Table 3.

Nucleotide composition of mitochondrial genomes in six species of Delphacidae

Species	A + T content (%)						AT skew						GC skew
	Ugyops	S. f	P. m	N. l	L. s	C. v	Ugyops	S. f	P. m	N. l	L. s	C. v	Ugyops	S. f	P. m	N. l	L. s	C. v
Whole genome	77.65	76.19	77.75	76.95	77.17	75.72	0.288	0.093	0.108	0.091	0.119	0.130	−0.270	−0.141	−0.244	−0.183	−0.184	−0.272
All PCGs	76.41	74.44	75.74	76.01	75.74	74.48	−0.102	−0.170	−0.151	−0.156	−0.144	−0.151	−0.064	−0.068	−0.081	−0.073	−0.092	−0.101
J-strand PCGs	74.83	72.27	73.98	74.14	73.52	72.55	0.189	−0.044	−0.012	−0.031	0.0002	0.006	−0.271	−0.170	−0.256	−0.231	−0.244	−0.299
N-strand PCGs	78.93	77.89	78.54	78.99	79.30	77.57	−0.541	−0.355	−0.359	−0.344	−0.359	−0.385	0.328	0.136	0.255	0.237	0.218	0.284
First codon	73.15	71.52	73.47	73.56	72.82	73.02	−0.008	−0.032	−0.052	−0.014	−0.022	−0.031	0.166	0.139	0.131	0.099	0.118	0.112
Second codon	68.36	68.94	69.59	69.87	69.50	69.56	−0.401	−0.407	−0.405	−0.399	−0.386	−0.398	−0.174	−0.150	−0.156	−0.121	−0.151	−0.140
Third codon	87.74	82.86	84.17	84.59	84.92	80.84	0.053	−0.092	−0.027	−0.079	−0.052	−0.047	−0.283	−0.262	−0.292	−0.273	−0.354	−0.339
rRNAs	78.50	76.46	78.45	77.83	77.83	76.74	−0.274	−0.082	−0.094	−0.076	−0.076	−0.105	0.302	0.267	0.308	0.298	0.318	0.335
Control region	88.86	82.50	86.15	79.29	83.20	80.12	0.055	0.004	−0.025	−0.007	0.028	−0.006	−0.096	0.105	−0.231	0.169	0.294	−0.130

Ugyops sp. (Ugyops), Sogatella furcifera (S. f), Peregrinus maidis (P. m), Nilaparvata lugens (N. l), Laodelphax striatellus (L. s), and Changeondelphax velitchkovskyi (C. v).