{"refrec":{"BRefID":216555,"RR":"<b>Lin, C.-Y.; Lin, W.-W.; Kao, H-W.</b> (2012). The complete mitochondrial genome of the mackerel icefish, <i>Champsocephalus gunnari</i> (Actinopterygii: Channichthyidae), with reference to the evolution of mitochondrial genomes in Antarctic notothenioid. <i>Zool. J. Linn. Soc. 165(3)</i>: 521-533. <a href=\"https://dx.doi.org/10.1111/j.1096-3642.2012.00820.x\" target=\"_blank\">https://dx.doi.org/10.1111/j.1096-3642.2012.00820.x</a>","BEntID":208304,"PublicFlag":1,"CheckedFlag":1,"wosflag":1,"vabbflag":0,"RefStringPartII":". <i>Zool. J. Linn. Soc. 165(3)</i>: 521-533. <a href=\"https://dx.doi.org/10.1111/j.1096-3642.2012.00820.x\" target=\"_blank\">https://dx.doi.org/10.1111/j.1096-3642.2012.00820.x</a>","DocTypID":8,"DocType":"Journal article","MarineFlag":1,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Lin, C.-Y.; Lin, W.-W.; Kao, H-W.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Lin, C.-Y.; Lin, W.-W.; Kao, H-W.","Englishabstract":"The mackerel icefish (<em>Champsocephalus gunnari</em> Lönnberg, 1905) is a ray-finned fish living in the Southern Ocean around Antarctica. We sequenced the complete mitochondrial (mt) genome of the mackerel icefish and a segment from <em>cytochrome b</em> to the control region (CR) in 32 individuals. The mt genome of the mackerel icefish was rearranged, containing two nicotinamide adenine dinucleotide (reduced form) <em>dehydrogenase subunit 6</em> (<em>ND6</em>), two <em>tRNA<sup>Glu</sup></em>, and two CRs. However, variations in numbers of <em>ND6</em> and <em>tRNA<sup>Glu</sup></em> were observed amongst individuals. These variations included type 1 (containing two <em>ND6</em> and two <em>tRNA<sup>Glu</sup></em>), type 2 (containing one <em>ND6</em>, one incomplete <em>ND6</em>, and one <em>tRNA<sup>Glu</sup></em>), and type 3 (containing one <em>ND6</em> and one <em>tRNA<sup>Glu</sup></em>). The gene orders of types 1 and 2, and variations in numbers of <em>ND6</em> and <em>tRNA<sup>Glu</sup></em> were not previously found in any Antarctic notothenioids, whereas type 3 is the same as that of <em>Racovitzia glacialis</em>. Phylogenetic analyses of CR DNA sequences showed that duplicated CRs of the same species formed a monophyletic group, suggesting that duplication of CRs occurred in each species. The frequent duplication of mt genomes in Antarctic notothenioids is an unusual feature in vertebrates. We propose that interspecific hybridization and impairment of mismatch repair might account for the high frequency of gene duplications and rearrangement of mt genomes in Antarctic notothenioids.","AbstractOtherLang":null,"BibLvlCode":"AS","StandardTitle":"The complete mitochondrial genome of the mackerel icefish, <i>Champsocephalus gunnari</i> (Actinopterygii: Channichthyidae), with reference to the evolution of mitochondrial genomes in Antarctic notothenioid","OrigTitleLangCode":"en","OrigTitleLangCodeExtended":"eng","OrigTitleLangID":15,"DateLastModified":{"date":"2026-06-11 01:31:45.785623","timezone_type":1,"timezone":"+02:00"},"UserAccessRight":null,"UserAccID":null,"AuthorKeywords":"Molecular phylogeny; Natural hybridization","OtherDescriptors":null,"Notes":null,"AnaPub":2012,"MonPub":null,"DateUpdate":"2020-11-04","DateCreate":"2012-07-02","SecASFANote":null,"ConfID":null,"PeerRev":1,"VlizCoreFlag":1,"WoScode":"WOS:000305685000003","VABBcode":null,"OpenAcc":0,"DOI":"10.1111/j.1096-3642.2012.00820.x"},"refs":null,"anarec":{"AnaID":216555,"PubliDate":2012,"Pagination":"521-533","XtraPublOfAnaID":null,"ISBN":null,"Volume":"165","Issue":"3","BRefMon":null,"BRefMonRR":null,"BRefXtra":null,"BRefXtraRR":null,"SerBRefID":45039,"SerRR":"Zoological Journal of the Linnean Society. Academic Press: London.  ISSN 0024-4082; e-ISSN 1096-3642","StandardTitleSer":"Zoological Journal of the Linnean Society","ISSN":"0024-4082","AbbrevSer":"Zool. J. Linn. 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