Journal article
Phylogenetic relationships and molecular dating of the major groups of catfishes of the Neotropical superfamily Pimelodoidea (Teleostei, Siluriformes)
Proceedings of the Academy of Natural Sciences of Philadelphia, v 162(1)
01 Mar 2013
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Abstract
We present a molecular phylogenetic study of the major lineages of the Pimelodoidea, the second largest and most widespread clade of Neotropical catfishes, in which we examine the affinities of two incertae sedis genera, Conorhynchos and Plzreatobius with respect to 24 pimelodoid terminals within the families Pimelodidae, Pseudopimelodidae and Heptapteridae. We include Diplomystes mesentbrinus and 11 siluroid, non-pimelodoid taxa as outgroups. Data are more than six kilobases of aligned sequence from the rag1 and rag2 nuclear genes and 12S and 16S rDNA from the mitochondrial genome. Results provide strong support for the monophyly of Pimelodoidea, for the families Pimelodidae, Pseudopimelodidae and Heptapteridae individually, and for the interrelationships described in parenthetical notation as ((Conorhynchos, Heptapteridae), (Phreatobius, Pseudopimelodidae, Pimelodidae)). Within this latter group, analysis of the data using parsimony favors ((Phreatobius, Pseudopimelodidae), Pimelodidae), while Bayesian favors (Phreatobius, (Pseudopimelodidae, Pimelodidae)). However, comparison of tree length in parsimony and Bayes Factor comparisons shows that no resolution of this three-taxon statement is significantly better supported. We added the rag1 and rag2 sequences of taxa newly sequenced for this study to a previously published dataset of 111 catfish terminals. Fossil-calibrated, Bayesian relaxed clock analysis of divergence times indicate that pimelodoids are likely to have originated between 110 and 95 Ma in the Albian or Cenomanian and that the five major lines of pimelodoids split off soon afterward during a period of explosive diversification for siluroid catfishes.
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Details
- Title
- Phylogenetic relationships and molecular dating of the major groups of catfishes of the Neotropical superfamily Pimelodoidea (Teleostei, Siluriformes)
- Creators
- John P. Sullivan - Cornell UniversityJanice Muriel-Cunha - Universidade Federal do ParáJohn G. Lundberg - Academy of Natural Sciences of Drexel University
- Publication Details
- Proceedings of the Academy of Natural Sciences of Philadelphia, v 162(1)
- Publisher
- Academy of Natural Sciences of Philadelphia
- Number of pages
- 22
- Grant note
- 1004765 / NSF Research Coordination Network; National Science Foundation (NSF) DEB 0315963 / U.S. National Science Foundation; National Science Foundation (NSF) 2004/2453-3 / FAPESP; Fundacao de Amparo a Pesquisa do Estado de Sao Paulo (FAPESP) DEB 9300151; DEB 0089612 / NSF; National Science Foundation (NSF)
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Biodiversity, Earth, and Environmental Science (BEES); Academy of Natural Sciences of Drexel University
- Web of Science ID
- WOS:000319024600006
- Scopus ID
- 2-s2.0-84877358402
- Other Identifier
- 991019335240104721
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- Collaboration types
- Domestic collaboration
- International collaboration
- Web of Science research areas
- Biodiversity Conservation
- Ecology