Differentiation in morphology and electrical signalling in four species of para- and sympatric Marcusenius (Teleostei: Mormyridae) from Côte d’Ivoire, West Africa

Differentiation in morphology and electrical signalling in four species of para- and sympatric Marcusenius (Teleostei: Mormyridae) from Côte d’Ivoire, West Africa
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西非科特迪瓦四种旁域和同域 Marcusenius(Teleostei:Mormyridae)形态和电信号的分化

DOI:
10.1080/10236244.2013.796161
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发表时间:
2013
影响因子:
1
通讯作者:
Kramer
Kramer
中科院分区:
生物学4区
文献类型:
--
作者:
Kramer

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Marcus enius Gill,1862种采集自西非科特迪瓦的班达马河和科莫河。11月是从弗洛姆分化出来的。Senegalens(Steindachner,1870)、Marusenius ussheri(Günther,1867)和M.电子器官放电(EOD)中的呋喃西林(Pellegrin,1920),以及来自所有其他西非同系物的形态。主成分分析表明,四个科特迪瓦树种之间存在显著的形态分化。主成分1受影响游泳力和机动性的性状的影响最大。形态上最相似的一对,白花假单胞菌和白纹伊蚊。谢天谢地。Nov.)的区别在于它们的EOD波形和后者的肛鳍基上没有的性别二型性。这个系统是一个机会,可以研究同种异种之间的特征置换的微调可以走多远。
MarcuseniusGill, 1862 species were sampled from the Bandama River and the Comoé River in Côte d’Ivoire, West Africa.Marcusenius gracilissp. nov. was differentiated fromM. senegalensis(Steindachner, 1870),Marcusenius ussheri(Günther, 1867) andM. furcidens(Pellegrin, 1920) in electric organ discharges (EOD), and morphologically from all other West African congeners. Principal component analysis showed significant morphological differentiation among the four Ivorian species. Principal component 1 was loaded most strongly by characters affecting swimming power and manoeuvrability. The morphologically most similar pair,M. furcidensandM. gracilissp. nov., are distinguished by their EOD waveforms and a sexual dimorphism in the anal fin base in the latter not present in the former.M. ussheriis distinguished by a sexual dimorphism in its EOD waveform not observed in the other three species. This system is an opportunity to study how far the fine-tuning of character displacement among syntopic species can go.
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