Publication Type: | Journal Article |
Year of Publication: | 2007 |
Authors: | K. L. Ciborowski, Consuegra, S., C. de Leaniz, G., Beaumont, M. A., Wang, J., Jordan, W. C. |
Journal: | Biol LettBiol LettBiol Lett |
Volume: | 3 |
Pagination: | 554-7 |
Date Published: | Oct 22 |
Type of Article: | Research Support, Non-U.S. Gov't |
ISBN Number: | 1744-9561 (Print)1744-9561 (Linking) |
Accession Number: | 17650476 |
Keywords: | *Recombination, Genetic, Animals, Base Sequence, DNA, Mitochondrial/*genetics, Molecular Sequence Data, Salmo salar/*genetics, Trout/*genetics |
Abstract: | Recombination is thought to occur only rarely in animal mitochondrial DNA (mtDNA). However, detection of mtDNA recombination requires that cells become heteroplasmic through mutation, intramolecular recombination or 'leakage' of paternal mtDNA. Interspecific hybridization increases the probability of detecting mtDNA recombinants due to higher levels of sequence divergence and potentially higher levels of paternal leakage. During a study of historical variation in Atlantic salmon (Salmo salar) mtDNA, an individual with a recombinant haplotype containing sequence from both Atlantic salmon and brown trout (Salmo trutta) was detected. The individual was not an F1 hybrid but it did have an unusual nuclear genotype which suggested that it was a later-generation backcross. No other similar recombinant haplotype was found from the same population or three neighbouring Atlantic salmon populations in 717 individuals collected during 1948-2002. Interspecific recombination may increase mtDNA variability within species and can have implications for phylogenetic studies. |
Short Title: | Biology lettersBiology letters |
Alternate Journal: | Biology letters |