Using bivariate and multivariate techniques we evaluated sexual size dimorphism in 13 body-related and six head-related metrics from 99 live specimens of the Lorestan newt, Neurergus kaiseri. Analyses of variance of 12 metrics showed that average sizes for all these characters in females are significantly (P<0.05) greater than in males. However, one character (vent length) is larger in males than females (P<0.001). Evaluation of 13 metrics showed that average size dimorphism is apparent in 10 characters with nine characters showing these differences at P≤0.01 and one character at P<0.05 confidence levels. Principal Components Analysis of external characters provided a good separation of males and females. Although body measurements gave a clear pattern of differences between the sexes in N. kaiseri, head measurements showed no such distinctions.
کلید واژگان :Neurergus kaiseri, Principal Component Analysis (PCA), sexual size dimorphism, southwestern Iran, cloaca
ارزش ریالی : 300000 ریال
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