Analysis of mtDNA and nuclear markers points to homoploid hybrid origin of the new species of Far Eastern redfins of the genus Tribolodon (Pisces, Cyprinidae)

The nucleotide sequences of two mitochondrial genes (cytochrome c oxidase subunit I, COI, and cytochrome b, cyt b) and four nuclear genes (growth hormone gene GH1, ribosomal protein S7 gene RP1, recombination activating gene RAG1, and rhodopsin gene RH) from the Far Eastern redfins of the genus Trib...

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Bibliographic Details
Published in:Russian journal of genetics 2015-11, Vol.51 (11), p.1075-1087
Main Authors: Polyakova, N. E, Semina, A. V, Brykov, V. A
Format: Article
Language:English
Subjects:
Animal Genetics
Animal Genetics and Genomics
Biomedical and Life Sciences
Biomedicine
cytochrome b
cytochrome-c oxidase
genes
Human Genetics
hybridization
hybrids
Microbial Genetics and Genomics
mitochondrial DNA
new species
niches
nucleotide sequences
rhodopsin
sequence analysis
somatotropin
Tribolodon
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Summary:The nucleotide sequences of two mitochondrial genes (cytochrome c oxidase subunit I, COI, and cytochrome b, cyt b) and four nuclear genes (growth hormone gene GH1, ribosomal protein S7 gene RP1, recombination activating gene RAG1, and rhodopsin gene RH) from the Far Eastern redfins of the genus Tribolodon were examined to clarify the status of the southern form of T. hakonensis. Nucleotide sequence analysis of the mitochondrial genes showed differences of 2.6% between individuals of T. hakonensis inhabiting the north and south of the range. Analysis of the nuclear genes showed that Tribolodon sp. (southern form of T. hakonensis) has a mosaic of nuclear genes received from the Pacific redfin T. brandtii and big-scaled redfin T. hakonensis. It is suggested that the new species could have formed as a result of homoploid hybridization between the true T. hakonensis (by original description) and T. brandtii, which probably made it possible for this species to occupy a new ecological niche.
ISSN:1022-7954
1608-3369
DOI:10.1134/s1022795415110137