Journal article
Description and phylogenetic position of a new species of Rhyacoglanis (Siluriformes: Pseudopimelodidae) from the Jamanxim River basin
NEOTROPICAL ICHTHYOLOGY, v 21(3), e230051
2023
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Abstract
In this study, a new species of Rhyacoglanis is described from the Jamanxim River basin, Tapajos River basin. The new species differs from congeners based on the combination of the following diagnostic characters: two oblique dark bands formed by an agglomerate of melanophores on the predorsal region; dorsal confluence between the dark subdorsal and subadipose bands in large juveniles and adults; ventral confluence between the dark subadipose and caudal peduncle bands; body without conspicuous dark brown spots; complete dark band on caudal peduncle; body with three dark bands; a thin dark caudal-fin band; pectoral-fin spine with anterior serrae distributed along the entire margin; the posterior tip of the post-cleithral process reaching vertical through the base of the dorsal-fin spine; and hypural 5 free of hypural 3 and 4 and pointed caudal-fin lobes. Additionally, our molecular phylogenetic results using ultraconserved elements (UCEs) corroborate the new species as Rhyacoglanis and sister to an undescribed species of Rhyacoglanis from the Xingu River basin. Moreover, as pointed out in previous studies, we confirm Cruciglanis as a sister group to Pseudopimelodus plus Rhyacoglanis.
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Details
- Title
- Description and phylogenetic position of a new species of Rhyacoglanis (Siluriformes: Pseudopimelodidae) from the Jamanxim River basin
- Publication Details
- NEOTROPICAL ICHTHYOLOGY, v 21(3), e230051
- Publisher
- SOC BRASILEIRA ICTIOLOGIA; SAO PAULO
- Grant note
- Thanks to A. C. Dias, C. S. Souza, C. Souto, N. Flausino Jr., R. Devide, and T. Faria for their help during field expeditions. Thanks also to Bruno F. Morales for helping with the map construction. We also thank the research support from Coordenacao de Aperfeicoamento de Pessoal de Nivel Superior (CAPES) (JLCR), Conselho Nacional de Desenvolvimento Cientifico e Tecnologico (CNPq, proc. #307951/2021-9 to OAS and proc. 306054/2006-0 to CO), and Fundacao de Amparo a Pesquisa do Estado de Sao Paulo (FAPESP) grant #2020/13433-6 (CO), grants #2021/12979-8 and #2022/13025-0 (GSCS).
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Drexel University
- Web of Science ID
- WOS:001156634700003
- Scopus ID
- 2-s2.0-85172680646
- Other Identifier
- 991021861308204721
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- Collaboration types
- Domestic collaboration
- International collaboration
- Web of Science research areas
- Zoology