Discordant patterns of morphological and molecular change in broadtail madtoms (genus Noturus)
| Autor: | J. M. Grady, Joseph M. Quattro, F. C. Rohde, R. Q. Bennetts |
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| Rok vydání: | 1999 |
| Předmět: |
Mitochondrial DNA
Molecular Sequence Data Zoology DNA Mitochondrial DNA Ribosomal Evolution Molecular Madtom RNA Ribosomal 16S Sequence Homology Nucleic Acid Genetics Animals Ecology Evolution Behavior and Systematics Catfishes Phylogeny biology Phylogenetic tree Base Sequence Cytochrome b Ecology NADH dehydrogenase Genetic Variation NADH Dehydrogenase biology.organism_classification Cytochrome b Group Southeastern United States Sister group RNA Ribosomal Molecular phylogenetics biology.protein Sequence Alignment Catfish |
| Zdroj: | Molecular ecology. 8(10) |
| ISSN: | 0962-1083 |
| Popis: | Two morphologically distinct forms of an undescribed madtom catfish (Noturus sp.) occur in the rivers and lakes of southeastern USA. ‘Lake’ broadtail madtoms are endemic to Lake Waccamaw and are probably related to nearby ‘river’ broadtail populations. To investigate phylogenetic relationships, we surveyed mitochondrial DNA (mtDNA) sequence variation in ‘lake’ and ‘river’ broadtails and other members of the genus Noturus. Mitochondrial rDNA data suggest a sister group relationship between broadtail madtoms and N. insignis, not N. leptacanthus as posited previously. Population-level analyses using additional mtDNA characters (NADH dehydrogenase subunit 2 (ND2) and cytochrome b (Cytb)) identified two highly divergent genetic lineages within broadtail madtoms that do not correspond to the morphological designations ‘river’ and ‘lake’. |
| Databáze: | OpenAIRE |
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