Taxonomic Implications of NOR-Localization in Lacertid Lizards

In: Amphibia-Reptilia
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  • 1 1Dipartimento di Biologia Evolutiva e Comparata, Università di Napoli, Via Mezzocannone 8, 80134 Napoli, Italia
  • 2 2Dipartimento di Biologia Evolutiva e Comparata, Università di Napoli, Via Mezzocannone 8, 80134 Napoli, Italia
  • 3 3Dipartimento di Biologia Evolutiva e Comparata, Università di Napoli, Via Mezzocannone 8, 80134 Napoli, Italia

Abstract

Nucleolar organizer position was studied by means of AgNOR technique in 11 species of the Lacerta-complex. NOR position is the same in species within a subgenus, but it is different in different subgenera. This observation supports Arnold's (1973) and Guillaume and Lanza's (1982) suggestion that the different subgenera of Lacerta (Gallotia, Lacerta part I, Lacerta part II and Podarcir) are distinct genera. The results of this study also support the hypothesis that the evolution of lacertid karyotypes is characterized by progressive translocation of microchromosomes to macrochromosomes.

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