Taxonomic Implications of NOR-Localization in Lacertid Lizards G. Odierna, E. Olmo, O. Cobror Dipartimento 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 sub- genera. 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. Introduction Recent morphological (B6hme, 1971; Arnold, 1973) and biochemical (Lanza et al., 1977; Mayer & Tiedemann, 1982; Guillaume & Lanza, 1982; Lutz & Mayer, 1985) studies of representatives of the family Lacertidae have started a debate on the tax- onomy and phylogeny of lacertid lizards. Arnold (1973) suggested subdividing the col- lective genus Laceria into four new genera: Lacerta part I; Lacerta part II ; Podarcis and Gallotia. Mayer & Tiedemann (1982) and Lutz & Mayer (1985) however, on the basis of
Amphibia-Reptilia – Brill
Published: Jan 1, 1987
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