A new species of Ancistrus (Siluriformes: Loricariidae) from Tapajós and Xingu basins, Brazil

IF 2 4区生物学 Q1 ZOOLOGY

Neotropical Ichthyology Pub Date : 2022-01-01 DOI:10.1590/1982-0224-2021-0129

Emanuel B. Neuhaus, M. R. Britto, J. Birindelli, L. Sousa

引用次数: 2

Abstract

Abstract A new Ancistrus species is described from Tapajós and Xingu river basins. It is distinguished from its congeners by the singular body color pattern, consisting of dark vermiculated stripes almost all over the body, and also by combination of features as a narrow head, large internostril distance, and absence of rows of enlarged odontodes on the lateral plates. In addition, the new species is distinguished from congeners that inhabit the rio Tapajós basin by the presence of a fully-developed adipose fin (vs. adipose fin absent in Ancistrus parecis and A. tombador, and vestigial adipose fin or absent in A. krenakarore). It differs from A. ranunculus, also from the rio Xingu, by the color pattern, smaller body size, smaller gill opening, and narrower cleithral width. The new taxon adds a new record to the list of species shared among the Xingu and Tapajós basins.

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文章标题巴西Tapajós和新古盆地一新种(志留虫目:蠓科)

摘要:在Tapajós和新谷河流域发现了一新种。它与同类的不同之处在于其独特的身体颜色模式，由几乎全身的深色网状条纹组成，还有一些特征的组合，如狭窄的头部，大的鼻孔间距，以及侧板上没有一排排放大的齿状突。此外，该新种与栖息在里约热内卢Tapajós盆地的同系物相比，具有完全发育的脂肪鳍(相比之下，Ancistrus parrecis和a . tombador没有脂肪鳍，a . krenakarore没有退化的脂肪鳍)。它不同于A. ranunculus，也不同于里约热内卢xinu，颜色图案，体型较小，鳃开口较小，锁骨宽度较窄。这一新分类群为新古盆地和Tapajós盆地共有的物种列表增添了新的记录。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Neotropical Ichthyology 生物-动物学

CiteScore

2.80

自引率

17.60%

发文量

审稿时长

6-12 weeks

期刊介绍： Neotropical Ichthyology is the official journal of the Sociedade Brasileira de Ictiologia (SBI). It is an international peer-reviewed Open Access periodical that publishes original articles and reviews exclusively on Neotropical freshwater and marine fishes and constitutes an International Forum to disclose and discuss results of original research on the diversity of marine, estuarine and freshwater Neotropical fishes. -Frequency: Four issues per year published only online since 2020, using the ‘rolling pass’ system, which posts articles online immediately as soon as they are ready for publication. A searchable and citable Digital Object Identifier (DOI) is assigned to each article immediately after online publication, with no need to await the issue’s closing. -Areas of interest: Biology, Biochemistry and Physiology, Ecology, Ethology, Genetics and Molecular Biology, Systematics. -Peer review process: The Editor-in-Chief screens each manuscript submitted to Neotropical Ichthyology to verify whether it is within the journal’s scope and policy, presents original research and follows the journal’s guidelines. After passing through the initial screening, articles are assigned to a Section Editor, who then assigns an Associate Editor to start the single blind review process.