Journal article
A phylogenetic analysis of the major groups of catfishes (Teleostei: Siluriformes) using rag1 and rag2 nuclear gene sequences
Molecular phylogenetics and evolution, v 41(3), pp 636-662
2006
PMID: 16876440
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
Higher-level relationships among catfishes were investigated by parsimony, maximum likelihood and Bayesian analyses of two nuclear genes across 110 catfish species representing 36 of 37 families and
Conorhynchos (family
incertae sedis). Analysis of 3660 aligned base pairs from the
rag1 and
rag2 genes confirms monophyly of Siluriformes, of most siluriform families and of a number of multifamily groups, some recognized, some novel. South American Loricarioidei are recovered as the sistergroup to other catfishes which are divided into Diplomystidae and Siluroidei. This result contrasts with the prevailing hypothesis that Diplomystidae is the sister to all other catfishes. Monophyly of Siluroidei is supported by
rag data including a unique three-codon deletion from
rag1. Deep within Siluroidei are 12 large, strongly supported groups with poorly resolved interrelationships. Five are single families: Cetopsidae, Plotosidae, Chacidae, Siluridae and Pangasiidae. Four others are monophyletic taxa ranked here as superfamilies: Clarioidea (Clariidae, Heteropneustidae), Arioidea (Ariidae, Anchariidae), Pimelodoidea (Pimelodidae, Pseudopimelodidae, Heptapteridae,
Conorhynchos), Ictaluroidea (Ictaluridae, Cranoglanididae). South American Doradoidea (Doradidae, Auchenipteridae) and Aspredinidae are a sistergroup pair. Sisoroidea (without Aspredinidae),
Ailia
+
Laides, Horabagridae, and Bagridae (without
Rita) form a large, predominantly Asian clade, “Big Asia.” Mochokidae, Malapteruridae, Amphiliidae, Claroteidae, and African schilbids are united as a species-rich African clade, “Big Africa.” The three large continental clades, “Big Asia,” “Big Africa” and Neotropical Loricarioidei suggest a prevalence of intracontinental diversification of catfishes. South America is the home of the Gymnotiformes, putative sistergroup of catfishes, plus two of the deepest siluriform clades, Loricarioidei and Diplomystidae, thus suggesting an ancient siluriform presence if not origin there. The
rag phylogeny does not identify any African-South American catfish clade. The well-known African-Asian relationships within families Clariidae and Bagridae are confirmed, as is the recently found North American-Asian relationship between Ictaluridae and Cranoglanididae.
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Details
- Title
- A phylogenetic analysis of the major groups of catfishes (Teleostei: Siluriformes) using rag1 and rag2 nuclear gene sequences
- Creators
- John P. Sullivan - Drexel UniversityJohn G. Lundberg - Drexel UniversityMichael Hardman - Natural History Museum of Los Angeles County
- Publication Details
- Molecular phylogenetics and evolution, v 41(3), pp 636-662
- Publisher
- Elsevier
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Academy of Natural Sciences of Drexel University
- Web of Science ID
- WOS:000242858900010
- Scopus ID
- 2-s2.0-33750965454
- Other Identifier
- 991019335320804721
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- Web of Science research areas
- Biochemistry & Molecular Biology
- Evolutionary Biology
- Genetics & Heredity