Contributions to Zoology, 74 (3/4) (2005)J. Alexandrino; N. Ferrand; J.W. Arntzen: Morphological variation in two genetically distinct groups of the golden-striped salamander, Chioglossa lusitanica (Amphibia: Urodela)

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Colour pattern

Colour pattern type 2 was the most common one in all examined populations, except for populations 10 and 11 in which type 3 was most frequent (Fig. 1).


Fig. 3. First two axes from PCA of six size adjusted morphometric variables in 18 populations of Chioglossa lusitanica. Population centroids and minimum convex polygons enclosing individual factor scores for group 1 and group 2 populations. Open dots and dashed polygon lines represent southern ‘group 1’ populations; solid dots and uninterrupted polygon lines represent northern ‘group 2’ populations.

Type 3 was present in all populations south of the Douro River. Other pattern types were present in some populations and not in others. Types other than type 2 were absent north of the Douro, with the exception of type 4 that was present, albeit at low frequency, in populations 12, 13 and 20.