| Full text | |
| Author(s): |
Total Authors: 2
|
| Affiliation: | [1] Univ Brasilia, Inst Ciencias Biol, Dept Ciencias Fisiol, Lab Anat Comparat Vertebrados, Campus Univ Darcy Ribeiro, BR-70910900 Brasilia, DF - Brazil
[2] Univ Sao Paulo, Museu Zool, Secao De Peixes, SP - Brazil
Total Affiliations: 2
|
| Document type: | Journal article |
| Source: | Journal of Fish Biology; v. 93, n. 5, p. 901-916, NOV 2018. |
| Web of Science Citations: | 1 |
| Abstract | |
A new species of Pimelodella is described from several right-bank tributaries of the Rio Madeira basin in Amazonas and Rondonia states, Brazil. The new species differs from all congeners by the supraoccipital process not reaching the anterior nuchal plate, 43-45 total vertebrae, maxillary barbels reaching between adpressed anal-fin terminus and caudal-fin origin, epiphyseal branch of supraorbital laterosensory canal emerging as two distantly-positioned pores and a conspicuous black mark at distal third of dorsal fin, between dorsal-fin spine and third branched ray. A detailed description of the cephalic laterosensory system of the new species is provided and contrasted with other Siluriformes and Ostariophysi. A discussion regarding homology of the catfish upper pectoral girdle bones is offered in light of modifications of the postotic and supratemporal lateral-line canals. Based on the placement of the pterotic branch of the postotic canal, it is concluded that the extrascapula is fused to the pterotic in Siluriformes. Results presented herein offer an example of how lateral-line morphology can be used as a compelling source of evidence to help determine homology of cranial and upper pectoral girdle bones. (AU) | |
| FAPESP's process: | 11/50282-7 - An inventory of the Characiform fish fauna (Teleostei, Ostariophysi) from South America |
| Grantee: | Naercio Aquino Menezes |
| Support type: | BIOTA-FAPESP Program - Thematic Grants |
| FAPESP's process: | 13/26548-2 - Pores of the cephalic laterosensory system of Ostariophysi (Teleostei): an in-group and out-group analysis |
| Grantee: | Murilo Nogueira de Lima Pastana |
| Support type: | Scholarships abroad - Research Internship - Master's degree |
| FAPESP's process: | 15/26804-4 - Integrating morphological and molecular data in the systematics of three siluriform subgroups: subfamily Copionodontinae (Trichomycteridae), genus Pimelodella (Heptapteridae) and family Cetopsidae |
| Grantee: | Mario Cesar Cardoso de Pinna |
| Support type: | Regular Research Grants |
| FAPESP's process: | 16/19075-9 - Diversity and evolution of Gymnotiformes (Teleostei, Ostariophysi) |
| Grantee: | Naercio Aquino Menezes |
| Support type: | Research Projects - Thematic Grants |
| FAPESP's process: | 13/18623-4 - Taxonomic revision of Pimelodella (Siluriformes: Heptapteridae): an integrative proposal to delimit species using a multidisciplinary strategy |
| Grantee: | Veronica de Barros Slobodian Motta |
| Support type: | Scholarships in Brazil - Doctorate |
| FAPESP's process: | 12/22685-2 - Canals and pores of the cephalic laterosensory system of Characiformes (Ostariophysi): anatomy and phylogenetic information. |
| Grantee: | Murilo Nogueira de Lima Pastana |
| Support type: | Scholarships in Brazil - Master |
| FAPESP's process: | 16/01073-0 - Taxonomy of Pimelodella Eigenmann & Eigenmann (1888): Comparative Anatomy and delimitation of Pimelodella |
| Grantee: | Veronica de Barros Slobodian Motta |
| Support type: | Scholarships abroad - Research Internship - Doctorate |