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首页> 外文期刊>Journal of Parasitology >DESCRIPTION AND MORPHOMETRICAL VARIABILITY OF A NEW SPECIES OF LIGOPHORUS AND OF LIGOPHORUS CHABAUDI (MONOGENEA: DACTYLOGYRIDAE) ON MUGIL CEPHALUS (TELEOSTEI) FROM THE MEDITERRANEAN BASIN
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DESCRIPTION AND MORPHOMETRICAL VARIABILITY OF A NEW SPECIES OF LIGOPHORUS AND OF LIGOPHORUS CHABAUDI (MONOGENEA: DACTYLOGYRIDAE) ON MUGIL CEPHALUS (TELEOSTEI) FROM THE MEDITERRANEAN BASIN

机译：来自地中海盆地的莫吉尔头足纲（TELEOSTEI）的一种新的天牛和天牛Chabaudi（MONOGENEA：DACTYLOGYRIDAE）的描述和形态变化

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摘要

A comparative morphological study of specimens of Ligophorus spp. from Mugil cephalus in western Mediterranean and the Black Sea localities has been carried out, indicating the presence of 2 distinct forms, i.e., Ligophorus chabaudi and Ligophorus cephali n. sp. A detailed description of the latter and an up-to-date redescription of L. chabaudi are provided. The existence of these 2 morphological species was additionally supported by principal component analysis based on 19 metric characters of 87 specimens arranged in samples defined by parasite species and geographical locality. The analysis indicated consistent differences between species but not between localities; this pattern was well supported by jackknife procedures. Linear discriminant analyses showed that the main metric differences between the 2 species were attributable to the lengths of the dorsal and ventral bars and to the uncinulus length; use of the first 2 variables was enough to allocate all specimens studied to either form. The erection of L. cephali n. sp. raises the number of sympatric Mediterranean species of Ligophorus on M. cephalus to 3. The known geographical ranges of these species are compared.
机译：芒属标本的比较形态学研究。已经在地中海西部和黑海地区进行了Mugil cephalus的分离，表明存在两种不同的形式，即Ligophorus chabaudi和Ligophorus cephali n。 sp。提供了后者的详细描述和chabaudi的最新描述。这两种形态学物种的存在还得到了主要成分分析的支持，该分析基于寄生虫物种和地理区域所定义的样本中排列的87个标本的19个度量标准特征。分析表明，物种之间存在一致的差异，但各地之间没有差异。折刀程序很好地支持了这种模式。线性判别分析表明，这两个物种之间的主要度量差异是由于背侧和腹侧筋的长度以及单侧长度引起的。使用前两个变量就足以将所有研究的样本分配为任一形式。头孢乳杆菌的勃起。 sp。可以将头颅分枝杆菌上同属的地中海象牙属的种类增加到3种。比较这些种类的已知地理范围。

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