Table 2.

Nucleotide composition of mitochondrial genomes of the seven Stenochironomus species.

	Species	Whole Genome	Protein Coding Genes	1st Codon Position	2nd Codon Position	3rd Codon Position	tRNA Genes	12S rRNA	16S rRNA	Control Region
A+T%	Stenochironomus gibbus	82.6	78.0	73.0	69.5	91.5	83.8	88.1	89.3	97.6
	Stenochironomus okialbus	82.2	77.4	73.3	69.8	89.1	84.4	87.0	89.0	96.2
	Stenochironomus tobaduodecimus	81.7	77.0	72.0	70.2	88.7	83.9	87.3	88.1	94.9
	Stenochironomus zhengi	81.8	77.8	73.0	69.8	90.7	85.1	86.1	87.2	90.6
	Stenochironomus sp. 1CZ	81.7	77.5	72.6	69.9	90.0	83.4	86.1	87.5	97.0
	Stenochironomus sp. 2CZ	82.7	79.4	74.7	70.6	93.0	84.3	88.2	89.0	98.2
	Stenochironomus sp. 3CZ	83.6	79.0	75.1	70.3	91.7	84.4	89.7	89.4	95.2
AT- Skew	Stenochironomus gibbus	0.01	−0.18	−0.05	−0.41	−0.11	0.05	−0.03	0.00	−0.08
	Stenochironomus okialbus	0.01	−0.19	−0.08	−0.42	−0.10	0.02	−0.09	0.01	−0.17
	Stenochironomus tobaduodecimus	−0.01	−0.18	−0.05	−0.41	−0.10	0.03	−0.06	−0.04	−0.09
	Stenochironomus zhengi	−0.02	−0.21	−0.08	−0.41	−0.15	0.02	−0.08	0.00	0.06
	Stenochironomus sp. 1CZ	0.01	−0.19	−0.07	−0.41	−0.10	0.03	−0.08	0.01	−0.02
	Stenochironomus sp. 2CZ	0.01	−0.18	−0.08	−0.41	−0.09	0.05	−0.06	0.01	−0.11
	Stenochironomus sp. 3CZ	0.02	−0.18	−0.08	−0.41	−0.09	0.06	−0.05	0.01	−0.09
GC- Skew	Stenochironomus gibbus	−0.24	0.00	0.18	−0.11	−0.18	−0.15	−0.33	−0.46	−0.33
	Stenochironomus okialbus	−0.22	−0.03	0.19	−0.14	−0.23	−0.13	−0.33	−0.42	0.32
	Stenochironomus tobaduodecimus	−0.34	−0.04	0.12	−0.13	−0.20	−0.16	−0.40	−0.43	−0.02
	Stenochironomus zhengi	−0.27	−0.04	0.13	−0.13	−0.23	−0.15	−0.25	−0.45	−0.55
	Stenochironomus sp. 1CZ	−0.29	−0.01	0.18	−0.14	−0.16	−0.16	−0.38	−0.46	−0.50
	Stenochironomus sp. 2CZ	−0.21	0.02	0.22	−0.13	−0.07	−0.12	−0.27	−0.45	0.00
	Stenochironomus sp. 3CZ	−0.24	−0.01	0.20	−0.13	−0.18	−0.14	−0.22	−0.36	0.00