Please use this identifier to cite or link to this item: https://biore.bio.bg.ac.rs/handle/123456789/3140
Title: Is mitochondrial DNA divergence of Near Eastern crested newts (Triturus karelinii group) reflected by differentiation of skull shape?
Authors: Ivanović, Ana 
Üzüm, Nazan
Wielstra, Ben
Olgun, Kurtuluş
Litvinchuk, Spartak
Kalezić, Miloš
Arntzen, Jan
Keywords: Cranium shape;Evolutionary history;Geometric morphometrics;Triturus cristatus superspecies
Issue Date: 1-Apr-2013
Project: 173043
NL-TAF 1245
RFBR.12-04-01277
MCB-N22n
Journal: Zoologischer Anzeiger
Abstract: 
The Eurasian Triturus karelinii group of crested newts comprises three distinct, geographically coherent mitochondrial DNA lineages, designated as the eastern, central and western lineage. These three lineages are genetically as diverged as other, morphologically well-differentiated crested newt species. However, on the ground of restricted morphological studies the three lineages have been considered morphologically uniform. We analyze skull shape in the T. karelinii group using geometric morphometric techniques and interpret the results in a phylogenetic context. We found a high divergence between populations and variable patterns of sexual dimorphism within mitochondrial DNA lineages, significant divergence in skull shape including significant divergence in allometry of the ventral skull side in females, and lack of concordance between the pattern of morphological and genetic variation within lineages and between lineages. The observed pattern indicates that ecologically mediated divergences could play an important role in the evolution of skull shape. Reconstruction of the evolutionary trajectory of the T. karelinii group indicates that the eastern lineage largely retains the ancestral skull shape and that the central and western lineages possess a derived skull shape. Skull shape does not clearly support the presence of three discrete geographical groups as suggested by the mitochondrial DNA data, but the amount of shape changes between T. karelinii lineages is similar to that between T. karelinii lineages and the outgroup species, T. macedonicus. © 2012 Elsevier GmbH.
URI: https://biore.bio.bg.ac.rs/handle/123456789/3140
ISSN: 0044-5231
DOI: 10.1016/j.jcz.2012.08.005
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