Academic Journal
A new genus and species of miniature tridentine catfish from the Amazon basin (Siluriformes: Trichomycteridae)
| العنوان: | A new genus and species of miniature tridentine catfish from the Amazon basin (Siluriformes: Trichomycteridae) |
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| المؤلفون: | Alessio Datovo, Luz Ochoa, George Vita, Paulo Presti, William M. Ohara, Mario C. C. de Pinna |
| المصدر: | Neotropical Ichthyology, Vol 21, Iss 3 (2023) |
| بيانات النشر: | Sociedade Brasileira de Ictiologia |
| سنة النشر: | 2023 |
| المجموعة: | Directory of Open Access Journals: DOAJ Articles |
| مصطلحات موضوعية: | Freshwater, Loricarioidei, Ostariophysi, Systematics, Taxonomy, Zoology, QL1-991 |
| الوصف: | A new miniature tridentine catfish is described from the rio Purus drainage, Amazon basin, Brazil. It differs from all other tridentines in having several unique autapomorphies: conspicuous anteromedial protuberance in the snout; set of symphyseal premaxillary and dentary teeth inclined posteromedially; distal process of the hyomandibula directed anteriorly; rod-like orbitosphenoid ossified only ventral to the optic nerve; mesethmoid cornua inclined ventrolaterally; opercular and interopercular odontodophores separated by a large interspace; basipterygia fused sagittally; and conspicuous dark brown horizontal stripe in the middle of the caudal fin. The new taxon is hypothesized to be sister to the clade formed by Tridensimilis and Tridens. A detailed osteological description of the new taxon is provided based on X-ray microcomputed tomography (µCT-scans) data and on cleared and stained specimens. Our analysis also reveals that “Tridens” brevis, an enigmatic species that has been indecisively assigned to three different tridentine genera over the past 134 years, belongs to Tridentopsis.Consequently, Tridensimilis is a monotypic genus that currently includes only T. venezuelae. |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | English |
| تدمد: | 1982-0224 |
| Relation: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252023000300210&tlng=en; https://doaj.org/toc/1982-0224; https://doaj.org/article/a4493bd6c8064d3dae72fa640cee5bd6 |
| DOI: | 10.1590/1982-0224-2023-0076 |
| الاتاحة: | https://doi.org/10.1590/1982-0224-2023-0076 https://doaj.org/article/a4493bd6c8064d3dae72fa640cee5bd6 |
| رقم الانضمام: | edsbas.5C582698 |
| قاعدة البيانات: | BASE |
Full Text Finder | تدمد: | 19820224 |
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| DOI: | 10.1590/1982-0224-2023-0076 |