Please use this identifier to cite or link to this item: https://biore.bio.bg.ac.rs/handle/123456789/2000
Title: Variation in skull size and shape in a newt species with male-biased sexual dimorphism
Authors: Cvijanović, Milena
Üzüm, Nazan
Ivanović, Ana 
Avci, Aziz
Özcan, Çiçek Gümüş
Olgun, Kurtuluş
Keywords: Banded newts;Geometric morphometrics;Ommatotriton ophryticus;Rensch’s rule
Issue Date: 1-Jan-2017
Project: Diversity of the amphibians and reptiles on the Balkan Peninsula: evolutionary and conservation aspects 
FEF-11004
Journal: Herpetological Journal
Abstract: 
© 2017, British Herpetological Society. All rights reserved. According to Rensch’s rule, sexual size dimorphism (SSD) increases with body size in groups where males are the larger sex and decreases when females are larger. The genus Ommatotriton represents a well-defined lineage with male-biased SSD within a group of Eurasian newts otherwise characterised by females being larger than males. In the present paper, we explore sexual dimorphism in skull size and shape for populations of the banded newt Ommatotriton ophryticus, applying geometric morphometrics to investigate size-dependent allometric shape variation. Sexual dimorphism in skull size was not correlated with the size of males, rejecting Rensch’s rule. Sexual dimorphism in skull shape of O. ophryticus is entirely due to allometric, size-related shape changes between sexes.
URI: https://biore.bio.bg.ac.rs/handle/123456789/2000
ISSN: 0268-0130
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