Naslov
Complete mitochondrial genomes of three lizard species and the systematic position of the Lacertidae (Squamata)

Autori
Podnar, Martina ; Pinsker, W ; Mayer, Werner

Izvornik
Journal of zoological systematics and evolutionary research (0947-5745) 47 (2009), 1; 35-41

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
Lacertidae; complete mitochondrial genomes; control region; phylogeny; substitution rate; Squamata; lizards

Sažetak
Complete mitochondrial (mt) genomes were sequenced from representatives of three lacertid lizards: Podarcis siculus, Podarcis muralis and Phoenicolacerta kulzeri. In all three genomes the arrangement of the 22 tRNAs, the two rRNAs and the 13 protein-coding genes conforms to the common vertebrate arrangement. The phylogenetic position of Lacertidae within the order Squamata was determined through sequence analyses based on large sections of complete mt genomes. The number of nucleotide sites used for tree construction was 9234 when outgroup taxa were included, and 10 499 when only Squamata were compared. The phylogenetic analyses confirmed the sister group relationship between Lacertidae and Amphisbaenia as previously proposed on the basis of molecular data. Additionally, Bayesian analysis revealed a well supported clade comprising (Gekkonidae (Lacertidae + Amphisbaenia)), which is not in accordance with the traditional morphological view and most of the previous molecular studies. It confirms, however, the close relationship between Gekkonidae and Amphisbaenia as revealed in a recent study based on complete mt genomes from a smaller number of taxa. Intra- and intergeneric sequence comparisons of six commonly used marker genes showed rather high levels of divergence within the Lacertidae. In the intrageneric comparison the control region proved to be considerably more conserved than the protein coding genes.

Izvorni jezik
Engleski

Znanstvena područja
Biologija

POVEZANOST RADA