坦噶尼喀湖鲶鱼的单系。(1)西奥氏大蠊(siluriforma: Claroteidae) bagrodella (Dactylogyridae)二新种

IF 0.7 4区生物学 Q4 ZOOLOGY

Zoologia Pub Date : 2022-01-01 DOI:10.1590/s1984-4689.v39.e22016

Archimède Mushagalusa Mulega, F. Muterezi Bukinga, John Francis Akoumba, P. M. Mulungula, A. Pariselle

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引用次数: 1

摘要

．在坦噶尼喀湖志留系单系鱼类研究的框架下，我们从Auchenoglanis occidentalis (Valenciennes, 1840)中描述了Bagrobdella Paperna, 1969年的两个新种。Bagrobdella vanhovei sp.十一月的特征是其MCO的形态在其同属植物中是独特的，呈非顶开口，而其他物种都有顶开口;Bagrobdella vansteenbergei sp.十一月的特征是其钩的大小几乎相同，其雄性交配器官具有独特的形状:亚顶开口，无膜环绕。形态学特征的多变量分析表明，除Bagrobdella parauchenoglanii Akoumba, Pariselle, Tombi & Bilong Bilong, 2017和Bagrobdella fraudulenta Euzet & Le Brun, 1990(但这两个物种很容易通过形态区分)外，新物种和已经描述的物种都具有很好的个别化特征，B. vanhovei sp. nov.具有很大的种内形态学差异。

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Monogeneans from Catfishes in Lake Tanganyika. I: Two new species of Bagrobdella (Dactylogyridae) from Auchenoglanis occidentalis (Siluriformes: Claroteidae)

. In the framework of the study of Siluriform fish monogeneans of Lake Tanganyika, we described two new species of Bagrobdella Paperna, 1969 from Auchenoglanis occidentalis (Valenciennes, 1840). Bagrobdella vanhovei sp. nov. is characterized by the morphology of its MCO which is unique among its congeners, presenting a non-terminal opening, whereas the other species have a terminal opening, and Bagrobdella vansteenbergei sp. nov. characterized by the size of its hooks, which are almost all of the same size, and its male copulating organ with a unique shape: a sub-terminal opening and no membrane surrounding. The Multivariate analysis done on morphometrical characters shows that the new and already described species are well individualized, except for Bagrobdella parauchenoglanii Akoumba, Pariselle, Tombi & Bilong Bilong, 2017 and Bagrobdella fraudulenta Euzet & Le Brun, 1990 (but these two species are easily distinguishable by their morphology), and that B. vanhovei sp. nov. has a great intra-specific morphometrical variation.

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Zoologia 生物-动物学

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期刊介绍： Zoologia, the scientific journal of the Sociedade Brasileira de Zoologia (SBZ), is an international peer-reviewed, open-access Zoological journal that publishes original research on systematics, evolution, taxonomy, nomenclature, biogeography, morphology, physiology, biology, ecology, symbiosis, conservation, behavior, genetics and allied fields. The journal, formerly known as Revista Brasileira de Zoologia, publishes original articles authored by both members and non-members of the Society. The manuscripts should be written exclusively in English.