, Campus de Rio Claro, Rio Claro, SP, Brasil

ABSTRACT

he chromosomes of Bufo crucifer, B. ictericus, and B. paracnemis were studied by conventional staining as well as with C banding and NOR techniques. These species have a diploid number of 2n = 22 and identical karyotypes, composed of metacentric and submetacentric chromosomes. The C banding patterns and NOR data indicate that these species of Bufo are not differentiated by the distribution and amount of constitutive heterochromatin or the position of the nucleolar organizer regions.

Keywords: chromosome banding; Brazilian toads.

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