, Volume 138, Issue 11–12, pp 1127–1132 | Cite as

Heteromorphic Z and W sex chromosomes in Physalaemus ephippifer (Steindachner, 1864) (Anura, Leiuperidae)

  • Juliana Nascimento
  • Yeda Rumi Serra Douglas Quinderé
  • Shirlei Maria Recco-Pimentel
  • Janaína Reis Ferreira Lima
  • Luciana Bolsoni Lourenço
Original Research


Heteromorphisms between sex chromosomes are rarely found in anurans and sex chromosome differentiation is considered to be a set of recent recurrent events in the evolutionary history of this group. This paper describes for the first time heteromorphic sex chromosomes Z and W in the leiuperid genus Physalaemus. They were found in P. ephippifer, a species of the P. cuvieri group, and corresponded to the eighth pair of its karyotype. The W chromosome differed from the Z chromosome by the presence of an additional segment in the short arm, composed of a distal NOR and an adjacent terminal DAPI-positive C-band. The identification of this sex chromosome pair may help in future investigations into the sex determining genes in the genus Physalaemus.


Sex chromosome Physalaemus Cytogenetics Heterochromatin 



This work was supported by Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP), Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) and Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES/PROEX).


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Copyright information

© Springer Science+Business Media B.V. 2010

Authors and Affiliations

  • Juliana Nascimento
    • 1
  • Yeda Rumi Serra Douglas Quinderé
    • 1
  • Shirlei Maria Recco-Pimentel
    • 1
  • Janaína Reis Ferreira Lima
    • 2
  • Luciana Bolsoni Lourenço
    • 1
  1. 1.Departamento de Anatomia, Biologia Celular, Fisiologia e Biofísica, Instituto de BiologiaUniversidade Estadual de Campinas—UNICAMPSão PauloBrazil
  2. 2.Instituto de Pesquisas Científicas e Tecnlógicas do Amapá-IEPA, Núcleo de ZoologiaMacapá, AmapáBrazil

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