中文摘要：

测定了中国沿海角木叶鲽4个群体57个体的线粒体控制区序列,在长度为549 bp的线粒体控制区序列中,检测到3个插入/缺失位点,24个变异位点（包括11个简约信息位点）,共出现了37个单倍型,其中9个为共享单倍型。角木叶鲽整体的单倍型多样度（Hd）和核苷酸多态度（P）i结果分别为0.979±0.008和0.00655±0.0037,呈现出高单倍型多样度和低核苷酸多态度分布模式。中性检验结果显示,角木叶鲽种群的Fu’s Fs为显著负值,核苷酸不配对分析呈现单峰分布,表明角木叶鲽在历史上经历过种群扩张事件。群体内个体间的平均遗传距离为0.0065,群体间遗传分化指数都为负值（-0.0067~-0.0460）但不显著（P〉0.1）,AMOVA分析显示遗传变异主要集中在群体内个体间（102.15%）,均表明我国近海角木叶鲽种群无明显的分化,可以作为一个渔业管理单位加以保护和利用。

英文摘要：

The length of 549 bp mtDNA control region sequences of 57 individuals from 4 Pleuronichthys cornutus populations in the coastal waters of China was determined. 3 insert/deletion sites, 24 variable sites （including 11 parsinomy-informative sites） and 37 haplotypes were detected, of which 9 haplotypes were shared among populations. The global haplotype diversity （Hd） and nucleotide diversity （P/） were 0.979：1：0.008 and 0.0061＋0.0037 respectively, indicating a high haplotype diversity （Hd） and a low nucleotide diversity （P/）. The significant negative values of neutral test of Fu＇s Fs and the unimodal mismatch distribution revealed a historical population expansion. As the average genetic distances within 4 populations were 0.0065, and genetic differentiation index （Fst） were negative （-0.0067~-0.0460） but not significant （P 〉 0.1 ＂~. and l~he m~ority genetic variation （102.15%） occurred within populations （102.15%） in AMOVA analysis~, suggesting that Pleuronichthys cornutus populations in the coastal waters of China were not significantly differentiated and might be protected as a single management unit.