摘要
本文研究了两种鲤科鱼类,即分布于华南长江与西江的宽鳍鱲和马口鱼的不同线粒体DNA谱系之间的体形差异。近期基于线粒体DNA的这两个物种的系统发育分析认为这两个类元内包含多个谱系(宽鳍鱲A-D和马口鱼1-5)。本文采用几何形态度量学的方法研究了这些不同线粒体DNA谱系间是否存在体形方面的差异。在宽鳍鱲的4个不同的线粒体DNA谱系中,有3个被纳入本研究内容。结果显示:在宽鳍鱲的3个线粒体DNA谱系中,2个具有体形的差异。在马口鱼的5个线粒体DNA谱系中,3个被纳入本文的研究。结果显示所有3个谱系均存在体形差异。因此,线粒体DNA的谱系差异很大程度上表现在谱系间的体形差异方面,表明线粒体DNA谱系可能对应于不同的物种。
Recent advances in molecular methods have revealed many new lineages within taxa which formerly were seen as one distinct group （Arise, 2000 ; Scotland et al., 2003）. Some of these new lineages are described without data on the shape and morphology of the organism. Shape and morphology provide a lot of ecological information that might help to explain the diversification of new lineages （Schluter, 2000） and the exclusion of shape and morphology subtracts important biological information.
出处
《动物学报》
SCIE
CAS
CSCD
北大核心
2006年第5期948-953,共6页
ACTA ZOOLOGICA SINICA
基金
This research was funded by the European Commission,I NCO-DEVprogram,project ECOCARP (New Native Fish Species for Asian Aqua- culture : Conserving Natural Genetic Reserves and Increasing Options for Sustainable Use of Aquatic Resources) ,contract number ICA4-CT-2001-10024 .
关键词
鲤科
几何形态度量学
种群差异
物种分化
Cyprinidae, Geometric morphometrics, population divergence, speciation
