n African Zoology - Karyological analysis of four Tunisian species of Anura (Amphibia)

Volume 42, Issue 2
  • ISSN : 1562-7020
  • E-ISSN: 2224-073X
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We present the results of a chromosomal study (C-, Ag-NOR-, endonuclease digestion, DAPI and CMA banding) carried out on four Tunisian species of amphibians : and . For comparative purposes, our cytogenetic analysis was also extended to Moroccan specimens of and . Tunisian specimens of display chromosome and chromatin characters very similar to those found in other specimens, both North African and Euro-Asian. By contrast, chromosomes of Tunisian specimens of differed from the Moroccan specimens in presenting a different Q-banding phenotype. Tunisian specimens of displayed the plesiomorphic karyotype of 2n = 26 biarmed chromosomes and NORs on the eleventh pair. The Tunisian specimens of had the typical 2n=28 karyotype with the 13th pair of telocentric elements, in contrast to the Spanish specimens that display the chromosomes of this pair shaped as metacentric. Similarities and differences of the four studied Tunisians anuran taxa are discussed with references to published data on their relatives.

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