Genetic diversity of Northern snakehead (Channa argus) based on complete mitochondrial COI gene sequences

Figures & data

Table 1. Basic information of sampling sites and size (n) of Channa species.

No.	Species	Location name	GPS coordinate	Altitude (m)	Date (Size)
1	Biocolor type C. argus	Neijiang city, Sichuan Province, China	29°35'3.16"N 105°2'49.95"E	332	2015 (30)
23	White type C. argus	Neijiang city, Sichuan Province, China	29°34'14.64"N 105°4'1.95"E	332	2014 (19)
		Ziyang city, Sichuan Province, China	30°6'28.77"N 104°38'39.46"E	357	2014 (11)
4	C. maculata	San Jiaozhen, Zhongshan city, Guangdong Province, China	22°39'14.31"N 113°25'43.95"E	1	2015 (3)
5	C. maculata x C. argus	Guangzhou city, Guangdong Province, China	23°5'43.82"N 113°14'19.60"E	3	2015 (3)
6	C. asiatica	Guangzhou city, Guangdong Province, China	23°5'48.06"N 113°14'5.13"E	3	2015 (3)
7	C. micropeltes	Guangzhou city, Guangdong Province, China	23°5'28.31"N 113°14'1.34"E	3	2015 (2)
8	C. striata	Vientiane city, Laos	17°57'52.27"N 102°35'17.97"E	167	2014 (2)
9	C. lucius	Hanoi City, Vietnam	21°1'41.45"N 105°51'48.94"E	12	2014 (2)

Table 2. Haplotype information of COI gene among white and bio-colour type C. argus.

Haplotype		Populations (number of the haplotypes and its frequencies)				Common haplotype
		White type C. argus	Frequencies	Biocolor type C. argus	Frequencies
COI	WtcaHC1	27	0.9			WtcaHC1 and BtcaHC1
	WtcaHC2	2	0.067
	WtcaHC3	1	0.033
	BtcaHC1			26	0.87
	BtcaHC2			3	0.1
	BtcaHC3			1	0.033

Note: WtcaHC and BtcaHC represent the haplotypes of white and bio-colour type C. argus. The same as below.

Table 3. Pairwise distances calculated using Kimura 2-parameter model for COI gene.

	WtcaHC1	BtcaHC1	BtcaHC3	BtcaHC2	WtcaHC3	WtcaHC2	C. argus x C. maculata	C. maculata x C. argus	C. maculata	C. asiatica	C. marulius	C. striata	P. insignis	L. maculatus	E. coioides
WtcaHC1		0.000	0.001	0.001	0.001	0.001	0.002	0.008	0.008	0.011	0.012	0.013	0.014	0.015	0.013
BtcaHC1	0.000		0.001	0.001	0.001	0.001	0.002	0.008	0.008	0.011	0.012	0.013	0.014	0.015	0.013
BtcaHC3	0.001	0.001		0.001	0.001	0.001	0.002	0.008	0.008	0.011	0.012	0.013	0.014	0.015	0.013
BtcaHC2	0.001	0.001	0.001		0.001	0.001	0.002	0.008	0.008	0.011	0.012	0.013	0.014	0.015	0.013
WtcaHC3	0.001	0.001	0.001	0.002		0.001	0.002	0.008	0.008	0.011	0.013	0.013	0.014	0.015	0.013
WtcaHC2	0.001	0.001	0.001	0.001	0.001		0.002	0.008	0.008	0.011	0.012	0.013	0.014	0.015	0.013
C. argus x C. maculata	0.003	0.003	0.004	0.005	0.004	0.004		0.008	0.008	0.011	0.012	0.013	0.014	0.014	0.013
C. maculata x C. argus	0.081	0.081	0.082	0.082	0.082	0.082	0.080		0.000	0.011	0.011	0.011	0.014	0.015	0.013
C. maculata	0.081	0.081	0.082	0.082	0.082	0.082	0.080	0.000		0.011	0.011	0.011	0.014	0.015	0.013
C. asiatica	0.169	0.169	0.170	0.170	0.170	0.170	0.170	0.165	0.165		0.011	0.012	0.014	0.015	0.013
C. marulius	0.195	0.195	0.196	0.197	0.196	0.196	0.194	0.177	0.177	0.184		0.012	0.013	0.015	0.014
C. striata	0.203	0.203	0.204	0.205	0.203	0.204	0.202	0.187	0.187	0.170	0.183		0.014	0.015	0.014
P. insignis	0.243	0.243	0.244	0.245	0.244	0.244	0.240	0.226	0.226	0.232	0.212	0.219		0.015	0.014
L. maculatus	0.243	0.243	0.242	0.244	0.244	0.244	0.244	0.253	0.253	0.256	0.253	0.249	0.280		0.013
E. coioides	0.229	0.229	0.228	0.230	0.229	0.230	0.229	0.219	0.219	0.228	0.228	0.215	0.228	0.227

Note: Bottom left and top right corner are genetic distance and its standard error.

Figure 1. Molecular phylogenetic tree constructed by NJ method based on COI gene using Kimura 2-parameter model. (High bootstrap values (>80%) in 1000 resamplings are shown at the corresponding nodes).