Journal article
Bony ornamentation of the catfish pectoral-fin spine: comparative and developmental anatomy, with an example of fin-spine diversity using the Tribe Brachyplatystomini (Siluriformes, Pimelodidae)
Proceedings of the Academy of Natural Sciences of Philadelphia, v 164(1), pp 177-212
2015
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Abstract
The anatomy and development of the siluriform pectoral-fin spine is described, illustrated and a terminology is suggested for its parts. Catfish pectoral-fin spines exhibit considerable diversity of size, shape, robustness, surface texture and, especially, details of the dentated or serrated anterior and posterior margins. This study illustrates the variety, and taxonomic and phylogenetic significance of pectoral-fin spine diversity in the South American goliath catfishes of the tribe Brachyplatystomini, family Pimelodidae, based on examination of spines of post-juvenile and adult specimens representing all eight living species of Brachyplatystoma and Platynematichthys. Unique pectoral-spine characters and character combinations serve to distinguish all eight species. Features of the pectoral-spines that change with growth are also described. Within the current phylogenetic framework of Pimelodidae, brachyplatystomines show character-state transformations and synapomorphies of the pectoral-fin spines that support hypotheses of monophyly for the subgenera Malacobagrus (B. rousseauxii, B. filamentosum, B. capapretum), and Goslinia (new usage) (B. platynemum, B. juruense), and also suggest a close relationship between B. tigrinum and subgenus Goslinia. Platynematichthys notatus and B. vaillantii retain relatively plesiomorphic features of the pectoral-fin spines.
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Details
- Title
- Bony ornamentation of the catfish pectoral-fin spine: comparative and developmental anatomy, with an example of fin-spine diversity using the Tribe Brachyplatystomini (Siluriformes, Pimelodidae)
- Creators
- Tyler Vanscoy - Academy of Natural Sciences of Drexel UniversityJohn G Lundberg - Academy of Natural Sciences of Drexel UniversityKyle R Luckenbill - Academy of Natural Sciences of Drexel University
- Publication Details
- Proceedings of the Academy of Natural Sciences of Philadelphia, v 164(1), pp 177-212
- Publisher
- Academy of Natural Sciences of Philadelphia
- Number of pages
- 36
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Academy of Natural Sciences of Drexel University
- Web of Science ID
- WOS:000365152200014
- Scopus ID
- 2-s2.0-84939138330
- Other Identifier
- 991019335231204721
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Data related to this publication, from InCites Benchmarking & Analytics tool:
- Web of Science research areas
- Biodiversity Conservation
- Ecology