Vendace (Coregonus albula) and least cisco (Coregonus sardinella) are a single species: evidence from revised data on mitochondrial and nuclear DNA polymorphism
| Autor: | Elena A. Borovikova, V. S. Artamonova |
|---|---|
| Rok vydání: | 2021 |
| Předmět: | |
| Zdroj: | Hydrobiologia. 848:4241-4262 |
| ISSN: | 1573-5117 0018-8158 |
| DOI: | 10.1007/s10750-021-04635-5 |
| Popis: | This study elucidates the phylogenetic relationships of three coregonid species: the vendace (Coregonus albula), least cisco (Coregonus sardinella), and peled (Coregonus peled). The nucleotide sequences of two mitochondrial DNA (mtDNA) regions, subunit I of the NADH dehydrogenase gene (nd1, 975 bp) and a fragment of the cytochrome oxidase subunit I gene (co1, 527 bp), were studied in representatives of these species from different populations. In addition, the polymorphism of a fragment of nuclear recombination-activating gene 1 (rag1, 1093 bp) was investigated. The species were not differentiated with respect to the co1 sequence, and a species-specific nucleotide substitution in the rag1 sequence was found in the peled. Phylogenetic analysis of the nd1 sequences confirmed that C. albula and C. sardinella are actually a single Eurasian species, C. albula, with European and Siberian populations being polyphyletic groups. The peled is closely related to the vendace and least cisco is apparently a separate monophyletic species that is poorly differentiated from C. albula. According to published data, reproductive isolation of the peled was determined by chromosome rearrangements that led to a change in the system of sex determination rather than by the accumulation of nucleotide substitutions. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|