Distinctive mitochondrial genome of Calanoid copepod Calanus sinicus with multiple large non-coding regions and reshuffled gene order: Useful molecular markers for phylogenetic and population studies

Table 2 Genetic divergence of the mitochondrial genes among five copepods and 11 individuals of C. sinicus.

gene	DB	ωB	DW	ωW
*atp6*	0.557	0.0736	0.00102	0.157
*atp8*	0.519	NA¹	0.00314	0.000
*cox1*	0.238	0.0283	0.00115	0.000
*cox2*	0.488	0.0369	0.00098	0.885
*cox3*	0.372	0.0074	0.00211	0.000
*cytb*	0.395	0.0026	0.00070	0.000
*nad1*	0.528	0.0926	0.00115	0.159
*nad2*	0.753	0.0100	0.00255	0.222
*nad3*	0.581	0.0923	0.00103	0.358
*nad4*	0.668	0.0534	0.00184	0.914
*nad4L*	0.768	0.0617	0.000	0.000
*nad5*	0.625	0.0306	0.00173	0.279
*nad6*	0.732	0.0087	0.00333	0.435
*rrnS*	0.405	NA²	0.00078	NA²
*rrnL*	0.409	NA²	0.00163	NA²
tRNA	NA¹	NA²	0.00060	NA²
overall	0.525	0.0490	0.00150	0.203

Five copepods, the PCGs of which have been entirely determined, were selected for interspecific analysis. For the PCGs, divergence of amino acid was compared for the interspecific analyses, and the nucleotide divergence was outlined for the intraspecific comparisons. Ratios of non-synonymous to synonymous substitutions for the 13 PCGs were compared. Genes were labelled as outlined in the abbreviations section. DB and ωB: p-distance and dN/dS among five copepods; DW and ωW: p-distance and dN/dS within C. sinicus.
¹ missing data due to the incomplete dataset;
² unfeasible parameter for the corresponding genes.

ISSN: 1471-2164