We conducted a karyological study of Iberian rock lizards by standard and C-, AgNOR-, DAPI-, and Alu I-banding methods. The results showed that Lacerta monticola monticola and L. m. cantabrica possess 2N = 36 uniarmed chromosomes. Lacerta m. cyreni differs from the other two subspecies of L. monticola in the NOR-bearing chromosome pairs and in the presence of the heteromorphic and heterochromatic W-chromosome. The Pyrenean species L. aurelioi and L. bonnali differ from L. monticola in having a karyotype rich in biarmed elements. In fact, L. aurelioi possesses a 2N = 26 karyotype with 10 biarmed + 16 uniarmed macrochromosomes. In L. bonnali, an intraspecific variability in diploid number due to Robertsonian translocations was found: the specimens of L. b. aranica have a karyotype similar to that of L. aurelioi while the specimens from nominal subspecies (population of Monte Perdido) possess a 2N = 24 karyotype with 12 biarmed + 12 uniarmed macrochromosomes. Our results confirm that Iberian rock lizards form a heterogeneous group in which at least five taxa can be distinguished karyologically.
The karyology of the Iberian rock lizards / Odierna, Gaetano; Aprea, G.; Arribas, O. J.; Capriglione, Teresa; Caputo, V.; Olmo, E.. - In: HERPETOLOGICA. - ISSN 0018-0831. - STAMPA. - 52:(1996), pp. 542-550.
The karyology of the Iberian rock lizards.
ODIERNA, GAETANO;CAPRIGLIONE, TERESA;
1996
Abstract
We conducted a karyological study of Iberian rock lizards by standard and C-, AgNOR-, DAPI-, and Alu I-banding methods. The results showed that Lacerta monticola monticola and L. m. cantabrica possess 2N = 36 uniarmed chromosomes. Lacerta m. cyreni differs from the other two subspecies of L. monticola in the NOR-bearing chromosome pairs and in the presence of the heteromorphic and heterochromatic W-chromosome. The Pyrenean species L. aurelioi and L. bonnali differ from L. monticola in having a karyotype rich in biarmed elements. In fact, L. aurelioi possesses a 2N = 26 karyotype with 10 biarmed + 16 uniarmed macrochromosomes. In L. bonnali, an intraspecific variability in diploid number due to Robertsonian translocations was found: the specimens of L. b. aranica have a karyotype similar to that of L. aurelioi while the specimens from nominal subspecies (population of Monte Perdido) possess a 2N = 24 karyotype with 12 biarmed + 12 uniarmed macrochromosomes. Our results confirm that Iberian rock lizards form a heterogeneous group in which at least five taxa can be distinguished karyologically.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
