结果表明，种群间16个形态指标中的15个具有显著性差异，而多元方差分析的种群间形态变异的差异性较小。
There are significant difference among 15 of 16 morphological traits, and small difference was shown among populations using the multivariate analysis.
在自然选择压力空间变化的作用下，广布种的形态、生理和生活史特征往往在不同地区的种群间发生地理变异。
Due to spatial variation of selection regime, morphological, physiological and life history traits of widely-distributed species may vary genetically among geographic populations.
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