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A Phenotypic Point of View of the Adaptive Radiation of Crested Newts (Triturus cristatus Superspecies, Caudata, Amphibia)
Joint Authors
Ivanović, Ana
Kalezić, Miloš
Džukić, Georg
Source
International Journal of Evolutionary Biology
Issue
Vol. 2012, Issue 2012 (31 Dec. 2012), pp.1-9, 9 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2012-01-16
Country of Publication
Egypt
No. of Pages
9
Main Subjects
Abstract EN
The divergence in phenotype and habitat preference within the crested newt Triturus cristatus superspecies, examined across different ontogenetic stages, provides an excellent setting to explore the pattern of adaptive radiation.
The crested newts form a well-supported monophyletic clade for which at least the full mitochondrial DNA phylogeny is resolved.
Here we summarise studies that explored the variation in morphological (larval and adult body form, limb skeleton, and skull shape) and other phenotypic traits (early life history, developmental sequences, larval growth rate, and sexual dimorphism) to infer the magnitude and direction of evolutionary changes in crested newts.
The phenotypic traits show a high level of concordance in the pattern of variation; there is a cline-like variation, from T.
dobrogicus, via T.
cristatus, T.
carnifex, and T.
macedonicus to the T.
karelinii group.
This pattern matches the cline of ecological preferences; T.
dobrogicus is relatively aquatic, followed by T.
cristatus.
T.
macedonicus, T.
carnifex, and the T.
karelinii group are relatively terrestrial.
The observed pattern indicates that phenotypic diversification in crested newts emerged due to an evolutionary switch in ecological preferences.
Furthermore, the pattern indicates that heterochronic changes, or changes in the timing and rate of development, underlie the observed phenotypic evolutionary diversification.
American Psychological Association (APA)
Ivanović, Ana& Džukić, Georg& Kalezić, Miloš. 2012. A Phenotypic Point of View of the Adaptive Radiation of Crested Newts (Triturus cristatus Superspecies, Caudata, Amphibia). International Journal of Evolutionary Biology،Vol. 2012, no. 2012, pp.1-9.
https://search.emarefa.net/detail/BIM-494953
Modern Language Association (MLA)
Ivanović, Ana…[et al.]. A Phenotypic Point of View of the Adaptive Radiation of Crested Newts (Triturus cristatus Superspecies, Caudata, Amphibia). International Journal of Evolutionary Biology No. 2012 (2012), pp.1-9.
https://search.emarefa.net/detail/BIM-494953
American Medical Association (AMA)
Ivanović, Ana& Džukić, Georg& Kalezić, Miloš. A Phenotypic Point of View of the Adaptive Radiation of Crested Newts (Triturus cristatus Superspecies, Caudata, Amphibia). International Journal of Evolutionary Biology. 2012. Vol. 2012, no. 2012, pp.1-9.
https://search.emarefa.net/detail/BIM-494953
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-494953