The complete mitochondrial genome of Anisakis simplex (Ascaridida: Nematoda) and phylogenetic implications

The complete mitochondrial genome of Toxascaris leonina: Comparison with other closely related species and phylogenetic implications

“…The A + T contents of the T. leonina mt genome (71.53%) is slightly higher than that of Baylisascaris species (Xie et al, 2011a,b) and it was well within the range of the A + T contents reported for other Ascaridomorpha nematodes (67.03-71.81%) ( Table 2). The protein-coding genes of T. leonina mt genome were inferred to end with an abbreviated stop codon, such as T and TA, which is consistent with the arrangement in the mt genomes of other ascaridoid nematodes (Li et al, 2008b;Kim et al, 2006;Okimoto et al, 1992;Lavrov and Brown, 2001). To explain the abbreviated stop codon in most of the reading frames, it is hypothesized that the after transcription and processing, mRNAs ending in T or TA are converted to TAA by polyadenylation (Ojala et al, 1981).…”

“…(Ascarididae) , Toxocara spp. (Toxocaridae) (Li et al, 2008b), A. simplex (Kim et al, 2006) and C. rudolphii B (Anisakidae) , but distinct from that of Ascaridia spp. (Ascaridiidae) (Liu et al, 2013b), suggesting that the Ascaridomorpha nematodes may have acquired such gene order independently.…”

“…Selected for comparison were concatenated amino acid sequences predicted from published mt genomes of key ascaridoid nematodes representing the Ascaridomorpha, including the superfamily Ascaridoidea [Ascaris suum , Anisakis simplex (Kim et al, 2006), Baylisascaris ailuri, Baylisascaris schroederi, Baylisascaris transfuga (Xie et al, 2011a) Baylisascaris procyonis (Xie et al, 2011b), Contracaecum rudolphii B , T. canis, T. cati, Toxocara malaysiensis (Li et al, 2008b)], and the superfamily Heterakoidea [Ascaridia galli, Ascaridia columbae and Ascaridia sp. (Liu et al, 2013b)], and the superfamily Seuratoidea [Cucullanus robustus (Park et al, 2011)], using Thelazia callipaeda (GenBank accession number JX069968) as an outgroup (Liu et al, 2013c).…”

The complete mitochondrial genome of the rodent intra-arterial nematodes Angiostrongylus cantonensis and Angiostrongylus costaricensis

“…However, findings from the present study along with results from several recent investigations (Kim et al 2006;Jex et al 2009;Kang et al 2009) pertaining to nematode mt genome analysis indicate that Ascaridida have a closer relationship with Rhabditida instead. Furthermore, gene arrangement patterns were more similar between Ascaridida and Rhabditida rather than Spirurida.…”

The complete mitochondrial genome ofAnisakis pegreffiiCampana-Rouget & Biocca, 1955, (Nematoda, Chromadorea, Rhabditida, Anisakidae) – clarification of mitogenome sequences of theAnisakis simplexspecies complex

“…The constructed phylogenetic tree showed the genome of A. pegreffii was closely related to that of A. simplex s.l. (accession number: AY994157, Kim et al 2006) (Figure 1), which was further identified to belong to A. pegreffii based on an additional analysis of COII gene sequences of Anisakis species. The three sibling species were distinctly separated from each other and also strongly supported by bootstrap values.…”