Hybridisation, paternal leakage and mitochondrial DNA linearization in three anomalous fish (Scombridae)

Morgan, Jess A.T., Macbeth, Michael, Broderick, Damien, Whatmore, Paul, Street, Raewyn, Welch, David J., and Ovenden, Jennifer R. (2013) Hybridisation, paternal leakage and mitochondrial DNA linearization in three anomalous fish (Scombridae). Mitochondrion, 13 (6). pp. 852-861.

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Abstract

Using mitochondrial DNA for species identification and population studies assumes that the genome is maternally inherited, circular, located in the cytoplasm and lacks recombination. This study explores the mitochondrial genomes of three anomalous mackerel. Complete mitochondrial genome sequencing plus nuclear microsatellite genotyping of these fish identified them as Scomberomorus munroi (spotted mackerel). Unlike normal S. munroi, these three fish also contained different linear, mitochondrial genomes of Scomberomorus semifasciatus (grey mackerel). The results are best explained by hybridisation, paternal leakage and mitochondrial DNA linearization. This unusual observation may provide an explanation for mtDNA outliers in animal population studies.

Item ID: 31490
Item Type: Article (Research - C1)
ISSN: 1872-8278
Keywords: nuclear mitochondrial DNA; linear mtDNA; numt; Australia; mackerel
Funders: Australian Fisheries Research & Development Corporation, Queensland Government
Projects and Grants: Australian Fisheries Research and Development Corporation (2005/010)
Date Deposited: 18 Mar 2014 06:56
FoR Codes: 05 ENVIRONMENTAL SCIENCES > 0502 Environmental Science and Management > 050209 Natural Resource Management @ 100%
SEO Codes: 83 ANIMAL PRODUCTION AND ANIMAL PRIMARY PRODUCTS > 8302 Fisheries - Wild Caught > 830204 Wild Caught Fin Fish (excl. Tuna) @ 100%
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