PDF(Pubmed)
Abstract：
In this study, the traditional morphometry method was applied to analyze the standardized measurements together with the meristic counts so as to provide supplementary information for fishery biology, population assessment, and fishery resources protection of C. myriaster. The results of one-way analysis of variance (ANOVA) showed that the greatest divergence was observed between the Dalian and Qingdao populations, whereas the smallest difference was found between the Lianyungang and Zhoushan populations. Statistical difference in tail length (TAL) was detected between all populations. The morphological traits with high C.D values were mostly related to body weight (BW), confirming greater potential variations of these weight-related traits. Principal component analysis (PCA) extracted 7 principal components (PCs) with eigenvalues greater than 1, and the cumulative contribution rate was 72.790%. The results of cluster analysis, together with the PCA and DFA, supported separating the populations into three groups linked with their geographic distribution and their specific environment localization. Considering the particularity of the natural environment of the Bohai Sea and the sophisticated oceanic circulations of the Shandong Peninsula, the relationships of C. myriaster populations in the northwest Pacific Ocean along the China coast were closely related to their geographical distributions and oceanic circulations.
摘要：
在这项研究中,应用传统的形态计量学方法对标准化的测量值与综合计数进行分析，为渔业生物学提供补充信息，人口评估,和渔业资源保护。单因素方差分析(ANOVA)结果表明,大连和青岛种群差异最大,而连云港和舟山种群之间的差异最小。在所有群体之间检测到尾部长度(TAL)的统计学差异。高C.D值的形态性状主要与体重(BW)有关,证实了这些体重相关性状的更大潜在变异。主成分分析(PCA)提取了7个特征值大于1的主成分(PCs),累计贡献率为72.790%。聚类分析的结果，连同PCA和DFA，支持将种群分为与地理分布和特定环境定位相关的三组。考虑到渤海自然环境的特殊性和山东半岛复杂的海洋环流，中国沿海西北太平洋的C.myriaster种群的关系与其地理分布和海洋环流密切相关。
