For statistic analysis, normality of the data was determined
using Shapiro-Wilks test. When non-normally distributed, the data
was log-transformed to reduce deviations from normality and
distortion effects caused by allometric relationships. Population
means were compared by multivariate analysis of variance
(MANOVA) to verify whether the samples and sexes from among
the groups differed in overall size. Since significant variations
between the sexes and samples were not observed (Table 2), we
pooled males and females in subsequent analyses.